CN109869124B - Adjustable constant-current blanking plug - Google Patents
Adjustable constant-current blanking plug Download PDFInfo
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- CN109869124B CN109869124B CN201910317055.8A CN201910317055A CN109869124B CN 109869124 B CN109869124 B CN 109869124B CN 201910317055 A CN201910317055 A CN 201910317055A CN 109869124 B CN109869124 B CN 109869124B
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- plunger
- cam
- cap
- fishing rod
- water injection
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Abstract
The invention relates to the technical field of oil extraction engineering, and belongs to the development of a plug in a water distributor for separate-zone water injection of a water injection well. The invention solves the problem that the water injection quantity changes along with the pressure when the water injection pressure fluctuates; and when the geological injection allocation scheme is adjusted, the injection amount can be adjusted through the existing high-efficiency testing and adjusting technology without throwing and dragging a blanking plug, and the problem of large testing workload is solved. The fishing rod mainly comprises a fishing rod (1), a pressing cap (2), a pressure spring (3), a cam rack (4), a cam (5), a small shaft (6), an O-shaped packing (7), a plunger cylinder (8), a plunger spring (9), an adjusting rod (10), a plunger main body (11), a ceramic stress sheet (12), a plunger cap (13) and a sieve plug (14). The effective overflowing area of the conical water nozzle is changed by adjusting the rod, the underground flow adjustment is realized, and the purpose of constant flow is achieved according to unchanged overflowing area and pressure difference, so that the test workload is reduced.
Description
The technical field is as follows: the invention relates to the technical field of oil extraction engineering, and belongs to an adjustable constant-flow plug for a water distributor for water injection well separate layer water injection.
Background art: the existing stratified water injection water distributor is a constant-flow blanking plug or an adjustable blanking plug, and has the following main problems that firstly, the constant-flow blanking plugs with different specifications correspond to water nozzles with different apertures, so that the specifications of the constant-flow blanking plugs are various, in field application, when the stratum injection quantity is changed, the new constant-flow blanking plugs need to be replaced, and the test workload is greatly increased; secondly, the adjustable plug cannot keep the water injection quantity constant when the water injection pressure fluctuates, so that the constant formation injection quantity cannot be realized. The invention can not only adjust the formation injection amount underground to realize flow adjustment, but also keep the water injection amount constant when the water injection pressure fluctuates.
The invention content is as follows: the invention designs an adjustable constant-current plug which changes the effective overflowing area of a conical water nozzle through an adjusting rod, so that the flow of the water nozzle can be adjusted corresponding to water nozzles of various specifications, the injection amount of a stratum can be adjusted underground, and the constant injection amount can be kept during injection pressure fluctuation.
The invention is realized by the following technical scheme. The invention is composed of a fishing rod, a pressure cap, a pressure spring, a cam frame, a cam, a small shaft, an O-shaped packing, a plunger barrel, a plunger spring, an adjusting rod, a plunger main body, a ceramic stress piece, a plunger cap and a screen plug, wherein the pressure cap is in threaded connection with the cam frame, the fishing rod passes through the pressure cap and is inserted into a groove of the adjusting rod, the pressure spring is sleeved on the fishing rod and is fixed by the pressure cap, the cam is connected with the fishing rod through the small shaft, the cam is fixed on the cam frame by the small shaft, the plunger barrel is in threaded connection with the cam frame, the O-shaped packing plays a sealing role therein, the plunger spring is arranged in the plunger barrel, the adjusting rod is in threaded connection with the plunger main body, the ceramic stress piece is arranged in the plunger cap, the plunger cap is in threaded connection with the plunger.
The hole of pottery atress piece is the bell mouth, and the lower extreme of adjusting the pole is the toper, adjusts the aperture between pole rotation control and the pottery atress piece, and the material of pottery atress piece is the ceramic material, measures the fishing rod of transferring the appearance to adjustable constant current blanking plug through even having the high-efficient of cable and rotates to the clearance of adjusting pole and pottery atress piece has been changed, reaches the injection allocation requirement with this regulation water injection volume.
Compared with the prior art, the invention has the following advantages:
the water injection quantity can be kept constant when the water injection pressure fluctuates, and when the geological injection allocation scheme is adjusted, the new blanking plug is not required to be thrown and fished for replacement, the injection allocation specification can be adjusted through the existing high-efficiency measuring and adjusting technology, so that the allocation and throwing and fishing test layer sections are reduced, the measuring and adjusting efficiency is improved, and the test workload is reduced. The ceramic stress sheet is made of ceramic materials, so that the corrosion resistance and the wear resistance can be improved, and the service life can be prolonged.
Description of the drawings: fig. 1 is a schematic structural view of the present invention.
The specific implementation mode is as follows: the invention is further described below with reference to the accompanying drawings: the invention is composed of a fishing rod 1, a pressing cap 2, a pressure spring 3, a cam rack 4, a cam 5, a small shaft 6, an O-shaped disc root 7, a plunger barrel 8, a plunger spring 9, an adjusting rod 10, a plunger main body 11, a ceramic stress sheet 12, a plunger cap 13 and a sieve plug 14, wherein press cap 2 and 4 threaded connection of cam rack, fishing rod 1 passes and presses cap 2 and regulation pole 10 recess grafting, pressure spring 3 cover is fixed on fishing rod 1 and by pressing cap 2, cam 5 passes through staff 6 with fishing rod 1 and is connected, cam 5 is fixed on cam rack 4 by staff 6, plunger section of thick bamboo 8 and 4 threaded connection of cam rack, O type packing 7 plays sealed effect wherein, plunger spring 9 establishes in plunger section of thick bamboo 8, adjust pole 10 and 11 threaded connection of plunger main part, pottery atress piece 12 is put in plunger cap 13, plunger cap 13 and 11 threaded connection of plunger main part, sieve stifled 14 and 8 threaded connection of plunger section of thick bamboo.
The adjusting rod 10 of the device controls the opening between the adjusting rod and the ceramic stress piece 12 in a rotating way, and the ceramic stress piece 12 is made of ceramic materials.
When the adjustable constant-current blanking plug is applied on site, a wellhead pulley is installed firstly, the adjustable constant-current blanking plug is delivered into the target layer eccentric water distributor through the throwing and fishing device, and then the fishing rod 1 of the adjustable constant-current blanking plug is rotated through the high-efficiency measuring and adjusting device connected with a cable, so that the gap between the adjusting rod 10 and the ceramic stress piece 12 is changed, and the water injection amount is adjusted to meet the injection allocation requirement.
When the injection pressure is increased, the plunger body 11 moves forwards, the water outlet is reduced, the pressure inside the plunger body 11 is suppressed to increase, the pressure difference between the injection pressure and the pressure inside the plunger body is constant, and the interception area at the water inlet of the control valve is not changed, so that the injection flow is constant; in the same way, when the injection pressure is reduced, the plunger main body 11 moves backwards, the water outlet is enlarged, the internal pressure of the plunger main body 11 is reduced, the difference value between the injection pressure and the internal pressure of the plunger body is still constant, the cut-off area is unchanged, and therefore the flow is constant, and the constant flow effect is achieved.
Claims (1)
1. The utility model provides a water injection well separate zone water injection water distributor is with adjustable constant current blanking plug which characterized in that: it is composed of a fishing rod (1), a pressing cap (2), a pressure spring (3), a cam rack (4), a cam (5), a small shaft (6), an O-shaped packing (7), a plunger barrel (8), a plunger spring (9), an adjusting rod (10), a plunger main body (11), a ceramic stress sheet (12), a plunger cap (13) and a sieve plug (14), wherein the pressing cap (2) is in threaded connection with the cam rack (4), the fishing rod (1) passes through the pressing cap (2) to be inserted into a groove of the adjusting rod (10), the pressure spring (3) is sleeved on the fishing rod (1) and fixed by the pressing cap (2), the cam (5) is connected with the fishing rod (1) through the small shaft (6), the cam (5) is fixed on the cam rack (4) through the small shaft (6), the plunger barrel (8) is in threaded connection with the cam rack (4), the O-shaped packing (7) plays a sealing role, the plunger spring (9) is arranged in the plunger barrel (8), adjust pole (10) and plunger main part (11) threaded connection, pottery atress piece (12) are put in plunger cap (13), plunger cap (13) and plunger main part (11) threaded connection, sieve stifled (14) and a plunger section of thick bamboo (8) threaded connection, the hole of pottery atress piece (12) is the bell mouth, the lower extreme of adjusting pole (10) is the toper, adjust the aperture between pole (10) rotation control and the pottery atress piece (12), the material of pottery atress piece (12) is ceramic material, fishing rod (1) to adjustable constant current blanking plug is rotatory through the high-efficient survey and regulation appearance that has the cable, thereby the clearance of adjusting pole (10) and pottery atress piece (12) has been changed, reach the injection allocation requirement with this regulation water injection volume.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910317055.8A CN109869124B (en) | 2019-04-19 | 2019-04-19 | Adjustable constant-current blanking plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910317055.8A CN109869124B (en) | 2019-04-19 | 2019-04-19 | Adjustable constant-current blanking plug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109869124A CN109869124A (en) | 2019-06-11 |
| CN109869124B true CN109869124B (en) | 2021-06-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910317055.8A Active CN109869124B (en) | 2019-04-19 | 2019-04-19 | Adjustable constant-current blanking plug |
Country Status (1)
| Country | Link |
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| CN (1) | CN109869124B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112360412B (en) * | 2020-12-03 | 2023-03-31 | 中国石油天然气股份有限公司 | Intelligent water distributor with flow regulating valve capable of being thrown and fished |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030221839A1 (en) * | 1998-08-21 | 2003-12-04 | Dewayne Turner | Double-pin radial flow valve |
| CN2856397Y (en) * | 2005-12-20 | 2007-01-10 | 大庆油田有限责任公司 | Constant flow regulatable obturator |
| WO2008050116A1 (en) * | 2006-10-24 | 2008-05-02 | Red Spider Technology Limited | Downhole apparatus and method |
| CN201292803Y (en) * | 2008-12-03 | 2009-08-19 | 贵州航天凯山石油仪器有限公司 | Cam screw mounting structure of adjustable packer |
| CN201620813U (en) * | 2010-01-19 | 2010-11-03 | 毛元红 | Steady flow adjustable blanking plug |
| CN102146786A (en) * | 2011-02-15 | 2011-08-10 | 董力维 | Polymer flooding and water flooding double-function external adjusting stopper |
| CN202000982U (en) * | 2011-03-11 | 2011-10-05 | 董力维 | Constant-flow and adjustable-flow double-function plug |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2713253Y (en) * | 2004-07-28 | 2005-07-27 | 王立平 | Constant flow water distributor |
| CN206396850U (en) * | 2017-01-03 | 2017-08-11 | 厦门永霖卫浴有限公司 | Multipurpose water intaking valve |
| CN107940057A (en) * | 2017-12-13 | 2018-04-20 | 宁波勋辉电器有限公司 | A kind of plunger-type pump of high pressure cleaner pressure regulator valve |
-
2019
- 2019-04-19 CN CN201910317055.8A patent/CN109869124B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030221839A1 (en) * | 1998-08-21 | 2003-12-04 | Dewayne Turner | Double-pin radial flow valve |
| CN2856397Y (en) * | 2005-12-20 | 2007-01-10 | 大庆油田有限责任公司 | Constant flow regulatable obturator |
| WO2008050116A1 (en) * | 2006-10-24 | 2008-05-02 | Red Spider Technology Limited | Downhole apparatus and method |
| CN201292803Y (en) * | 2008-12-03 | 2009-08-19 | 贵州航天凯山石油仪器有限公司 | Cam screw mounting structure of adjustable packer |
| CN201620813U (en) * | 2010-01-19 | 2010-11-03 | 毛元红 | Steady flow adjustable blanking plug |
| CN102146786A (en) * | 2011-02-15 | 2011-08-10 | 董力维 | Polymer flooding and water flooding double-function external adjusting stopper |
| CN202000982U (en) * | 2011-03-11 | 2011-10-05 | 董力维 | Constant-flow and adjustable-flow double-function plug |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109869124A (en) | 2019-06-11 |
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