CN113006736A - Corrosion-resistant well head production tree device with adjustable proclaim oneself type - Google Patents
Corrosion-resistant well head production tree device with adjustable proclaim oneself type Download PDFInfo
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- CN113006736A CN113006736A CN202110570305.6A CN202110570305A CN113006736A CN 113006736 A CN113006736 A CN 113006736A CN 202110570305 A CN202110570305 A CN 202110570305A CN 113006736 A CN113006736 A CN 113006736A
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- gate valve
- sealing
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- 230000007797 corrosion Effects 0.000 title claims abstract description 26
- 238000005260 corrosion Methods 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 238000007789 sealing Methods 0.000 claims abstract description 47
- 241000191291 Abies alba Species 0.000 claims abstract description 23
- 238000000605 extraction Methods 0.000 claims abstract description 7
- 239000002184 metal Substances 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 239000003921 oil Substances 0.000 description 44
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 10
- 229910002092 carbon dioxide Inorganic materials 0.000 description 5
- 239000001569 carbon dioxide Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- 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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/02—Valve arrangements for boreholes or wells in well heads
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
-
- 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
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (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)
- Geophysics (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The invention relates to the technical field of wellhead Christmas tree devices, in particular to a self-sealing adjustable corrosion-resistant wellhead Christmas tree device which comprises an oil extraction base, wherein a large cross is fixedly connected to the upper end of the oil extraction base, flanges are arranged on two sides and the upper end of the large cross, a first gate valve and an oil drainage gate valve are fixedly connected to the flanges on two sides of the large cross respectively, a first safety valve and an oil drainage safety valve are arranged on one side, opposite to each other, of the first gate valve and the oil drainage gate valve respectively, a plug is fixedly arranged on the other side of the first safety valve, an oil drainage pipe is fixedly arranged on the other side of the oil drainage safety valve, and an oil drainage pressure gauge is fixedly arranged on the oil drainage gate valve.
Description
Technical Field
The invention relates to the technical field of wellhead Christmas tree devices, in particular to a self-sealing adjustable corrosion-resistant wellhead Christmas tree device.
Background
The wellhead tree device is an assembly located at the opening to the top end of the well, including valves for measurement and maintenance, safety systems and a series of monitoring instruments. The wellhead tree device connects production tubing and production tubing from downhole while acting as an important barrier to isolate the top of the well from the external environment. It includes a number of valves that can be used to regulate or prevent the flooding of the produced crude oil vapors, natural gas and liquids from the well. The wellhead tree device is connected to the production manifold system by a subsea conduit.
When the traditional wellhead Christmas tree device is used, a self-sealing structure is generally lacked, so that a valve needs to be manually closed after the work is finished; if need stop the well when changing the choke valve and just can change, generally need 3 to 4 hours, will influence oil well oil production volume, also increased the risk of oil well electric submersible pump restart well electric submersible pump short circuit burn pump simultaneously, and the pipeline can present even corruption in relief valve outlet passage after using for a long time, the inside corruption of different degrees that also can appear of solid inside, its reason is the carbon dioxide that the temperature influence leads to generally corrodes, therefore how to carry out the problem that proper heat preservation adiabatic measure also needs to be solved to the pipeline.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a self-sealing adjustable corrosion-resistant wellhead Christmas tree device, which solves the problems that the traditional wellhead Christmas tree device cannot be automatically sealed, is inconvenient to adjust and is seriously corroded.
In order to achieve the purpose, the invention is realized by the following technical scheme: a self-sealing adjustable corrosion-resistant wellhead Christmas tree device comprises an oil extraction base, wherein a large cross joint is fixedly connected to the upper end of the oil extraction base, two sides and the upper end of the large cross joint are provided with flange plates, the flange plates on the two sides of the large cross joint are respectively and fixedly connected with a first gate valve and an oil drainage gate valve, one side of the first gate valve, opposite to the oil drainage gate valve, is provided with a first safety valve and an oil drainage safety valve, the other side of the first safety valve is fixedly provided with a plug, the other side of the oil drainage safety valve is fixedly provided with an oil drainage pipe, and an oil drainage pressure gauge is fixedly arranged on the;
the improved four-way valve is characterized in that a vertical pipe body is fixedly connected to the upper end of the large four-way valve, a branch pipe is fixedly arranged on one side of the vertical pipe body, a vertical pipe gate valve is fixedly connected to the upper end of the vertical pipe body, a small four-way valve is fixedly connected to the upper end of the vertical pipe gate valve, a second gate valve and a third gate valve are fixedly connected to two sides of the small four-way valve respectively, a second safety valve and a third safety valve are arranged on one side, back to back, of the second gate valve and the third gate valve respectively, a first adjustable throttle valve is fixedly arranged on the other side of the second safety valve, a second adjustable throttle valve is fixedly arranged on the other side of the third safety.
Preferably, the inner end of the vertical pipe body is fixedly provided with an inner cavity, the inner cavity is fixedly provided with a limiting pipe close to the branch pipe, an oil outlet is fixedly arranged on the limiting pipe, a sealing pressure plate is fixedly arranged at the inner end of the branch pipe, one side of the sealing pressure plate, which is far away from the vertical pipe body, is fixedly connected with a flange cover through bolts, a sealing gasket is fixedly arranged at the inner end of the sealing pressure plate, a sealing ring is arranged at the lower end of the sealing gasket, a metal ring is fixedly connected at the inner end of the sealing ring, a connecting rod is fixedly connected between the inner walls of the opposite sides of the metal ring, an adjusting connecting rod is movably sleeved on the outer wall of the connecting rod, the lower end of the adjusting connecting rod is fixedly connected with a threaded buckle, the thread buckle is characterized in that a connecting stud is sleeved in the inner thread of the thread buckle, a locking nut is sleeved on the outer wall of one side, away from the thread buckle, of the connecting stud in a threaded manner, and a buckle disc is fixedly connected to one end, away from the thread buckle, of the connecting stud.
Preferably, the diameter of the buckling disc is larger than that of the oil outlet.
Preferably, a sealing cover is fixedly arranged at the upper end of the first adjustable throttle valve, an adjusting stud is sleeved on the sealing cover in a threaded manner, a plug is fixedly connected to the lower end of the adjusting stud, a bayonet is fixedly arranged on the inner wall of the lower end of the first adjustable throttle valve, the plug is clamped and arranged with the bayonet, and the internal structure of the second adjustable throttle valve is the same as that of the first adjustable throttle valve.
Preferably, the riser body comprises an inner sleeve and an outer sleeve, and a heat-insulating coating is filled between the inner sleeve and the outer sleeve.
Preferably, both ends of the first safety valve are fixedly connected with the first gate valve and the plug through flanges, and both ends of the oil drainage safety valve are fixedly connected with the oil drainage gate valve and the oil drainage pipe through flanges.
Preferably, both ends of the second safety valve are fixedly connected with the second gate valve and the first adjustable throttle valve through flanges, and both ends of the third safety valve are fixedly connected with the third gate valve and the second adjustable throttle valve through flanges.
Preferably, the upper end of the small four-way is fixedly connected with a total pressure gauge.
The working principle is as follows: this corrosion-resistant well head production tree device with adjustable proclaim oneself type uses, under the pressure effect when producing oil, fluid backs up the buckle dish and upwards flows, after oil recovery finishes, fluid falls back simultaneously because gravity factor, the buckle dish can the downstream buckle oil-out, thereby accomplish the proclaim oneself of device, when producing oil, it drives the end cap and goes up and down to make it drive through rotating the regulation double-screw bolt, thereby can adjust the reservation space of relative bayonet socket and adjust the oil output, simple province trouble, close the choke valve that second or third relief valve can change corresponding one side when needing to change adjustable throttle valve, and need not close whole device passageway, simple province trouble, and because the double protection of the inside and outside sheathed tube of body when the device uses, cooperation heat preservation coating maintains pipeline inside temperature stable, can effectively avoid coming from the corruption of carbon dioxide, protection device.
The invention provides a self-sealing adjustable corrosion-resistant wellhead Christmas tree device. The method has the following beneficial effects:
1. the invention provides a self-sealing adjustable corrosion-resistant wellhead Christmas tree device, which is characterized in that a buckle disc and a limiting pipe are arranged, so that the buckle disc can realize automatic opening and blocking effects under the action of oil inlet and outlet pressure and gravity, the operation of related personnel is reduced, and the self-sealing adjustable corrosion-resistant wellhead Christmas tree device is very convenient to use.
2. The invention provides a self-sealing adjustable corrosion-resistant wellhead Christmas tree device, which is characterized in that an adjusting stud is arranged to rotate to drive a plug to ascend or descend, so that the gap between the plug and a bayonet is adjusted, the oil output is adjusted, a second safety valve and a third safety valve are matched to conveniently perform corresponding replacement operation on a first adjustable throttle valve or a second adjustable throttle valve, one side is replaced at a time, the output of produced oil is not influenced, the time is saved, and the efficiency is improved.
3. The invention provides a self-sealing adjustable corrosion-resistant wellhead Christmas tree device, which is characterized in that an inner sleeve and an outer sleeve are arranged to form a double-layer pipe body, and a heat-insulating coating is filled between the inner sleeve and the outer sleeve, so that the temperature inside the inner sleeve is effectively maintained to be stable, and the corrosion damage of carbon dioxide to the pipe body is reduced.
4. The self-sealing adjustable corrosion-resistant wellhead Christmas tree device provided by the invention has the advantages of stable structure, corrosion resistance, automatic opening and closing, simple and trouble-saving replacement of the throttle valve, capability of automatically adjusting the oil yield, time saving and no influence on the oil yield.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a schematic view of the internal structure of the riser body of the present invention;
FIG. 3 is a perspective view of a partial structure of the metal ring of the present invention;
FIG. 4 is a schematic view of the internal structure of the first adjustable throttle valve of the present invention;
FIG. 5 is a schematic view of a riser body hierarchy of the present invention.
Wherein, 1, an oil extraction base; 2. a large cross; 3. a flange plate; 4. an outer sleeve; 5. heat-insulating paint; 6. an oil discharge pressure gauge; 7. a first gate valve; 8. an oil drain gate valve; 9. a first safety valve; 10. an oil release safety valve; 11. plugging with a thread; 12. an oil drain pipe; 13. a riser body; 1301. an inner cavity; 1302. a limiting tube; 1303. an oil outlet; 14. a branch pipe; 1401. a flange cover; 1402. sealing the pressure plate; 1403. a gasket; 1404. a seal ring; 1405. a metal ring; 1406. a connecting rod; 1407. adjusting the connecting rod; 1408. screwing; 1409. connecting a stud; 1410. locking the nut; 1411. buckling a disc; 15. a riser gate valve; 16. a small cross; 17. a total pressure gauge; 18. a first orifice; 19. a second orifice; 20. a second gate valve; 21. a third gate valve; 22. an inner sleeve; 23. a second adjustable throttle valve; 24. a second relief valve; 25. a third relief valve; 26. a first adjustable throttle valve; 2601. a sealing cover; 2602. adjusting the stud; 2603. a plug; 2604. and (4) a bayonet.
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.
Example (b):
as shown in fig. 1-5, an embodiment of the invention provides a self-sealing adjustable corrosion-resistant wellhead christmas tree device, which comprises a christmas base 1, wherein a large cross 2 is fixedly connected to the upper end of the christmas base 1, flanges 3 are respectively arranged on two sides and the upper end of the large cross 2, the flanges 3 on two sides of the large cross 2 are respectively and fixedly connected with a first gate valve 7 and an oil drainage gate valve 8, a first safety valve 9 and an oil drainage safety valve 10 are respectively arranged on one side of the first gate valve 7 opposite to the oil drainage gate valve 8, a plug 11 is fixedly arranged on the other side of the first safety valve 9, an oil drainage pipe 12 is fixedly arranged on the other side of the oil drainage safety valve 10, and an oil drainage pressure gauge.
Big cross 2 upper end fixedly connected with riser body 13, riser body 13 one side is fixed and is provided with bleeder 14, riser body 13 upper end fixedly connected with riser gate valve 15, riser gate valve 15 upper end fixedly connected with little cross 16, little cross 16 both sides are fixedly connected with second gate valve 20 and third gate valve 21 respectively, second gate valve 20 and third gate valve 21 back of the body one side of carrying on the back mutually are provided with second relief valve 24 and third relief valve 25 respectively, second relief valve 24 opposite side is fixed and is provided with first adjustable choke valve 26, third relief valve 25 opposite side is fixed and is provided with second adjustable choke valve 23, first adjustable choke valve 26 and second adjustable choke valve 23 lower extreme are respectively through 3 fixedly connected with first throttle mouth 18 and second throttle mouth 19 of ring flange.
An inner cavity 1301 is fixedly arranged at the inner end of the stand pipe body 13, a limiting pipe 1302 is fixedly arranged at the position, close to the branch pipe 14, of the inner cavity 1301, an oil outlet 1303 is fixedly formed in the limiting pipe 1302, a sealing pressure plate 1402 is fixedly arranged at the inner end of the branch pipe 14, one side, far away from the stand pipe body 13, of the sealing pressure plate 1402 is fixedly connected with a flange cover 1401 through bolts, a sealing gasket 1403 is fixedly arranged at the inner end of the sealing pressure plate 1402, a sealing ring 1404 is arranged at the lower end of the sealing gasket 1403, a metal ring 1405 is fixedly connected at the inner end of the sealing ring 1404, a connecting rod 1406 is fixedly connected between the inner walls of the opposite sides of the metal ring 1405, an adjusting connecting rod 1407 is movably sleeved on the outer wall of the connecting rod 1406, a thread buckle 1408 is fixedly connected with a thread buckle 1408 at the lower end of the adjusting, the diameter of the buckling disc 1411 is larger than that of the oil outlet 1303, the upper end of the first adjustable throttle valve 26 is fixedly provided with a sealing cover 2601, the sealing cover 2601 is in threaded sleeve connection with an adjusting stud 2602, the lower end of the adjusting stud 2602 is fixedly connected with a plug 2603, the inner wall of the lower end of the first adjustable throttle valve 26 is fixedly provided with a bayonet 2604, the plug 2603 is clamped and arranged with the bayonet 2604, the internal structure of the second adjustable throttle valve 23 is the same as that of the first adjustable throttle valve 26, the vertical pipe body 13 comprises an inner sleeve 22 and an outer sleeve 4, a heat-insulating coating 5 is filled between the inner sleeve 22 and the outer sleeve 4, double protection is carried out through the inner sleeve 22 and the outer sleeve 4, meanwhile, the heat-insulating coating 5 is used for temperature protection in the pipe to ensure that the temperature is in a stable state, thereby preventing carbon dioxide from corrosion, two ends of the first safety valve 9 are fixedly connected with the first gate valve 7, the two ends of the second safety valve 24 are fixedly connected with the second gate valve 20 and the first adjustable throttle valve 26 through the flange 3, the two ends of the third safety valve 25 are fixedly connected with the third gate valve 21 and the second adjustable throttle valve 23 through the flange 3, and the upper end of the small cross 16 is fixedly connected with the total pressure gauge 17.
When the self-sealing adjustable corrosion-resistant wellhead Christmas tree device is used, oil liquid pushes the buckling disc 1411 to flow upwards under the action of pressure when oil is produced, the oil liquid falls back and the buckling disc 1411 moves downwards to buckle the oil outlet 1303 due to gravity factors when the oil is produced, so that the self-sealing of the device is completed, when the oil is produced, the adjusting stud 2602 is rotated to drive the plug 2603 to lift, the reserved gap relative to the bayonet 2604 can be adjusted to adjust the oil production amount, the trouble is simply saved, when the adjustable throttle valve needs to be replaced, the throttle valve on the corresponding side can be replaced by closing the second safety valve 24 or the third safety valve 25 without closing the whole device channel, the trouble is simply saved, and when the device is used, due to the double protection of the inner sleeve 22 and the outer sleeve 4 of the pipe body, the temperature inside of the pipeline is kept stable by matching heat-insulating paint, so that the corrosion from carbon dioxide can be effectively avoided, and a protection device.
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 (7)
1. The utility model provides a corrosion-resistant well head christmas tree device with adjustable proclaim oneself type, includes production base (1), its characterized in that: the oil extraction device is characterized in that a large cross joint (2) is fixedly connected to the upper end of the oil extraction base (1), flange plates (3) are arranged on two sides and the upper end of the large cross joint (2), a first gate valve (7) and an oil drainage gate valve (8) are respectively and fixedly connected to the flange plates (3) on two sides of the large cross joint (2), a first safety valve (9) and an oil drainage safety valve (10) are respectively arranged on one opposite side of the first gate valve (7) and the oil drainage gate valve (8), a plug (11) is fixedly arranged on the other side of the first safety valve (9), an oil drainage pipe (12) is fixedly arranged on the other side of the oil drainage safety valve (10), and an oil drainage pressure gauge (6) is fixedly arranged; the upper end of the large cross joint (2) is fixedly connected with a vertical pipe body (13), one side of the vertical pipe body (13) is fixedly provided with a branch pipe (14), the upper end of the vertical pipe body (13) is fixedly connected with a vertical pipe gate valve (15), the upper end of the vertical pipe gate valve (15) is fixedly connected with a small cross joint (16), two sides of the small cross joint (16) are respectively and fixedly connected with a second gate valve (20) and a third gate valve (21), one sides of the second gate valve (20) and the third gate valve (21) which are opposite to each other are respectively provided with a second safety valve (24) and a third safety valve (25), the other side of the second safety valve (24) is fixedly provided with a first adjustable throttle valve (26), the other side of the third safety valve (25) is fixedly provided with a second adjustable throttle valve (23), and the lower ends of the first adjustable throttle valve (26) and the second adjustable throttle valve (23) are respectively and fixedly, an inner cavity (1301) is fixedly arranged at the inner end of the stand pipe body (13), a limiting pipe (1302) is fixedly arranged at the position, close to the branch pipe (14), of the inner cavity (1301), an oil outlet (1303) is fixedly formed in the limiting pipe (1302), a sealing pressure plate (1402) is fixedly arranged at the inner end of the branch pipe (14), one side, far away from the stand pipe body (13), of the sealing pressure plate (1402) is fixedly connected with a flange cover (1401) through bolts, a sealing gasket (1403) is fixedly arranged at the inner end of the sealing gasket (1403), a sealing ring (1404) is arranged at the lower end of the sealing gasket (1403), a metal ring (1405) is fixedly connected at the inner end of the sealing ring (1404), a connecting rod (1406) is fixedly connected between the inner walls of the opposite sides of the metal ring (1405), an adjusting connecting rod (1407) is movably sleeved on, threaded buckle (1408) internal thread has cup jointed connecting stud (1409), on keeping away from threaded buckle (1408) one side outer wall connecting stud (1409) screw cup jointed lock nut (1410), threaded buckle (1408) one end fixedly connected with buckle dish (1411) are kept away from in connecting stud (1409).
2. The self-sealing adjustable corrosion-resistant wellhead Christmas tree device of claim 1, wherein: the diameter of the buckling disc (1411) is larger than that of the oil outlet (1303).
3. The self-sealing adjustable corrosion-resistant wellhead Christmas tree device of claim 1, wherein: the fixed sealed lid (2601) that is provided with in first adjustable choke valve (26) upper end, screw sleeve has adjusted double-screw bolt (2602) on sealed lid (2601), adjust double-screw bolt (2602) lower extreme fixedly connected with end cap (2603), first adjustable choke valve (26) lower extreme inner wall is fixed and is provided with bayonet socket (2604), end cap (2603) card and bayonet socket (2604) setting, second adjustable choke valve (23) inner structure is the same with first adjustable choke valve (26).
4. The self-sealing adjustable corrosion-resistant wellhead Christmas tree device of claim 1, wherein: the vertical pipe body (13) comprises an inner sleeve (22) and an outer sleeve (4), and a heat-insulating coating (5) is filled between the inner sleeve (22) and the outer sleeve (4).
5. The self-sealing adjustable corrosion-resistant wellhead Christmas tree device of claim 1, wherein: first relief valve (9) both ends all are through ring flange (3) and first gate valve (7) and plug (11) fixed connection, draining relief valve (10) both ends all are through ring flange (3) and draining gate valve (8) and draining pipe (12) fixed connection.
6. The self-sealing adjustable corrosion-resistant wellhead Christmas tree device of claim 1, wherein: the two ends of the second safety valve (24) are fixedly connected with the second gate valve (20) and the first adjustable throttle valve (26) through a flange plate (3), and the two ends of the third safety valve (25) are fixedly connected with the third gate valve (21) and the second adjustable throttle valve (23) through the flange plate (3).
7. The self-sealing adjustable corrosion-resistant wellhead Christmas tree device of claim 1, wherein: the upper end of the small four-way joint (16) is fixedly connected with a total pressure gauge (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110570305.6A CN113006736A (en) | 2021-05-25 | 2021-05-25 | Corrosion-resistant well head production tree device with adjustable proclaim oneself type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110570305.6A CN113006736A (en) | 2021-05-25 | 2021-05-25 | Corrosion-resistant well head production tree device with adjustable proclaim oneself type |
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| Publication Number | Publication Date |
|---|---|
| CN113006736A true CN113006736A (en) | 2021-06-22 |
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ID=76380824
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110570305.6A Pending CN113006736A (en) | 2021-05-25 | 2021-05-25 | Corrosion-resistant well head production tree device with adjustable proclaim oneself type |
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| CN (1) | CN113006736A (en) |
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Application publication date: 20210622 |