CN110318711B - Liquid drainage method and device for a liquid-bearing low-yield oil and gas well - Google Patents
Liquid drainage method and device for a liquid-bearing low-yield oil and gas wellDownload PDFInfo
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- CN110318711B CN110318711BCN201910622444.1ACN201910622444ACN110318711BCN 110318711 BCN110318711 BCN 110318711BCN 201910622444 ACN201910622444 ACN 201910622444ACN 110318711 BCN110318711 BCN 110318711B
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- 238000000034methodMethods0.000titleclaimsabstractdescription23
- 239000007789gasSubstances0.000claimsabstractdescription641
- VNWKTOKETHGBQD-UHFFFAOYSA-NmethaneChemical compoundCVNWKTOKETHGBQD-UHFFFAOYSA-N0.000claimsabstractdescription366
- 238000000926separation methodMethods0.000claimsabstractdescription241
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- 238000003860storageMethods0.000claimsabstractdescription169
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- 238000004519manufacturing processMethods0.000claimsabstractdescription67
- 238000007599dischargingMethods0.000claimsabstractdescription19
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- 238000009434installationMethods0.000description9
- XLYOFNOQVPJJNP-UHFFFAOYSA-NwaterSubstancesOXLYOFNOQVPJJNP-UHFFFAOYSA-N0.000description9
- 239000003129oil wellSubstances0.000description8
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- 239000002343natural gas wellSubstances0.000description1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/34—Arrangements for separating materials produced by the well
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
Description
Translated fromChinese技术领城Technology area
本发明属于油气田天然气开采技术领域，特别涉及一种含液油气井排液的方法和装置，可用于天然气含液低产油气井排液，也可应用于天然气低压低产油气井增产，同时从市场应用方面可推广用于含天然气的油井回收天然气。The invention belongs to the technical field of natural gas exploitation in oil and gas fields, and in particular relates to a liquid drainage method and device for oil and gas wells containing liquid, which can be used for liquid drainage of natural gas liquid-containing low-yield oil and gas wells, and can also be used for increasing production of natural gas low-pressure low-yield oil and gas wells. At the same time, it can be applied from the market On the one hand, it can be popularized to recover natural gas from oil wells containing natural gas.
背景技术Background technique
在油气田天然气开采领域，目前主要方法是依靠井下压力自喷生产油气；如本技术领域所公知，油气井井下不可避免的存在凝析油和水，生产过程是气液两相流动形态。在油气井生产初期，油气井井筒内天然气的压力高、流速大，井筒内大量的凝析油和水被天然气携带到井上，在井口高压力作用下，天然气携带凝析油和水进入集输管道输送到集气站；到了油气井生产末期，地层压力下降使油气井井筒内天然气的压力低、流速小，油气井井筒中气体携带井下凝析油和水的能力逐渐减少，井筒内一部分凝析油和水被天然气携带到井上，被天然气携带到井上的凝析油和水在集输管道中产生的管道阻力，造成输送管道向集气站输送能力下降，进一步使油气井井筒内天然气流速减小，使另一部分凝析油和水在垂直井筒内沉积形成积液，积液在井筒内逐渐增加使油气井口压力持续降低成为低产井，当油气井口输送压力低于进入集气站集输管道压力时，油气井将无法正常生产，这种现象制约了油气井的持续发展。为了提高含液低产油气井的排液能力，国内外提出了多种发明和使用新型技术并结合长期关井升压、短期开井生产方法在含液低产天然气油气井上应用。In the field of natural gas exploitation in oil and gas fields, the current main method is to rely on downhole pressure self-spraying to produce oil and gas; as known in the technical field, there are inevitably condensate oil and water downhole in oil and gas wells, and the production process is a gas-liquid two-phase flow state. In the initial stage of oil and gas well production, the pressure and flow rate of natural gas in the wellbore of the oil and gas well are high, and a large amount of condensate oil and water in the wellbore are carried to the well by the natural gas. Under the action of high pressure at the wellhead, the natural gas carries condensate oil and water into the gathering and transportation The pipeline is transported to the gas-gathering station; at the end of oil and gas well production, the formation pressure drops so that the pressure and flow rate of natural gas in the wellbore of the oil and gas well are low, and the ability of the gas in the wellbore of the oil and gas well to carry downhole condensate oil and water gradually decreases, and part of the condensate in the wellbore The oil analysis and water are carried to the well by the natural gas, and the condensate oil and water carried to the well by the natural gas will cause pipeline resistance in the gathering and transportation pipeline, resulting in a decrease in the delivery capacity of the pipeline to the gas gathering station, further reducing the flow rate of natural gas in the wellbore of the oil and gas well. The other part of the condensate oil and water will be deposited in the vertical wellbore to form fluid accumulation, and the fluid accumulation will gradually increase in the wellbore to make the oil and gas wellhead pressure continue to decrease and become a low-production well. When the pipeline is under pressure, the oil and gas well will not be able to produce normally, which restricts the sustainable development of the oil and gas well. In order to improve the liquid drainage capacity of liquid-bearing low-yield oil and gas wells, a variety of inventions and new technologies have been proposed at home and abroad, combined with long-term well shut-in and pressure boosting, and short-term well-opening production methods for application in liquid-bearing low-yield natural gas oil and gas wells.
现有专利中，《一种井下节流器》（申请号201610511843.7）是利用向井下投放这种节流器的方法，防止井筒内形成水合物堵塞，达到提高油气井的自产气量的目的；《一种凝胶泡沫与原位微乳组合应用油井增产的方法》（申请号201810378287.X）是向油井内注入泡沫的方法，把井下的积液乳化后使其密度降低、比重减小，依靠井下的气压把积液推出，提高油井自产气量并能减少油井的产水量；《低压油气井闭式气举排液组合管柱》（申请号201320671613.9）是通过向井下投入装备，利用单流阀单向流动的特点，使井下长距离积液成为小段阻塞避免积液，依靠井下的气压把积液推出的方法保证油气井的自产气量；《智能式气井排采增产装置》（申请号201510476076.6）是在天然气井的排采水系统中，将混合在排采水中的天然气分离出来，输入到采气管道中，防止天然气进入到大气层，提高油井的采油量。Among the existing patents, "A Downhole Choke" (Application No. 201610511843.7) uses the method of putting this kind of throttle downhole to prevent hydrate blockage in the wellbore and achieve the purpose of increasing the self-produced gas of oil and gas wells; "A Method for Oil Well Stimulation by Combining Gel Foam and In-Situ Microemulsion" (Application No. 201810378287.X) is a method of injecting foam into oil wells to emulsify the downhole fluid to reduce its density and specific gravity. Relying on the downhole air pressure to push out the accumulated liquid, increasing the self-produced gas of the oil well and reducing the water production of the oil well; The one-way flow of the flow valve makes the long-distance fluid accumulation downhole become a small blockage to avoid fluid accumulation, and the method of pushing out the fluid accumulation by relying on the downhole air pressure ensures the self-production of oil and gas wells; "Intelligent Gas Well Drainage Stimulation Device" (application No. 201510476076.6) is used in the drainage and production water system of natural gas wells to separate the natural gas mixed in the drainage water and input it into the gas production pipeline to prevent natural gas from entering the atmosphere and increase the oil recovery of oil wells.
在提出含液低产天然气油气井排液方法的同时，《油井打捞装置》（申请号201721239906.4）提出了打捞井下投放物体的方法，用于在维护井下投放物时，防止投放物在被打捞上提过程中脱离构体而掉落井底，以提高打捞井下投放物的工作效率。While proposing the liquid drainage method for oil and gas wells containing liquid and low-yield natural gas, "Oil Well Salvage Device" (application number 201721239906.4) proposed a method for salvaging objects thrown in the well, which is used to prevent the objects from being lifted up when the objects are salvaged. During the process, it breaks away from the structure and falls to the bottom of the well, so as to improve the work efficiency of salvaging the underground objects.
由此可见，通过往含液低产油气井井筒内投放物体或介质来排出油气井井筒内积液的技术，由于投放设备成本高、投放介质污染高、投放工艺复杂、维护不变等原因，不利于推广应用。It can be seen that the technology of discharging liquid accumulation in the wellbore of oil and gas wells by putting objects or media into the wellbore of liquid-bearing low-yield oil and gas wells is not feasible due to the high cost of putting equipment, high pollution of the putting medium, complicated putting process, and unchanged maintenance. Conducive to promotion and application.
发明内容Contents of the invention
为了解决以上问题，本发明的目的是提出一种含液低产油气井排液的方法和装置，使其能保证油气井井筒内天然气携带井下积液能力，把携带到油气井井上的积液进行分离排送到集气站集输管道，完成含液低产油气井排液和低产油气井增产，安全可靠、环保、节能、容易实施、维护方便、利于推广。In order to solve the above problems, the object of the present invention is to propose a liquid drainage method and device for low-yield oil and gas wells, so that it can ensure the ability of the natural gas in the wellbore of the oil and gas well to carry the liquid accumulation downhole, and carry out the liquid accumulation on the oil and gas well. Separation and discharge to the gathering pipeline of the gas gathering station to complete the drainage of liquid-containing low-yield oil and gas wells and the production increase of low-yield oil and gas wells. It is safe, reliable, environmentally friendly, energy-saving, easy to implement, convenient to maintain, and conducive to popularization.
本发明通过以下技术方案完成其发明任务：The present invention completes its inventive task through the following technical solutions:
一种含液低产油气井的排液装置，排液装置设置在井口采气树与集气站集输管道之间的连接管路上；所述的排液装置具有气液分离罐；所述的气液分离罐内设置有液体，并由所述液体的液面将气液分离罐的内腔分隔为气油腔和液体腔；气液分离罐所述气油腔的油气进口连通有采气总管；所述的采气总管与所述的井口采气树相连通；气液分离罐所述液体腔的出液口Ⅰ连通气液隔离罐的所述储液腔，并在所述的出液口Ⅰ与所述的储液腔之间设置气动控制截止阀和单向阀Ⅰ；气液分离罐对应所述的气油腔还设置有油气旁通口；所述的油气旁通口连通输送总管；气液分离罐所述气油腔的油气出口连接气液隔离罐的油气腔；A liquid drainage device for an oil and gas well containing liquid and low yield, the liquid drainage device is arranged on the connection pipeline between the wellhead gas tree and the gas gathering station gathering pipeline; the liquid drainage device has a gas-liquid separation tank; the There is a liquid in the gas-liquid separation tank, and the inner cavity of the gas-liquid separation tank is divided into a gas-oil chamber and a liquid chamber by the liquid surface; the oil-gas inlet of the gas-oil chamber of the gas-liquid separation tank is connected with a gas extraction main pipe; the gas production main pipe is connected with the wellhead gas production tree; the liquid outlet I of the liquid chamber of the gas-liquid separation tank is connected with the liquid storage chamber of the gas-liquid isolation tank, and at the outlet A pneumatically controlled stop valve and a one-way valve I are set between the liquid port I and the liquid storage chamber; the gas-liquid separation tank is also provided with an oil-gas bypass port corresponding to the gas-oil chamber; the oil-gas bypass port communicates with Conveying main pipe; the oil and gas outlet of the gas-oil chamber of the gas-liquid separation tank is connected to the oil-gas chamber of the gas-liquid separation tank;
所述的气液隔离罐内部从上到下依次分为纯气腔、油气腔和储液腔；纯气腔与油气腔之间采用捕雾器隔离，油气腔与储液腔是相互密封隔离的两个腔体；The interior of the gas-liquid isolation tank is divided into a pure gas chamber, an oil-gas chamber and a liquid storage chamber from top to bottom; two cavities;
所述的纯气腔圆周上设有出气口Ⅰ和排空口Ⅱ；所述的出气口Ⅰ连通抽压装置的抽气口，抽压装置的出气口Ⅱ通过高压气管连接到冷却器的进气口Ⅱ，冷却器的出气口Ⅲ连接到输送总管；所述的油气腔圆周上设有进气口Ⅰ、低压气口和安装口Ⅰ，所述的进气口Ⅰ连通到气液分离罐的油气出口；所述的低压气口连接在气动控制三通阀的出口B上；所述的储液腔圆周上具有进液口、高压气口、出液口Ⅱ和安装口Ⅱ；进液口通过管路和单向阀、气动控制截止阀连接到气液分离罐的出液口Ⅰ，高压气口连接到气动控制三通阀的进气口A，所述的出液口Ⅱ连通输送总管；所述油气腔的安装口Ⅰ与储液腔的安装口Ⅱ之间相互连通；The circumference of the pure air cavity is provided with an air outlet I and an exhaust port II; the air outlet I is connected to the air extraction port of the pumping device, and the air outlet II of the pumping device is connected to the air inlet of the cooler through a high-pressure air pipe. Port II, the air outlet III of the cooler is connected to the conveying main pipe; the circumference of the oil and gas chamber is provided with an air inlet I, a low-pressure air port and an installation port I, and the air inlet I is connected to the oil and gas of the gas-liquid separation tank Outlet; the low-pressure gas port is connected to the outlet B of the pneumatically controlled three-way valve; the liquid storage cavity has a liquid inlet, a high-pressure gas port, a liquid outlet II and an installation port II on the circumference; the liquid inlet passes through the pipeline The one-way valve and the pneumatic control shut-off valve are connected to the liquid outlet I of the gas-liquid separation tank, the high-pressure gas port is connected to the air inlet A of the pneumatic control three-way valve, and the liquid outlet II is connected to the delivery main pipe; the oil and gas The installation port Ⅰ of the chamber and the installation port Ⅱ of the liquid storage chamber are connected to each other;
排液装置还设置有高压气罐；所述的高压气罐在圆周上设有进气口Ⅲ、控制气口、出气口Ⅳ和充放口；所述的进气口Ⅲ连接到冷却器的出气口Ⅲ，控制气口通过控制气管分为三条管路：管路Ⅰ连接到安装在气液隔离罐所述储液腔上的液位控制阀Ⅰ，通过液位控制阀Ⅰ再连接到气动控制三通阀的气动控制口K，管路Ⅱ连接到气动控制三通阀的换向口C，管路Ⅲ连接到安装在气液分离罐上的液位控制阀Ⅱ上，通过液位控制阀Ⅱ再连接到气动控制截止阀的气动控制口S；出气口Ⅳ连接到天然气发动机上的燃气截断阀；充放口连接输气管路；气动控制三通阀的进口A连通气液隔离罐的高压气口；所述的液位控制阀Ⅰ在气液隔离罐所述储液腔内液体的液位高时导通，来自于高压气罐控制气口的高压气体，通过控制气管的管路Ⅰ、液位控制阀Ⅰ作用于气动控制三通阀气动控制口K，使气动控制三通阀的进口A和换向口C导通，液位控制阀在气液隔离罐储液腔的液体液位低时截止，气动控制三通阀气动控制口K失去高压作用气使进口A和出口B导通；液位控制阀Ⅱ在气液分离罐内的液体液位低时截止；气液分离罐内的液体在液位控制阀Ⅱ的控制和罐内天然气压力作用下，分批向储液腔的排送和储液腔内液体分成多次排送到输送总管；The liquid discharge device is also provided with a high-pressure gas tank; the high-pressure gas tank is provided with an air inlet III, a control air port, an air outlet IV and a charging and discharging port on the circumference; the air inlet III is connected to the outlet of the cooler. Air port III and control air port are divided into three pipelines through the control air pipe: pipeline I is connected to the liquid level control valve I installed on the liquid storage chamber of the gas-liquid isolation tank, and then connected to the pneumatic control three through the liquid level control valve I The pneumatic control port K of the one-way valve, the pipeline II is connected to the reversing port C of the pneumatic control three-way valve, the pipeline III is connected to the liquid level control valve II installed on the gas-liquid separation tank, through the liquid level control valve II Then connect to the pneumatic control port S of the pneumatic control shut-off valve; the gas outlet IV is connected to the gas shut-off valve on the natural gas engine; the charging and discharging port is connected to the gas pipeline; the inlet A of the pneumatic control three-way valve is connected to the high-pressure gas port of the gas-liquid isolation tank ; The liquid level control valve I is turned on when the liquid level of the liquid in the liquid storage chamber of the gas-liquid isolation tank is high, and the high-pressure gas from the control gas port of the high-pressure gas tank passes through the pipeline I of the control gas pipe, the liquid level The control valve Ⅰ acts on the pneumatic control port K of the pneumatic control three-way valve to make the inlet A of the pneumatic control three-way valve and the reversing port C conduct. Cut off, the pneumatic control three-way valve pneumatic control port K loses the high-pressure gas to make the inlet A and outlet B conduct; the liquid level control valve II cuts off when the liquid level in the gas-liquid separation tank is low; the liquid in the gas-liquid separation tank Under the control of the liquid level control valve II and the natural gas pressure in the tank, the discharge to the liquid storage chamber in batches and the liquid in the liquid storage chamber are divided into multiple discharges to the delivery main pipe;
气动控制截止阀上有进口A、出口B和气动控制口S；所述的进口A通过管路连接到气液分离罐的出液口, 出口B通过单向阀与气液隔离罐的进液口相连通； 气动控制口S排液装置控制气口的管路Ⅲ相连通；气动控制截止阀的气动控制口S失去高压作用气使进口A和出口B截止。There are inlet A, outlet B and pneumatic control port S on the pneumatic control stop valve; the inlet A is connected to the liquid outlet of the gas-liquid separation tank through a pipeline, and the outlet B is connected to the liquid inlet of the gas-liquid separation tank through a one-way valve. The ports of the pneumatic control port S are connected to the pipeline III of the control port of the liquid discharge device; the pneumatic control port S of the pneumatic control shut-off valve loses the high-pressure gas, so that the inlet A and outlet B are closed.
所述的油气旁通口通过单向阀Ⅱ、手动截止阀Ⅰ和输气管路连接到输送总管。The oil and gas bypass port is connected to the delivery main pipe through the one-way valve II, the manual stop valve I and the gas pipeline.
所述的气液分离罐的顶部设置有排空口Ⅰ，底部设置有排污口。The top of the gas-liquid separation tank is provided with an emptying port I, and the bottom is provided with a sewage outlet.
冷却器出气口与输送总管之间设置有单向阀Ⅲ，用于保证输送总管内的气体或液体不能倒流进入冷却器出气口。A one-way valve III is arranged between the air outlet of the cooler and the delivery main pipe to ensure that the gas or liquid in the delivery main pipe cannot flow back into the cooler air outlet.
气液隔离罐所述储液腔出液口后安装有单向阀Ⅴ，用于保证输送总管内的天然气和液体不能倒流进入气液隔离罐储液腔。A one-way valve V is installed behind the liquid outlet of the liquid storage chamber of the gas-liquid isolation tank to ensure that the natural gas and liquid in the delivery main pipe cannot flow back into the liquid storage chamber of the gas-liquid isolation tank.
一种含液低产油气井的排液方法，所述的采气总管与井口采气树连接、输送总管与集气站集输管道连接后，所述的排液装置从含液油气井井口采气树到集气站集输管道的排送过程，对含液油气井井筒内积液在井上进行油气分离排送控制，对低产油气井进行抽压增产输送控制，完成含液低产油气井排液和低产油气井增产；具体方法如下：A liquid drainage method for liquid-containing low-yield oil and gas wells. After the gas production main pipe is connected to the wellhead gas tree, and the transportation main pipe is connected to the gas gathering station gathering and transportation pipeline, the liquid drainage device is used to extract liquid from the wellhead of the liquid-containing oil and gas well. The discharge process from the gas tree to the gathering pipeline of the gas gathering station is to control the oil and gas separation and discharge on the wellbore of liquid-bearing oil and gas wells, to control the pumping and increase production of low-yield oil-gas wells, and to complete the drainage of liquid-bearing and low-yield oil and gas wells. Stimulation of liquid and low-yield oil and gas wells; specific methods are as follows:
所述的气液分离罐用于收集和分离由油气井井筒内天然气携带到井上的多积液，分离后的天然气通过气液分离罐输送到输送总管，携带到油气井井上的多积液通过气液分离罐分批排送到气液隔离罐，经气液隔离罐分成多次排送到输送总管，随进入输送总管内的天然气携带排送到集气站集输管道；采气总管与井口采气树连接后，气液分离罐油气入口通过采气总管、井口采气树与含液油气井井筒连通；当油气井口采气树输送压力高于集气站集输管道压力时，打开手动截止阀Ⅰ，含液油气井井筒内积液和天然气形成的气液混合物通过采气树、采气总管和气液分离罐的油气入口进入罐内；经气液分离罐分离出的液体储存在罐底，经气液分离罐分离出的油气井高压天然气通过气液分离罐、输气管路进入单向阀Ⅲ后的输送总管输送到集气站集输管道，完成含液油气井井口采气树输送压力高于集气站集输管道压力时输送天然气生产工作；在油气井高压天然气从气液分离罐的油气旁通口输送到输送总管过程，打开手动截止阀Ⅱ，高压天然气通过气液分离罐油气旁通口、单向阀Ⅱ、手动截止阀Ⅰ、输气管路、手动截止阀Ⅱ从高压气罐充放口进入高压气罐，从高压气罐控制气口通过控制气管分为三条管路向外输送高压气体：通过管路Ⅰ输送到安装在气液隔离罐储液腔上的液位控制阀Ⅰ，通过管路Ⅱ输送到气动控制三通阀的换向口C，通过管路Ⅲ输送到安装在气液分离罐上的液位控制阀Ⅱ；当气液分离罐储存在罐底液体液位高时，安装在气液分离罐上的液位控制阀Ⅱ导通，来自于高压气罐控制气口的高压气体，通过控制气管管路Ⅲ、液位控制阀Ⅱ作用于气动控制截止阀的气动控制口S，使气动控制截止阀进口A和出口B导通，气液分离罐液体在罐内天然气压力作用下，通过气液分离罐出液口、气动控制截止阀进口A和出口B、单向阀Ⅰ从气液隔离罐进液口排送到气液隔离罐储液腔；当气液隔离罐储液腔液体液位高时，安装在气液隔离罐储液腔上的液位控制阀Ⅰ导通，来自于高压气罐控制气口的高压气体，通过控制气管管路Ⅰ、液位控制阀Ⅰ作用于气动控制三通阀气动控制口K，使气动控制三通进口A和换向口C导通，来自于高压气罐控制气口的高压气体，通过控制气管管路Ⅱ、气动控制三通阀换向口C和进口A进入气液隔离罐储液腔，气液隔离罐的储液腔液体在控制气管管路Ⅱ内高压气体压力作用下，从气液隔离罐储液腔出液口通过管路和单向阀Ⅴ25排送到单向阀Ⅲ后的输送总管；安装在油气腔的接口与储液腔的接口之间的单向阀Ⅳ，用于保证气液隔离罐储液腔内的高压气体不能倒流进入气液隔离罐油气腔；单向阀Ⅰ用于保证气动控制截止阀进口A和出口B导通期间，气液隔离罐的储液腔液体向输送总管排送时不能倒流进入气液分离罐；当气液分离罐储存在罐底液体液位低时，安装在气液分离罐上的液位控制阀Ⅱ截止，来自于高压气罐控制气口控制气管的管路Ⅲ内气体不能通过液位控制阀Ⅱ进入气动控制截止阀的气动控制口S，使气动控制截止阀进口A和出口B截止，气液分离罐的出液口与气液隔离罐储液腔的进液口不再连通，保证了气液分离罐内的天然气不能进入到气液隔离罐储液腔；当气液隔离罐的储液腔内的液体排送到输送总管后，气液隔离罐的储液腔内的液体液位降低，使安装在气液隔离罐储液腔上的液位控制阀Ⅰ截止，来自于高压气罐控制气口的控制气管的管路Ⅰ内气体不能通过液位控制阀Ⅰ进入气动控制三通阀气动控制口K，使气动控制三通阀进口A和换向口C截止，换向为气动控制三通阀的进口A和出口B导通，控制气管的管路Ⅱ内高压气体不再通过气动控制三通阀进口A和换向口C进入气液隔离罐的储液腔，气液隔离罐的储液腔内保存的高压气体通过高压气口、气动控制三通阀进口A和出口B泄放到气液隔离罐的油气腔低压气口，使气液隔离罐储液腔内的压力降低，当储液腔的压力低于气液分离罐内压力后，气液分离罐的液体在液位控制阀Ⅱ控制和罐内天然气压力作用下，再次排送到气液隔离罐的储液腔，直到气液分离罐的液体和气液隔离罐的储液腔内的液体液位都不高后暂停排液工作，完成气液分离罐的液体分批向气液隔离罐的储液腔的排送和气液隔离罐的储液腔的液体分成多次排送到输送总管；进入输送总管的液体，在来自于气液分离罐油气旁通口进入输送总管的天然气携带下排送到集气站集输管道，降低了集气站集输管道内输送压力，保证油气井井筒内天然气携带井下积液能力，达到了含液油气井井筒内积液在井上进行油气分离排送控制目的；手动打开气液分离罐的排污口连接的手动截止阀，利用罐内天然气压力作用把气液分离罐的液体排送到运液车，以便于液体的人工收集；气液分离罐的排空口连接有高压排空阀，用于保护气液分离罐的安全；气液隔离罐的纯气腔的排空口连接有低压排空阀，用于保护气液隔离罐的安全；天然气发动机与高压气罐之间安装减压稳压阀，用于保证天然气发动机运行所需燃料的稳定；The gas-liquid separation tank is used to collect and separate the excess liquid carried by the natural gas in the wellbore of the oil and gas well to the well. The gas-liquid separation tank is discharged to the gas-liquid isolation tank in batches, and the gas-liquid isolation tank is divided into multiple discharges to the transmission main pipe, and the natural gas entering the transmission main pipe is carried and discharged to the gathering and transportation pipeline of the gas gathering station; the gas production main pipe and the After the wellhead Xmas tree is connected, the oil and gas inlet of the gas-liquid separation tank is connected to the wellbore of the liquid-containing oil and gas well through the gas production main pipe and the wellhead Xmas tree; Manual shut-off valve Ⅰ, the gas-liquid mixture formed by liquid and natural gas in the wellbore of liquid-containing oil and gas wells enters the tank through the gas tree, the gas production main and the oil and gas inlet of the gas-liquid separation tank; the liquid separated by the gas-liquid separation tank is stored in the At the bottom of the tank, the high-pressure natural gas from the oil and gas wells separated by the gas-liquid separation tank passes through the gas-liquid separation tank and the gas pipeline into the delivery main pipe after the check valve III, and is transported to the gas gathering pipeline of the gas gathering station to complete the wellhead gas production of the oil and gas wells containing liquid When the transmission pressure of the tree is higher than the pressure of the gas-gathering pipeline of the gas-gathering station, the natural gas production work is carried out; when the high-pressure natural gas of the oil and gas well is transported from the oil-gas bypass port of the gas-liquid separation tank to the main pipeline, the manual shut-off valve II is opened, and the high-pressure natural gas passes through the gas-liquid The oil and gas bypass port of the separation tank, one-way valve II, manual shut-off valve I, gas pipeline, and manual shut-off valve II enter the high-pressure gas tank from the filling and discharging port of the high-pressure gas tank, and are divided into three pipes from the control gas port of the high-pressure gas tank through the control gas pipe. The high-pressure gas is transported outward: through the pipeline Ⅰ to the liquid level control valve Ⅰ installed on the liquid storage chamber of the gas-liquid isolation tank, through the pipeline Ⅱ to the reversing port C of the pneumatic control three-way valve, through the pipeline Ⅲ It is sent to the liquid level control valve II installed on the gas-liquid separation tank; when the liquid level stored at the bottom of the gas-liquid separation tank is high, the liquid level control valve II installed on the gas-liquid separation tank conducts, which comes from high pressure The high-pressure gas at the control gas port of the gas tank acts on the pneumatic control port S of the pneumatic control shut-off valve through the control gas pipe line III and liquid level control valve II, so that the inlet A and outlet B of the pneumatic control shut-off valve are connected, and the liquid in the gas-liquid separation tank Under the action of natural gas pressure in the tank, it is discharged from the liquid inlet of the gas-liquid isolation tank to the liquid storage cavity of the gas-liquid isolation tank through the liquid outlet of the gas-liquid separation tank, the inlet A and outlet B of the pneumatic control stop valve, and the one-way valve I; When the liquid level in the liquid storage chamber of the gas-liquid isolation tank is high, the liquid level control valve Ⅰ installed on the liquid storage chamber of the gas-liquid isolation tank is turned on, and the high-pressure gas from the control gas port of the high-pressure gas tank passes through the control gas pipe line Ⅰ , The liquid level control valve Ⅰ acts on the pneumatic control port K of the pneumatic control three-way valve, so that the pneumatic control three-way inlet A and the reversing port C conduct, and the high-pressure gas from the control port of the high-pressure gas tank passes through the control gas pipe line II , Pneumatically controlled three-way valve reversing port C and inlet A enter the liquid storage cavity of the gas-liquid isolation tank, and the liquid in the liquid storage cavity of the gas-liquid isolation tank is stored from the gas-liquid isolation tank under the action of high-pressure gas pressure in the control gas pipeline pipeline II The liquid outlet of the liquid chamber is discharged to the delivery main pipe after the one-way valve III through the pipeline and the one-way valve V25; the one-way valve IV installed between the interface of the oil-gas chamber and the interface of the liquid storage chamber is used to ensure that the gas-liquid The high-pressure gas in the liquid storage cavity of the isolation tank cannot flow back into the oil-gas cavity of the gas-liquid isolation tank; the one-way valve I is used to ensure that the liquid in the liquid storage cavity of the gas-liquid isolation tank is transported to When the main pipe is discharged, it cannot flow back into the gas-liquid separation tank; when the liquid level stored in the bottom of the gas-liquid separation tank is low, the liquid level control valve II installed on the gas-liquid separation tank will be cut off, and it will come from the high-pressure gas tank to control the gas port. The gas in the pipeline III of the air pipe cannot enter the pneumatic control port S of the pneumatic control stop valve through the liquid level control valve II, so that the inlet A and outlet B of the pneumatic control stop valve are cut off, and the liquid outlet of the gas-liquid separation tank is separated from the gas-liquid isolation tank. The liquid inlet of the liquid storage chamber is no longer connected to ensure that the natural gas in the gas-liquid separation tank cannot enter the liquid storage chamber of the gas-liquid isolation tank; when the liquid in the liquid storage chamber of the gas-liquid isolation tank is discharged to the delivery main pipe, The liquid level in the liquid storage chamber of the gas-liquid isolation tank decreases, so that the liquid level control valve I installed on the liquid storage chamber of the gas-liquid isolation tank is cut off, and the gas in the pipeline I of the control air pipe from the control gas port of the high-pressure gas tank It cannot enter the pneumatic control port K of the pneumatic control three-way valve through the liquid level control valve I, so that the inlet A of the pneumatic control three-way valve and the reversing port C are cut off, and the reversing is the conduction of the inlet A and outlet B of the pneumatic control three-way valve. The high-pressure gas in the pipeline II of the control air pipe no longer enters the liquid storage cavity of the gas-liquid isolation tank through the inlet A and reversing port C of the pneumatic control three-way valve, and the high-pressure gas stored in the liquid storage cavity of the gas-liquid isolation tank passes through the high-pressure gas port , The inlet A and outlet B of the pneumatic control three-way valve are released to the low-pressure gas port of the oil-gas chamber of the gas-liquid isolation tank, so that the pressure in the liquid storage chamber of the gas-liquid isolation tank is reduced. When the pressure in the liquid storage chamber is lower than that in the gas-liquid separation tank After pressure, the liquid in the gas-liquid separation tank is discharged to the liquid storage chamber of the gas-liquid separation tank again under the control of the liquid level control valve II and the natural gas pressure in the tank, until the liquid in the gas-liquid separation tank and the storage space of the gas-liquid separation tank After the liquid level in the liquid chamber is not high, the liquid discharge work is suspended, and the liquid in the gas-liquid separation tank is discharged in batches to the liquid storage chamber of the gas-liquid isolation tank and the liquid in the liquid storage chamber of the gas-liquid isolation tank is divided into multiple times. Discharged to the conveying main pipe; the liquid entering the conveying main pipe is carried by the natural gas from the oil-gas bypass port of the gas-liquid separation tank into the conveying main pipe and discharged to the gathering pipeline of the gas gathering station, which reduces the transportation in the gathering pipeline of the gas gathering station pressure, to ensure the ability of natural gas in the wellbore of oil and gas wells to carry downhole liquid accumulation, and to achieve the purpose of oil and gas separation and discharge control on the wellbore of liquid oil and gas wells; manually open the manual stop valve connected to the sewage outlet of the gas-liquid separation tank, and use The natural gas pressure in the tank discharges the liquid in the gas-liquid separation tank to the liquid transport vehicle for manual collection of the liquid; the emptying port of the gas-liquid separation tank is connected with a high-pressure drain valve to protect the safety of the gas-liquid separation tank ;The emptying port of the pure gas chamber of the gas-liquid isolation tank is connected with a low-pressure venting valve to protect the safety of the gas-liquid isolation tank; a pressure reducing and stabilizing valve is installed between the natural gas engine and the high-pressure gas tank to ensure that the natural gas engine Stabilization of fuel required for operation;
当油气井口采气树输送压力低于集气站集输管道压力时，油气井口采气树天然气不能通过气液分离罐进入输送总管输送到集气站集输管道，安装在气液分离罐的出液口后的单向阀Ⅱ，用于保证输送总管内的天然气和液体不能倒流进入液分离罐；为了实现对低产油气井进行抽压增产输送控制，此时打开手动截止阀Ⅱ，输送总管内的天然气通过输气管路、手动截止阀Ⅱ从高压气罐充放口向高压气罐充气，进入高压气罐内的天然气用于为天然气发动机提供起动燃料；高压气罐充满后关闭手动截止阀Ⅱ，起动天然气发动机运行使抽压装置工作，在抽压装置的连续抽压作用下，气液隔离罐的纯气腔的纯净天然气通过出气口、低压气管进入抽压装置的抽气口，并从出气口排出，使气液隔离罐的纯气腔内天然气随即减少，油气腔的天然气立即向纯气腔补充，使油气腔内天然气跟随减少，气液分离罐内的天然气经油气出口、减压阀、气液隔离罐进气口向油气腔补充后，气液分离罐内天然气跟随减少，含液油气井井筒内积液和天然气形成的气液混合物被携带到油气井上，通过采气树、采气总管和气液分离罐油气入口向气液分离罐补充，进入气液分离罐分离出液体和低压天然气，低压天然气从油气出口通过管路和减压阀降低压力后，从气液隔离罐油气腔进气口进入气液隔离罐油气腔，经过纯气腔与油气腔之间捕雾器把含油雾的天然气分离成液体和低压天然气；液体通过单向阀Ⅳ进入气液隔离罐的储液腔=储存，携带在天然气中的雾状液体被捕雾材料分离出来落入油气腔的底部，纯净的低压天然气进入气液隔离罐的纯气腔，并通过出气口、低压气管进入抽压装置的抽气口，保证了抽压装置的安全工作，在抽压装置抽压作用下，从抽压装置的出气口输出压力高于集气站集输管道压力的高温高压天然气，通过高压气管进入冷却器的进气口，通过冷却器冷却成高压低温天然气后，从冷却器的出气口进入输送总管后输送到集气站集输管道；经冷却器冷却后的少量高压低温天然气，通过稳压阀稳压后经高压气罐的进气口不断进入高压气罐，经高压气罐的出气口通过管路和减压稳压阀后成为天然气发动机连续运行所需的燃料，使天然气发动机不受油气井口采气树井口压力变化影响，保证了抽压装置的连续抽压天然气增产工作；进入高压气罐的天然气还从高压气罐的控制气口通过控制气管分为三条管路向外输送高压气体：通过管路Ⅰ输送到液位控制阀Ⅰ，通过管路Ⅱ输送到气动控制三通阀换向口C，通过管路Ⅲ输送到液位控制阀Ⅱ；当气液分离罐储存在罐底液体液位高时，液位控制阀Ⅱ导通，来自于高压气罐控制气口的高压气体，通过管路Ⅲ、液位控制阀Ⅱ作用于气动控制截止阀气动控制口S，使气动控制截止阀进口A和出口B导通，气液分离罐的液体在罐内天然气压力作用下，通过气液分离罐的出液口、气动控制截止阀进口A和出口B、单向阀Ⅰ从气液隔离罐的进液口排送到气液隔离罐的储液腔，当气液隔离罐的储液腔内的液体液位高时，安装在气液隔离罐储液腔上的液位控制阀Ⅰ导通，来自于高压气罐控制气口的高压气体，通过管路Ⅰ、液位控制阀Ⅰ作用于气动控制三通阀的气动控制口K，使气动控制三通阀的进口A和换向口C导通，来自于高压气罐的控制气口的高压气体，通过管路Ⅱ、气动控制三通阀的换向口C和进口A进入储液腔，储液腔内的液体在管路Ⅱ内高压气体压力作用下，从储液腔的出液口排送到输送总管；When the transmission pressure of the oil and gas wellhead Xmas tree is lower than the pressure of the gathering pipeline of the gas gathering station, the natural gas of the oil and gas wellhead Xmas tree cannot enter the delivery main pipe through the gas-liquid separation tank and be transported to the gathering pipeline of the gas gathering station. It is installed in the gas-liquid separation tank The one-way valve II behind the liquid outlet is used to ensure that the natural gas and liquid in the delivery main pipe cannot flow back into the liquid separation tank; The natural gas in the pipeline fills the high-pressure gas tank from the filling and discharging port of the high-pressure gas tank through the gas transmission pipeline and the manual shut-off valve II, and the natural gas entering the high-pressure gas tank is used to provide starting fuel for the natural gas engine; close the manual shut-off valve after the high-pressure gas tank is full Ⅱ. Start the natural gas engine and make the pumping device work. Under the continuous pumping action of the pumping device, the pure natural gas in the pure gas chamber of the gas-liquid isolation tank enters the pumping port of the pumping device through the gas outlet and the low-pressure air pipe, and flows from the The natural gas in the pure gas chamber of the gas-liquid separation tank is discharged immediately, and the natural gas in the oil-gas chamber is immediately replenished to the pure gas chamber, so that the natural gas in the oil-gas chamber decreases accordingly, and the natural gas in the gas-liquid separation tank is decompressed through the oil-gas outlet. After the valve and the air inlet of the gas-liquid isolation tank are replenished to the oil-gas cavity, the natural gas in the gas-liquid separation tank will decrease accordingly, and the gas-liquid mixture formed by liquid accumulation and natural gas in the wellbore of the liquid-containing oil-gas well will be carried to the oil-gas well, and passed through the gas tree, The oil and gas inlet of the gas production main pipe and the gas-liquid separation tank replenishes the gas-liquid separation tank, and enters the gas-liquid separation tank to separate liquid and low-pressure natural gas. The air inlet of the cavity enters the oil-gas chamber of the gas-liquid isolation tank, and the mist-containing natural gas is separated into liquid and low-pressure natural gas through the mist catcher between the pure gas chamber and the oil-gas chamber; the liquid enters the liquid storage of the gas-liquid isolation tank through the check valve IV Cavity = storage, the mist liquid carried in the natural gas is separated by the mist-catching material and falls into the bottom of the oil-gas chamber, the pure low-pressure natural gas enters the pure gas chamber of the gas-liquid isolation tank, and enters the pumping device through the gas outlet and the low-pressure gas pipe The pumping port ensures the safe operation of the pumping device. Under the pumping action of the pumping device, the high-temperature and high-pressure natural gas whose pressure is higher than the pressure of the gas-gathering pipeline at the gas-gathering station is output from the gas outlet of the pumping device, and enters the cooling system through the high-pressure gas pipe. After being cooled by the cooler into high-pressure and low-temperature natural gas, it enters the transmission main pipe from the outlet of the cooler and is transported to the gathering and transportation pipeline of the gas gathering station; a small amount of high-pressure and low-temperature natural gas cooled by the cooler passes through the pressure stabilizing valve After the pressure is stabilized, it continuously enters the high-pressure gas tank through the air inlet of the high-pressure gas tank, passes through the pipeline and the pressure-reducing and stabilizing valve through the gas outlet of the high-pressure gas tank, and becomes the fuel required for the continuous operation of the natural gas engine, so that the natural gas engine is not affected by oil and gas. The influence of the wellhead pressure change of the wellhead Xmas tree ensures the continuous pumping and increasing of natural gas production by the pumping device; the natural gas entering the high-pressure gas tank is also divided into three pipelines from the control gas port of the high-pressure gas tank through the control gas pipe to transport the high-pressure gas outward: through The pipeline Ⅰ is sent to the liquid level control valve Ⅰ, through the pipeline Ⅱ to the reversing port C of the pneumatic control three-way valve, and through the pipeline Ⅲ to the liquid level control valve Ⅱ; when the gas-liquid separation tank stores the liquid at the bottom of the tank When the level is high, the liquid level control valve Ⅱ conducts, and the high-pressure gas from the control port of the high-pressure gas tank acts on the pneumatic control port S of the pneumatic control stop valve through the pipeline Ⅲ and liquid level control valve Ⅱ, so that the inlet of the pneumatic control stop valve A and outlet B are connected, and the liquid in the gas-liquid separation tank is discharged from the gas-liquid separation tank through the liquid outlet of the gas-liquid separation tank, the inlet A and outlet B of the pneumatic control stop valve, and the one-way valve I under the action of the natural gas pressure in the tank. The liquid inlet port of the gas-liquid isolation tank is discharged to the liquid storage chamber of the gas-liquid isolation tank. When the liquid level in the liquid storage chamber of the gas-liquid isolation tank is high, the liquid level control valve I installed on the liquid storage chamber of the gas-liquid isolation tank Through, the high-pressure gas from the control port of the high-pressure gas tank acts on the pneumatic control port K of the pneumatic control three-way valve through the pipeline I and the liquid level control valve I, so that the inlet A and the reversing port C of the pneumatic control three-way valve Conduction, the high-pressure gas from the control port of the high-pressure gas tank enters the liquid storage chamber through the pipeline II, the reversing port C and the inlet A of the pneumatic control three-way valve, and the liquid in the liquid storage chamber is under high pressure in the pipeline II. Under the action of gas pressure, it is discharged from the liquid outlet of the liquid storage chamber to the delivery main pipe;
当气液分离罐储存在罐底内的液体液位低时，液位控制阀Ⅱ截止，来管路Ⅲ内气体不能通过液位控制阀Ⅱ进入气动控制截止阀气动控制口S，使气动控制截止阀进口A和出口B截止，气液分离罐的出液口与储液腔8U的进液口不再连通，保证了气液分离罐内的天然气不能进入到气液隔离罐储液腔；当储液腔内的液体排送到输送总管后，储液腔内的液体液位降低，使液位控制阀Ⅰ截止，来自管路Ⅰ内气体不能通过液位控制阀Ⅰ进入气动控制三通阀的气动控制口，使气动控制三通阀的口A和换向口C截止，换向为气动控制三通阀进口A和出口B导通，管路Ⅱ内高压气体不再通过气动控制三通阀进口A和换向口C进入储液腔，储液腔内的保存的高压气体通过高压气口、气动控制三通阀的进口A和出口B泄放到油气腔的低压气口，使储液腔内的压力降低，当储液腔的压力低于气液分离罐内压力后，气液分离罐内的液体在液位控制阀Ⅱ的控制和罐内天然气压力作用下，再次排送到储液腔，直到气液分离罐内的液体和储液腔内的液体液位都不高后暂停排液工作，完成气液分离罐内液体分批向储液腔的排送和储液腔内液体分成多次排送到输送总管；进入输送总管的液体，在来自于在抽压装置抽压作用下、通过冷却器冷却后经单向阀Ⅲ进入输送总管的高压低温天然气携带下排送到集气站集输管道，降低了集气站集输管道内输送压力，保证油气井井筒内天然气携带井下积液能力，实现了对低产油气井进行抽压增产输送控制和含液油气井井筒内积液在井上进行油气分离排送控制，含液油气井井筒内积液和天然气形成的气液混合物被不断携带到油气井上，清除了含液油气井井筒内积液的沉积，使含液油气井井下没有了液体阻塞，实现了油气井口采气树的输送压力低于集气站集输管道压力时低产油气井的抽压增产功能。When the liquid level of the gas-liquid separation tank stored in the bottom of the tank is low, the liquid level control valve Ⅱ is cut off, and the gas in the incoming pipeline Ⅲ cannot enter the pneumatic control port S of the pneumatic control cut-off valve through the liquid level control valve Ⅱ, so that the pneumatic control The inlet A and outlet B of the cut-off valve are closed, and the liquid outlet of the gas-liquid separation tank is no longer connected to the liquid inlet of the
本发明提出的一种含液天然气油气井排液方法和排液装置具有以下特点：A liquid drainage method and a liquid drainage device for oil and gas wells containing liquid natural gas proposed by the present invention have the following characteristics:
1）对含液油气井井筒内积液在井上进行油气分离排送控制；2）对低产油气井进行抽压增产输送控制；3）使含液油气井井筒内多积液在井上分离后自动分批多次排送，降低集气站集输管道输送压力，保证油气井井筒内天然气携带井下积液能力；4）把抽压装置后高温高压天然气冷却为高压低温天然气输送；5）天然气发动机不受油气井口压力变化影响，保证了抽压装置的连续抽压增产工作；6）纯净天然气进入抽压装置，保证了抽压装置的安全工作；7）利用天然气压力把液体排送到运液车，便于液体人工收集；此外，本发明可推广用于含天然气的油井回收天然气。1) Carry out oil and gas separation and discharge control on the wellbore of liquid-bearing oil and gas wells; 2) Control pumping and increasing production and transportation of low-yield oil and gas wells; 3) Automatically separate the excess liquid in the wellbore of liquid-bearing oil and gas wells Batches are sent multiple times to reduce the transmission pressure of the gas gathering station's gathering and transportation pipelines and ensure the ability of the natural gas in the wellbore of the oil and gas well to carry downhole liquid; 4) Cool the high-temperature and high-pressure natural gas after the pumping device into high-pressure and low-temperature natural gas for transmission; 5) Natural gas engine Not affected by oil and gas wellhead pressure changes, it ensures the continuous pumping and production increase of the pumping device; 6) Pure natural gas enters the pumping device to ensure the safe operation of the pumping device; 7) Uses the natural gas pressure to discharge the liquid to the liquid transport The vehicle is convenient for artificial collection of liquid; in addition, the present invention can be popularized to recover natural gas from oil wells containing natural gas.
附图说明Description of drawings
图1 为本发明的系统流程图。Fig. 1 is a system flow chart of the present invention.
图中：1、积液；2、天然气；3、井口采气树；4、采气总管；5、气液分离罐，5Y、液体；5a、油气入口；5b、油气出口；5c、油气旁通口；5d、排污口；5h、出液口Ⅰ；5f、排空口Ⅰ；6、减压阀；7、单向阀Ⅳ；8、气液隔离罐（包含有：油气腔8W；储液腔8U；纯气腔8G；液体8Y；进气口Ⅰ8a；出气口Ⅰ8b；进液口8c；高压气口8d；出液口Ⅱ8h；低压气口8i；排空口Ⅱ8f；安装口Ⅰ8m；安装口Ⅱ8n）；9、低压气管；10、抽压装置（包含有：抽气口10a；出气口Ⅱ10b）；11、高压气管；12、冷却器（包含有：进气口Ⅱ12a，出气口Ⅲ12b）；13、单向阀Ⅲ；14、输送总管；15、调压阀；16、高压气罐（包含有：进气口Ⅲ16a；控制气口16b；出气口Ⅳ16c；充放口16d）；17、调压稳压阀；18、天然气发动机（包含有：燃气截断阀）；19、控制气管；20、液位控制阀；21、气动控制三通阀；22、液位控制阀；23、气动控制截止阀；24、单向阀Ⅰ；25、单向阀Ⅴ；26、单向阀Ⅱ；27、手动截止阀Ⅰ；28、输气管路；29、手动截止阀Ⅱ；30、手动截止阀Ⅲ；31、高压排空阀；32、低压排空阀；33、集气站集输管道，34、管路Ⅰ；35、管路Ⅱ；36、管路Ⅲ。In the figure: 1, effusion; 2, natural gas; 3, wellhead gas tree; 4, gas production main; 5, gas-liquid separation tank, 5Y, liquid; 5a, oil and gas inlet; 5b, oil and gas outlet; 5c, oil and
具体实施方式Detailed ways
本发明以一口含液低产油气井的生产参数应用实例，对本发明的内容进行详细说明；The present invention uses the production parameter application example of a liquid-bearing low-yield oil and gas well to describe the content of the present invention in detail;
本发明在油气井口生产现场断开井口采气树3与集气站集输管道33之间的连接管路，安装本含液低产油气井排液和增产装置，把本装置的采气总管4与井口采气树3连接，输送总管14与集气站集输管道33连接；所述的采气总管4是本排液装置的入口，所述的输送总管14是本装置的出口；所述的采气总管4与井口采气树3连接、输送总管14与集气站集输管道33连接后，本装置从含液油气井井口采气树3到集气站集输管道33的排送过程，对含液油气井井筒内积液在井上进行油气分离排送控制，对低产油气井进行抽压增产输送控制，完成含液低产油气井排液和低产油气井增产； 该实施例中，井口采气树3是油气井井口上现有设备，是本技术领域公知的用于调节气井压力和产量的设备；集气站集输管道33是油气井井口上现有管路，是本技术领域公知的用于连接采气树3与集气站之间的气液输送管路；采气总管4是本排液装置系统入口，输送总管14是本排液装置系统出口；The present invention disconnects the connecting pipeline between the gas tree 3 at the wellhead and the gathering pipeline 33 of the gas-gathering station at the oil and gas wellhead production site, installs the liquid drainage and production stimulation device for the low-yield oil and gas well containing liquid, and connects the gas production main pipe 4 of the device It is connected with the gas tree 3 at the wellhead, and the delivery main pipe 14 is connected with the gathering pipeline 33 of the gas gathering station; the gas production main pipe 4 is the inlet of the liquid drainage device, and the delivery main pipe 14 is the outlet of the device; After the gas production main pipe 4 is connected to the wellhead Xmas tree 3, and the delivery main pipe 14 is connected to the gas gathering station gathering pipeline 33, the discharge and delivery of the device from the wellhead gas tree 3 of the liquid-containing oil and gas well to the gas gathering station gathering pipeline 33 In the process, oil and gas separation and discharge control are carried out on the wellbore of liquid-bearing oil and gas wells, and control of pumping and increasing production is carried out for low-yielding oil and gas wells, so as to complete liquid drainage and production stimulation of low-yielding oil and gas wells; in this embodiment, The wellhead Xmas tree 3 is the existing equipment on the wellhead of the oil and gas well, and is the equipment known in the art for regulating the pressure and production of the gas well; A well-known gas-liquid transmission pipeline used to connect the gas tree 3 and the gas gathering station; the gas production main pipe 4 is the inlet of the liquid drainage device system, and the delivery main pipe 14 is the outlet of the liquid drainage device system;
本发明在该型含液天然气油气井应用，如图1所示，一种含液低产油气井的排液装置，排液装置设置在井口采气树3与集气站集输管道33之间的连接管路上；所述的排液装置具有气液分离罐5；所述的气液分离罐5内设置有液体5Y，并由所述液体5Y的液面将气液分离罐的内腔分隔为气油腔和液体腔；气液分离罐所述气油腔的油气进口5a连通有采气总管4；所述的采气总管4与所述的井口采气树3相连通作为排液装置的入口；气液分离罐所述液体腔的出液口Ⅰ5h连通气液隔离罐的所述储液腔8y，并在所述的出液口Ⅰ5h与所述的储液腔8y之间设置气动控制截止阀23和单向阀Ⅰ24；气液分离罐对应所述的气油腔还设置有油气旁通口5c；所述的油气旁通口5c通过单向阀Ⅱ26、手动截止阀27和输气管路14连接到输送总管；所述的输气管路14为排液装置的出口；所述的气液分离罐的顶部设置有排空口Ⅰ5f，底部设置有排污口5d；气液分离罐所述气油腔的油气出口5b连接气液隔离罐8的油气腔8W；The present invention is applied to this type of liquid-containing natural gas oil and gas well, as shown in Figure 1, a liquid drainage device for a liquid-containing low-yield oil and gas well, and the liquid drainage device is arranged between the gas tree 3 at the wellhead and the gathering pipeline 33 of the gas gathering station on the connecting pipeline; the liquid discharge device has a gas-liquid separation tank 5; the liquid 5Y is arranged in the gas-liquid separation tank 5, and the inner cavity of the gas-liquid separation tank is separated by the liquid surface of the liquid 5Y It is a gas-oil chamber and a liquid chamber; the oil-gas inlet 5a of the gas-oil chamber of the gas-liquid separation tank is connected with a gas production main pipe 4; the gas production main pipe 4 is connected with the wellhead gas tree 3 as a liquid discharge device The inlet of the liquid chamber of the gas-liquid separation tank I5h is connected to the liquid storage chamber 8y of the gas-liquid isolation tank, and a pneumatic valve is set between the liquid outlet I5h and the liquid storage chamber 8y Control the shut-off valve 23 and the one-way valve I24; the gas-liquid separation tank is also provided with an oil-gas bypass port 5c corresponding to the gas-oil chamber; the oil-gas bypass port 5c passes through the check valve II26, the manual shut-off valve 27 and the output The gas pipeline 14 is connected to the delivery main pipe; the gas pipeline 14 is the outlet of the liquid discharge device; the top of the gas-liquid separation tank is provided with an emptying port I5f, and the bottom is provided with a sewage outlet 5d; The oil-gas outlet 5b of the gas-oil chamber is connected to the oil-gas chamber 8W of the gas-liquid isolation tank 8;
所述的气液隔离罐8内部从上到下依次分为纯气腔8G、油气腔8W和储液腔8U；纯气腔8G与油气腔8W之间采用捕雾器隔离，油气腔8W与储液腔8U是相互密封隔离的两个腔体；The interior of the gas-
所述纯气腔8G的圆周上设有出气口Ⅰ8b和排空口Ⅱ8f；所述的出气口Ⅰ8b连通抽压装置10的抽气口10a，抽压装置的出气口Ⅱ10b通过高压气管连接到冷却器12的进气口Ⅱ12a，冷却器的出气口Ⅲ12b连接到输送总管14；并在所述的冷却器的出气口Ⅲ12b与输送总管14之间设置有单向阀Ⅲ；所述油气腔8W的圆周上设有进气口Ⅰ8a、低压气口8i和安装口Ⅰ8m，所述的进气口Ⅰ连通到气液分离罐的油气出口；所述的低压气口8i连接在气动控制三通阀21的出口B上；所述储液腔8U的圆周上具有进液口8c、高压气口8d、出液口Ⅱ8h和安装口Ⅱ8n；进液口8c通过单向阀Ⅰ1、气动控制截止阀23到气液分离罐的出液口Ⅰ5h，高压气口8d连接到气动控制三通阀21的进气口A，所述的出液口Ⅱ8h连通输送总管14；所述油气腔的安装口Ⅰ8m与储液腔的安装口Ⅱ8n之间通过单向阀Ⅳ连通；The circumference of the pure air chamber 8G is provided with an air outlet I8b and an exhaust port II8f; the air outlet I8b is connected to the air outlet 10a of the pumping device 10, and the air outlet II10b of the pumping device is connected to the cooler through a high-pressure air pipe The air inlet II12a of 12, the air outlet III12b of the cooler are connected to the conveying main pipe 14; and a check valve III is arranged between the air outlet III12b of the cooler and the conveying main pipe 14; the circumference of the oil-gas cavity 8W Air inlet I8a, low-pressure air port 8i and installation port I8m are provided on the top, the air inlet I is connected to the oil and gas outlet of the gas-liquid separation tank; the low-pressure air port 8i is connected to the outlet B of the pneumatic control three-way valve 21 Above; the circumference of the liquid storage chamber 8U has a liquid inlet 8c, a high-pressure gas port 8d, a liquid outlet II8h and an installation port II8n; the liquid inlet 8c passes through the one-way valve I1 and the pneumatic control shut-off valve 23 to the gas-liquid separation tank The liquid outlet I5h and the high-pressure air port 8d are connected to the air inlet A of the pneumatic control three-way valve 21, and the liquid outlet II8h is connected to the delivery main pipe 14; the installation port I8m of the oil and gas chamber is connected to the installation port of the liquid storage chamber Ⅱ and 8n are connected through one-way valve Ⅳ;
排液装置还设置有高压气罐16；所述的高压气罐16在圆周上设有进气口Ⅲ16a、控制气口16b、出气口Ⅳ16c和充放口；所述的进气口Ⅲ16a连接到冷却器12的出气口Ⅲ12b，控制气口16b通过控制气管19分为三条管路：管路Ⅰ34连接到安装在气液隔离罐所述储液腔上的液位控制阀Ⅰ20，通过液位控制阀Ⅰ20再连接到气动控制三通阀21的气动控制口K，管路Ⅱ35连接到气动控制三通阀21的换向口C，管路Ⅲ36连接到安装在气液分离罐5上的液位控制阀Ⅱ22上，通过液位控制阀Ⅱ22再连接到气动控制截止阀23的气动控制口S；出气口Ⅳ16c连接到天然气发动机上的燃气截断阀17；充放口连接输气管路；气动控制三通阀21的进口A连通气液隔离罐的高压气口8d；所述的液位控制阀Ⅰ21在气液隔离罐所述储液腔内液体的液位高时导通，来自于高压气罐控制气口的高压气体，通过控制气管的管路Ⅰ34、液位控制阀Ⅰ21作用于气动控制三通阀气动控制口K，使气动控制三通阀的进口A和换向口C导通，液位控制阀Ⅰ21在气液隔离罐储液腔的液体液位低时截止，气动控制三通阀气动控制口K失去高压作用气使进口A和出口B导通；液位控制阀Ⅱ22在气液分离罐内的液体液位低时截止；The liquid discharge device is also provided with a high-pressure gas tank 16; the high-pressure gas tank 16 is provided with an air inlet III 16a, a control air port 16b, an air outlet IV 16c and a charging port on the circumference; the air inlet III 16a is connected to the cooling The air outlet III12b of the device 12, the control air port 16b is divided into three pipelines through the control air pipe 19: the pipeline I34 is connected to the liquid level control valve I20 installed on the liquid storage chamber of the gas-liquid isolation tank, and through the liquid level control valve I20 Then connect to the pneumatic control port K of the pneumatic control three-way valve 21, the pipeline II35 is connected to the reversing port C of the pneumatic control three-way valve 21, and the pipeline III36 is connected to the liquid level control valve installed on the gas-liquid separation tank 5 On Ⅱ22, connect to the pneumatic control port S of the pneumatic control shut-off valve 23 through the liquid level control valve Ⅱ22; the gas outlet Ⅳ16c is connected to the gas shut-off valve 17 on the natural gas engine; the charging and discharging port is connected to the gas pipeline; the pneumatic control three-way valve The inlet A of 21 communicates with the high-pressure gas port 8d of the gas-liquid isolation tank; the liquid level control valve I21 is connected when the liquid level of the liquid in the liquid storage chamber of the gas-liquid isolation tank is high, and the pressure from the control gas port of the high-pressure gas tank The high-pressure gas acts on the pneumatic control port K of the pneumatic control three-way valve through the pipeline I34 of the control air pipe and the liquid level control valve I21, so that the inlet A of the pneumatic control three-way valve and the reversing port C are connected, and the liquid level control valve I21 When the liquid level of the liquid storage chamber of the gas-liquid isolation tank is low, the pneumatic control three-way valve pneumatic control port K loses the high-pressure effect and makes the inlet A and outlet B conduct; the liquid level control valve II22 in the gas-liquid separation tank Cut off when the liquid level is low;
气动控制截止阀23上有进口A、出口B和气动控制口S；所述的进口A通过管路连接到气液分离罐的出液口5h, 出口B通过单向阀Ⅰ与气液隔离罐的进液口8c相连通； 气动控制口S排液装置控制气口的管路Ⅲ36相连通；气动控制截止阀的气动控制口S失去高压作用气使进口A和出口B截止；There is an inlet A, an outlet B and a pneumatic control port S on the pneumatic
为了实现对含液油气井井筒内2355dm3积液在井上进行油气分离排送控制，所述的气液分离罐5用于收集和分离由油气井井筒内3.0MPa天然气2携带到井上的2355dm3多积液1，分离后的3.0MPa天然气通过气液分离罐5输送到输送总管14，携带到油气井井上的2355dm3多积液1通过气液分离罐5分批排送到气液隔离罐8，经气液隔离罐8分成10次排送到输送总管14，随进入输送总管14内的天然气携带排送到集气站集输管道33；采气总管4与井口采气树3连接后，气液分离罐5油气入口5a通过采气总管4、井口采气树3与含液油气井井筒连通；当油气井口采气树3输送压力高于集气站集输管道33压力时，打开手动截止阀Ⅰ27，含液油气井井筒内2355dm3积液1和3.0MPa天然气2形成的气液混合物通过采气树3、采气总管4和气液分离罐5油气入口5a进入罐内；经气液分离罐5分离出的2355dm3液体5Y储存在3500dm3的罐底，经气液分离罐5分离出的油气井3.0MPa高压天然气通过气液分离罐5油气旁通口5c、单向阀Ⅱ26、手动截止阀Ⅰ27、输气管路28进入单向阀Ⅲ13后的输送总管14输送到集气站集输管道33，完成含液油气井井口采气树3输送压力3.0MPa高于集气站集输管道33压力1.5MPa时输送天然气生产工作；安装在冷却器12出气口12b与输送总管14之间的单向阀Ⅲ13，用于保证输送总管14内的气体或液体不能倒流进入冷却器12出气口12b；在油气井高压天然气从气液分离罐5油气旁通口5c输送到输送总管14过程，打开手动截止阀29，3.0MPa高压天然气通过气液分离罐5油气旁通口5c、单向阀26、手动截止阀Ⅰ27、输气管路28、手动截止阀Ⅱ29从高压气罐16充放口16d进入高压气罐16，从高压气罐16控制气口16b通过控制气管19分为3条管路向外输送3.0MPa高压气体：通过管路Ⅰ34输送到安装在气液隔离罐8储液腔8U上的液位控制阀20，通过管路Ⅱ35输送到气动控制三通阀21换向口C，通过管路Ⅲ36输送到安装在气液分离罐5上的液位控制阀22；当气液分离罐5储存在罐底液体5Y液位高于0.5m时，安装在气液分离罐5上的液位控制阀Ⅱ22导通，来自于高压气罐16控制气口16b的3.0MPa高压气体，通过控制气管19管路3、液位控制阀Ⅱ22作用于气动控制截止阀23气动控制口S，使气动控制截止阀23进口A和出口B导通，气液分离罐5液体5Y在罐内3.0MPa天然气压力作用下，通过气液分离罐5出液口5h、气动控制截止阀23进口A和出口B、单向阀24从气液隔离罐8进液口8c排送到气液隔离罐8储液腔8U，储液腔8U的储液容积是230 dm3；当气液隔离罐8储液腔8U液体8Y液位高于0.5m时，安装在气液隔离罐8储液腔8U上的液位控制阀20导通，来自于高压气罐16控制气口16b的3.0MPa高压气体，通过控制气管19的管路Ⅰ、液位控制阀Ⅰ20作用于气动控制三通阀21气动控制口K，使气动控制三通阀21进口A和换向口C导通，来自于高压气罐16控制气口16b的3.0MPa高压气体，通过控制气管19管路2、气动控制三通阀21换向口C和进口A进入气液隔离罐8储液腔8U，气液隔离罐8储液腔8U内的230 dm3液体8Y在控制气管19管路2内3.0MPa高压气体压力作用下，从气液隔离罐8储液腔8U出液口8h通过管路和单向阀25排送到单向阀Ⅲ13后的输送总管14；安装在油气腔8W的8m接口与储液腔8U的8n接口之间的单向阀Ⅳ7，用于保证气液隔离罐8储液腔8U内的高压气体不能倒流进入气液隔离罐8油气腔8W；单向阀24用于保证气动控制截止阀23进口A和出口B导通期间，气液隔离罐8储液腔8U液体8Y向输送总管14排送时不能倒流进入气液分离罐5；安装在气液隔离罐8储液腔8U出液口8h后的单向阀25，用于保证输送总管14内的天然气和液体不能倒流进入气液隔离罐8储液腔8U；当气液分离罐5储存在罐底液体5Y液位低时，安装在气液分离罐5上的液位控制阀22截止，来自于高压气罐16控制气口16b控制气管19管路3内3.0MPa气体不能通过液位控制阀22进入气动控制截止阀23气动控制口S，使气动控制截止阀23进口A和出口B截止，气液分离罐5出液口5h与气液隔离罐8储液腔8U进液口8c不再连通，保证了气液分离罐5内的3.0MPa天然气不能进入到气液隔离罐8储液腔8U；当气液隔离罐8储液腔8U内的230 dm3液体8Y排送到输送总管14后，气液隔离罐8储液腔8U液体8Y液位降低，使安装在气液隔离罐8储液腔上的液位控制阀 20截止，来自于高压气罐16控制气口16b控制气管19管路Ⅰ内3.0MPa气体不能通过液位控制阀Ⅰ20进入气动控制三通阀21气动控制口K，使气动控制三通阀21进口A和换向口C截止，换向为气动控制三通阀21进口A和出口B导通，控制气管19管路Ⅱ内3.0MPa高压气体不再通过气动控制三通阀21进口A和换向口C进入气液隔离罐8储液腔8U，气液隔离罐8储液腔8U内保存的3.0MPa高压气体通过高压气口8d、气动控制三通阀21进口A和出口B泄放到气液隔离罐8油气腔8W低压气口8i，使气液隔离罐8储液腔8U内的压力降低，当储液腔8U的压力低于气液分离罐5内3.0MPa压力后，气液分离罐5液体5Y在液位控制阀22控制和罐内3.0MPa天然气压力作用下，再次排送到气液隔离罐8的储液腔8U，直到气液分离罐5液体5Y和气液隔离罐8储液腔8U液体8Y液位都不高后暂停排液工作，完成气液分离罐5内2355dm3液体5Y分批向气液隔离罐8储液腔8U的排送和气液隔离罐8储液腔8U内230 dm3液体8Y分成10次排送到输送总管14；进入输送总管14的液体8Y，在来自于气液分离罐5油气旁通口5c进入输送总管14的天然气携带下排送到集气站集输管道33，降低了集气站集输管道33内输送压力，保证油气井井筒内天然气携带井下积液能力，达到了含液油气井井筒内积液在井上进行油气分离排送控制目的；手动打开气液分离罐5排污口5d连接的手动截止阀Ⅲ30，利用罐内天然气压力作用把气液分离罐5液体5Y排送到运液车，以便于气液分离罐5液体5Y人工收集；气液分离罐5排空口5f连接的高压排空阀31，用于保护气液分离罐5的安全；气液隔离罐8纯气腔8G排空口8f连接的低压排空阀32，用于保护气液隔离罐8的安全；天然气发动机与高压气罐之间安装减压稳压阀17用于保证天然气发动机运行所需燃料的稳定；In order to realize oil and gas separation and discharge control on the 2355dm3 accumulated liquid in the wellbore of the oil and gas well containing liquid, the gas-liquid separation tank 5 is used to collect and separate the 2355dm3 accumulated liquid carried to the well by the 3.0MPa natural gas 2 in the wellbore of the oil and gas well Liquid 1, the separated 3.0MPa natural gas is transported to the delivery main pipe 14 through the gas-liquid separation tank 5, and the 2355 dm3 excess liquid 1 carried to the oil and gas well is discharged in batches to the gas-liquid isolation tank 8 through the gas-liquid separation tank 5, and then The gas-liquid isolation tank 8 is divided into 10 times and discharged to the delivery main pipe 14, and is carried along with the natural gas entering the delivery main pipe 14 to the gas-gathering station gathering pipeline 33; The oil and gas inlet 5a of the separation tank 5 communicates with the wellbore of the liquid oil and gas well through the gas production main pipe 4 and the wellhead Xmas tree 3; when the delivery pressure of the oil and gas wellhead Xmas tree 3 is higher than the pressure of the gathering pipeline 33 of the gas gathering station, the manual stop valve is opened Ⅰ27, the gas-liquid mixture formed by 2355dm3 liquid accumulation 1 and 3.0MPa natural gas 2 in the wellbore of liquid-bearing oil and gas well enters the tank through the gas tree 3, the gas production main pipe 4 and the oil and gas inlet 5a of the gas-liquid separation tank 5; through the gas-liquid separation tank 5 The separated 2355dm3 liquid 5Y is stored at the bottom of the 3500dm3 tank, and the 3.0MPa high-pressure natural gas from the oil and gas well separated by the gas-liquid separation tank 5 passes through the oil-gas bypass port 5c of the gas-liquid separation tank 5, one-way valve II26, manual stop valve I27, After the gas transmission pipeline 28 enters the one-way valve III13, the transmission main pipe 14 is transported to the gas gathering station gathering pipeline 33, and the delivery pressure of the gas tree 3 at the wellhead of the liquid oil and gas well is 3.0 MPa higher than that of the gas gathering station gathering pipeline 33. The pressure is 1.5 MPa Natural gas production work; the one-way valve III13 installed between the gas outlet 12b of the cooler 12 and the delivery main pipe 14 is used to ensure that the gas or liquid in the delivery main pipe 14 cannot flow back into the gas outlet 12b of the cooler 12; in oil and gas wells During the process of transporting high-pressure natural gas from the oil-gas bypass port 5c of the gas-liquid separation tank 5 to the delivery main pipe 14, the manual stop valve 29 is opened, and the 3.0MPa high-pressure natural gas passes through the oil-gas bypass port 5c of the gas-liquid separation tank 5, the one-way valve 26, and the manual stop valve Ⅰ27, gas pipeline 28, manual stop valve Ⅱ29 enters the high-pressure gas tank 16 from the filling and discharging port 16d of the high-pressure gas tank 16, and the control gas port 16b of the high-pressure gas tank 16 is divided into 3 pipelines through the control gas pipe 19 to deliver 3.0MPa high-pressure gas to the outside : Transported to the liquid level control valve 20 installed on the liquid storage chamber 8U of the gas-liquid isolation tank 8 through the pipeline I34, transported to the reversing port C of the pneumatic control three-way valve 21 through the pipeline II35, and transported to the installation through the pipeline III36 The liquid level control valve 22 on the gas-liquid separation tank 5; when the liquid level of the liquid 5Y stored at the bottom of the gas-liquid separation tank 5 is higher than 0.5m, the liquid level control valve II22 installed on the gas-liquid separation tank 5 conducts , the 3.0MPa high-pressure gas from the control gas port 16b of the high-pressure gas tank 16 acts on the pneumatic control port S of the pneumatic control shut-off valve 23 through the control gas pipe 19 pipeline 3 and the liquid level control valve II 22, so that the pneumatic control shut-off valve 23 inlet A and The outlet B is connected, and the liquid 5Y in the gas-liquid separation tank 5 is under the action of 3.0MPa natural gas pressure in the tank. The liquid inlet 8c of the liquid isolation tank 8 is discharged to the liquid storage chamber 8U of the gas-liquid isolation tank 8, and the liquid storage volume of the liquid storage chamber 8U is 230 dm3; when the liquid level of the gas-liquid isolation tank 8 m, the liquid level control valve 20 installed on the liquid storage chamber 8U of the gas-liquid isolation tank 8 conducts, and the 3.0MPa high-pressure gas from the control gas port 16b of the high-pressure gas tank 16 passes through the pipeline I of the control gas pipe 19, the liquid level The control valve I20 acts on the pneumatic control port K of the pneumatic control three-way valve 21, so that the inlet A of the pneumatic control three-way valve 21 and the reversing port C are connected, and the 3.0MPa high-pressure gas from the control gas port 16b of the high-pressure gas tank 16 passes through the control Gas pipe 19 pipeline 2, pneumatic control three-way valve 21 reversing port C and inlet A enter the gas-liquid isolation tank 8 liquid storage chamber 8U, and the 230 dm3 liquid 8Y in the gas-liquid isolation tank 8 liquid storage chamber 8U is in the control air pipe 19 tube Under the action of 3.0MPa high-pressure gas pressure in the road 2, the liquid outlet 8h of the liquid storage chamber 8U of the gas-liquid isolation tank 8 is discharged through the pipeline and the check valve 25 to the delivery main pipe 14 behind the check valve III13; installed in the oil and gas chamber The one-way valve IV7 between the 8m interface of 8W and the 8n interface of the liquid storage chamber 8U is used to ensure that the high-pressure gas in the liquid storage chamber 8U of the gas-liquid isolation tank 8 cannot flow back into the gas-liquid isolation tank 8 oil-gas chamber 8W; one-way The valve 24 is used to ensure that during the conduction period between the inlet A and the outlet B of the pneumatic control shut-off valve 23, the liquid 8Y in the liquid storage chamber 8U of the gas-liquid isolation tank 8 cannot flow back into the gas-liquid separation tank 5 when it is discharged to the delivery main pipe 14; it is installed in the gas-liquid separation tank 5 The one-way valve 25 after the liquid outlet 8h of the liquid storage chamber 8U of the isolation tank 8 is used to ensure that the natural gas and liquid in the delivery main pipe 14 cannot flow back into the liquid storage chamber 8U of the gas-liquid isolation tank 8; when the gas-liquid separation tank 5 is stored in When the liquid level of the tank bottom liquid 5Y is low, the liquid level control valve 22 installed on the gas-liquid separation tank 5 is closed, and the 3.0 MPa gas in the control gas pipe 19 pipeline 3 from the high-pressure gas tank 16 control gas port 16b cannot pass through the liquid level control valve 22 enters the pneumatic control shut-off valve 23 pneumatic control port S, so that the inlet A and outlet B of the pneumatic control shut-off valve 23 are closed, and the liquid outlet 5h of the gas-liquid separation tank 5 and the liquid storage chamber 8U liquid inlet 8c of the gas-liquid separation tank 8 are no longer Connected to ensure that the 3.0MPa natural gas in the gas-liquid separation tank 5 cannot enter the liquid storage chamber 8U of the gas-liquid isolation tank 8; , the gas-liquid isolation tank 8 liquid storage chamber 8U liquid 8Y liquid level lowers, so that the liquid level control valve 20 installed on the gas-liquid isolation tank 8 liquid storage chamber is cut off, and the control gas port 16b from the high-pressure gas tank 16 controls the air pipe 19 pipeline The 3.0MPa gas in Ⅰ cannot pass through the liquid level control valve Ⅰ20 and enter the pneumatic control port K of the pneumatic control three-way valve 21, so that the inlet A of the pneumatic control three-way valve 21 and the reversing port C are closed, and the reversing is the inlet of the pneumatic control three-way valve 21 A and outlet B are connected, and the 3.0MPa high-pressure gas in the control air pipe 19 pipeline II no longer enters the gas-liquid isolation tank 8 liquid storage chamber 8U through the pneumatic control three-way valve 21 inlet A and reversing port C, and the gas-liquid isolation tank 8 The 3.0MPa high-pressure gas stored in the liquid storage chamber 8U is discharged into the gas-liquid isolation tank 8 through the high-pressure gas port 8d, the pneumatic control three-way valve 21 inlet A and outlet B, and the gas-liquid isolation tank 8W low-pressure gas port 8i, so that the gas-liquid isolation tank 8 stores liquid The pressure in the cavity 8U decreases. When the pressure in the liquid storage cavity 8U is lower than the 3.0MPa pressure in the gas-liquid separation tank 5, the liquid 5Y in the gas-liquid separation tank 5 is under the control of the liquid level control valve 22 and the 3.0MPa natural gas pressure in the tank. , and discharge to the liquid storage chamber 8U of the gas-liquid isolation tank 8 again, until the liquid level of the gas-liquid separation tank 5 liquid 5Y and the liquid storage chamber 8U liquid 8Y of the gas-liquid isolation tank 8 are not high, then suspend the liquid discharge work to complete the gas-liquid separation The discharge of 2355 dm3 liquid 5Y in tank 5 to the gas-liquid isolation tank 8 liquid storage chamber 8U in batches and the 230 dm3 liquid 8Y in the gas-liquid isolation tank 8 liquid storage chamber 8U are divided into 10 times and discharged to the delivery main pipe 14; The liquid 8Y is discharged to the gathering pipeline 33 of the gas gathering station under the carrying of the natural gas from the oil-gas bypass port 5c of the gas-liquid separation tank 5 entering the delivery main pipe 14, which reduces the delivery pressure in the gathering pipeline 33 of the gas gathering station and ensures oil and gas The ability of the natural gas in the wellbore to carry the downhole liquid has achieved the purpose of controlling the liquid in the wellbore of the liquid-containing oil and gas well to carry out oil and gas separation and discharge on the well; manually open the manual shut-off valve III30 connected to the sewage outlet 5d of the gas-liquid separation tank 5, and use the The natural gas pressure discharges the liquid 5Y of the gas-liquid separation tank 5 to the liquid transport vehicle for manual collection of the liquid 5Y of the gas-liquid separation tank 5; the high-pressure emptying valve 31 connected to the emptying port 5f of the gas-liquid separation tank 5 is used to protect The safety of the gas-liquid separation tank 5; the low-pressure drain valve 32 connected to the gas-liquid isolation tank 8 pure gas cavity 8G emptying port 8f is used to protect the safety of the gas-liquid separation tank 8; The pressure stabilizing valve 17 is used to ensure the stability of the required fuel for the operation of the natural gas engine;
当油气井口采气树3输送压力1.0MPa低于集气站集输管道33压力1.5MPa时，油气井口采气树3天然气不能通过气液分离罐5进入输送总管14输送到集气站集输管道33，此时油气井的天然气产气量为0，安装在气液分离罐5出液口5h后的单向阀26，用于保证输送总管14内的1.5MPa天然气和液体不能倒流进入液分离罐5；为了实现对低产油气井进行抽压增产输送控制，此时打开手动截止阀29，输送总管14内的1.5MPa天然气通过输气管路28、手动截止阀29从高压气罐16充放口16d向高压气罐16充气，进入高压气罐16内的1.5MPa天然气用于为天然气发动机18提供起动燃料；高压气罐16充满后关闭手动截止阀29，起动天然气发动机18运行使抽压装置10工作，在抽压装置10的连续抽压作用下，气液隔离罐8纯气腔8G的纯净天然气通过出气口8b、低压气管9进入抽压装置10抽气口10a从出气口10b成为高于1.5MPa的高压天然气排出，使气液隔离罐8纯气腔8G内天然气随即减少，油气腔8W的天然气立即向纯气腔8G补充，使油气腔8W内天然气跟随减少，气液分离罐5内的天然气经油气出口5b、减压阀6、气液隔离罐8进气口8a向油气腔8W补充后，经减压阀6后进入油气腔8W的天然气压力是0.1MPa，气液分离罐5内天然气跟随减少，含液油气井井筒内积液1和1.0MPa天然气2形成的气液混合物被携带到油气井上，通过采气树3、采气总管4和气液分离罐5油气入口5a向气液分离罐5补充，进入气液分离罐5分离出液体5Y和1.0MPa低压天然气，1.0MPa低压天然气从油气出口5b通过管路和减压阀6降低压力到0.1MPa后，从气液隔离罐8油气腔8W进气口8a进入气液隔离罐8油气腔，经过纯气腔8G与油气腔8W之间捕雾器把含油雾的天然气分离成液体和0.1MPa低压天然气；所述的气液隔离罐8油气腔8W与储液腔8U是两个上下相互隔离的腔体，油气腔8W在储液腔8U上部，液体通过安装在油气腔8W的8m接口与储液腔8U的8n接口之间的单向阀7进入气液隔离罐8储液腔8U储存，携带在0.1MPa天然气中的雾状液体被捕雾材料分离出来落入油气腔8W底部，纯净的0.1MPa低压天然气进入气液隔离罐8纯气腔8G通过出气口8b、低压气管9进入抽压装置10抽气口10a，保证了抽压装置10的安全工作，在抽压装置10抽压作用下，从抽压装置10出气口10b输出压力高于集气站集输管道33压力1.5MPa的100℃高温高压天然气，通过高压气管11进入冷却器12进气口12a，通过冷却器12冷却成30℃的高压低温天然气后，从冷却器12出气口12b通过单向阀13进入输送总管14输送到集气站集输管道33；经冷却器12冷却后的少量30℃高压低温天然气，通过稳压阀15稳压后经高压气罐16进气口16a不断进入高压气罐16，经高压气罐16出气口16c通过管路和减压稳压阀17后成为天然气发动机18连续运行所需的燃料，使天然气发动机18不受油气井口采气树3井口1.0MPa压力变化影响，保证了抽压装置10的连续抽压天然气增产工作；进入高压气罐16的天然气还从高压气罐16控制气口16b通过控制气管19分为3条管路向外输送高于1.5MPa高压气体：通过管路1输送到安装在气液隔离罐8储液腔8U上的液位控制阀20，通过管路2输送到气动控制三通阀21换向口C，通过管路3输送到安装在气液分离罐5上的液位控制阀22；当气液分离罐5储存在罐底液体5Y液位高时，安装在气液分离罐5上的液位控制阀22导通，来自于高压气罐16控制气口16b的高于1.5MPa高压气体，通过控制气管19管路3、液位控制阀22作用于气动控制截止阀23气动控制口S，使气动控制截止阀23进口A和出口B导通，气液分离罐5液体5Y在罐内1.0MPa天然气压力作用下，通过气液分离罐5出液口5h、气动控制截止阀23进口A和出口B、单向阀24从气液隔离罐8进液口8c排送到气液隔离罐8储液腔8U，当气液隔离罐8储液腔8U液体8Y液位高于0.5m时，安装在气液隔离罐8储液腔8U上的液位控制阀20导通，来自于高压气罐16控制气口16b的高于1.5MPa高压气体，通过控制气管19管路1、液位控制阀20作用于气动控制三通阀21气动控制口K，使气动控制三通阀21进口A和换向口C导通，来自于高压气罐16控制气口16b的高于1.5MPa高压气体，通过控制气管19管路2、气动控制三通阀21换向口C和进口A进入气液隔离罐8储液腔8U，气液隔离罐8储液腔8U液体8Y在控制气管19管路2内高于1.5MPa高压气体压力作用下，从气液隔离罐8储液腔8U出液口8h通过管路和单向阀25排送到单向阀13后的输送总管14；安装在油气腔8W的8m接口与储液腔8U的8n接口之间的单向阀Ⅳ7，用于保证气液隔离罐8储液腔8U内的高于1.5MPa高压气体不能倒流进入气液隔离罐8油气腔8W；单向阀24用于保证气动控制截止阀23进口A和出口B导通期间，气液隔离罐8储液腔8U液体8Y向输送总管14排送时不能倒流进入气液分离罐5；安装在气液隔离罐8储液腔8U出液口8h后的单向阀25，用于保证输送总管14内的1.0MPa天然气和液体不能倒流进入气液隔离罐8储液腔8U；当气液分离罐5储存在罐底液体5Y液位低于0.5m时，安装在气液分离罐5上的液位控制阀22截止，来自于高压气罐16控制气口16b控制气管19管路3内高于1.5MPa气体不能通过液位控制阀22进入气动控制截止阀23气动控制口S，使气动控制截止阀23进口A和出口B截止，气液分离罐5出液口5h与气液隔离罐8储液腔8U进液口8c不再连通，保证了气液分离罐5内的1.0MPa天然气不能进入到气液隔离罐8储液腔8U；当气液隔离罐8储液腔8U液体8Y排送到输送总管14后，气液隔离罐8储液腔8U液体8Y液位降低，使安装在气液隔离罐8储液腔上的液位控制阀20截止，来自于高压气罐16控制气口16b控制气管19管路1内高于1.5MPa气体不能通过液位控制阀20进入气动控制三通阀21气动控制口K，使气动控制三通阀21进口A和换向口C截止，换向为气动控制三通阀21进口A和出口B导通，控制气管19管路2内高于1.5MPa高压气体不再通过气动控制三通阀21进口A和换向口C进入气液隔离罐8储液腔8U，气液隔离罐8储液腔8U内的保存的高于1.5MPa高压气体通过高压气口8d、气动控制三通阀21进口A和出口B泄放到压力0.1MPa的气液隔离罐8油气腔8W低压气口8i，使气液隔离罐8储液腔8U内高于1.5MPa的压力降低，当储液腔8U的压力低于气液分离罐5内压力1.0MPa后，气液分离罐5液体5Y在液位控制阀22控制和罐内1.0MPa天然气压力作用下，再次排送到气液隔离罐8的储液腔8U，直到气液分离罐5液体5Y和气液隔离罐8储液腔8U液体8Y液位都不高后暂停排液工作，完成气液分离罐5液体5Y分批向气液隔离罐8储液腔8U的排送和气液隔离罐8储液腔8U液体8Y分成多次排送到输送总管14；进入输送总管14的液体8Y，在来自于在抽压装置10抽压作用下、通过冷却器12冷却后经单向阀13进入输送总管14高于1.5MPa的高压低温天然气携带下排送到集气站集输管道33，降低了集气站集输管道33内输送压力，保证油气井井筒内天然气携带井下积液能力，实现了对低产油气井进行抽压增产输送控制和含液油气井井筒内积液在井上进行油气分离排送控制，含液油气井井筒内积液1和天然气2形成的气液混合物被不断携带到油气井上，清除了含液油气井井筒内积液的沉积，使含液油气井井下没有了液体阻塞，实现了油气井口采气树3的输送压力低于集气站集输管道33压力时低产油气井0产量的抽压增产功能；手动打开气液分离罐5排污口5d连接的手动截止阀30，利用罐内天然气压力作用把气液分离罐5液体5Y排送到运液车，以便于气液分离罐5液体的人工收集；气液分离罐5排空口5f连接的高压排空阀31，用于保护气液分离罐5的安全；气液隔离罐8纯气腔8G排空口8f连接的低压排空阀32，用于保护气液隔离罐8的安全；天然气发动机与高压气罐之间安装减压稳压阀17用于保证天然气发动机运行所需燃料的稳定；When the delivery pressure of Xmas tree 3 at the oil and gas wellhead is 1.0 MPa lower than the pressure of 1.5 MPa in the
本发明中气动控制截止阀23采用电动控制截止阀，气动控制三通阀21采用电动控制三通阀时，通过连接管路的改变，同样能达到本发明的目的。In the present invention, when the pneumatic
本发明中抽压装置10的驱动动力优选使用天然气发动机18，抽压装置10不限于使用天然气发动机18驱动，天然气发动机18安装有燃气截断阀；所述的冷却器12是天然气降温装置。The driving power of the
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101182765A (en)* | 2007-12-12 | 2008-05-21 | 中国石油天然气集团公司 | Single well pressure boost gas production device |
| CN101265868A (en)* | 2008-03-20 | 2008-09-17 | 文立刚 | Method and device for utilizing flow separated from oil gas water separator for integral generation |
| CN202832456U (en)* | 2012-07-26 | 2013-03-27 | 张振荣 | Pressure reduction and yield increase device for natural gas well mouth |
| CN103244824A (en)* | 2012-05-21 | 2013-08-14 | 中国石油天然气股份有限公司 | Pressurizing and heating oil-gas mixed transportation system and method |
| CN203394452U (en)* | 2013-06-27 | 2014-01-15 | 中国石油天然气股份有限公司 | Continuous auxiliary gas lift drainage gas production compression device |
| CN204646211U (en)* | 2015-05-20 | 2015-09-16 | 西安长庆科技工程有限责任公司 | Oil-water interfaces stablize gas reducing liquid three-phase separating device |
| CN204877430U (en)* | 2015-08-14 | 2015-12-16 | 黄茂逢 | Integrated device is retrieved with natural gas to ground measurement |
| CN105247014A (en)* | 2013-03-15 | 2016-01-13 | 弗雷特等离子实验室公司 | Systems, methods and apparatus for processing mining by-products |
| CN204987651U (en)* | 2015-07-29 | 2016-01-20 | 中国石油天然气股份有限公司 | Noise-reduction explosion-proof liquefaction device for sleeve gas |
| WO2016113391A1 (en)* | 2015-01-16 | 2016-07-21 | Siemens Aktiengesellschaft | Multiphase fluid flow control system and method |
| CN107083938A (en)* | 2017-06-02 | 2017-08-22 | 四川瑞晟石油设备开发有限公司 | A kind of hydraulic cylinder type water drainage gas production device |
| CN210264639U (en)* | 2019-07-11 | 2020-04-07 | 河南柴油机重工有限责任公司 | A liquid drainage device for low-yield oil and gas wells containing liquid |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6644400B2 (en)* | 2001-10-11 | 2003-11-11 | Abi Technology, Inc. | Backwash oil and gas production |
| US10018027B2 (en)* | 2016-03-07 | 2018-07-10 | Nacelle Logistics Llc | Natural gas apparatus and method for in-situ processing |
- 2019
- 2019-07-11CNCN201910622444.1Apatent/CN110318711B/enactiveActive
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101182765A (en)* | 2007-12-12 | 2008-05-21 | 中国石油天然气集团公司 | Single well pressure boost gas production device |
| CN101265868A (en)* | 2008-03-20 | 2008-09-17 | 文立刚 | Method and device for utilizing flow separated from oil gas water separator for integral generation |
| CN103244824A (en)* | 2012-05-21 | 2013-08-14 | 中国石油天然气股份有限公司 | Pressurizing and heating oil-gas mixed transportation system and method |
| CN202832456U (en)* | 2012-07-26 | 2013-03-27 | 张振荣 | Pressure reduction and yield increase device for natural gas well mouth |
| CN105247014A (en)* | 2013-03-15 | 2016-01-13 | 弗雷特等离子实验室公司 | Systems, methods and apparatus for processing mining by-products |
| CN203394452U (en)* | 2013-06-27 | 2014-01-15 | 中国石油天然气股份有限公司 | Continuous auxiliary gas lift drainage gas production compression device |
| WO2016113391A1 (en)* | 2015-01-16 | 2016-07-21 | Siemens Aktiengesellschaft | Multiphase fluid flow control system and method |
| CN204646211U (en)* | 2015-05-20 | 2015-09-16 | 西安长庆科技工程有限责任公司 | Oil-water interfaces stablize gas reducing liquid three-phase separating device |
| CN204987651U (en)* | 2015-07-29 | 2016-01-20 | 中国石油天然气股份有限公司 | Noise-reduction explosion-proof liquefaction device for sleeve gas |
| CN204877430U (en)* | 2015-08-14 | 2015-12-16 | 黄茂逢 | Integrated device is retrieved with natural gas to ground measurement |
| CN107083938A (en)* | 2017-06-02 | 2017-08-22 | 四川瑞晟石油设备开发有限公司 | A kind of hydraulic cylinder type water drainage gas production device |
| CN210264639U (en)* | 2019-07-11 | 2020-04-07 | 河南柴油机重工有限责任公司 | A liquid drainage device for low-yield oil and gas wells containing liquid |
Non-Patent Citations (1)
| Title |
|---|
| 气井抽汲排液装置;周战军;吕军爱;李慧宇;李智永;张斌;户贵华;;油气田地面工程;第26卷(第11期);61-62* |
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