技术领域technical field
本发明涉及一种采油装置，特别是一种水平井阻水装置。The invention relates to an oil production device, in particular to a water blocking device for a horizontal well.
背景技术Background technique
水平井由于具有泄油面积大、波及系数高等特点，已被广泛用于底水油藏的开发，并在许多油田取得了一定的应用效果。但由于水平井采油过程中存在沿井筒内的压降，并且受沿水平井筒地层物性发生变化等因素的影响，这些因素容易造成底水锥进进而导致地层大量出水。当地层大量出水时，相应的井段几乎不会采出油，油井产液中也会含有大量的水，对水平井的正常生产带来严重影响。Due to the characteristics of large drainage area and high sweep coefficient, horizontal wells have been widely used in the development of bottom water reservoirs, and have achieved certain application effects in many oil fields. However, due to the pressure drop along the wellbore during the production process of the horizontal wellbore, and the influence of factors such as changes in the physical properties of the formation along the horizontal wellbore, these factors are likely to cause bottom water coning and lead to a large amount of water from the formation. When a large amount of water is produced from the formation, the corresponding well section will hardly produce oil, and the fluid produced in the oil well will also contain a large amount of water, which will seriously affect the normal production of the horizontal well.
在阻止地层出水的设备中，调流控水装置是整套水平井调流控水技术的核心工具。调流控水装置主要起到抑制高渗段产液，从而达到均衡采液控水的目的。但是，现有技术中的调流控水装置不但对水的流动有较大的阻力，对油的流动也有较大的阻力，因此阻水针对性不强。因此，急需要一种用于水平井的阻水针对性强的阻水装置。Among the equipment used to prevent formation water, the flow regulation and water control device is the core tool of the whole set of horizontal well flow regulation and water control technology. The flow regulation and water control device is mainly used to suppress the liquid production in the high-permeability section, so as to achieve the purpose of balanced liquid production and water control. However, the current regulation and water control device in the prior art not only has relatively large resistance to the flow of water, but also has relatively large resistance to the flow of oil, so the water blocking is not targeted. Therefore, there is an urgent need for a water-blocking device for horizontal wells with high water-blocking pertinence.
发明内容Contents of the invention
针对上述问题，本发明提出了一种水平井阻水装置。这种水平井阻水装置能够对水产生较高的阻力而对油的阻力很小，从而在不会影响油井的采油产量。In view of the above problems, the present invention proposes a horizontal well water blocking device. The horizontal well water blocking device can generate high resistance to water and little resistance to oil, so that the oil production of the oil well will not be affected.
根据本发明，提出了一种水平井阻水装置，包括：用于接收流体的油水分流器，和与油水分流器连通的盘状导流器，在导流器中心设置有流体出口，来自油水分流器的油在导流器内沿径向到达流体出口而流出，来自油水分流器的水在导流器内沿周向绕流到达流体出口而流出。According to the present invention, a horizontal well water blocking device is proposed, comprising: an oil-water diverter for receiving fluid, and a disk-shaped deflector communicated with the oil-water diverter, a fluid outlet is arranged at the center of the deflector, and the oil-water The oil in the diverter radially reaches the fluid outlet and flows out in the deflector, and the water from the oil-water diverter flows around in the deflector along the circumference to reach the fluid outlet and flows out.
根据本发明的水平井阻水装置，油的流动路径较短，从而受到的阻力也较小。水的流动路径较长，从而受到的阻力也较大，并且随着水周向绕流接近流体出口，水的流速也逐渐增加，流体出口对水的绕流流出的阻力迅速增加，从而进一步增加水的流动阻力。在油井正常采油期间，产液成分主要为油，这种产液受到的水平井阻水装置的阻力较小，不会影响油的产液量。在油井渗水时，产液成分主要为水并且会受到水平井阻水装置的很大的阻力，从而降低油井产液中的含水量。也就是说，根据本发明的水平井阻水装置的阻水针对性很强。According to the horizontal well water blocking device of the present invention, the flow path of the oil is relatively short, so the resistance it receives is relatively small. The water flow path is longer, so the resistance it receives is also greater, and as the water circumferentially flows close to the fluid outlet, the water flow rate gradually increases, and the resistance of the fluid outlet to the water flow out increases rapidly, thereby further increasing Water resistance to flow. During the normal oil production period of the oil well, the liquid production component is mainly oil, and the resistance of the water blocking device of the horizontal well to this production liquid is relatively small, and will not affect the liquid production rate of the oil. When the oil well seeps water, the liquid production component is mainly water and will be greatly resisted by the horizontal well water blocking device, thereby reducing the water content in the oil well production liquid. That is to say, the water blocking device of the horizontal well water blocking device according to the present invention is highly targeted.
在一个实施例中，油水分流器通过导水管和导油管与导流器相连通，其中导水管沿导流器的切向与导流器连通，导油管沿导流器的径向与导流器连通。导水管的设置方式使得，以一定速度从导水管中出来的水由于惯性作用必然会沿着导流器的周向流动并且绕流到达流体出口。同理，导油管的设置方式使得油会沿直径方向直接流到流体出口。由此，确保了水在流过水平井阻水装置时会经过较长的路径而阻力较大，油的流动路径较短而阻力较小。In one embodiment, the oil-water separator communicates with the deflector through a water guide pipe and an oil guide pipe, wherein the water guide pipe communicates with the deflector along the tangential direction of the deflector, and the oil guide pipe communicates with the deflector along the radial direction of the deflector. connected. The arrangement of the water guide pipe makes it possible for the water coming out of the water guide pipe at a certain speed to flow along the circumferential direction of the deflector due to the effect of inertia and to flow around to reach the fluid outlet. Likewise, the oil guide tube is arranged in such a way that the oil flows diametrically directly to the fluid outlet. Thus, it is ensured that when water flows through the water blocking device for the horizontal well, it will pass through a longer path with greater resistance, and the oil flow path will be shorter with less resistance.
在一个实施例中，油水分流器包括与外界的流体连通并且与导水管和导油管同向延伸的亲油管、亲水管和进液管，亲油管、亲水管、进液管三者的末端与导水管和导油管两者的起始端交汇于第一交汇点，进液管处于亲油管和亲水管之间，并且亲油管和导水管处于进液管的同侧，亲水管和导油管处于进液管的另一同侧。进液管的横截面积与亲油管的横截面积和亲水管的横截面积之比为(2.5～3.5)∶(2.5～3.5)∶(1～1.5)。亲油管和亲水管以与进液管垂直的方式与进液管相交，亲油管与导油管之间的夹角在105度到120度之间，亲水管与导水管之间的夹角在105度到120度之间。在这种结构中，进液管中的流量最大，并且亲油管中的油或亲水管中的水都会使主流管中的流体发生偏转而流到导油管中或导水管中。当油井产液的成分主要为油时，油井产液主要流入亲油管中。当油井产液的成分主要为水时，油井产液主要流入亲水管，并会驱使主流管中的水流入导水管中。由于水的流动路径较长，阻力较大，因此水的采出较慢，而油的流动路径较短，阻力较小，因此不影响油井正常采油，也就是本发明的水平井阻水装置能够自动阻水而不阻油。In one embodiment, the oil-water splitter includes an oil-loving pipe, a hydrophilic pipe, and a liquid inlet pipe that are in fluid communication with the outside and extend in the same direction as the water guide pipe and the oil guide pipe. The starting ends of the water guide pipe and the oil guide pipe meet at the first intersection point, the liquid inlet pipe is between the oil-friendly pipe and the water-friendly pipe, and the oil-friendly pipe and the water guide pipe are on the same side of the liquid inlet pipe, and the hydrophilic pipe and the oil guide pipe are at the liquid inlet the other side of the tube. The ratio of the cross-sectional area of the liquid inlet pipe to the cross-sectional area of the lipophilic pipe and the cross-sectional area of the hydrophilic pipe is (2.5-3.5): (2.5-3.5): (1-1.5). The oil-philic pipe and the hydrophilic pipe intersect the liquid inlet pipe in a manner perpendicular to the liquid inlet pipe. The angle between the oil-friendly pipe and the oil guide pipe is between 105 degrees and 120 degrees, and the angle between the hydrophilic pipe and the water guide pipe is 105 degrees. to 120 degrees. In this structure, the flow in the liquid inlet pipe is the largest, and the oil in the oil-wet pipe or the water in the water-wet pipe will deflect the fluid in the main pipe to flow into the oil guide pipe or the water guide pipe. When the composition of the oil well production fluid is mainly oil, the oil well production fluid mainly flows into the oil-friendly pipe. When the composition of the oil well production fluid is mainly water, the oil well production fluid mainly flows into the hydrophilic pipe, and will drive the water in the main pipe to flow into the aqueduct. Because the flow path of water is longer and the resistance is greater, the production of water is slower, while the flow path of oil is shorter and the resistance is smaller, so it does not affect the normal oil production of oil wells, that is, the horizontal well water blocking device of the present invention can Automatically block water but not oil.
在一个实施例中，进液管在第一交汇点处横截面缩小。这种结构的进液管使得流体以射流的方式从进液管中喷出，喷出的位置流体的流速较大但压力较低，从而会吸引亲油管中的油和/或亲水管中的水流向第一交汇点，即这种进液管起到推动流体的作用。In one embodiment, the inlet tube is reduced in cross-section at the first junction. The liquid inlet pipe of this structure makes the fluid spray out from the liquid inlet pipe in the form of a jet. The flow velocity of the fluid at the ejected position is relatively high but the pressure is low, which will attract the oil in the oil-friendly pipe and/or the oil in the hydrophilic pipe. The water flows to the first meeting point, that is, this liquid inlet pipe plays the role of pushing the fluid.
在一个实施例中，在亲油管上设置有多个横截面缩小的区域。这种结构的亲油管能够增强对含水量较高的液体的阻挡作用。In one embodiment, a plurality of regions of reduced cross-section are provided on the oleophilic tube. Oleophilic tubes of this structure can enhance the barrier effect on liquids with high water content.
在一个实施例中，导水管和导油管朝向彼此而延伸并交叉于第二交汇点，导水管的处于第一交汇点和第二交汇点之间的部分为导水管上游段，导水管的处于第二交汇点和导流器之间的部分为导水管下游段，导油管的处于第一交汇点和第二交汇点之间的部分为导油管上游段，导油管的处于第二交汇点和导流器之间的部分为导油管下游段，油水分流器还包括与外界的流体直接连通的主流管，主流管终止于第二交汇点并且与导水管和导油管连通，主流管处于导水管上游段和导油管上游段之间，并且导水管上游段和导油管下游段处于主流管的同侧，导油管上游段和导水管下游段处于主流管的另一同侧。导油管上游段和导水管上游段以与主流管垂直的方式与主流管相交，导油管上游段与导油管下游段之间的夹角在105度到120度之间，导水管上游段与导水管下游段之间的夹角在105度到120度之间。主流管的横截面积与导油管上游段的横截面积和导水管上游段的横截面积之比为(2～3)∶(1～1.5)∶(1～1.5)。在这种结构中，导油管上游段中的油或导水管上游段中的水都会使主流管中的流体发生偏转而流到导油管下游段中或导水管下游段中。当油井产液的成分主要为油时，油井产液主要流入导油管上游段，并会驱使主流管中的油流入导油管下游段中。当油井产液的成分主要为水时，油井产液主要流入导水管上游段，并会驱使主流管中的水流入导水管下游段中。由于水的流动路径较长，阻力较大，因此水的采出较慢，而油的流动路径较短，阻力较小，因此不影响油井正常采油，也就是本发明的水平井阻水装置能够自动阻水而不阻油。此外，由于主流管的横截面积很大，因此不会影响油井的正常采油产量。In one embodiment, the water guide pipe and the oil guide pipe extend towards each other and intersect at the second intersection point, the part of the water guide pipe between the first intersection point and the second intersection point is the upstream section of the water guide pipe, and the part of the water guide pipe is at The part between the second meeting point and the deflector is the downstream section of the water guide pipe, the part of the oil guide pipe between the first meeting point and the second meeting point is the upstream section of the oil guide pipe, and the part of the oil guide pipe is between the second meeting point and the second meeting point. The part between the deflectors is the downstream section of the oil guide pipe. The oil-water splitter also includes a main flow pipe directly connected to the external fluid. The main flow pipe terminates at the second intersection point and communicates with the water guide pipe and the oil guide pipe. Between the upstream section and the upstream section of the oil guide pipe, and the upstream section of the water guide pipe and the downstream section of the oil guide pipe are on the same side of the main flow pipe, and the upstream section of the oil guide pipe and the downstream section of the water guide pipe are on the other same side of the main flow pipe. The upstream section of the oil guide pipe and the upstream section of the water guide pipe intersect the main flow pipe in a manner perpendicular to the main flow pipe. The angle between the upstream section of the oil guide pipe and the downstream section of the oil guide pipe is between 105 degrees and 120 degrees. The angle between the downstream sections of the water pipes is between 105° and 120°. The ratio of the cross-sectional area of the main flow pipe to the cross-sectional area of the upstream section of the oil guide pipe and the cross-sectional area of the upstream section of the water guide pipe is (2-3):(1-1.5):(1-1.5). In this structure, the oil in the upstream section of the oil guide pipe or the water in the upstream section of the water guide pipe will deflect the fluid in the main flow pipe to flow into the downstream section of the oil guide pipe or the downstream section of the water guide pipe. When the composition of the oil well production fluid is mainly oil, the oil well production fluid mainly flows into the upstream section of the oil guide pipe, and will drive the oil in the main flow pipe to flow into the downstream section of the oil guide pipe. When the oil well production fluid is mainly composed of water, the oil well production fluid mainly flows into the upstream section of the aqueduct, and will drive the water in the main flow pipe to flow into the downstream section of the aqueduct. Because the flow path of water is longer and the resistance is greater, the production of water is slower, while the flow path of oil is shorter and the resistance is smaller, so it does not affect the normal oil production of oil wells, that is, the horizontal well water blocking device of the present invention can Automatically block water but not oil. In addition, due to the large cross-sectional area of the main flow pipe, it will not affect the normal oil production of the oil well.
在一个实施例中，主流管内不设置流体流动阻挡结构。这种主流管具有最大的流量，使得本发明的水平井阻水装置不会使油井的产油量下降。In one embodiment, no fluid flow blocking structure is arranged in the main flow pipe. The main flow pipe has the maximum flow rate, so that the horizontal well water blocking device of the present invention will not reduce the oil production of the oil well.
应注意地是，在本申请中，用语“水”并不是纯水，而是可以为含水量较大的油；而用语“油”中也可以为含有少量的水。It should be noted that in the present application, the term "water" is not pure water, but oil with relatively large water content; and the term "oil" may also contain a small amount of water.
与现有技术相比，本发明的优点在于：(1)在本发明的水平井阻水装置中，油的流动路径较短，从而受到的阻力也较小；水的流动路径较长，从而受到的阻力也较大，因此这种水平井阻水装置的阻水针对性很强。(2)水平井阻水装置包括亲油管、亲水管、进液管、导油管和导水管，并且通过优化设置这些管路，实现了水平井阻水装置能够自动阻水而不阻油。(3)水平井阻水装置还包括主流管。在主流管内不设置流动阻挡结构，使得本发明的水平井阻水装置不会使油井的产油量下降。Compared with the prior art, the present invention has the following advantages: (1) in the horizontal well water blocking device of the present invention, the flow path of oil is shorter, thus the resistance received is also small; the flow path of water is longer, thus The resistance received is also relatively large, so the water blocking of this horizontal well water blocking device is highly targeted. (2) The horizontal well water blocking device includes oil-friendly pipes, hydrophilic pipes, liquid inlet pipes, oil guide pipes and water guide pipes, and by optimizing the setting of these pipes, the horizontal well water blocking device can automatically block water without blocking oil. (3) The horizontal well water blocking device also includes a main flow pipe. No flow blocking structure is arranged in the main flow pipe, so that the horizontal well water blocking device of the present invention will not reduce the oil production of the oil well.
附图说明Description of drawings
在下文中将基于实施例并参考附图来对本发明进行更详细的描述。其中：Hereinafter, the present invention will be described in more detail based on the embodiments with reference to the accompanying drawings. in:
图1示意性地显示了根据本发明的水平井阻水装置原理图；Fig. 1 shows schematically the schematic diagram of the horizontal well water blocking device according to the present invention;
图2示意性地显示了根据本发明的水平井阻水装置的第一实施例的结构图；Fig. 2 schematically shows the structural diagram of the first embodiment of the horizontal well water blocking device according to the present invention;
图3是根据本发明的亲水管的结构示意图；Fig. 3 is a schematic structural view of a hydrophilic tube according to the present invention;
图4是图2中的I部分的放大视图；Fig. 4 is the enlarged view of part I in Fig. 2;
图5示意性地显示了根据本发明的水平井阻水装置的第二实施例的结构图。Fig. 5 schematically shows the structure diagram of the second embodiment of the horizontal well water blocking device according to the present invention.
在附图中，相同的部件使用相同的附图标记。附图并未按照实际的比例。In the figures, the same parts are given the same reference numerals. The drawings are not to scale.
具体实施方式Detailed ways
下面将结合附图对本发明作进一步说明。The present invention will be further described below in conjunction with accompanying drawing.
图1显示了水平井阻水装置10(以下称之为装置10)原理图。如图1所示，装置10包括油水分流器20和盘状导流器11。油水分流器20通过入口12与外界流体相连通，油水分流器20与导流器11通过导水管13和导油管14相连通。在导流器11的中心设置有流体出口15，以使得流入到导流器11的流体离开装置10。FIG. 1 shows a schematic diagram of a water blocking device 10 for a horizontal well (hereinafter referred to as the device 10 ). As shown in FIG. 1 , the device 10 includes an oil-water separator 20 and a disc deflector 11 . The oil-water separator 20 communicates with the outside fluid through the inlet 12 , and the oil-water separator 20 communicates with the deflector 11 through the water guide pipe 13 and the oil guide pipe 14 . A fluid outlet 15 is provided in the center of the flow guide 11 to allow fluid flowing into the flow guide 11 to leave the device 10 .
为了使得装置10对水产生大的阻力，即阻水针对性强，将导水管13沿导流器11的切向与导流器11连通，而将导油管14沿导流器11的径向与导流器11连通，如图1所示。这种结构充分的利用了流体沿圆盘切向和直径流动的原理：使得沿切向流入圆盘的流体周向绕流到圆盘中心，从而其流动路程较长，摩阻较大；而沿直径流入圆盘的流体会直接流入到圆盘中心，从而其流动路程较短摩阻较小。发明人研究发现，沿切向流入导流器11的水的流动摩阻是沿径向流入导流器11的油的流动摩阻的几倍至几十倍，这取决于油和水的成分以及导流器11自身摩擦系数。此外，随着水周向绕流接近流体出口15，水的流速也逐渐增加，流体出口15对水的绕流流出的阻力迅速增加，从而进一步增加水的流动阻力。而油沿径向运动，流体出口15对油的流出阻力很小。在一个实施例中，流体出口15的直径与导水管13的直径和导油管14的直径之比为(2～3)∶(5～7)∶(5～7)。这种尺寸的流体出口15、导水管13和导油管14使得水的流出阻力较大，而油的流出阻力很小。因此，图1所示的装置10能够自动区分油和水，实现过油高摩阻而过水低摩阻，从而装置10能够阻水而不阻油。In order to make the device 10 have a large resistance to water, that is, the water resistance is highly targeted, the water guide pipe 13 is communicated with the deflector 11 along the tangential direction of the deflector 11, and the oil guide pipe 14 is connected along the radial direction of the deflector 11. It communicates with the deflector 11, as shown in FIG. 1 . This structure makes full use of the principle that the fluid flows along the tangential and diameter of the disc: the fluid that flows into the disc along the tangential direction flows around the center of the disc in the circumferential direction, so that its flow path is longer and the frictional resistance is larger; Fluid that flows into the disc along its diameter flows directly into the center of the disc, resulting in a shorter flow path with less friction. The inventors found that the flow friction of water flowing into the deflector 11 along the tangential direction is several to several tens of times that of the oil flowing into the deflector 11 along the radial direction, depending on the composition of oil and water And deflector 11 own friction coefficient. In addition, as the circumferential flow of water approaches the fluid outlet 15, the flow velocity of the water gradually increases, and the resistance of the fluid outlet 15 to the water flowing out increases rapidly, thereby further increasing the flow resistance of the water. While the oil moves in the radial direction, the flow resistance of the fluid outlet 15 to the oil is very small. In one embodiment, the ratio of the diameter of the fluid outlet 15 to the diameter of the water guide pipe 13 and the diameter of the oil guide pipe 14 is (2-3):(5-7):(5-7). The size of the fluid outlet 15, the water guide pipe 13 and the oil guide pipe 14 makes the flow resistance of water relatively large, while the flow resistance of oil is very small. Therefore, the device 10 shown in FIG. 1 can automatically distinguish between oil and water, and achieve high friction through oil and low friction through water, so that the device 10 can block water but not oil.
图2显示了装置10的第一实施例的结构示意图。这种结构的装置10能够自动并快速区分油和水，从而提高了装置10的阻水针对性。如图2所示，装置10的油水分流器20包括与外界的流体连通的亲油管21、亲水管22和进液管23，其中亲油管21亲油而阻水，亲水管22亲水而阻油，进液管23对油和水均不产生阻挡作用。进液管23处于亲油管21和亲水管22之间并且亲油管21、亲水管22和进液管23与导水管13和导油管14同向延伸。应注意地是，这里所述的“同向延伸”并不能按照数学意义上的同向来理解，而是理解为亲油管21、亲水管22、进液管23、导水管13和导油管14中的流体方向均大体朝向导流器11的方向。亲油管21、亲水管22、进液管23三者的末端与导水管13和导油管14两者的起始端交汇于第一交汇点24，并且亲油管21和导水管13处于进液管23的同侧，亲水管22和导油管14处于进液管23的另一同侧。若将亲油管21和导油管14整体看做一个导油件，并将亲水管22和导水管13整体看做一个导水件，则导油件和导水件为交叉布置。这样，当油井产液(即外界的流体)主要为油时，油井产液会主要流入亲油管21和进液管23中。在第一交汇点24处，在亲油管21内的油流推动下，进液管23中的油流会发生偏转而流入导油管14中。当油井产液(即外界流体)主要为水时，油井产液会主要流入亲水管22和进液管23中。在第一交汇点24处，在亲水管22内的水流推动下，进液管23中的水流会发生偏转而流入导水管13中。当油井产液中油的含量大于水的含量时，亲油管21中的流体流量就会大于亲水管22中的流体流量，必然会推动进液管23中的流体会发生偏转而流入导油管14中，而阻挡亲水管22中的流体，从而实现装置10自动阻水的目的。FIG. 2 shows a schematic structural view of a first embodiment of the device 10 . The device 10 with this structure can automatically and quickly distinguish oil and water, thereby improving the water blocking pertinence of the device 10 . As shown in Figure 2, the oil-water separator 20 of the device 10 includes an oil-loving tube 21, a hydrophilic tube 22, and a liquid inlet tube 23 that communicate with the external fluid, wherein the lipophilic tube 21 is lipophilic and blocks water, and the hydrophilic tube 22 is hydrophilic and blocks water. Oil, the liquid inlet pipe 23 does not produce blocking effect to oil and water. The liquid inlet pipe 23 is located between the lipophilic pipe 21 and the hydrophilic pipe 22 and the lipophilic pipe 21 , the hydrophilic pipe 22 and the liquid inlet pipe 23 extend in the same direction as the water guide pipe 13 and the oil guide pipe 14 . It should be noted that the "extending in the same direction" mentioned here cannot be understood in the same direction in the mathematical sense, but is understood as the oil-friendly pipe 21, the hydrophilic pipe 22, the liquid inlet pipe 23, the water guide pipe 13 and the oil guide pipe 14. The direction of the flow is generally towards the direction of the deflector 11. The ends of the lipophilic pipe 21, the hydrophilic pipe 22, and the liquid inlet pipe 23 and the starting ends of the water pipe 13 and the oil pipe 14 meet at the first meeting point 24, and the lipophilic pipe 21 and the water pipe 13 are in the liquid inlet pipe 23 On the same side of the liquid inlet pipe 23, the hydrophilic pipe 22 and the oil guide pipe 14 are on the other same side of the liquid inlet pipe 23. If the oil-friendly pipe 21 and the oil-guiding pipe 14 are regarded as an oil-guiding piece as a whole, and the hydrophilic pipe 22 and the water-guiding pipe 13 are regarded as a water-guiding piece as a whole, then the oil-guiding piece and the water-guiding piece are intersected. In this way, when the production fluid of the oil well (that is, the external fluid) is mainly oil, the production fluid of the oil well will mainly flow into the oil-friendly pipe 21 and the liquid inlet pipe 23 . At the first meeting point 24 , driven by the oil flow in the oleophilic pipe 21 , the oil flow in the liquid inlet pipe 23 will be deflected and flow into the oil guide pipe 14 . When the oil well production fluid (that is, the external fluid) is mainly water, the oil well production fluid will mainly flow into the hydrophilic pipe 22 and the liquid inlet pipe 23 . At the first meeting point 24 , driven by the water flow in the hydrophilic pipe 22 , the water flow in the liquid inlet pipe 23 will deflect and flow into the aqueduct 13 . When the oil content in the oil well production fluid is greater than the water content, the fluid flow in the oil-friendly pipe 21 will be greater than the fluid flow in the hydrophilic pipe 22, which will inevitably push the fluid in the liquid inlet pipe 23 to deflect and flow into the oil guide pipe 14 , and block the fluid in the hydrophilic tube 22, thereby achieving the purpose of the device 10 automatically blocking water.
为了保证进液管23内的流体能顺利地偏转到导水管13中或导油管14中，将亲油管21和亲水管22以与进液管23垂直的方式与进液管23相交，并且亲油管21与导油管14之间的夹角在105度到120度之间，亲水管22与导水管13之间的夹角在105度到120度之间；进液管23的横截面积与亲油管21的横截面积和亲水管22的横截面积之比为(2.5～3.5)∶(2.5～3.5)∶(1～1.5)。这样，能进一步提高装置10对油中含水量的自动识别精度，并且自动使含水量更多的油在导水管13中流动。在一个实施例中，当流过装置10的油含水量(以重量计)在35～45％以下时，这种流体会经导水管13流到导流器11中。In order to ensure that the fluid in the liquid inlet pipe 23 can be smoothly deflected into the water guide pipe 13 or the oil guide pipe 14, the oil-friendly pipe 21 and the hydrophilic pipe 22 intersect with the liquid inlet pipe 23 in a manner perpendicular to the liquid inlet pipe 23, and the oil-friendly pipe The angle between 21 and the oil guide pipe 14 is between 105 degrees and 120 degrees, and the angle between the hydrophilic pipe 22 and the water guide pipe 13 is between 105 degrees and 120 degrees; The ratio of the cross-sectional area of the oil pipe 21 to the cross-sectional area of the hydrophilic pipe 22 is (2.5-3.5): (2.5-3.5): (1-1.5). In this way, the automatic identification accuracy of the water content in the oil by the device 10 can be further improved, and the oil with more water content can be automatically made to flow in the water guide pipe 13 . In one embodiment, when the water content (by weight) of the oil flowing through the device 10 is below 35-45%, this fluid will flow into the deflector 11 through the water conduit 13 .
为了提高亲油管21的阻水效果，即当进入装置10的流体的含水率升高时，亲油管21的流量要降低，则亲油管21由亲油材料制成，并且在亲油管21上设置有多个横截面缩小的区域(如图3所示)，这种亲油管21具有良好的输水效果。在一个实施例中，亲油管21上的横截面缩小的区域的直径D2与亲油管21主体的直径D1之比为(5～7)∶(2～3)。In order to improve the water-blocking effect of the lipophilic pipe 21, that is, when the water content of the fluid entering the device 10 increases, the flow rate of the lipophilic pipe 21 will decrease, so the lipophilic pipe 21 is made of lipophilic material, and is arranged on the lipophilic pipe 21. There are multiple regions with reduced cross-sections (as shown in FIG. 3 ), and this kind of lipophilic tube 21 has a good water transport effect. In one embodiment, the ratio of the diameter D2 of the area with reduced cross section on the lipophilic tube 21 to the diameter D1 of the main body of the lipophilic tube 21 is (5-7):(2-3).
还如图4所示，进液管23在第一交汇点24处横截面缩小。这样，进液管23与下游的导油管14和导水管13一起形成了文丘里管，并且第一交汇点24区域形成文丘里管的喉部。根据文丘里效应，在第一交汇点24处(即文丘里管的喉部)的压力低于亲油管21内的压力和亲水管22内的压力，这种压差会促使亲油管21内的油或亲水管22内的水流向第一交汇点24区域，并且因此促进装置10内流体的流动。实际上，这种进液管23还起到了促进装置10内流体流动的作用。As also shown in FIG. 4 , the inlet pipe 23 narrows in cross-section at the first junction 24 . In this way, the liquid inlet pipe 23 together with the downstream oil guide pipe 14 and water guide pipe 13 form a Venturi pipe, and the region of the first junction 24 forms the throat of the Venturi pipe. According to the Venturi effect, the pressure at the first meeting point 24 (i.e. the throat of the Venturi tube) is lower than the pressure in the lipophilic tube 21 and the pressure in the hydrophilic tube 22, and this pressure difference will promote the oil in the lipophilic tube 21. Or water within the hydrophilic tube 22 flows towards the region of the first junction 24 and thus facilitates the flow of fluid within the device 10 . In fact, this liquid inlet tube 23 also plays a role in promoting fluid flow in the device 10 .
图5显示了装置的第二实施例(即装置10’)。这种结构的装置10’与图2所示的装置10的大体结构相同，区别仅在于导水管13和导油管14的设置方式，并且还增加了与外界流体直接连通的主流管51。下面将对这些区别进行详细描述。Figure 5 shows a second embodiment of the device (i.e. device 10'). The general structure of the device 10' of this structure is the same as that of the device 10 shown in Fig. 2, the difference is only in the arrangement of the water guide pipe 13 and the oil guide pipe 14, and also increases the main flow pipe 51 directly connected with the external fluid. These differences are described in detail below.
如图5所示，导水管13和导油管14从第一交汇点24处开始延伸，并且在与导流器11相交之前而彼此交叉于第二交汇点52。这里，将导水管13的处于第一交汇点24和第二交汇点52之间的部分为导水管上游段53；导水管13的处于第二交汇点52和导流器11之间的部分为导水管下游段54；导油管14的处于第一交汇点24和第二交汇点52之间的部分为导油管上游段55；导油管14的处于第二交汇点52和导流器11之间的部分为导油管下游段56。主流管51终止于第二交汇点52处并且与导水管13和导油管14连通。主流管51处于导水管上游段53和导油管上游段55之间，并且导水管上游段53和导油管下游段56处于主流管51的同侧，导油管上游段55和导水管下游段54处于主流管51的另一同侧。如与亲油管21、亲水管22和进液管23的工作原理类似，导水管上游段53的流体或导油管上游段55内的流体均能将主流管51内的流体引导到导水管下游段54中或导油管下游段56中。As shown in FIG. 5 , the water guide pipe 13 and the oil guide pipe 14 extend from the first junction 24 and cross each other at a second junction 52 before intersecting the deflector 11 . Here, the part between the first confluence point 24 and the second confluence point 52 of the aqueduct 13 is the upstream section 53 of the aqueduct 13; the part between the second confluence point 52 and the deflector 11 of the aqueduct 13 is The downstream section 54 of the water guide pipe; the part of the oil guide pipe 14 between the first meeting point 24 and the second meeting point 52 is the upstream section 55 of the oil guide pipe; the part of the oil guide pipe 14 between the second meeting point 52 and the deflector 11 The part of is the downstream section 56 of the oil guide pipe. The main flow pipe 51 terminates at a second junction 52 and communicates with the water conduit 13 and the oil conduit 14 . The main flow pipe 51 is between the upstream section 53 of the water guide pipe and the upstream section 55 of the oil guide pipe, and the upstream section 53 of the water guide pipe and the downstream section 56 of the oil guide pipe are on the same side of the main flow pipe 51, and the upstream section 55 of the oil guide pipe and the downstream section 54 of the oil guide pipe are in the The other same side of the main flow pipe 51. Similar to the working principle of the oil-friendly pipe 21, the hydrophilic pipe 22 and the liquid inlet pipe 23, the fluid in the upstream section 53 of the aqueduct or the fluid in the upstream section 55 of the oil-conducting pipe can guide the fluid in the main flow pipe 51 to the downstream section of the aqueduct 54 or in the downstream section 56 of the oil guide pipe.
为了保证主流管51内的流体能顺利偏转到导水管下游段54中或导油管下游段56中，将导油管上游段55和导水管上游段53以与主流管51垂直的方式与主流管相交，并且导油管上游段55与导油管下游段56之间的夹角在105度到120度之间，导水管上游段53与导水管下游段54之间的夹角在105度到120度之间；主流管51的横截面积与导油管上游段55的横截面积和导水管上游段53的横截面积之比为(2～3)∶(1～1.5)∶(1～1.5)。由于主流管51的横截面积大于亲油管21、亲水管22、进液管23导水管13和导油管14的横截面积，并且在主流管51内没有设置流动阻挡结构，这会进一步降低装置10对油井采油效率的影响，保证油井的采油产量。In order to ensure that the fluid in the main pipe 51 can be smoothly deflected into the downstream section 54 of the water guide pipe or the downstream section 56 of the oil guide pipe, the upstream section 55 of the oil guide pipe and the upstream section 53 of the water guide pipe intersect the main flow pipe in a manner perpendicular to the main flow pipe 51 , and the angle between the upstream section 55 of the oil guide pipe and the downstream section 56 of the oil guide pipe is between 105 degrees and 120 degrees, and the angle between the upstream section 53 of the water guide pipe and the downstream section 54 of the water guide pipe is between 105 degrees and 120 degrees Between; the ratio of the cross-sectional area of the main flow pipe 51 to the cross-sectional area of the upstream section of the oil guide pipe 55 and the cross-sectional area of the upstream section of the water guide pipe 53 is (2～3):(1～1.5):(1～1.5). Because the cross-sectional area of the main flow pipe 51 is greater than the cross-sectional area of the lipophilic pipe 21, the hydrophilic pipe 22, the liquid inlet pipe 23, the water guide pipe 13, and the oil guide pipe 14, and there is no flow blocking structure in the main flow pipe 51, this will further reduce the capacity of the device. 10 The impact on the oil recovery efficiency of the oil well to ensure the oil recovery output of the oil well.
应注意地是，虽然图5中显示了导流器11、导油管下游段56和导水管下游段54均处于导水管下游段54和导油管上游段55围成的区域内，但是实际上导流器11、导油管下游段56和导水管下游段54也可都处于导水管下游段54和导油管上游段55围成的区域之外。It should be noted that although it is shown in FIG. 5 that the deflector 11, the downstream section of the oil guide pipe 56 and the downstream section of the water guide pipe 54 are all in the area enclosed by the downstream section of the water guide pipe 54 and the upstream section of the oil guide pipe 55, in fact the guide The flow device 11, the downstream section 56 of the oil guide pipe and the downstream section 54 of the water guide pipe may all be outside the area enclosed by the downstream section 54 of the water guide pipe and the upstream section 55 of the oil guide pipe.
虽然已经参考优选实施例对本发明进行了描述，但在不脱离本发明的范围的情况下，可以对其进行各种改进并且可以用等效物替换其中的部件。尤其是，只要不存在结构冲突，各个实施例中所提到的各项技术特征均可以任意方式组合起来。本发明并不局限于文中公开的特定实施例，而是包括落入权利要求的范围内的所有技术方案。While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for parts thereof without departing from the scope of the invention. In particular, as long as there is no structural conflict, the technical features mentioned in the various embodiments can be combined in any manner. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410212564.1ACN105089695A (en) | 2014-05-20 | 2014-05-20 | Waterstop device for horizontal well |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410212564.1ACN105089695A (en) | 2014-05-20 | 2014-05-20 | Waterstop device for horizontal well |
| Publication Number | Publication Date |
|---|---|
| CN105089695Atrue CN105089695A (en) | 2015-11-25 |
| Application Number | Title | Priority Date | Filing Date |
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| CN201410212564.1APendingCN105089695A (en) | 2014-05-20 | 2014-05-20 | Waterstop device for horizontal well |
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| CN (1) | CN105089695A (en) |
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| CN102753784A (en)* | 2010-02-04 | 2012-10-24 | 哈利伯顿能源服务公司 | Method and apparatus for autonomous downhole fluid selection with pathway dependent resistance system |
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| CN103806881A (en)* | 2014-02-19 | 2014-05-21 | 东北石油大学 | Branched flow channel type self-adaptation inflow control device |
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| RJ01 | Rejection of invention patent application after publication | Application publication date:20151125 |