CN111852375B - Well head and sealing protection device - Google Patents
Well head and sealing protection device Download PDFInfo
- Publication number
- CN111852375B CN111852375B CN202010692642.8A CN202010692642A CN111852375B CN 111852375 B CN111852375 B CN 111852375B CN 202010692642 A CN202010692642 A CN 202010692642A CN 111852375 B CN111852375 B CN 111852375B
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- pipeline
- oil well
- port
- spring
- fastening nut
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- 238000007789 sealing Methods 0.000 title abstract description 14
- 239000003129 oil well Substances 0.000 claims abstract description 55
- 230000003014 reinforcing effect Effects 0.000 claims description 18
- 230000002787 reinforcement Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 9
- 238000000605 extraction Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 22
- 230000008569 process Effects 0.000 description 22
- 239000007788 liquid Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Loading And Unloading Of Fuel Tanks Or Ships (AREA)
Abstract
The invention relates to the technical field of oil extraction wellhead sealing devices, and discloses a wellhead and sealing protection device, which comprises an oil well port connecting pipeline, wherein a waterproof gasket is movably sleeved outside the upper part of the oil well port connecting pipeline, and a connecting port frame main body is movably sleeved on the upper part of the oil well port connecting pipeline. This well head and sealed protection device, can promote the outside removal with the spacing buckle of device through spring one, through the gag lever post joint in gag lever post activity orbital inside, make can carry out the joint with the spacing buckle of device in the use fixed, in the use for this reason, stability when multiplicable device uses, but the inside at the lower part reinforced pipeline is fixed to the protruding joint of the spacing buckle of device simultaneously, make can play the stability when increasing the dress use, in the use for this reason, but the fixed effect of joint, stability when multiplicable device uses for this reason in the use.
Description
Technical Field
The invention relates to the technical field of oil extraction wellhead sealing devices, in particular to a wellhead and a sealing protection device.
Background
In the process of oil well exploitation, oil on the ground needs to be conveyed to the ground through a pipeline, but in the process of oil well exploitation, the pipeline requirement on an oil well mouth is strict, the phenomenon that the pressure intensity of the oil well mouth is large exists, the oil well mouth needs to be protected in the using process, a well mouth and a sealing protection device are developed for the purpose, and meanwhile the existing well mouth and the sealing protection device are improved.
In current well head and sealed protection device, inconvenient phenomenon appears in having the device installation, and unstable phenomenon appears connecting in the junction between oil well port connecting tube and the oil outlet pipeline simultaneously, has the device in the use, and the pressure is too big for having oil outlet pipe junction appearance for liquid spun phenomenon.
Disclosure of Invention
Aiming at the defects of the existing wellhead and sealing protection device, the invention provides the wellhead and sealing protection device which has the advantages of improving the stability during clamping and preventing the oil well port from loosening, and solves the problems in the background technology.
The invention provides the following technical scheme: a well mouth and sealing protection device comprises an oil well port connecting pipeline, a waterproof gasket is movably sleeved on the outer portion of the upper portion of the oil well port connecting pipeline, a connecting port frame main body is movably sleeved on the upper portion of the oil well port connecting pipeline, a fastening nut I is installed on one side of the lower portion of the connecting port frame main body, a fastening nut II is installed on the upper portion of the connecting port frame main body, a lower portion reinforcing pipeline is movably sleeved on the outer portion of the lower portion of the oil well port connecting pipeline, a fastening nut is sleeved on the inner portion of one side of the lower portion reinforcing pipeline, a push rod is movably sleeved on one side of the fastening nut, a limiting buckle is installed on one side of the push rod, a limiting rod is fixedly connected to the upper portion of one side of the limiting buckle, a limiting rod movable rail is arranged inside one side of the, the improved oil pipe comprises a connection port frame body, and is characterized in that a frame body connection pipeline is fixedly connected to one side of the connection port frame body, a lower portion connection plate is fixedly connected to the upper portion of one side of a lower portion reinforcing pipeline, a first fastening nut is sleeved on the inner portion of the lower portion connection plate in a movable mode, a second spring is fixedly connected to the inner portion of one side of the lower portion connection plate in a movable mode, a first spring fixing rod is fixedly connected to the inner portion of the second spring in a movable mode, a second spring fixing rod is sleeved on the inner portion of the upper portion of the second spring in a movable mode, a second fastening nut is adjusted on the inner portion of the upper portion of the frame body connection pipeline, an upper portion reinforcing.
Preferably, a groove is installed at the upper part of the oil well port connecting pipeline, the upper part of the oil well port connecting pipeline is clamped in the lower part of the connecting port frame body, and the waterproof gasket is clamped between the oil well port connecting pipeline and the connecting port frame body.
Preferably, the inside recess of seting up in both sides of oil well port connecting tube lower part, spring one and spacing buckle joint set up the inside of recess in oil well port connecting tube lower part, gag lever post and gag lever post movable rail install respectively and seted up four in the inside of the lower part of spacing buckle and oil well port connecting tube one side, gag lever post and gag lever post movable rail mutual joint are fixed.
Preferably, the fastening nut is externally provided with threads, the fastening nut is in threaded sleeve connection with the lower reinforcing pipeline, and the position of the limiting buckle is in contact with the position of the push rod.
Preferably, the upper part and the lower part of the frame main body connecting pipeline are respectively provided with a lower connecting plate and an upper connecting plate, the first fastening nut penetrates through the lower connecting plate and is fixedly sleeved in the frame main body connecting pipeline in a threaded manner, and the second fastening nut penetrates through the upper connecting plate and is fixedly sleeved on the upper part of the frame main body connecting pipeline.
Preferably, the second spring fixing rod is clamped between the frame main body connecting pipeline and the lower connecting plate, the first spring fixing rod and the second spring fixing rod are respectively fixed between the lower connecting plate and the frame main body connecting pipeline, and the first spring fixing rod and the second spring fixing rod are clamped between the second springs.
Preferably, the first fastening nut and the second fastening nut respectively penetrate through the connection port frame body and are fixed on the oil well port connection pipeline and the oil outlet pipeline, and four fastening nuts are respectively arranged on the upper portion and the lower portion of the connection port frame body.
Compared with the existing wellhead and sealing protection device, the invention has the following beneficial effects:
1. this well head and sealed protection device, through passing lower part connecting plate and upper portion connecting plate while screw thread fixed connection in the lower part and the upper portion of frame main part connecting tube with device fastening nut one and fastening nut two one side, make multiplicable device lower part connecting plate, stability between frame main part connecting tube and the upper portion connecting plate, device lower part connecting plate simultaneously, frame main part connecting tube and upper portion connecting plate be fixedly connected with oil well port connecting tube respectively, connect port frame main part and go out oil pipe on, in the use for this reason, can be with device oil well port connecting tube, connect the stability between port frame main part and the play oil pipe, in the use for this reason, stability when multiplicable device uses, make and prevent to connect not hard up phenomenon.
2. This well head and sealed protection device, can promote the outside removal with the spacing buckle of device through spring one, through the gag lever post joint in gag lever post activity orbital inside, make can carry out the joint with the spacing buckle of device in the use fixed, in the use for this reason, stability when multiplicable device uses, but the inside at the lower part reinforced pipeline is fixed to the protruding joint of the spacing buckle of device simultaneously, make can play the stability when increasing the dress use, in the use for this reason, but the fixed effect of joint, stability when multiplicable device uses for this reason in the use.
Drawings
FIG. 1 is a schematic front view of the structure of the present invention;
FIG. 2 is an enlarged view of the structure A of the present invention;
fig. 3 is an enlarged view of the structure B of the present invention.
In the figure: 1. the oil well port is connected with a pipeline; 2. a waterproof gasket; 3. a connection port frame body; 4. fastening a first nut; 5. fastening a second nut; 6. reinforcing the pipeline at the lower part; 7. fastening a nut; 8. a push rod; 9. a limiting buckle; 10. a limiting rod; 11. a stop lever movable rail; 12. a first spring; 13. the frame main body is connected with a pipeline; 14. a lower connecting plate; 15. fastening a first nut; 16. a second spring; 17. a first spring is fixed on the rod; 18. a second spring fixing rod; 19. fastening a second nut; 20. reinforcing the pipeline at the upper part; 21. an oil outlet pipeline; 22. an upper connecting plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, a well head and seal protection device includes an oil well port connecting pipe 1, a waterproof gasket 2 is movably sleeved on the outer portion of the upper portion of the oil well port connecting pipe 1, a connecting port frame body 3 is movably sleeved on the upper portion of the oil well port connecting pipe 1, a first fastening nut 4 is installed on one side of the lower portion of the connecting port frame body 3, a second fastening nut 5 is installed on the upper portion of the connecting port frame body 3, a lower reinforcing pipe 6 is movably sleeved on the outer portion of the lower portion of the oil well port connecting pipe 1, a fastening nut 7 is movably sleeved on the inner portion of one side of the lower reinforcing pipe 6, a push rod 8 is movably sleeved on one side of the fastening nut 7, a limit buckle 9 is installed on one side of the push rod 8, a limit rod 10 is fixedly connected on the upper portion of one side of the limit, one side fixedly connected with spring 12 of spacing buckle 9, one side fixedly connected with frame main part connecting tube 13 of connection port frame main part 3, the upper portion fixedly connected with lower part connecting plate 14 of lower part reinforced pipe 6 one side, fastening nut 15 has been cup jointed in the inside activity of lower part connecting plate 14 lower part, the inside fixedly connected with spring two 16 of lower part connecting plate 14 one side, the inside fixedly connected with spring dead lever 17 of spring two 16, spring dead lever two 18 has been cup jointed in the inside activity on spring two 16 upper portions, the inside movable adjustment on frame main part connecting tube 13 upper portion has fastening nut two 19, upper portion reinforced pipe 20 is installed on the upper portion of connection port frame main part 3, oil outlet pipe 21 has been cup jointed in the inside activity of upper portion reinforced pipe 20, one side fixedly connected with upper portion connecting plate 22 of oil outlet.
Wherein, the upper part of the oil well port connecting pipeline 1 is provided with a groove, the upper part of the oil well port connecting pipeline 1 is clamped in the inner part of the lower part of the connecting port frame body 3, the waterproof gasket 2 is clamped between the oil well port connecting pipeline 1 and the connecting port frame body 3, in the using process, the convex groove is arranged at the upper part of the oil well port connecting pipeline 1, and can be clamped and fixed in the connecting port frame body 3, so that the oil well port connecting pipeline plays a role in convenient installation in the using process, meanwhile, in the using process, the waterproof gasket 2 is fixedly connected between the oil well port connecting pipeline 1 and the connecting port frame body 3, so that in the using process, the sealing performance of the device in the use process can be improved, so that the phenomenon that liquid in the device flows out is prevented, and therefore the sealing performance of the device in the use process can be improved in the use process.
Wherein, the two sides of the lower part of the oil well port connecting pipeline 1 are provided with grooves, the first spring 12 and the limit buckle 9 are clamped in the grooves on the lower part of the oil well port connecting pipeline 1, the limit rod 10 and the limit rod movable track 11 are respectively arranged and provided at the lower part of the limit buckle 9 and the inner part of one side of the oil well port connecting pipeline 1, the limit rod 10 and the limit rod movable track 11 are mutually clamped and fixed, in the using process, the phenomenon that the pressure is too high at the connecting part of an oil outlet pipe in order to cause the liquid to be sprayed exists in the using process of the device, therefore, in the using process, one side of the limit buckle 9 is fixedly connected with the limit rod movable track 11, and is clamped and fixed in the inner part of one side of the oil well port connecting pipeline 1, and simultaneously, in the using process, the limit buckle 9 can be pushed to move, through the inside of gag lever post 10 joint at gag lever post movable rail 11 for can carry out the joint with device spacing buckle 9 in the use and fix, in the use for this reason, stability when multiplicable device uses, but the inside at lower part reinforced pipeline 6 is fixed to the joint of device spacing buckle 9 protrusion simultaneously, make can play the stability when increasing the dress use, in the use for this reason, but the fixed effect of joint, stability when multiplicable device uses for this reason in the use.
Wherein, fastening nut 7's outside is seted up threadedly, fastening nut 7 cup joints with the mutual screw thread of lower part reinforced pipeline 6, spacing buckle 9 and push rod 8's position contacts each other, in the use, the phenomenon that is difficult to take out the device appears, for this reason through installing fastening nut 7, make can promote push rod 8 to inside removal, make can promote spacing buckle 9 to inside, can be with the inside of spacing buckle 9 one side skew lower part reinforced pipeline 6 for this reason in the use, can take off device lower part reinforced pipeline 6 for this reason, in the use, play the effect that conveniently dismantles and install the device.
Wherein, the upper part and the lower part of the frame main body connecting pipeline 13 are respectively provided with a lower connecting plate 14 and an upper connecting plate 22, a first fastening nut 15 passes through the lower connecting plate 14 and is fixedly sleeved in the frame main body connecting pipeline 13 by screw thread, a second fastening nut 19 passes through the upper connecting plate 22 and is fixedly sleeved on the upper part of the frame main body connecting pipeline 13, the inconvenient phenomenon occurs in the device installation process when in use, and the unstable connection phenomenon occurs at the connection part between the oil well port connecting pipeline 1 and the oil outlet pipeline 21, therefore, in the use process, one side of the first fastening nut 15 and the second fastening nut 19 passes through the lower connecting plate 14 and the upper connecting plate 22 and is fixedly connected on the lower part and the upper part of the frame main body connecting pipeline 13 by screw thread, so that the stability among the lower connecting plate 14, the frame main body connecting pipeline 13 and, meanwhile, the lower connecting plate 14, the frame body connecting pipe 13 and the upper connecting plate 22 are fixedly connected to the oil well port connecting pipe 1, the connecting port frame body 3 and the oil outlet pipe 21 respectively, so that stability among the oil well port connecting pipe 1, the connecting port frame body 3 and the oil outlet pipe 21 can be improved in the using process, stability in the using process of the device can be improved, and connection looseness is prevented.
Wherein, the second spring 16 is clamped between the frame main body connecting pipe 13 and the lower connecting plate 14, the first spring fixing rod 17 and the second spring fixing rod 18 are respectively fixed between the lower connecting plate 14 and the frame main body connecting pipe 13, the first spring fixing rod 17 and the second spring fixing rod 18 are clamped between the second spring 16, during the use process, the second spring 16 is fixedly connected between the frame main body connecting pipe 13 and the lower connecting plate 14, so that during the use process, the pushing device can move upwards under the elastic action of the second spring 16, and the second spring fixing rod 18 and the first spring fixing rod 17 are fixedly connected at the upper part and the lower part of the temporal part of the second spring 16, wherein the first spring fixing rod 17 and the second spring fixing rod 18 are clamped on the lower connecting plate 14 and the frame main body connecting pipe 13, so that the function of limiting the position of the second spring 16 can be realized during the use process, therefore, the safety and the function of elastic supporting force can be increased when the device is used.
Wherein, the first fastening nut 4 and the second fastening nut 5 respectively penetrate through the connection port frame body 3 and are fixed on the oil well port connection pipeline 1 and the oil outlet pipeline 21, the first fastening nut 4 and the second fastening nut 5 are respectively provided with four on the upper part and the lower part of the connection port frame body 3, in use, by mounting the upper and lower portions of the device connection port frame body 3 with four fastening nuts one 4 and two fastening nuts 5, respectively, wherein the first and second fastening nuts 4 and 5 can be passed through the connection port frame body 3 and fixed to the wellhead connection pipe 1 and the flowline 21, so that during use, the stability of the structure between the oil well port connecting pipeline 1 and the connecting port frame main body 3 and the oil outlet pipeline 21 can be achieved, and meanwhile, in the using process, the stability of the device in use can be improved.
The working principle is as follows: when in use, the outer part of the upper part of the oil well port connecting pipeline 1 is provided with a groove, the inner part of the groove is fixedly connected with a spring I12, a limiting rod 10 and a limiting buckle 9, the limiting rod 10 is clamped in the limiting rod movable track 11, the limiting buckle 9 can push the limiting buckle 9 to move outwards under the elastic action of the spring I12, the outer part of the limiting buckle 9 is fixedly sleeved with a lower reinforcing pipeline 6, the inner part of the lower reinforcing pipeline 6 can be clamped in the limiting buckle 9, so that the stability between the lower reinforcing pipeline 6 and the oil well port connecting pipeline 1 is increased, meanwhile, in the time process, the upper part of the oil well port connecting pipeline 1 is fixedly sleeved with a connecting port frame body 3, so that a waterproof gasket 2 is clamped between the oil well port connecting pipeline 1 and the connecting port frame body 3, therefore, the stability of the device in use can be increased in use, the oil outlet pipeline 21 is arranged on the upper portion of the connection port frame body 3 in use, the upper reinforcing pipeline 20 is arranged outside the oil outlet pipeline 21, and the fastening nuts I15 and II 19 are fixedly connected to the upper portions of the oil well port connection pipeline 1, the connection port frame body 3 and the oil outlet pipeline 21 in external fixed sleeved mode, the lower connection plate 14 and the upper connection plate 22 in use.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides a well head seals protection device, includes oil well port connecting tube (1), its characterized in that: the outer part of the upper part of the oil well port connecting pipeline (1) is movably sleeved with a waterproof gasket (2), the upper part of the oil well port connecting pipeline (1) is movably sleeved with a connecting port frame main body (3), one side of the lower part of the connecting port frame main body (3) is provided with a fastening nut I (4), the upper part of the connecting port frame main body (3) is provided with a fastening nut II (5), the outer part of the lower part of the oil well port connecting pipeline (1) is movably sleeved with a lower part reinforcing pipeline (6), the inner part of one side of the lower part reinforcing pipeline (6) is movably sleeved with a fastening nut (7), one side of the fastening nut (7) is movably sleeved with a push rod (8), one side of the push rod (8) is provided with a limit buckle (9), the upper part of one side of the limit buckle (9) is fixedly connected with a limit rod (10), the inner part of one side of, a first spring (12) is fixedly connected to one side of the limiting buckle (9), a first frame body connecting pipeline (13) is fixedly connected to one side of the connecting port frame body (3), a lower connecting plate (14) is fixedly connected to the upper portion of one side of the lower reinforcing pipeline (6), a first fastening nut (15) is movably sleeved on the inner portion of the lower connecting plate (14), a second spring (16) is fixedly connected to the inner portion of one side of the lower connecting plate (14), a first spring fixing rod (17) is fixedly connected to the inner portion of the second spring (16), a second spring fixing rod (18) is movably sleeved on the inner portion of the upper portion of the second spring (16), a second fastening nut (19) is movably sleeved on the inner portion of the upper frame body connecting pipeline (13), and an upper reinforcing pipeline (20) is installed on the upper portion, an oil outlet pipeline (21) is movably sleeved in the upper reinforcing pipeline (20), and an upper connecting plate (22) is fixedly connected to one side of the lower portion of the oil outlet pipeline (21).
2. A wellhead seal protection device, according to claim 1, characterized in that: the upper portion of oil well port connecting pipe (1) is installed with the recess, the inside of the upper portion joint in connection port frame main part (3) lower part of oil well port connecting pipe (1), waterproof gasket (2) centre gripping is between oil well port connecting pipe (1) and connection port frame main part (3).
3. A wellhead seal protection device, according to claim 1, characterized in that: the outside of fastening nut (7) is threaded, fastening nut (7) and lower part reinforcement pipe (6) are threaded and sleeved, and limiting buckle (9) and push rod (8) are in contact with each other.
4. A wellhead seal protection device, according to claim 1, characterized in that: the spring fixing rod II (18) is clamped between the frame main body connecting pipeline (13) and the lower connecting plate (14), the spring fixing rod I (17) and the spring fixing rod II (18) are respectively fixed between the lower connecting plate (14) and the frame main body connecting pipeline (13), and the spring fixing rod I (17) and the spring fixing rod II (18) are clamped in the spring II (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010692642.8A CN111852375B (en) | 2020-07-17 | 2020-07-17 | Well head and sealing protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010692642.8A CN111852375B (en) | 2020-07-17 | 2020-07-17 | Well head and sealing protection device |
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| Publication Number | Publication Date |
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| CN111852375A CN111852375A (en) | 2020-10-30 |
| CN111852375B true CN111852375B (en) | 2021-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010692642.8A Active CN111852375B (en) | 2020-07-17 | 2020-07-17 | Well head and sealing protection device |
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| CN (1) | CN111852375B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5000266A (en) * | 1989-10-06 | 1991-03-19 | Cooper Industries, Inc. | Hydraulic/torsion packoff installation tool |
| CN207296945U (en) * | 2017-07-28 | 2018-05-01 | 江苏恒鑫石化机械有限公司 | A kind of casing head being convenient for changing |
| CN207739978U (en) * | 2017-12-30 | 2018-08-17 | 江苏苏盐阀门机械有限公司 | A kind of Thelf-proof well head apparatus |
| CN208364074U (en) * | 2018-06-29 | 2019-01-11 | 四川兆虹油气田技术有限公司 | Telescopic joint inner cylinder loads and unloads tooling |
| CN109915056A (en) * | 2019-03-07 | 2019-06-21 | 江苏腾龙石化机械有限公司 | A kind of oil well head device of antiseep |
-
2020
- 2020-07-17 CN CN202010692642.8A patent/CN111852375B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5000266A (en) * | 1989-10-06 | 1991-03-19 | Cooper Industries, Inc. | Hydraulic/torsion packoff installation tool |
| CN207296945U (en) * | 2017-07-28 | 2018-05-01 | 江苏恒鑫石化机械有限公司 | A kind of casing head being convenient for changing |
| CN207739978U (en) * | 2017-12-30 | 2018-08-17 | 江苏苏盐阀门机械有限公司 | A kind of Thelf-proof well head apparatus |
| CN208364074U (en) * | 2018-06-29 | 2019-01-11 | 四川兆虹油气田技术有限公司 | Telescopic joint inner cylinder loads and unloads tooling |
| CN109915056A (en) * | 2019-03-07 | 2019-06-21 | 江苏腾龙石化机械有限公司 | A kind of oil well head device of antiseep |
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| Publication number | Publication date |
|---|---|
| CN111852375A (en) | 2020-10-30 |
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