CN219528971U - 175MPa high-pressure sulfur-resistant oil production wellhead oil pipe head structure and oil production wellhead device - Google Patents
175MPa high-pressure sulfur-resistant oil production wellhead oil pipe head structure and oil production wellhead device Download PDFInfo
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- CN219528971U CN219528971U CN202320840771.6U CN202320840771U CN219528971U CN 219528971 U CN219528971 U CN 219528971U CN 202320840771 U CN202320840771 U CN 202320840771U CN 219528971 U CN219528971 U CN 219528971U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
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Abstract
The utility model provides a 175MPa high-pressure sulfur-resistant oil production wellhead oil pipe head structure and an oil production wellhead device, wherein the oil pipe head body is provided with a through hole in the vertical direction, the bottom of the through hole is provided with a casing head connecting port correspondingly, the inner wall of the casing head connecting port is provided with a first sealing ring groove, and a second sealing ring groove is arranged above the first sealing ring groove; the pressure enhancement type sealing device is arranged in the first sealing ring groove and comprises an upper metal sealing ring and a lower metal sealing ring, and the extending direction of the joint surface of the upper metal sealing ring and the lower metal sealing ring is inclined to the vertical direction; the third sealing ring is arranged in the second sealing ring groove, a metal framework is arranged inside the third sealing ring, and a sealing reinforcing layer is coated on the outer layer of the third sealing ring. Has the advantages of high pressure resistance, sulfide resistance and long service life.
Description
Technical Field
The utility model relates to the field of gas production wellhead equipment, in particular to a 175MPa high-pressure sulfur-resistant gas production wellhead oil pipe head structure and a gas production wellhead device.
Background
The gas production wellhead device is used for switching, controlling and guiding air flow, hanging an oil pipe, sealing an annular space between a production sleeve and the oil pipe, creating testing and downhole operation conditions, is pressure-bearing equipment for controlling wellhead pressure and natural gas flow of a self-injection well, and is an important ground facility for controlling production of the gas well. With the rapid increase of natural gas energy demands and the improvement of gas production drilling technology level in China, a plurality of industrial gas fields with exploitation values are sequentially drilled in deep wells, for example, gas wells in Sichuan and Xinjiang areas are greatly provided with gas production wellhead devices of 105MPa and 140 MPa. The gas production wellhead device is in contact with corrosive media such as sulfide for a long time, and the bearing capacity of the gas production wellhead device is continuously reduced along with the corrosion growth of time, so that the 140 MPa-level gas production wellhead device cannot be used in a 140MPa pressure environment for a long time and can only be used in a rated working pressure environment which is lower than that specified in design. The requirement of 140MPa and above pressure wellhead is met along with the increase of drilling depth, so that the gas wellhead device with the rated working pressure of 175MPa and high sulfur resistance is required for ensuring production safety, the requirement of long-term use in the environment with the pressure of 140MPa and above and high sulfur content is met, and leakage is prevented from occurring, so that blowout out-of-control accidents are caused.
The sealing structure for connecting the tubing head and the sleeve hanger is particularly required to be reinforced and designed based on the requirements, and the prior application number is as follows: a 175MPa ultra-high pressure fracturing wellhead device is disclosed in cn202122286387. X. The device adopts a first sealing element formed by rubber materials and a second sealing element formed by metal materials, and adopts the principle of double sealing so as to improve the sealing performance, but a common double sealing structure cannot be suitable for the working environment with high sulfide content in gas. The long-term use can lead to the corrosion of the sealing element, thereby leading to the reduction of bearing capacity, and finally leading to leakage and further leading to blowout out-of-control accidents.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model provides a 175MPa high-pressure sulfur-resistant oil production wellhead oil pipe head structure and a 175MPa high-pressure sulfur-resistant oil production wellhead device, has the advantages of high pressure resistance, sulfide resistance and long service life.
In order to achieve the above object, the present utility model is realized by the following technical scheme: a 175MPa high pressure sulfur resistant production wellhead tubing head structure comprising: the oil pipe head comprises an oil pipe head body, wherein a perforation in the vertical direction is arranged on the oil pipe head body, a casing head connecting port is arranged at the bottom of the corresponding perforation, a first sealing ring groove is arranged on the inner wall of the casing head connecting port, and a second sealing ring groove is arranged above the first sealing ring groove;
the pressure enhancement type sealing device is arranged in the first sealing ring groove and comprises an upper metal sealing ring and a lower metal sealing ring, and the extending direction of the joint surface of the upper metal sealing ring and the lower metal sealing ring is inclined to the vertical direction;
the third sealing ring is arranged in the second sealing ring groove, a metal framework is arranged inside the third sealing ring, and a sealing reinforcing layer is coated on the outer layer of the third sealing ring.
In the device, the 175MPa high-pressure sulfur-resistant wellhead oil pipe head structure is used for being connected with a sleeve hanger, a sleeve part is arranged in a sleeve head connecting port, wherein the outer ring of a lower metal sealing ring is tightly attached to the outer ring of a first sealing ring groove, the inner ring of the lower metal sealing ring is tightly contacted with the outer wall of an external sleeve, and the upper metal sealing ring and the lower metal sealing ring are tightly connected with the sleeve hanger through a bolt nut on a flange structure at the lower end of an oil pipe head body, so that the upper metal sealing ring and the lower metal sealing ring are mutually axially extruded. And the secondary sealing structure is formed by combining the pressure enhancement type sealing device and the third sealing ring, so that the sealing performance requirement of the gas production wellhead device under the test pressure of 262.5MPa can be met. Specifically, the upper metal sealing ring and the lower metal sealing ring are made of stainless steel. Specifically, the material of seal enhancement layer is FKM material, and the cladding promotes sealing performance on the metal skeleton of third sealing washer, and the inside metal skeleton of third sealing washer can promote the rigidity of third sealing washer. Thereby being capable of adapting to the working environment with high sulfide content. In conclusion, the 175MPa high-pressure sulfur-resistant production wellhead oil pipe head structure has the advantages of high-pressure resistance and sulfide resistance and long service life.
Further, the 175MPa high-pressure sulfur-resistant wellhead tubing head structure of the gas production well, the pressure enhancement type sealing device further comprises a pressure ring, the pressure ring is arranged at the lower end of the lower metal sealing ring, the lower end face of the lower metal sealing ring is attached to the upper end face of the pressure ring, and a groove part which is matched with the pressure ring is arranged at the casing head connecting port corresponding to the lower end of the first sealing ring groove. As a preferred embodiment of the present utility model, the compression ring is used to axially compress the lower metal seal ring so as to increase the seal between the upper metal seal ring and the lower metal seal ring.
Further, in the 175MPa high-pressure sulfur-resistant wellhead oil pipe head structure, a pair of oil perforations are formed in two sides of the oil pipe head body, corresponding to the side wall of the second sealing ring groove, of the oil perforation, a plug and a grease injection valve are respectively arranged at the outer ends of the oil perforations, and an annular groove is formed in the outer ring of the third sealing ring. In the preferred embodiment of the utility model, the stopper is removed during operation, 7903 sealant is placed in the grease gun and connected to the grease valve fitting via a hose. The sealing grease is then injected while the opposite grease perforation is observed until the orifice has sealing grease spilled. And installing and screwing the plug, and continuing to inject grease until the rated working pressure or 80% of the extrusion strength of the surface sleeve are reached, and taking one of the two values. Thereby ensuring the tightness of the third sealing ring.
Furthermore, in the 175MPa high-pressure sulfur-resistant wellhead oil pipe head structure of the gas production well, the inner wall of the perforation is attached with the anticorrosive paint. As a preferable scheme of the utility model, the specific sprayed molybdenum disulfide corrosion-resistant layer can ensure that the whole gas production wellhead device has higher hydrogen sulfide corrosion resistance.
The utility model provides a gas production wellhead device, includes foretell a 175MPa high pressure sulfur resistant gas production wellhead tubing head structure, still includes: the bottom of the gas production tree is provided with a connecting flange which is connected with the upper end of the oil pipe head body, the bottom of the gas production tree is provided with an oil pipe hanger, and the oil pipe hanger is inserted into the perforation;
the jackscrew, the jackscrew wears to establish on the tubing head body, the jackscrew front end extends into in the perforation, the jackscrew front end with tubing hanger outer wall conflict is connected, corresponds the jackscrew, be equipped with the jackscrew perforation on the tubing head body. As a preferable scheme of the utility model, the jackscrew is used for limiting and locking the oil pipe hanger.
Further, the gas production wellhead device, the gas production tree still include the cross connector, the cross connector sets up in flange top, connect gradually between flange and the cross connector and be equipped with manual flat valve and hydraulic pressure relief valve. As a preferable scheme of the utility model, the hydraulic safety valve is arranged to improve the safety of the gas production wellhead device.
Further, according to the gas production wellhead device, the upper end of the four-way connector is connected with the sulfur-proof and earthquake-proof pressure gauge with double scales, and a manual flat valve is arranged between the sulfur-proof and earthquake-proof pressure gauge with double scales and the four-way connector. As a preferable scheme of the utility model, the double-scale sulfur-proof and shock-proof pressure gauge can adapt to the use environment with high pressure and high sulfur content.
Further, the gas production wellhead device further comprises square right-angle stop valves, wherein the square right-angle stop valves are arranged on two sides of the tubing head body and the four-way connector, and a pair of manual flat valves are arranged between the square right-angle stop valves and the four-way connector. As a preferable scheme of the utility model, the square right-angle stop valve is used for controlling and replacing the pressure gauge. When the handle is turned left to be turned on and turned right to be turned off, the valve is closed, the air passage is cut off, then the wire pressure screw is unscrewed, residual air is discharged, and then the pressure gauge is disassembled. When the handle is operated, the force is not excessively applied so as not to be damaged.
Further, the gas production wellhead device further comprises an instrument flange, wherein the instrument flange is arranged between the tubing head body and a pair of manual flat valves on one side of the four-way connector.
Further, the manual flat valve comprises a valve rod and an adjusting hand wheel, a first bevel gear is arranged on the valve rod, a second bevel gear is arranged on the adjusting hand wheel, the first bevel gear is connected with the second bevel gear in a meshed mode, and the diameter of the first bevel gear is larger than that of the second bevel gear. As a preferable scheme of the utility model, compared with the condition that the adjusting hand wheel is directly arranged on the valve rod, the moment when an operator switches is reduced.
The technical scheme can be seen that the utility model has the following beneficial effects:
1. the utility model provides a 175MPa high-pressure sulfur-resistant oil pipe head structure of a gas production wellhead, which has the advantages of high-pressure resistance, sulfide resistance and long service life.
2. The utility model provides a gas production wellhead device, wherein a manual flat valve is directly arranged on a valve rod relative to an adjusting hand wheel, so that moment when an operator switches is reduced.
Drawings
FIG. 1 is a schematic plan view of a gas production wellhead assembly according to the present utility model;
FIG. 2 is a schematic plan view of a 175MPa high pressure sulfur-resistant wellhead tubing head structure according to the present utility model;
fig. 3 is a schematic structural view of the manual flat valve according to embodiment 3;
fig. 4 is a partial enlarged view of the area of circle a in fig. 3.
In the figure: 1-a tubing head body; 10-perforating; 101-a casing head connection port; 102-a first seal ring groove; 103-a second seal ring groove; 104-grease perforation; 11-plugs; 12-a grease injection valve; 13-jackscrew perforation;
2-pressure-enhanced sealing means; 21-upper metal sealing rings; 22-lower metal seal ring; 23-a compression ring;
3-a third sealing ring; 31-an annular groove;
4-gas production tree; 41-connecting flanges; 42-tubing hanger; a 43-four-way connector; 44-manual plate valve; 441-valve stem; 442-adjusting handwheels; 443-a first bevel gear; 444-second bevel gear; 445-valve body; 446—a valve cover; 4461-filler; 4462-gland; 447-stent; 448-sleeve portion; 45-a hydraulic safety valve; 46-a double-scale sulfur-proof and shock-proof pressure gauge; 47-square right-angle stop valve; 48-meter flange; 5-jackscrew.
Detailed Description
Example 1
A 175MPa high pressure sulfur tolerant production wellhead tubing head structure as shown in connection with fig. 1 and 2 comprising:
the oil pipe head comprises an oil pipe head body 1, wherein a through hole 10 in the vertical direction is formed in the oil pipe head body 1, a casing head connecting port 101 is formed in the bottom of the through hole 10 correspondingly, a first sealing ring groove 102 is formed in the inner wall of the casing head connecting port 101, and a second sealing ring groove 103 is formed above the first sealing ring groove 102;
a pressure-enhanced sealing device 2, wherein the pressure-enhanced sealing device 2 is arranged in the first sealing ring groove 102, the pressure-enhanced sealing device 2 comprises an upper metal sealing ring 21 and a lower metal sealing ring 22, and the extending direction of the joint surfaces of the upper metal sealing ring 21 and the lower metal sealing ring 22 is inclined to the vertical direction;
the third sealing ring 3, the third sealing ring 3 sets up in the second sealing ring groove 103, the inside metal skeleton that is of third sealing ring 3, the cladding of third sealing ring 3 outward layer has sealed enhancement layer.
The 175MPa high-pressure sulfur-resistant gas production wellhead tubing head structure is used for being connected with a casing hanger, a casing part is arranged in a casing head connector 101, and the specific operation of the 175MPa high-pressure sulfur-resistant gas production wellhead tubing head structure when being connected with the casing hanger is as follows: the tubing head body 1 is hung above the sleeve hanger and slowly descends, so that the third sealing ring 3 and the pressure-enhanced sealing device 2 are prevented from being damaged. On the premise of ensuring that the gaps on the periphery are equal, the bolts are uniformly screwed by the cross opposite sides of the knocking spanner, so that the gaps between the connecting surfaces are ensured to be equal. The outer ring of the lower metal sealing ring 22 is tightly attached to the outer ring of the first sealing ring groove 102, the inner ring of the lower metal sealing ring 22 is tightly contacted with the outer wall of the external sleeve, and the bolt and the nut on the flange structure at the lower end of the oil pipe head body 1 are fixedly connected with the sleeve hanger, so that the upper metal sealing ring 21 and the lower metal sealing ring 22 are mutually axially extruded, and as the extending direction of the attaching surfaces of the upper metal sealing ring 21 and the lower metal sealing ring 22 is inclined to the vertical direction, a stack of the upper metal sealing ring 21 and the lower metal sealing ring 22 are tightly attached, the attaching tightness of the upper metal sealing ring 21 and the lower metal sealing ring 22 is in direct proportion to the axial pressure received by the lower metal sealing ring 22, the tightness between the sleeve head connecting port 101 and the external sleeve can be ensured, and the high-pressure working environment can be adapted. And the pressure enhancement type sealing device 2 and the third sealing ring 3 are combined to form a secondary sealing structure, so that the sealing performance requirement of the gas production wellhead device under the test pressure of 262.5MPa can be met. Specifically, the upper metal seal ring 21 and the lower metal seal ring 22 are made of stainless steel. Specifically, the material of seal enhancement layer is FKM material, and the cladding promotes sealing performance on the metal skeleton of third sealing washer 3, and the inside metal skeleton of third sealing washer 3 can promote the rigidity of third sealing washer 3. Thereby suggesting sealability, durability, and sulfur resistance properties.
In this embodiment, the pressure-enhanced sealing device 2 further includes a pressure ring 23, the pressure ring 23 is disposed at the lower end of the lower metal sealing ring 22, the lower end surface of the lower metal sealing ring 22 is attached to the upper end surface of the pressure ring 23, and the casing head connection port 101 is provided with a groove portion corresponding to the pressure ring 23 corresponding to the lower end of the first sealing ring groove 102.
The pressure ring 23 is used to axially press the lower metal seal ring 22 to increase the seal between the upper metal seal ring 21 and the lower metal seal ring 22.
In this embodiment, a pair of grease perforations 104 are provided on two sides of the tubing head body 1 corresponding to the side wall of the second sealing ring groove 103, a pair of plugs 11 and grease injection valves 12 are provided at outer ends of the grease perforations 104, and an annular groove 31 is provided on an outer ring of the third sealing ring 3.
In operation, the stopper 11 is removed, 7903 sealant is placed in the grease gun and connected to the nipple of the grease valve 12 via a hose. The sealing grease is then injected while the opposite grease perforation 104 is observed until the orifice has overflowed with sealing grease. And installing and tightening the plug 11, and continuing to inject grease until the rated working pressure or 80% of the extrusion resistance of the surface sleeve are reached, and taking one of the two values. Thereby ensuring the tightness of the third seal ring 3.
In this embodiment, anticorrosive paint is attached to the inner wall of the through hole 10.
The specific molybdenum disulfide corrosion-resistant layer is sprayed, so that the whole gas production wellhead device has higher hydrogen sulfide corrosion resistance.
Example 2
A gas production wellhead assembly as described in connection with fig. 1 and 2, comprising a gas production wellhead assembly as described in embodiment 1, comprising: the bottom of the gas production tree 4 is provided with a connecting flange 41, the connecting flange 41 is connected with the upper end of the oil pipe head body 1, the bottom of the gas production tree 4 is provided with an oil pipe hanger 42, and the oil pipe hanger 42 is inserted into the perforation 10;
the jackscrew 5, jackscrew 5 wears to establish on the tubing head body 1, the jackscrew 5 front end extends into in the perforation 10, jackscrew 5 front end with tubing hanger 42 outer wall conflict is connected, corresponds jackscrew 5, be equipped with the jackscrew perforation on the tubing head body 1.
In the embodiment, all runner holes of a gas production wellhead device are sprayed with a molybdenum disulfide corrosion-resistant layer.
The jackscrew 5 is used for limiting and locking the oil pipe hanger 42. During drilling, the head of the jackscrew 5 should be retracted to the bottom so as to avoid unnecessary collision of the drill rod and the joint.
In this embodiment, the gas production tree 4 further includes a four-way connector 43, the four-way connector 43 is disposed above the connection flange 41, and a manual flat valve 44 and a hydraulic safety valve 45 are sequentially connected between the connection flange 41 and the four-way connector 43.
The provision of a hydraulic safety valve 45 improves the safety of the one gas production wellhead.
In this embodiment, the upper end of the four-way connector 43 is connected with a dual-scale sulfur-proof and shock-proof pressure gauge 46, and a manual flat valve 44 is arranged between the dual-scale sulfur-proof and shock-proof pressure gauge 46 and the four-way connector 43.
The dual-scale sulfur-proof and shock-proof pressure gauge 46 is capable of adapting to the use environment of high pressure and high sulfur content.
In this embodiment, the square-shaped right-angle stop valve 47 is further included, the square-shaped right-angle stop valve 47 is disposed on two sides of the tubing head body 1 and the four-way connector 43, and a pair of manual flat valves 44 are disposed between the square-shaped right-angle stop valve 47 and the tubing head body 1 and between the square-shaped right-angle stop valve 47 and the four-way connector 43.
The square right-angle stop valve 47 is used for controlling and replacing the pressure gauge. When the handle is turned left to be turned on and turned right to be turned off, the valve is closed, the air passage is cut off, then the wire pressure screw is unscrewed, residual air is discharged, and then the pressure gauge is disassembled. When the handle is operated, the force is not excessively applied so as not to be damaged.
In this embodiment, a meter flange 48 is further included, the meter flange 48 being disposed between the tubing head body 1 and the pair of manual plate valves 44 on one side of the four-way connector 43.
Example 3
As shown in fig. 3 and 4, in embodiment 2, the manual flat valve 44 includes a valve stem 441 and an adjusting hand wheel 442, a first bevel gear 443 is disposed on the valve stem 441, a second bevel gear 444 is disposed on the adjusting hand wheel 442, the first bevel gear 443 and the second bevel gear 444 are in meshed connection, and the diameter of the first bevel gear 443 is larger than that of the second bevel gear 444.
The moment of the operator's switch is reduced relative to the adjustment hand wheel 442 mounted directly on the valve stem 441. In use, the gate valve should be in a fully open and closed state, and must not be in a half open and closed state, i.e. throttle use is not allowed. When the gate valve is used, the hand wheel needs to be rotated 1/4-1/2 circle after the hand wheel is turned on/off to be in place, so that the axial pushing force of the valve rod is eliminated, otherwise, the sealing performance of the valve plate is affected. Grease is periodically injected into the loose gearbox to lubricate the gears.
In this embodiment, the manual flat valve 44 includes a valve body 445, a valve cover 446 and a bracket 447, the valve cover 446 is disposed at an upper end of the valve body 445, the bracket 447 is disposed at an upper end of the valve cover 446, the first bevel gear 443 is disposed above the bracket 447, the bracket 447 is used for limiting the first bevel gear 443, the valve rod 441 is in threaded connection with a sleeve portion 448, the sleeve portion 448 is in meshed connection with the first bevel gear 443, so that rotating the first bevel gear 443 can enable the valve rod 441 to move up and down to realize the opening and closing of the manual flat valve 44, and the valve rod 441 extends downward to pass through the bracket 447 and the valve cover 446 to enter the inner cavity of the valve body 445. A packing 4461 is arranged between the valve rod 441 and the valve cover 446, a gland 4462 is arranged above the packing 4461, the gland 4462 is connected with the valve cover 446, and the gland 4462 generates a pressing force on the packing 4461, so that the tightness of the manual flat valve 44 is improved, and the screw corrosion of the valve rod 441 is prevented.
The technical principles of the present utility model have been described above in connection with specific embodiments, which are provided for the purpose of explaining the principles of the present utility model and are not to be construed as limiting the scope of the present utility model in any way. Other embodiments of the utility model will be apparent to those skilled in the art from consideration of this specification without undue burden.
Claims (10)
1. A 175MPa high pressure sulfur resistant production wellhead tubing head structure comprising:
the oil pipe head comprises an oil pipe head body (1), wherein a perforation (10) in the vertical direction is arranged on the oil pipe head body (1), a casing head connecting port (101) is arranged at the bottom of the corresponding perforation (10), a first sealing ring groove (102) is formed in the inner wall of the casing head connecting port (101), and a second sealing ring groove (103) is formed above the first sealing ring groove (102);
the pressure-enhanced sealing device (2), the pressure-enhanced sealing device (2) is arranged in the first sealing ring groove (102), the pressure-enhanced sealing device (2) comprises an upper metal sealing ring (21) and a lower metal sealing ring (22), and the extending direction of the joint surfaces of the upper metal sealing ring (21) and the lower metal sealing ring (22) is inclined to the vertical direction;
the third sealing ring (3), third sealing ring (3) set up in second sealing ring groove (103), the inside metal skeleton that is of third sealing ring (3), the cladding of third sealing ring (3) skin has sealed enhancement layer.
2. The 175MPa high-pressure sulfur-resistant production wellhead tubing head structure of claim 1, wherein: the pressure enhancement type sealing device (2) further comprises a pressing ring (23), the pressing ring (23) is arranged at the lower end of the lower metal sealing ring (22), the lower end face of the lower metal sealing ring (22) is attached to the upper end face of the pressing ring (23), and a sleeve head connecting port (101) is provided with a groove part which is matched with the pressing ring (23) corresponding to the lower end of the first sealing ring groove (102).
3. The 175MPa high-pressure sulfur-resistant production wellhead tubing head structure of claim 1, wherein: the oil pipe head is characterized in that a pair of grease perforation holes (104) are formed in two sides, corresponding to the side walls of the second sealing ring groove (103), of the oil pipe head body (1), a plug (11) and a grease injection valve (12) are respectively arranged at the outer ends of the pair of grease perforation holes (104), and an annular groove (31) is formed in the outer ring of the third sealing ring (3).
4. The 175MPa high-pressure sulfur-resistant production wellhead tubing head structure of claim 1, wherein: an anticorrosive paint is attached to the inner wall of the through hole (10).
5. A gas production wellhead assembly comprising a 175MPa high pressure sulfur resistant gas production wellhead tubing head structure as claimed in any one of claims 1 to 4, comprising: the oil pipe hanger (42) is arranged at the bottom of the oil production tree (4), and is inserted into the perforation (10);
jackscrew (5), jackscrew (5) wear to establish on tubing head body (1), jackscrew (5) front end extends into in perforation (10), jackscrew (5) front end with oil pipe hanger (42) outer wall conflict is connected, corresponds jackscrew (5), be equipped with the jackscrew perforation on tubing head body (1).
6. The gas production wellhead assembly of claim 5, wherein: the gas production tree (4) further comprises a four-way connector (43), the four-way connector (43) is arranged above the connecting flange (41), and a manual flat valve (44) and a hydraulic safety valve (45) are sequentially connected between the connecting flange (41) and the four-way connector (43).
7. The gas production wellhead assembly of claim 6, wherein: the sulfur-proof and shock-proof pressure gauge is characterized in that the upper end of the four-way connector (43) is connected with a double-scale sulfur-proof and shock-proof pressure gauge (46), and a manual flat valve (44) is arranged between the double-scale sulfur-proof and shock-proof pressure gauge (46) and the four-way connector (43).
8. The gas production wellhead assembly of claim 5, wherein: the oil pipe head further comprises square right-angle stop valves (47), wherein the square right-angle stop valves (47) are arranged on two sides of the oil pipe head body (1) and the four-way connector (43), and a pair of manual flat valves (44) are arranged between the square right-angle stop valves (47) and the oil pipe head body (1) and between the square right-angle stop valves (47) and the four-way connector (43).
9. The gas production wellhead assembly of claim 8, wherein: the oil pipe joint further comprises an instrument flange (48), wherein the instrument flange (48) is arranged between the oil pipe head body (1) and a pair of manual flat valves (44) on one side of the four-way connector (43).
10. A gas production wellhead device according to any one of claims 6 to 9, characterised in that: the manual flat valve (44) comprises a valve rod (441) and an adjusting hand wheel (442), a first bevel gear (443) is arranged on the valve rod (441), a second bevel gear (444) is arranged on the adjusting hand wheel (442), the first bevel gear (443) is meshed with the second bevel gear (444), and the diameter of the first bevel gear (443) is larger than that of the second bevel gear (444).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320840771.6U CN219528971U (en) | 2023-04-17 | 2023-04-17 | 175MPa high-pressure sulfur-resistant oil production wellhead oil pipe head structure and oil production wellhead device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320840771.6U CN219528971U (en) | 2023-04-17 | 2023-04-17 | 175MPa high-pressure sulfur-resistant oil production wellhead oil pipe head structure and oil production wellhead device |
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| Publication Number | Publication Date |
|---|---|
| CN219528971U true CN219528971U (en) | 2023-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320840771.6U Active CN219528971U (en) | 2023-04-17 | 2023-04-17 | 175MPa high-pressure sulfur-resistant oil production wellhead oil pipe head structure and oil production wellhead device |
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| CN (1) | CN219528971U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117072102A (en) * | 2023-10-18 | 2023-11-17 | 盐城旭东机械有限公司 | 175MPa high pressure gas production wellhead device |
| CN117189016A (en) * | 2023-09-08 | 2023-12-08 | 建湖县鸿达阀门管件有限公司 | Gas production wellhead device capable of automatically detecting and early warning |
-
2023
- 2023-04-17 CN CN202320840771.6U patent/CN219528971U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117189016A (en) * | 2023-09-08 | 2023-12-08 | 建湖县鸿达阀门管件有限公司 | Gas production wellhead device capable of automatically detecting and early warning |
| CN117189016B (en) * | 2023-09-08 | 2024-03-08 | 建湖县鸿达阀门管件有限公司 | Gas production wellhead device capable of automatically detecting and early warning |
| CN117072102A (en) * | 2023-10-18 | 2023-11-17 | 盐城旭东机械有限公司 | 175MPa high pressure gas production wellhead device |
| CN117072102B (en) * | 2023-10-18 | 2023-12-19 | 盐城旭东机械有限公司 | 175MPa high pressure gas production wellhead device |
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