技术领域technical field
本发明涉及页岩气水平井工程技术领域，更具体地说，涉及一种页岩气水平井高压泵送桥塞装置。The invention relates to the technical field of shale gas horizontal well engineering, in particular to a high-pressure pumping bridge plug device for shale gas horizontal wells.
背景技术Background technique
目前，天然气资源在大规模的工业开发中越来越难以满足需求，页岩气作为一种非常规天然气已成为重要的补充。页岩气井取得工业产能的关键是采用水平井，但是由于页岩气井主要采用水平井套管射孔完井，水平段大于1000m，因此，必须采用分段射孔压裂。页岩气水平井一般采用电缆传输、水力泵送复合材料桥塞并配合射孔联作技术，就可以实现在不使用钻机和修井机的情况下，来完成水平井的分段压裂施工，是实现页岩气水平井储层改造的关键技术。该技术既大大提高作业效率，又降低了作业成本。At present, natural gas resources are increasingly difficult to meet demand in large-scale industrial development, and shale gas, as a kind of unconventional natural gas, has become an important supplement. The key to obtaining industrial production capacity of shale gas wells is to use horizontal wells, but since shale gas wells are mainly completed by casing perforation in horizontal wells, and the horizontal section is greater than 1000m, staged perforation fracturing must be used. Shale gas horizontal wells generally use cable transmission, hydraulic pumping composite bridge plugs and combined perforation technology to realize staged fracturing of horizontal wells without using drilling rigs and workover rigs , is the key technology to realize shale gas horizontal well reservoir stimulation. This technology not only greatly improves the operation efficiency, but also reduces the operation cost.
现有的页岩气水平井高压泵送桥塞的设备(供液混砂车、低压管汇、高压管汇、入井管路)及流程均采用主压设备和流程，其在使用的过程中存在以下问题：(1)页岩气水平井使用的滑溜水压裂液携砂能力弱，高、低管汇结构复杂、变径结构多、摩阻损耗大，导致高、低压流程中存在上一段施工过程中残留的支撑剂，残留的支撑剂会导致后期电缆在起出过程中发生受卡遇阻事故；(2)顶替过程中顶替液含有大量支撑剂，而且顶替过程采用的是非过顶替工艺，导致井筒液中出现积砂，发生井下工具串遇阻遇卡、泵脱，桥塞中途座封等生产事故；(3)井口压力大，一般分段压裂后，井口始终带压，一般高于25MPa，由于没有井口压力平衡系统，造成井口流程控制高压元件无法正常开启；(4)泵送桥塞流程需要借助主压区的高、低压管汇流程来进行，泵送期间无法对压裂泵车进行设备整改；(5)泵送结束后，电缆在起出井底的过程中，压裂泵车处于长时间停、等状态，造成不必要的非生产时效；(6)无法满足井工厂压裂多井间交叉压裂同步施工的需要。The existing equipment and processes for high-pressure pumping bridge plugs in horizontal shale gas wells (liquid-supply mixing truck, low-pressure manifold, high-pressure manifold, and well-entry pipeline) all adopt main pressure equipment and processes. The following problems exist: (1) The slick water fracturing fluid used in shale gas horizontal wells has weak sand-carrying capacity, complex high and low manifold structures, many variable diameter structures, and large friction loss, resulting in upper and lower pressures in the high and low pressure processes. Residual proppant during a stage of construction, the residual proppant will cause the cable to be jammed and blocked during the later stage; (2) The displacement fluid contains a large amount of proppant during the displacement process, and the displacement process adopts non-over displacement process, resulting in sand accumulation in the wellbore fluid, production accidents such as downhole tool string getting stuck, pumping off, and bridge plug midway sealing; (3) The wellhead pressure is high, generally after staged fracturing, the wellhead is always under pressure, Generally higher than 25MPa, because there is no wellhead pressure balance system, the wellhead process control high-pressure components cannot be opened normally; (4) The pumping bridge plug process needs to be carried out with the help of the high and low pressure manifold processes in the main pressure zone, and cannot be controlled during pumping The fracturing pump truck is undergoing equipment rectification; (5) After the pumping is completed, the fracturing pump truck is in the state of stopping and waiting for a long time while the cable is being pulled out of the bottom of the well, resulting in unnecessary non-production time limit; (6) It cannot meet The need for synchronous construction of cross fracturing between multiple wells in the well factory.
发明内容Contents of the invention
本发明要解决的技术问题在于，针对现有技术的缺陷，提供一种页岩气水平井高压泵送桥塞装置，其通过独立的泵送系统，可以实现与主压裂分开进行，实现了模块化的施工方案。The technical problem to be solved by the present invention is to provide a high-pressure pumping bridge plug device for shale gas horizontal wells in view of the defects of the prior art, which can be separated from the main fracturing through an independent pumping system, realizing Modular construction scheme.
本发明解决其技术问题所采用的技术方案是：构造一种页岩气水平井高压泵送桥塞装置。The technical solution adopted by the present invention to solve the technical problem is to construct a high-pressure pumping bridge plug device for shale gas horizontal wells.
在本发明所述的页岩气水平井高压泵送桥塞装置中，包括井筒、井口机构、井口桥塞封装机构、桥塞泵送机构以及压裂液泵送机构，所述井口机构和所述井口桥塞封装机构均连接在所述井筒上，所述桥塞泵送机构和所述压裂液泵送机构均管路连接所述井筒。In the shale gas horizontal well high-pressure pumping bridge plug device according to the present invention, it includes a wellbore, a wellhead mechanism, a wellhead bridge plug packaging mechanism, a bridge plug pumping mechanism and a fracturing fluid pumping mechanism, the wellhead mechanism and the The wellhead bridge plug packaging mechanism is connected to the wellbore, and the bridge plug pumping mechanism and the fracturing fluid pumping mechanism are both connected to the wellbore by pipelines.
在本发明所述的页岩气水平井高压泵送桥塞装置中，所述井口机构包括依次连接的井口上法兰、第一井口闸门、第二井口闸门、压裂头以及第三井口闸门，并且所述井口上法兰连接所述井筒。In the high-pressure pumping bridge plug device for shale gas horizontal wells according to the present invention, the wellhead mechanism includes a wellhead upper flange, a first wellhead gate, a second wellhead gate, a fracturing head and a third wellhead connected in sequence gate, and the upper flange of the wellhead is connected to the wellbore.
在本发明所述的页岩气水平井高压泵送桥塞装置中，所述井口桥头塞封装机构包括依次连接的桥塞注脂密封件、桥塞防喷管总成以及井口防喷器，并且所述井口防喷器连接所述第三井口闸门。In the high-pressure pumping bridge plug device for shale gas horizontal wells according to the present invention, the wellhead bridgehead plug packaging mechanism includes a bridge plug grease injection seal, a bridge plug blowout preventer assembly and a wellhead blowout preventer connected in sequence, And the wellhead blowout preventer is connected to the third wellhead gate.
在本发明所述的页岩气水平井高压泵送桥塞装置中，所述桥塞泵送机构包括压裂液罐组、供液泵和泵送桥塞压裂泵组，所述压裂液罐组通过供液泵上水软管连接所述供液泵；所述供液泵通过压裂泵上水软管连通所述泵送桥塞压裂泵组，所述泵送桥塞压裂泵组通过是泵送桥塞入井管路连接所述压裂头，并且在泵送桥塞入井管路上沿着靠近所述压裂头的方向依次设置有第一旋塞阀和第一单流阀。In the high-pressure pumping bridge plug device for shale gas horizontal wells according to the present invention, the bridge plug pumping mechanism includes a fracturing fluid tank set, a liquid supply pump and a pumping bridge plug fracturing pump set, and the fracturing The liquid tank group is connected to the liquid supply pump through the water supply hose of the liquid supply pump; the liquid supply pump is connected to the pumping bridge plug fracturing pump group through the fracturing pump water supply hose, and the pumping bridge plug pressure The pump group is connected to the fracturing head through the pumping bridge plugged into the well pipeline, and the first plug valve and the first single-flow valve are sequentially arranged on the pumping bridge plugged into the well pipeline along the direction close to the fracturing head. valve.
在本发明所述的页岩气水平井高压泵送桥塞装置中，所述压裂液泵送机构包括压裂主区泵组和泄压组件，所述压裂头通过主压区入井高压管路连接第一T型三通的第一连接端，所述第一T型三通的第二连接端通过泄压流程高压连接管路连接所述排污组件，所述第一T型三通的第三连接端通过主压区排出高压管路连接所述压裂主区泵组，并且所述主压区排出高压管路上靠近所述压裂主区泵组的方向依次设置有第二单流阀和第二旋塞阀；并且所述泄压组件包括依次连接的第三旋塞阀、第四旋塞阀、降压管汇放喷旋塞阀、放喷管线以及排污池，并且所述第三旋塞阀连接所述泄压流程高压连接管路。In the high-pressure pumping bridge plug device for shale gas horizontal wells according to the present invention, the fracturing fluid pumping mechanism includes a fracturing main zone pump set and a pressure relief assembly, and the fracturing head enters the well under high pressure through the main pressure zone. The pipeline is connected to the first connecting end of the first T-shaped tee, and the second connecting end of the first T-shaped tee is connected to the sewage discharge assembly through a pressure relief process high-pressure connection pipeline, and the first T-shaped tee The third connection end of the main pressure zone is connected to the main fracturing zone pump group through the main pressure zone discharge high pressure pipeline, and the direction of the main fracturing zone high pressure pipeline is close to the direction of the fracturing main zone pump group. flow valve and the second cock valve; and the pressure relief assembly includes the third cock valve, the fourth cock valve, the decompression pipe and the discharge cock valve, the discharge pipeline and the blowdown tank connected in sequence, and the third cock The valve is connected to the high-pressure connection pipeline of the pressure relief process.
在本发明所述的页岩气水平井高压泵送桥塞装置中，所述泄压组件还包括压力平衡组件，所述压力平衡组件连接在所述第四旋塞阀与所述降压管汇放喷旋塞阀之间的管路上；所述压力平衡组件包括清水罐、以及与所述清水罐相连接的泵车，所述清水罐的出水端设置有第五旋塞阀，并且所述第五旋塞阀通过高压排出歧管连接在所述第四旋塞阀与所述降压管汇放喷旋塞阀之间的管路上。In the high-pressure pumping bridge plug device for shale gas horizontal wells according to the present invention, the pressure relief assembly further includes a pressure balance assembly, and the pressure balance assembly is connected between the fourth cock valve and the decompression manifold On the pipeline between the discharge cock valves; the pressure balance assembly includes a clean water tank and a pump truck connected to the clean water tank, the water outlet end of the clean water tank is provided with a fifth cock valve, and the fifth The cock valve is connected to the pipeline between the fourth cock valve and the decompression pipe manifold discharge cock valve through a high-pressure discharge manifold.
在本发明所述的页岩气水平井高压泵送桥塞装置中，所述泄压组件还包括泄压辅助组件，所述压力辅助组件包括第六旋塞阀、第七旋塞阀以及第八旋塞阀，并且所述第八旋塞阀的两端分别通过第二T型三通和所述第三T型三通连接所述第三旋塞阀两端的管路上；所述第六旋塞阀和所述第七旋塞阀串联，并且所述第七旋塞阀通过第四T型三通连接在所述第二旋塞阀与所述压裂主区泵组之间的管路上，所述第六旋塞阀通过第五T型三通连接在所述第二T型三通与所述第四旋塞阀之间的管路上。In the high-pressure pumping bridge plug device for shale gas horizontal wells according to the present invention, the pressure relief assembly further includes a pressure relief auxiliary assembly, and the pressure auxiliary assembly includes a sixth cock valve, a seventh cock valve, and an eighth cock valve, and the two ends of the eighth cock valve are respectively connected to the pipelines at both ends of the third cock valve through the second T-type tee and the third T-type tee; the sixth cock valve and the The seventh cock valve is connected in series, and the seventh cock valve is connected to the pipeline between the second cock valve and the pump set in the main fracturing area through a fourth T-way tee, and the sixth cock valve is connected through The fifth T-shaped tee is connected to the pipeline between the second T-shaped tee and the fourth plug valve.
实施本发明所述的页岩气水平井高压泵送桥塞装置，具有以下有益效果：Implementation of the shale gas horizontal well high-pressure pumping bridge plug device described in the present invention has the following beneficial effects:
1、所述页岩气水平井高压泵送桥塞装置的桥塞泵送机构和压裂液泵送机构分开设置，其可以实现桥塞泵送机构和压裂液泵送机构的独立控制，互不干扰，可以在所述页岩气水平井高压泵送桥塞装置工作期间对所述桥塞泵送机构进行维修等。1. The bridge plug pumping mechanism and the fracturing fluid pumping mechanism of the shale gas horizontal well high-pressure pumping bridge plug device are set separately, which can realize the independent control of the bridge plug pumping mechanism and the fracturing fluid pumping mechanism, Without interfering with each other, the bridge plug pumping mechanism can be maintained during the operation of the shale gas horizontal well high-pressure pumping bridge plug device.
2、所述页岩气水平井高压泵送桥塞装置包括泄压组件，不仅可以确保井口机构、井口桥塞封装机构、桥塞泵送机构以及压裂液泵送机构等正常启动，避免该装置的非正常破坏，还可以确保井口机构、井口桥塞封装机构、桥塞泵送机构以及压裂液泵送机构等工作的可靠性。2. The shale gas horizontal well high-pressure pumping bridge plug device includes a pressure relief component, which can not only ensure the normal start-up of the wellhead mechanism, the wellhead bridge plug packaging mechanism, the bridge plug pumping mechanism, and the fracturing fluid pumping mechanism, but also avoid the The abnormal damage of the device can also ensure the reliability of the wellhead mechanism, the wellhead bridge plug packaging mechanism, the bridge plug pumping mechanism and the fracturing fluid pumping mechanism.
附图说明Description of drawings
下面将结合附图及实施例对本发明作进一步说明，附图中：The present invention will be further described below in conjunction with accompanying drawing and embodiment, in the accompanying drawing:
图1是本发明所述的页岩气水平井高压泵送桥塞装置的示意图；Fig. 1 is the schematic diagram of the shale gas horizontal well high-pressure pumping bridge plug device of the present invention;
其中，图1中的附图标记为：Wherein, the reference numerals in Fig. 1 are:
1、井筒；2、井口上法兰；3、第一井口闸门；4、第二井口闸门；5、压裂头；6、第三井口闸门；7、桥塞注脂密封件；8、桥塞防喷管总成；9、井口防喷器；10、压裂液罐组；11、供液泵；12、泵送桥塞压裂泵组；13、供液泵上水软管；14、压裂泵上水软管；15、泵送桥塞入井管路；16、第一旋塞阀；17、第一单流阀；18、第一T型三通；19、排污池；20、第二单流阀；21、第二旋塞阀；22、第三旋塞阀；23、第四旋塞阀；24、降压管汇放喷旋塞阀；25、放喷管线；26、清水罐；27、泵车；28、第五旋塞阀；29、第五T型三通；30、第六旋塞阀；31、第七旋塞阀；32、第八旋塞阀；33、压裂主区泵组；34、主压区入井高压管路；35、泄压流程高压连接管路；36、主压区排出高压管路；37、高压排出歧管；38、第六T型三通；39、第二T型三通；40、第三T型三通；41、第四T型三通。1. Wellbore; 2. Wellhead upper flange; 3. First wellhead gate; 4. Second wellhead gate; 5. Fracturing head; 6. Third wellhead gate; 7. Bridge plug grease seal; 8. Bridge plug blowout preventer assembly; 9. Wellhead blowout preventer; 10. Fracturing fluid tank set; 11. Liquid supply pump; 12. Pumping bridge plug fracturing pump set; 13. Water supply hose for liquid supply pump; 14. Water supply hose for fracturing pump; 15. Pumping bridge plugged into the well pipeline; 16. The first plug valve; 17. The first check valve; 18. The first T-shaped tee; 19. Sewage tank; 20 , the second check valve; 21, the second cock valve; 22, the third cock valve; 23, the fourth cock valve; 24, the pressure-reducing manifold discharge cock; 25, the discharge pipeline; 26, the clean water tank; 27. Pump truck; 28. Fifth cock valve; 29. Fifth T-shaped tee; 30. Sixth cock valve; 31. Seventh cock valve; 32. Eighth cock valve; 33. Pump group for fracturing main area ; 34. High-pressure pipeline entering the well in the main pressure zone; 35. High-pressure connection pipeline in the pressure relief process; 36. High-pressure discharge pipeline in the main pressure zone; 37. High-pressure discharge manifold; 38. The sixth T-shaped tee; 39. The first Two T-shaped tees; 40, the third T-shaped tees; 41, the fourth T-shaped tees.
具体实施方式Detailed ways
为了对本发明的技术特征、目的和效果有更加清楚的理解，现对照附图详细说明本发明的具体实施方式。In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.
在本发明所述的页岩气水平井高压泵送桥塞装置中，包括井筒1、井口机构、井口桥塞封装机构、桥塞泵送机构以及压裂液泵送机构，所述井口机构和所述井口桥塞封装机构均连接在所述井筒1上，所述桥塞泵送机构和所述压裂液泵送机构均管路连接所述井筒1。由于所述页岩气水平井高压泵送桥塞装置的桥塞泵送机构和压裂液泵送机构分开设置，其可以实现桥塞泵送机构和压裂液泵送机构的独立控制，互不干扰，可以在所述页岩气水平井高压泵送桥塞装置工作期间对所述桥塞泵送机构进行维修等。In the shale gas horizontal well high-pressure pumping bridge plug device according to the present invention, it includes a wellbore 1, a wellhead mechanism, a wellhead bridge plug packaging mechanism, a bridge plug pumping mechanism and a fracturing fluid pumping mechanism, the wellhead mechanism and The wellhead bridge plug packaging mechanism is connected to the wellbore 1, and the bridge plug pumping mechanism and the fracturing fluid pumping mechanism are both connected to the wellbore 1 by pipelines. Since the bridge plug pumping mechanism and the fracturing fluid pumping mechanism of the shale gas horizontal well high-pressure pumping bridge plug device are set separately, it can realize the independent control of the bridge plug pumping mechanism and the fracturing fluid pumping mechanism, mutually Without interference, the bridge plug pumping mechanism can be maintained during the operation of the shale gas horizontal well high-pressure pumping bridge plug device.
在本发明所述的页岩气水平井高压泵送桥塞装置中，所述井口机构包括依次连接的井口上法兰2、第一井口闸门3、第二井口闸门4、压裂头5以及第三井口闸门6，并且所述井口上法兰2连接所述井筒1，工作时，开启所述第二井口闸门4和所述第三井口闸门6。In the high-pressure pumping bridge plug device for shale gas horizontal wells according to the present invention, the wellhead mechanism includes a wellhead upper flange 2, a first wellhead gate 3, a second wellhead gate 4, a fracturing head 5 and The third wellhead gate 6, and the wellhead upper flange 2 is connected to the wellbore 1. When working, the second wellhead gate 4 and the third wellhead gate 6 are opened.
在本发明所述的页岩气水平井高压泵送桥塞装置中，所述井口桥头塞封装机构包括依次连接的桥塞注脂密封件7、桥塞防喷管总成8以及井口防喷器9，并且所述井口防喷器9连接所述第三井口闸门6，从而通过加砂情况、排量测试等来确定泵送施工的排量、压力以及速度等，使得泵送量满足要求、且不存在杂质。In the high-pressure pumping bridge plug device for shale gas horizontal wells according to the present invention, the wellhead bridgehead plug packaging mechanism includes a bridge plug grease injection seal 7, a bridge plug blowout preventer assembly 8 and a wellhead blowout preventer device 9, and the wellhead blowout preventer 9 is connected to the third wellhead gate 6, so as to determine the displacement, pressure and speed of the pumping construction through sand addition, displacement test, etc., so that the pumping volume meets required and free from impurities.
在本发明所述的页岩气水平井高压泵送桥塞装置中，所述桥塞泵送机构包括压裂液罐组10、供液泵11和泵送桥塞压裂泵组12，所述压裂液罐组10通过供液泵上水软管13连接所述供液泵11；所述供液泵11通过压裂泵上水软管14连通所述泵送桥塞压裂泵组12，所述泵送桥塞压裂泵组12通过是泵送桥塞入井管路15连接所述压裂头5，并且在泵送桥塞入井管路15上沿着靠近所述压裂头5的方向依次设置有第一旋塞阀16和第一单流阀17。In the high-pressure pumping bridge plug device for shale gas horizontal wells according to the present invention, the bridge plug pumping mechanism includes a fracturing fluid tank set 10, a liquid supply pump 11 and a pumping bridge plug fracturing pump set 12. The fracturing fluid tank set 10 is connected to the liquid supply pump 11 through the liquid supply pump water supply hose 13; the liquid supply pump 11 is connected to the pumping bridge plug fracturing pump set through the fracturing pump water supply hose 14 12. The pumping bridge plug fracturing pump set 12 is connected to the fracturing head 5 through the pumping bridge plugging well pipeline 15, and on the pumping bridge plugging well pipeline 15 along the The direction of 5 is provided with a first stopcock 16 and a first check valve 17 in sequence.
工作时，开启第一旋塞阀16，电缆桥塞进入井筒1，并且电缆在直井段利用桥塞及射孔枪自身重量下放，直到工具在所述直井段不能自由下放后，上提电缆，校正深度；然后启动所述供液泵11和所述泵送桥塞压裂泵组12，此时所述压裂液罐组10中的工作液经过所述供液泵上水软管13后进入所述泵送桥塞压裂泵组12，然后进入所述泵送桥塞压裂泵组12的工作液经过增压后依次流经泵送桥塞入井管路15、所述第一旋塞阀16和第一单流阀17后通过所述压裂头5流入所述井筒1内。而且，在此过程中，工作液的泵送量为0.3m3/min～2m3/min左右，且在30°井斜时开泵到0.4m3/min的排量，当电缆张力增加时，慢慢将电缆速度提高至1000m/h～2000m/h；在45°井斜时增加排量到0.8m3/min，然后在60°井斜时增加排量到1.2m3/min，在75°井斜时增加排量到1.6m3/min,电缆速度为1000m/h～2000m/h，在水平段用1.6m3/min～1.8m3/min的排量泵送电缆复合桥塞到目的位置。在到达预订深度提前100m通知泵车操作工，提前10m通知泵车准备停泵，提前5m通知停泵、关闭所述第一旋塞阀16。坐封桥塞、射孔、上提电缆仪器串完全进入到所述桥塞防喷管总成8的内部后，关闭第三井口闸门6，卸掉所述桥塞防喷管总成8的内部压力，打开与所述井口防喷器9连接的所述桥塞防喷管总成8，拆卸所述桥塞注脂密封件7，拆射孔枪，检验射孔发射率，准备下次作业。When working, open the first cock valve 16, the cable bridge plug enters the wellbore 1, and the cable is lowered in the vertical well section by the weight of the bridge plug and the perforating gun itself, until the tool cannot be lowered freely in the vertical well section, the cable is lifted up and corrected. depth; then start the liquid supply pump 11 and the pumping bridge plug fracturing pump set 12, at this time, the working fluid in the fracturing fluid tank set 10 enters after passing through the water supply hose 13 of the liquid supply pump The pumping bridge plug fracturing pump unit 12, and then the working fluid entering the pumping bridge plug fracturing pump unit 12 is pressurized and flows through the pumping bridge plug into the well pipeline 15, the first plug valve 16 and the first check valve 17 and then flow into the wellbore 1 through the fracturing head 5 . Moreover, during this process, the pumping volume of the working fluid is about 0.3m3 /min to 2m3 /min, and the pump is turned on to a displacement of 0.4m3 /min when the well is inclined at 30°. When the cable tension increases , slowly increase the cable speed to 1000m/h~2000m/h; increase the displacement to 0.8m3 /min at 45° well deviation, and then increase the displacement to 1.2m3 /min at 60° well deviation, at Increase the displacement to 1.6m3 /min when the well is inclined at 75°, the cable speed is 1000m/h～2000m/h, and pump the cable composite bridge plug with a displacement of 1.6m3 /min～1.8m3 /min in the horizontal section to the destination location. Notify the pump truck operator 100m in advance when arriving at the predetermined depth, notify the pump truck 10m in advance to prepare to stop the pump, notify 5m in advance to stop the pump, and close the first cock valve 16. After setting the bridge plug, perforating, and lifting the cable instrument string completely into the inside of the bridge plug lubricator assembly 8, close the third wellhead gate 6, and remove the bridge plug lubricator assembly 8 internal pressure, open the bridge plug lubricator assembly 8 connected to the wellhead BOP 9, dismantle the bridge plug grease seal 7, dismantle the perforating gun, check the perforation emissivity, and prepare for the next step job.
在本发明所述的页岩气水平井高压泵送桥塞装置中，所述压裂液泵送机构包括压裂主区泵组33和泄压组件，所述压裂头5通过主压区入井高压管路34连接第一T型三通18的第一连接端，所述第一T型三通18的第二连接端通过泄压流程高压连接管路35连接所述排污组件，所述第一T型三通18的第三连接端通过主压区排出高压管路36连接所述压裂主区泵组33，并且所述主压区排出高压管路36上沿着靠近所述压裂主区泵组33的方向依次设置有第二单流阀20和第二旋塞阀21；并且所述泄压组件包括依次连接的第三旋塞阀22、第四旋塞阀23、降压管汇放喷旋塞阀24、放喷管线25以及排污池19，并且所述第三旋塞阀22连接所述泄压流程高压连接管路35。In the high-pressure pumping bridge plug device for shale gas horizontal wells according to the present invention, the fracturing fluid pumping mechanism includes a fracturing main zone pump set 33 and a pressure relief assembly, and the fracturing head 5 passes through the main pressure zone The well-entry high-pressure pipeline 34 is connected to the first connection end of the first T-shaped tee 18, and the second connection end of the first T-shaped tee 18 is connected to the sewage discharge assembly through a pressure relief process high-pressure connection pipeline 35. The third connection end of the first T-shaped tee 18 is connected to the pump group 33 of the main pressure zone through the main pressure zone discharge high pressure pipeline 36, and the main pressure zone discharge high pressure pipeline 36 is along the A second check valve 20 and a second cock valve 21 are arranged in sequence in the direction of the split main area pump group 33; The discharge cock valve 24 , the discharge pipeline 25 and the sewage tank 19 , and the third cock valve 22 is connected to the high-pressure connection pipeline 35 of the pressure relief process.
在本发明所述的页岩气水平井高压泵送桥塞装置中，所述泄压组件还包括压力平衡组件，所述压力平衡组件连接在所述第四旋塞阀23与所述降压管汇放喷旋塞阀24之间的管路上；所述压力平衡组件包括清水罐26、以及与所述清水罐26相连接的泵车27，所述清水罐26的出水端设置有第五旋塞阀28，并且所述第五旋塞阀28通过高压排出歧管37连接在所述第四旋塞阀23与所述降压管汇放喷旋塞阀24之间的管路上。In the high-pressure pumping bridge plug device for shale gas horizontal wells according to the present invention, the pressure relief assembly further includes a pressure balance assembly, and the pressure balance assembly is connected between the fourth cock valve 23 and the pressure relief pipe. On the pipeline between the discharge and discharge cock valves 24; the pressure balance assembly includes a clean water tank 26 and a pump truck 27 connected to the clean water tank 26, and the water outlet end of the clean water tank 26 is provided with a fifth cock valve 28, and the fifth cock valve 28 is connected to the pipeline between the fourth cock valve 23 and the decompression pipe manifold discharge cock valve 24 through the high-pressure discharge manifold 37.
具体连接时，所述高压排出歧管37通过第六T型三通38连接在所述第四旋塞阀23与所述降压管汇放喷旋塞阀24之间的管路上，连接时，所述第六T型三通38的第一连接端连接所述高压排出歧管37，所述第六T型三通38的第二连接端连接所述第四旋塞阀23，所述第六T型三通38的第三连接端连接所述降压管汇放喷旋塞阀24。When specifically connecting, the high-pressure discharge manifold 37 is connected on the pipeline between the fourth cock valve 23 and the pressure-reducing pipe sink discharge cock valve 24 through the sixth T-type tee 38. When connecting, the The first connecting end of the sixth T-shaped tee 38 is connected to the high-pressure discharge manifold 37, the second connecting end of the sixth T-shaped tee 38 is connected to the fourth plug valve 23, and the sixth T-shaped tee 38 is connected to the fourth plug valve 23. The third connecting end of the type tee 38 is connected to the pressure-reducing pipe manifold discharge plug valve 24.
在本发明所述的页岩气水平井高压泵送桥塞装置中，所述泄压组件还包括泄压辅助组件，所述压力辅助组件包括第六旋塞阀30、第七旋塞阀31以及第八旋塞阀32，并且所述第八旋塞阀32的两端分别通过第二T型三通39和所述第三T型三通40连接所述第三旋塞阀22两端的管路上；所述第六旋塞阀30和所述第七旋塞阀31串联、并且所述第七旋塞阀31通过第四T型三通41连接在所述第二旋塞阀21与所述压裂主区泵组33之间的管路上，所述第六旋塞阀30通过第五T型三通29连接在所述第二T型三通39与所述第四旋塞阀23之间的管路上。In the high-pressure pumping bridge plug device for shale gas horizontal wells according to the present invention, the pressure relief assembly further includes a pressure relief auxiliary assembly, and the pressure auxiliary assembly includes a sixth cock valve 30, a seventh cock valve 31 and a sixth cock valve 31. Eight cock valves 32, and the two ends of the eighth cock valve 32 are respectively connected to the pipelines at the two ends of the third cock valve 22 through the second T-type three-way 39 and the third T-type three-way 40; The sixth cock valve 30 and the seventh cock valve 31 are connected in series, and the seventh cock valve 31 is connected between the second cock valve 21 and the fracturing main area pump group 33 through a fourth T-shaped tee 41 On the pipeline between, the sixth plug valve 30 is connected to the pipeline between the second T-shaped three-way 39 and the fourth plug valve 23 through the fifth T-shaped three-way 29 .
工作时，开启所述第六旋塞阀30和所述第七旋塞阀31，使得从所述压裂主区泵组33流出的压裂液依次经过所述第四T型三通41、第七旋塞阀31、第六旋塞阀30以及第五T型三通29、第四旋塞阀23、降压管汇放喷旋塞阀24、放喷管线25后流入所述排污池19，从而达到泄压的目的，使得管路中的压力为0，以便于进行设备的维修。而且，当所述第三旋塞阀22和所述第六旋塞阀30由于管内压力过大而不能正常开启时，开启所述第五旋塞阀28、所述第四旋塞阀23，关闭所述降压管汇放喷旋塞阀24，启动所述泵车27，就可以使得所述清水罐26内的清水增压后依次流经所述第五旋塞阀28、第四旋塞阀23以及第五T型三通29，以降低所述第六旋塞阀30或所述第三旋塞阀22两端的压差，以确保所述第六旋塞阀30或所述第三旋塞阀22的正常开启，避免该装置的损毁，以确保所述的页岩气水平井高压泵送桥塞装置工作的可靠性。When working, open the sixth cock valve 30 and the seventh cock valve 31, so that the fracturing fluid flowing out from the pump group 33 in the fracturing main area passes through the fourth T-shaped tee 41, the seventh The cock valve 31, the sixth cock valve 30, the fifth T-shaped tee 29, the fourth cock valve 23, the pressure-reducing pipe sink discharge cock valve 24, and the discharge pipeline 25 flow into the blowdown pool 19 to achieve pressure relief. The purpose of making the pressure in the pipeline is 0, so as to facilitate the maintenance of the equipment. Moreover, when the third cock valve 22 and the sixth cock valve 30 cannot be opened normally due to excessive pressure in the pipe, the fifth cock valve 28 and the fourth cock valve 23 are opened, and the drop-down valve is closed. The pressure pipe confluence discharges the cock valve 24, and starts the pump truck 27, so that the clean water in the clean water tank 26 can be pressurized and then flow through the fifth cock valve 28, the fourth cock valve 23 and the fifth T valve. Type tee 29, to reduce the pressure difference across the sixth plug valve 30 or the third plug valve 22, to ensure the normal opening of the sixth plug valve 30 or the third plug valve 22, to avoid this The damage of the device is to ensure the reliability of the high-pressure pumping bridge plug device for the shale gas horizontal well.
上面结合附图对本发明的实施例进行了描述，但是本发明并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是限制性的，本领域的普通技术人员在本发明的启示下，在不脱离本发明宗旨和权利要求所保护的范围情况下，还可做出很多形式，这些均属于本发明的保护之内。Embodiments of the present invention have been described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementations, and the above-mentioned specific implementations are only illustrative, rather than restrictive, and those of ordinary skill in the art will Under the enlightenment of the present invention, many forms can also be made without departing from the gist of the present invention and the protection scope of the claims, and these all belong to the protection of the present invention.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910539246.9ACN110219610B (en) | 2019-06-20 | 2019-06-20 | Shale gas horizontal well high-pressure pumping bridge plug device |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910539246.9ACN110219610B (en) | 2019-06-20 | 2019-06-20 | Shale gas horizontal well high-pressure pumping bridge plug device |
| Publication Number | Publication Date |
|---|---|
| CN110219610Atrue CN110219610A (en) | 2019-09-10 |
| CN110219610B CN110219610B (en) | 2024-02-13 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910539246.9AActiveCN110219610B (en) | 2019-06-20 | 2019-06-20 | Shale gas horizontal well high-pressure pumping bridge plug device |
| Country | Link |
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| CN (1) | CN110219610B (en) |
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