CN111502618B - High-pressure multipurpose short joint for water injection well in oil field - Google Patents
High-pressure multipurpose short joint for water injection well in oil field Download PDFInfo
- Publication number
- CN111502618B CN111502618B CN202010337884.5A CN202010337884A CN111502618B CN 111502618 B CN111502618 B CN 111502618B CN 202010337884 A CN202010337884 A CN 202010337884A CN 111502618 B CN111502618 B CN 111502618B
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- Prior art keywords
- rod body
- pressure
- conical valve
- hollow
- nipple
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/04—Casing heads; Suspending casings or tubings in well heads
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/08—Valve arrangements for boreholes or wells in wells responsive to flow or pressure of the fluid obtained
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
Abstract
The high-pressure multipurpose nipple joint for the water injection well in the oil field comprises a cross-shaped nipple joint body consisting of a vertical rod body and a horizontal rod body, wherein a piston is arranged in an inner cavity of the vertical rod body, and a pressure gauge nipple is arranged at the upper end of the vertical rod body; the lower half section of the vertical rod body is a needle-shaped valve joint; a conical valve cavity is arranged in the horizontal rod body, a hollow conical valve core is arranged in the conical valve cavity, and a conical head sealing ring is arranged at the left end of the hollow conical valve core; the left end of the conical valve cavity is provided with a vent; a pressing cap is arranged at the right end of the conical valve cavity; the outer side of the pressing cap is provided with a jackscrew nut; the jackscrew nut is in threaded connection with the conical valve cavity extending out of the pressure cap; a right limit check ring and a left limit check ring are arranged on the inner wall of the conical valve cavity on the left side of the pressure cap; a spring is arranged between the right limit retainer ring and the left limit retainer ring; the right end of the spring is connected with the sealing valve ball; the rod body of the hollow emptying screw penetrates through the jackscrew nut, and the left end of the rod body is in contact connection with the top of the sealing valve ball; has the characteristics of small volume, simple structure, good sealing effect, cost reduction and safety.
Description
Technical Field
The application belongs to the technical field of needle valves of oil field water injection wells, and particularly relates to a high-pressure multipurpose short joint of an oil field water injection well.
Background
The pressure gauge of the water injection well used in the oil field is a common pressure gauge of 30MPA, and the price is about 46 yuan. The pressure valve connected with the pressure gauge is a needle valve with the design pressure of 25MPA and the price is about 90 yuan. Under the extreme weather in winter and the water injection well corruption needle type valve inner structure's the condition, the manometer often takes place to freeze and damages, and pressure can't be taken, and needle type valve often takes place to puncture and the sealed condition not tight. And the situation that the high valve of water pressure leaks and can't be changed often takes place during the change for water injection well pressure recording work can't normally go on, and the potential safety hazard is big when changing sealed not tight valve or manometer winter moreover, and sometimes the pressure superpressure produces the damage to equipment, and the replacement cost is higher.
Specifically, in the process of using the needle valve in winter in the prior art, the problems of puncture, failure to close and difficulty in replacement often occur, and the problem rate is about 2/3; the pressure gauge is used in winter, the pressure gauge is a common pressure gauge with the pressure gauge of 30MPA, the spring pipe is always frozen and deformed in winter, the pressure gauge is damaged, and the problem rate is 7/10; the oil casing pressure can not be recorded, the oil casing pressure can not be recorded by the water injection well, technical data are lost, and the risk of replacing the needle valve and the pressure gauge in winter is always high.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide the high-pressure multipurpose short section of the oil field water injection well, which has the characteristics of small volume, simple structure, good sealing effect, cost reduction and safety.
In order to achieve the purpose, the invention adopts the technical scheme that: the high-pressure multipurpose nipple joint for the water injection well in the oil field comprises a cross-shaped nipple joint body consisting of a vertical rod body and a horizontal rod body, wherein a piston is arranged in an inner cavity at the upper section of the vertical rod body, and a pressure gauge nipple is arranged at the upper end of the vertical rod body; a hydraulic oil guide channel is arranged on the vertical rod body wall on the running side of the piston; the lower section of the vertical rod body is provided with a needle-shaped valve joint; a conical valve cavity is arranged in the horizontal rod body, a hollow conical valve core is arranged in the conical valve cavity, and a conical head sealing ring is arranged at the left end of the hollow conical valve core; the left end of the conical valve cavity is provided with a vent; a pressing cap is arranged at the right end of the conical valve cavity; a jackscrew nut is arranged on the outer side of the pressing cap; the jackscrew nut is in threaded connection with the conical valve cavity extending out of the pressure cap; a right limit check ring and a left limit check ring are arranged on the inner wall of the conical valve cavity on the left side of the pressure cap; a spring is arranged in a space between the right limit retainer ring and the left limit retainer ring; the right end of the spring is connected with the sealing valve ball; the rod body of the hollow emptying screw penetrates through the jackscrew nut, and the left end of the rod body of the hollow emptying screw is connected with the top of the sealing valve ball in a contacting manner.
The needle valve joint is internally provided with a joint internal thread.
And a piston check ring is arranged on the vertical rod body wall on the lower side of the pressure gauge nozzle.
The outer wall of the piston is provided with a piston sealing valve; the piston seal valve has at least 2 groups.
And a stroke baffle is arranged on the outer wall of the left end of the hollow emptying screw.
The ball seat blocks the sealing valve ball from moving outwards. The hole in the center of the ball seat is used for the hollow emptying screw to extend in and out.
The left end of the hollow emptying screw is provided with an air outlet, and air enters from the left end and exits from the right end of the air outlet of the hollow emptying screw.
The invention has the beneficial effects that:
compared with the prior art, the device mainly adopts a thread sealing mode, has the advantages of simple mode, reliable structure, good sealing effect and wide applicable temperature range in winter, and can replace a needle valve and prevent the pressure gauge from being frozen by transmitting pressure in equal areas through the piston. And the pressure spring is arranged in the device, so that the device can be automatically emptied when the pressure exceeds the critical pressure of the device, and the safety of the device is ensured.
The device mainly comprises an internal fluid guide groove, a conical sealing structure, an antifreeze liquid cavity and a spiral safety pin. The water flow jacks up the conical piston through the fluid guide groove and the backflow channel, and then pressure is transmitted to the pressure gauge through the antifreeze. And when the conical sealing ring is replaced, the spiral safety pin is opened. The device has the advantages of 10CM high volume, 3.5CM diameter, small volume and elegant appearance.
The invention tests and simulates the low-temperature environment of 20 ℃ below zero, and can realize the pressure value of 30 MPA.
The device has the advantages of low cost, simple structure, safety and reliability, and the arranged internal sealing part can be simply replaced; according to the calculation of 397 ports of water injection wells and 197 ports of water distribution rooms in our areas, 794 pressure meters and 1388 needle valves are needed, under the condition of winter, the damage rate of the pressure meters of the water injection wells is about 2/3, the damage rate of the needle valves is 2/5, and the cost saved in the year is 794 multiplied by 2/3 multiplied by 46 yuan +1388 multiplied by 2/5 multiplied by 90 yuan which is 74317 yuan.
The invention can efficiently overcome the problem of pipeline pressure recording in winter, well guarantees the adjustment of water injection parameters, and avoids safety accidents caused by replacing the needle valve and the pressure gauge in winter.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
The structural and operational principles of the present invention are explained in further detail below with reference to the accompanying drawings and examples.
Referring to fig. 1, the high-pressure multipurpose nipple for the water injection well in the oil field comprises a cross nipple body 1 consisting of a vertical rod body and a horizontal rod body, wherein a piston 4 is arranged in an inner cavity of the upper section of the vertical rod body, and a pressure gauge nozzle 3 is arranged at the upper end of the vertical rod body; a hydraulic oil guide channel 5 is arranged on the vertical rod body wall on the running side of the piston 4; the lower section of the vertical rod body is provided with a needle-shaped valve joint 2; a conical valve cavity 10 is arranged in the horizontal rod body, a hollow conical valve core 7 is arranged in the conical valve cavity 10, and a conical head sealing ring 8 is arranged at the left end of the hollow conical valve core 7; the left end of the conical valve cavity 10 is provided with a vent 9; a pressing cap 11 is arranged at the right end of the conical valve cavity 10; a jackscrew nut 12 is arranged on the outer side of the pressing cap 11; the jackscrew nut 12 is in threaded connection with the conical valve cavity 10 extending out of the pressure cap 11; a right limit retainer ring 15 and a left limit retainer ring 18 are arranged on the inner wall of the conical valve cavity 10 on the left side of the pressure cap 11; a spring 16 is arranged in a space between the right limit retainer ring 15 and the left limit retainer ring 18; the right end of the spring 16 is connected with a sealing valve ball 19; a ball seat 21 is arranged on the inner wall of the hollow conical valve core 7 on the right side of the sealing valve ball 19; the body of the hollow emptying screw 13 passes through the jackscrew nut 12, and the left end of the body is connected with the sealing valve ball 19 in a jacking way.
The needle valve joint 2 is internally provided with a joint internal thread 17.
And a piston check ring is arranged on the wall of the vertical rod below the pressure gauge nozzle 3.
The outer wall of the piston 4 is provided with a piston sealing valve 6; the piston sealing valves 6 have at least 2 groups.
The outer wall of the left end of the hollow emptying screw 13 is provided with a stroke baffle 22, and the stroke baffle 22 limits the distance that the hollow emptying screw 13 extends into the inner cavity of the hollow conical valve core 7.
The ball seat 21 blocks the sealing valve ball 19 from moving outward. The hole in the center of the ball seat is used for the hollow emptying screw 13 to extend in and out.
The left end of the hollow emptying screw 13 is provided with an air outlet 23, and air enters from the left end of the air outlet of the hollow emptying screw 13 and exits from the right end.
The working principle of the invention is as follows:
this body 1 is connected on the high-pressure nipple joint through internal thread 17, and when rivers got into the hollow cavity 10 of cone valve, reach piston 4 through hollow toper case 7 with pressure, the last filling of piston 4 has hydraulic oil, and pressure gauge joint 3 connects the manometer, and piston 4 pressurizes hydraulic oil, reaches to the manometer that pressure gauge joint 3 connects on. The spring 16 is a pressure spring, when the pressure is increased to the critical pressure, the spring pushes the sealing valve ball 19 open, the sealing valve ball 19 moves rightwards (see fig. 1), and the pressure is relieved through the hollow emptying screw 13, so that the safety of the device is guaranteed. When the pressure gauge needs to be replaced, the jackscrew nut 12 is rotated and opened, the residual pressure is discharged through the discharge port 9, and the direction of the discharge port faces downwards, so that the safety of an operator is ensured. The lubricating property of the piston is ensured by the hydraulic oil guide channel 5, the inner cavity wall of the hollow conical valve core 7 is provided with a left safety limit stop 18 and a right safety limit stop 15, the conical valve cavity is arranged on the left side of the inner wall of the pressure cap 11, and the spring 16 and the sealing valve ball 19 are positioned between the left safety limit stop 18 and the right safety limit stop 15; the left end of the inner cavity wall of the conical valve cavity 10 is provided with a conical valve cavity safety limiting stopper 14, and the conical valve cavity safety limiting stopper 14 is matched with an outer wall limiting stopper 20 on the outer wall of the hollow conical valve core 7.
Claims (7)
1. The high-pressure multipurpose nipple for the water injection well in the oil field is characterized by comprising a cross nipple body (1) consisting of a vertical rod body and a horizontal rod body, wherein a piston (4) is arranged in an inner cavity at the upper section of the vertical rod body, and a pressure gauge nozzle (3) is arranged at the upper end of the vertical rod body; a hydraulic oil guide channel (5) is arranged on the vertical rod body wall on the running side of the piston (4); the lower section of the vertical rod body is provided with a needle-shaped valve joint (2); a conical valve cavity (10) is arranged in the horizontal rod body, a hollow conical valve core (7) is arranged in the conical valve cavity (10), and a conical head sealing ring (8) is arranged at the left end of the hollow conical valve core (7); the left end of the conical valve cavity (10) is provided with a vent (9); a pressing cap (11) is arranged at the right end of the conical valve cavity (10); a jackscrew nut (12) is arranged on the outer side of the pressing cap (11); the jackscrew nut (12) is in threaded connection with the conical valve cavity (10) extending out of the pressure cap (11); a right limit check ring (15) and a left limit check ring (18) are arranged on the inner wall of the conical valve cavity (10) on the left side of the pressure cap (11); a spring (16) is arranged in a space between the right limit retainer ring (15) and the left limit retainer ring (18); the right end of the spring (16) is connected with the sealing valve ball; the rod body of the hollow emptying screw (13) penetrates through the jackscrew nut, the rod body of the hollow emptying screw (13) penetrates through the jackscrew nut (12), and the left end of the rod body of the hollow emptying screw is connected with the sealing valve ball (19) in a jacking and contacting way.
2. The high-pressure multipurpose nipple for the oilfield water injection well according to claim 1, characterized in that a joint internal thread (17) is arranged in the needle valve joint (2).
3. The high-pressure multipurpose nipple for the water injection well in the oil field according to claim 1, characterized in that a piston retaining ring is arranged on the wall of the vertical rod on the lower side of the pressure gauge nipple (3).
4. The high-pressure multipurpose nipple for the oilfield injection well according to claim 1, characterized in that the outer wall of the piston (4) is provided with a piston seal valve (6); the piston sealing valves (6) have at least 2 groups.
5. The high-pressure multipurpose nipple for the oilfield injection well according to claim 1, characterized in that a stroke baffle (22) is arranged on the outer wall of the left end of the hollow emptying screw (13).
6. The high-pressure multipurpose nipple for oilfield injection wells according to claim 1, characterized in that the sealing valve ball (19) is blocked by a ball seat (21) when running outwards; the hole in the center of the ball seat is used for the hollow emptying screw (13) to extend into and extend out.
7. The high-pressure multipurpose nipple for the oilfield injection well according to claim 1, wherein the left end of the hollow vent screw (13) is provided with an air outlet (23), and air enters from the left end and exits from the right end of the air outlet of the hollow vent screw (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010337884.5A CN111502618B (en) | 2020-04-26 | 2020-04-26 | High-pressure multipurpose short joint for water injection well in oil field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010337884.5A CN111502618B (en) | 2020-04-26 | 2020-04-26 | High-pressure multipurpose short joint for water injection well in oil field |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111502618A CN111502618A (en) | 2020-08-07 |
| CN111502618B true CN111502618B (en) | 2022-04-26 |
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ID=71866326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010337884.5A Active CN111502618B (en) | 2020-04-26 | 2020-04-26 | High-pressure multipurpose short joint for water injection well in oil field |
Country Status (1)
| Country | Link |
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| CN (1) | CN111502618B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4044834A (en) * | 1975-04-09 | 1977-08-30 | Perkins Lee E | Apparatus and method for controlling the flow of fluids from a well bore |
| RU2002045C1 (en) * | 1992-01-23 | 1993-10-30 | Аранжан Токсанбаев | Mechanically controlled union |
| CN201121505Y (en) * | 2007-11-01 | 2008-09-24 | 天津市大港仪表有限公司 | Control valve for oil well pouring with anti-shock performance |
| CN202170777U (en) * | 2011-06-30 | 2012-03-21 | 中国石油天然气股份有限公司 | Cone valve type well head blowout preventer |
| CN104514521A (en) * | 2013-09-27 | 2015-04-15 | 中国石油天然气股份有限公司 | Access type associated gas recycling device |
| CN204716198U (en) * | 2015-05-11 | 2015-10-21 | 王俊伟 | Portable multi-function ball-and-seat |
| CN206562929U (en) * | 2017-03-11 | 2017-10-17 | 中国石油化工股份有限公司 | Oil well intelligent sampler |
-
2020
- 2020-04-26 CN CN202010337884.5A patent/CN111502618B/en active Active
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| CN111502618A (en) | 2020-08-07 |
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