CN211287593U - Oil field oil recovery well head well plugging device - Google Patents
Oil field oil recovery well head well plugging device Download PDFInfo
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- CN211287593U CN211287593U CN201922079461.3U CN201922079461U CN211287593U CN 211287593 U CN211287593 U CN 211287593U CN 201922079461 U CN201922079461 U CN 201922079461U CN 211287593 U CN211287593 U CN 211287593U
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- pipe
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- sleeve
- fixed sleeve
- sealing
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Abstract
The utility model relates to an oil field oil recovery well head device of sealing up, its technical scheme is: the welding of well head sheathed tube outside has first flange, well head sheathed tube upper end is equipped with fixed sleeve, fixed sleeve's top welding has fixed pipe, the inside of fixed pipe is equipped with first fixed plate and second fixed plate, through-hole, hemisphere groove and rectangular channel have been seted up at the middle part of first fixed plate, one side of fixed sleeve is equipped with the test tube, install the barometer on the test tube, the test tube is kept away from fixed sleeve's one end and is equipped with the tube cap, install the exhaust nozzle on the tube cap, install the air discharge valve on the exhaust nozzle. The utility model discloses a gas pressure that detects out that the barometer can be quick can collect the gas in the detection tube through the exhaust nozzle, is convenient for detect the gas in the detection tube to take different measures according to the condition, improved the security performance, be favorable to the safety in production.
Description
Technical Field
The utility model relates to a production well field, concretely relates to oil field oil recovery well head shut-in device.
Background
An oil well is a borehole drilled by a well placement system planned for the development of an oil field for the exploitation of oil, the oil rising from the bottom of the well to the top of the well. After drilling oil layer, the oil layer casing is set, and the cement is injected into the annular space between casing and well wall to maintain well wall and seal oil, gas and water layer.
At the later stage of oil field development, partial oil-water well needs to be closed because of various reasons, and the mode commonly used at present is, with sleeve pipe nipple joint department with steel sheet seal welding after demolising ground equipment and well head, when needs resume production, can not measure the gas pressure in the well and draw the gas sample, the security performance is not high, is unfavorable for the problem of safety in production.
Therefore, it is necessary to develop a well plugging device for oil production well head in oil field to solve the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an oil field oil recovery well head device of sealing a well, through rotating the handle, make to remove the pipe and move down, promote the hemisphere seal piece through the connecting rod, rectangle seal piece and backup pad move down, make hemisphere seal piece and rectangle seal piece and hemisphere groove and rectangular channel separation, gas in the oil recovery well passes through the rectangular channel, hemisphere groove and through-hole get into the transition intracavity, get into in the detecting tube again, can be quick through the barometer and detect out gaseous pressure, the reverse rotation handle again, it is sealed with rectangular channel and hemisphere groove, open the air discharge valve, can collect the gas in the detecting tube through the air discharge nozzle, be convenient for detect the gas in the detecting tube, thereby take different measures according to the circumstances, the security performance is improved, be favorable to safety in production, with the above-mentioned weak point in the solution technique.
In order to achieve the above object, the present invention provides the following technical solutions: a well sealing device for an oil extraction well mouth of an oil field comprises a well mouth sleeve, wherein a first flange is welded on the outer side of the well mouth sleeve, a fixing sleeve is arranged at the upper end of the well mouth sleeve, a fixing pipe is welded at the top of the fixing sleeve, a first fixing plate and a second fixing plate are arranged inside the fixing pipe, a sealing cavity is formed between the first fixing plate and the fixing sleeve, the sealing cavity is communicated with an inner cavity of the well mouth sleeve, a through hole, a semi-spherical groove and a rectangular groove are formed in the middle of the first fixing plate, the through hole is positioned above the semi-spherical groove, the semi-spherical groove is positioned above the rectangular groove, the central lines of the through hole, the semi-spherical groove and the rectangular groove are coincided, a semi-spherical sealing block is nested inside the semi-spherical groove, a rectangular sealing block is nested inside the rectangular groove, and a supporting plate is fixedly, be equipped with the spring between backup pad and the fixed sleeve's the top, the second fixed plate is located the top of first fixed plate, be equipped with the transition chamber between second fixed plate and the first fixed plate, the top of second fixed plate is equipped with removes the chamber, the inner wall that removes the chamber is equipped with the screw thread, fixed sleeve's top has the closing plate through welded fastening, the middle part swing joint of closing plate has the bull stick, the upper end fixedly connected with handle of bull stick, the lower extreme of bull stick stretches into and removes the intracavity and has the cross pole through welded fastening, the inside nested removal pipe that has of removal chamber, the surface of removing the pipe is equipped with the screw thread, remove through threaded connection between pipe and the removal chamber, the inside of removing the pipe is equipped with the cross passageway.
Preferably, above-mentioned cross rod nestification is in the inside of cross passageway, and sets up to sliding connection between cross rod and the cross passageway, the lower extreme of removal pipe is connected with the connecting rod, the lower extreme of connecting rod runs through the second fixed plate, and sliding connection between connecting rod and the second fixed plate, the inside and the hemisphere sealing piece fixed connection of through-hole are stretched into to the lower extreme of connecting rod, the cross-section circle diameter of through-hole is greater than the cross-section circle diameter of connecting rod, fixed telescopic one side is equipped with the test tube, the inner chamber and the transition chamber of test tube are linked together, install the barometer on the test tube, the test tube is kept away from fixed telescopic one end and is equipped with the tube cap, install the exhaust nozzle on the tube cap, install the exhaust valve on the exhaust.
Preferably, the wellhead casing is connected with the fixed sleeve in a sealing mode through threads, and a sealing ring is arranged between the wellhead casing and the fixed sleeve.
Preferably, the lower end of the fixed sleeve is welded with a second flange, and the second flange is connected with the first flange through a bolt.
Preferably, the rectangular sealing block and the hemispherical sealing block are made of rubber, and are integrated through machining.
Preferably, the upper end of the spring is fixedly connected with the supporting plate, and the lower end of the spring is fixedly connected with the top of the fixing sleeve.
Preferably, the upper end of the connecting rod is movably connected with the moving pipe through a bearing.
Preferably, the pipe cover is in threaded connection with the detection pipe, and a sealing ring is arranged between the pipe cover and the detection pipe.
In the technical scheme, the utility model provides a technological effect and advantage:
through rotating the handle, make the removal pipe move down, promote the hemisphere seal piece through the connecting rod, rectangle seal piece and backup pad move down, make hemisphere seal piece and rectangle seal piece and hemisphere groove and rectangular channel separation, gas in the oil recovery well passes through the rectangular channel, hemisphere groove and through-hole get into the transition intracavity, reentrant in the detecting tube, can be quick through the barometer and detect gaseous pressure, the contrarotation handle again, it is sealed with rectangular channel and hemisphere groove, open the exhaust valve, can collect the gas in the detecting tube through the exhaust nozzle, be convenient for detect the gas in the detecting tube, thereby take different measures according to the circumstances, the safety performance is improved, be favorable to the safety in production.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an enlarged view of the point A of FIG. 1 according to the present invention;
FIG. 3 is an enlarged view of the point B of FIG. 1 according to the present invention;
FIG. 4 is a top view of the movable tube of the present invention;
FIG. 5 is a cross bar structure view of the present invention;
description of reference numerals:
1 well head sleeve pipe, 2 first flange, 3 fixed sleeve, 4 fixed pipes, 5 first fixed plates, 6 second fixed plates, 7 sealing cavities, 8 through holes, 9 hemispherical grooves, 10 rectangular grooves, 11 hemispherical sealing blocks, 12 rectangular sealing blocks, 13 supporting plates, 14 springs, 15 transition cavities, 16 moving cavities, 17 sealing plates, 18 rotating rods, 19 handles, 20 cross rods, 21 moving pipes, 22 cross channels, 23 connecting rods, 24 detection pipes, 25 barometers, 26 pipe covers, 27 exhaust nozzles, 28 exhaust valves and 29 second flanges.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.
Further, in the technical scheme, the wellhead casing 1 is in threaded sealing connection with the fixed sleeve 3, and a sealing ring is arranged between the wellhead casing 1 and the fixed sleeve 3, so that the sealing performance of the connection between the wellhead casing 1 and the fixed sleeve 3 is improved;
further, in the above technical scheme, the lower end of the fixed sleeve 3 is welded with the second flange 29, and the second flange 29 is connected with the first flange 2 through the bolt, so that the connection stability and the connection tightness between the fixed sleeve 3 and the wellhead casing 1 are improved;
further, in the above technical solution, the rectangular sealing block 12 and the hemispherical sealing block 11 are made of rubber, and the rectangular sealing block 12 and the hemispherical sealing block 11 are integrated by processing, so that the structural strength is improved, the sealing is facilitated, and the sealing effect is good;
furthermore, in the above technical solution, the upper end of the spring 14 is fixedly connected with the support plate 13, and the lower end of the spring 14 is fixedly connected with the top of the fixing sleeve 3, so that the mounting stability of the spring 14 is improved, and the support plate 13 presses the rectangular sealing block 12 and the hemispherical sealing block 11 by the elastic force of the spring 14, so that the rectangular sealing block 12 and the hemispherical sealing block 11 are respectively in close contact with the rectangular groove 10 and the hemispherical groove 9, and the sealing performance is improved;
further, in the above technical solution, the upper end of the connecting rod 23 is movably connected with the moving pipe 21 through a bearing, so as to prevent the moving pipe 21 from rotating to drive the connecting rod 23 to rotate;
further, in the above technical solution, the pipe cover 26 is connected with the detection pipe 24 through a thread, and a sealing ring is arranged between the pipe cover 26 and the detection pipe 24, so that the sealing property between the pipe cover 26 and the detection pipe 24 is improved;
the implementation mode is specifically as follows: the fixed sleeve 3 is connected with a wellhead casing 1 on an oil production well in a threaded manner, a second flange 29 on the fixed sleeve 3 is connected with a first flange 2 on the wellhead casing 1 through a bolt, so that the fixed sleeve 3 is stably connected with the wellhead casing 1, a support plate 13 is tightly pressed on a rectangular sealing block 12 and a hemispherical sealing block 11 through the elastic force of a spring 14, the rectangular sealing block 12 and the hemispherical sealing block 11 are tightly contacted with a rectangular groove 10 and a hemispherical groove 9 respectively, the sealing performance is improved, when the production needs to be recovered, a handle 19 is rotated, the handle 19 drives a cross rod 20 to rotate through a rotating rod 18, the cross rod 20 rotates to drive a moving pipe 21 to rotate in a moving cavity 16, the moving pipe 21 moves downwards, the hemispherical sealing block 11 and the rectangular sealing block 12 are pushed to move downwards through a connecting rod 23, so that the hemispherical sealing block 11 and the rectangular sealing block 12 are separated from the hemispherical groove 9 and the rectangular groove 10 respectively, gas in the oil recovery well passes through rectangular channel 10, hemisphere groove 9 and through-hole 8 get into in the transition chamber 15, reentrant in the test tube 24, can be quick detect gaseous pressure through barometer 25, reverse rotation handle 19 again, it is sealed with rectangular channel 41 and hemisphere groove 9, open exhaust valve 28, can collect the gas in the test tube 24 through exhaust nozzle 27, be convenient for detect the gas in the test tube 24, thereby take different measures according to the circumstances, the security performance is improved, be favorable to the safety in production, this embodiment has specifically solved the gas pressure that can not measure in the well that exists among the prior art and has drawn the gas sample, the security performance is not high, be unfavorable for the problem of safety in production.
The utility model has the working principle that:
referring to the attached drawings 1-5 of the specification, a fixed sleeve 3 is in threaded connection with a wellhead casing 1 on an oil production well, a second flange 29 is fixed with a first flange 2 through bolts, when production needs to be resumed, a handle 19 is rotated, the handle 19 drives a cross rod 20 to rotate through a rotating rod 18, the cross rod 20 rotates to drive a moving pipe 21 to rotate in a moving cavity 16, the moving pipe 21 moves downwards at the same time, a connecting rod 23 pushes a hemispherical sealing block 11 and a rectangular sealing block 12 to move downwards, so that the hemispherical sealing block 11 and the rectangular sealing block 12 are separated from a hemispherical groove 9 and a rectangular groove 10 respectively, gas in the oil production well enters a transition cavity 15 through the rectangular groove 10, the hemispherical groove 9 and a through hole 8 and then enters a detection pipe 24, the pressure of the gas can be rapidly detected through a barometer 25, the handle 19 is rotated reversely to seal the rectangular groove 41 and the hemispherical groove 9, the exhaust valve 28 is opened, the gas in the detection pipe 24 can be collected through the exhaust nozzle 27, the gas in the detection pipe 24 can be conveniently detected, and therefore different measures can be taken according to conditions.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (8)
1. The utility model provides an oil field oil recovery well head device of sealing up, includes well head sleeve pipe (1), its characterized in that: the outer side of the wellhead casing (1) is welded with a first flange (2), the upper end of the wellhead casing (1) is provided with a fixed sleeve (3), the top of the fixed sleeve (3) is welded with a fixed pipe (4), the inside of the fixed pipe (4) is provided with a first fixed plate (5) and a second fixed plate (6), a sealed cavity (7) is formed between the first fixed plate (5) and the fixed sleeve (3), the sealed cavity (7) is communicated with the inner cavity of the wellhead casing (1), the middle part of the first fixed plate (5) is provided with a through hole (8), a hemispherical groove (9) and a rectangular groove (10), the through hole (8) is positioned above the hemispherical groove (9), the hemispherical groove (9) is positioned above the rectangular groove (10), and the central lines of the through hole (8), the hemispherical groove (9) and the rectangular groove (10) coincide with each other, the semi-spherical groove (9) is embedded with a semi-spherical sealing block (11), the rectangular groove (10) is embedded with a rectangular sealing block (12), the bottom of the rectangular sealing block (12) is fixedly connected with a supporting plate (13), a spring (14) is arranged between the supporting plate (13) and the top of the fixed sleeve (3), the second fixed plate (6) is positioned above the first fixed plate (5), a transition cavity (15) is arranged between the second fixed plate (6) and the first fixed plate (5), a moving cavity (16) is arranged above the second fixed plate (6), the inner wall of the moving cavity (16) is provided with threads, the top of the fixed sleeve (3) is fixedly provided with a sealing plate (17) by welding, the middle part of the sealing plate (17) is movably connected with a rotating rod (18), the upper end of the rotating rod (18) is fixedly connected with a handle (19), the lower extreme of bull stick (18) stretches into and moves in chamber (16) and be fixed with cross pole (20) through the welding, the inside nestification that moves chamber (16) has removal pipe (21), the surface that moves pipe (21) is equipped with the screw thread, move between pipe (21) and the removal chamber (16) through threaded connection, the inside that moves pipe (21) is equipped with cross passageway (22).
2. The oil field oil recovery wellhead well plugging device of claim 1, characterized in that: the cross rod (20) is nested in the cross channel (22), a sliding connection is arranged between the cross rod (20) and the cross channel (22), the lower end of the moving pipe (21) is connected with a connecting rod (23), the lower end of the connecting rod (23) penetrates through the second fixing plate (6), the connecting rod (23) and the second fixing plate (6) are connected in a sliding manner, the lower end of the connecting rod (23) stretches into the inside of the through hole (8) and is fixedly connected with the hemispherical sealing block (11), the section circular diameter of the through hole (8) is larger than that of the connecting rod (23), a detection pipe (24) is arranged on one side of the fixing sleeve (3), the inner cavity of the detection pipe (24) is communicated with the transition cavity (15), a barometer (25) is installed on the detection pipe (24), and a pipe cover (26) is arranged at one end, far away from the fixing sleeve (3), of the detection pipe (24), an exhaust nozzle (27) is installed on the pipe cover (26), and an exhaust valve (28) is installed on the exhaust nozzle (27).
3. The oil field oil recovery wellhead well plugging device of claim 2, characterized in that: the wellhead casing pipe is characterized in that the wellhead casing pipe (1) and the fixed sleeve (3) are connected in a sealing mode through threads, and a sealing ring is arranged between the wellhead casing pipe (1) and the fixed sleeve (3).
4. The oil field oil recovery wellhead well plugging device of claim 2, characterized in that: the lower end of the fixed sleeve (3) is welded with a second flange (29), and the second flange (29) is connected with the first flange (2) through bolts.
5. The oil field oil recovery wellhead well plugging device of claim 2, characterized in that: the rectangular sealing block (12) and the hemispherical sealing block (11) are made of rubber, and the rectangular sealing block (12) and the hemispherical sealing block (11) are integrated through machining.
6. The oil field oil recovery wellhead well plugging device of claim 2, characterized in that: the upper end of the spring (14) is fixedly connected with the support plate (13), and the lower end of the spring (14) is fixedly connected with the top of the fixed sleeve (3).
7. The oil field oil recovery wellhead well plugging device of claim 2, characterized in that: the upper end of the connecting rod (23) is movably connected with the moving pipe (21) through a bearing.
8. The oil field oil recovery wellhead well plugging device of claim 2, characterized in that: the pipe cover (26) is connected with the detection pipe (24) through threads, and a sealing ring is arranged between the pipe cover (26) and the detection pipe (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922079461.3U CN211287593U (en) | 2019-11-27 | 2019-11-27 | Oil field oil recovery well head well plugging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922079461.3U CN211287593U (en) | 2019-11-27 | 2019-11-27 | Oil field oil recovery well head well plugging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211287593U true CN211287593U (en) | 2020-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922079461.3U Expired - Fee Related CN211287593U (en) | 2019-11-27 | 2019-11-27 | Oil field oil recovery well head well plugging device |
Country Status (1)
| Country | Link |
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| CN (1) | CN211287593U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112539041A (en) * | 2020-12-02 | 2021-03-23 | 江苏恒达机械制造有限公司 | Gas production wellhead high-pressure valve structure and manufacturing process thereof |
| CN116335656A (en) * | 2023-05-30 | 2023-06-27 | 大庆市华禹石油机械制造有限公司 | Gas well wellhead exploitation monitoring device |
-
2019
- 2019-11-27 CN CN201922079461.3U patent/CN211287593U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112539041A (en) * | 2020-12-02 | 2021-03-23 | 江苏恒达机械制造有限公司 | Gas production wellhead high-pressure valve structure and manufacturing process thereof |
| CN116335656A (en) * | 2023-05-30 | 2023-06-27 | 大庆市华禹石油机械制造有限公司 | Gas well wellhead exploitation monitoring device |
| CN116335656B (en) * | 2023-05-30 | 2023-08-15 | 大庆市华禹石油机械制造有限公司 | Gas well wellhead exploitation monitoring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200818 Termination date: 20201127 |