CN115234188B - Detachable wellhead device for oil field - Google Patents
Detachable wellhead device for oil field Download PDFInfo
- Publication number
- CN115234188B CN115234188B CN202210905028.4A CN202210905028A CN115234188B CN 115234188 B CN115234188 B CN 115234188B CN 202210905028 A CN202210905028 A CN 202210905028A CN 115234188 B CN115234188 B CN 115234188B
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- Prior art keywords
- square
- rod
- ring
- head
- mount pad
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- 238000004519 manufacturing process Methods 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 7
- 239000003381 stabilizer Substances 0.000 claims 2
- 238000009434 installation Methods 0.000 abstract description 11
- 238000003780 insertion Methods 0.000 abstract description 4
- 230000037431 insertion Effects 0.000 abstract description 4
- 238000011900 installation process Methods 0.000 abstract description 4
- 238000000605 extraction Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 230000000087 stabilizing effect Effects 0.000 description 5
- 241000191291 Abies alba Species 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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
- E21B33/04—Casing heads; Suspending casings or tubings 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
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1078—Stabilisers or centralisers for casing, tubing or drill pipes
-
- 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
Landscapes
- 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)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to the technical field of oil extraction equipment, in particular to a detachable wellhead device for an oil field. Including fixing the mount pad in well head sleeve pipe upper end, can dismantle fixedly connected with casing head in the mount pad, casing head upper end is connected with the tubing head, and tubing is connected with the tubing head after running through casing head, and the production tree is installed to tubing head upper end, and the casing head includes the core cover, and the core cover runs through the mount pad, is fixed with the backing ring on the core cover, has seted up interior annular in the mount pad upper end, and the backing ring is located in interior annular, and the downthehole slip of square is provided with the square pole, and the terminal surface of square pole orientation core cover is the guide slope, and the square pole runs through interior annular, square pole lower extreme and backing ring upper end contact. According to the invention, the baffle ring in the inner ring groove is blocked by the square rod, and the inserted rod penetrates through the insertion hole on the insertion plate, so that the wellhead device has good stability after being installed, no loose parts exist in the installation process of the wellhead device, and the installation is convenient.
Description
Technical Field
The invention relates to the technical field of oil extraction equipment, in particular to a detachable wellhead device for an oil field.
Background
The wellhead device is main equipment for controlling and regulating oil and gas production at the uppermost part of an oil and gas well, and mainly comprises three parts, namely a casing head, a tubing head and a christmas tree body, wherein when the existing wellhead device is installed, the casing head is generally required to be in threaded connection, clamp connection or flange connection with a wellhead casing, and when the casing head is in threaded connection with the wellhead casing, the wellhead device is required to be integrally rotated, or the casing head, the tubing head and the christmas tree are detached and separated firstly, and the tubing head and the wellhead casing are installed after the casing head is in threaded connection; the clamp connection is realized by connecting a casing head and a wellhead casing by utilizing the clamp, and flanges matched with the clamp are required to be arranged on the casing head and the wellhead casing; the flange connection then needs to be connected through the flange on the sleeve pipe head and the flange on the well head sleeve pipe of connecting bolt, and above-mentioned three kinds of connection methods, connection structure is complicated, needs the cooperation to connect the part simultaneously and carries out the installation of well head device, has too much loose part, and the installation is in-process takes trouble hard, inconvenient dismantles well head device.
Disclosure of Invention
The technical problem to be solved by the invention is to provide the detachable wellhead device for the oil field, which is convenient to install and detach and has no loose parts in the installation process, and has good stability after the wellhead device is installed.
In order to achieve the above purpose, the technical scheme provided by the invention is as follows:
the utility model provides a detachable wellhead device for oil field, including fixing the mount pad in the well head sleeve upper end, detachable fixedly connected with casing head in the mount pad, casing head upper end is connected with tubing head, tubing is connected with tubing head after running through casing head, the production tree is installed to tubing head upper end, casing head includes the core sleeve, the core sleeve runs through the mount pad, be fixed with the baffle ring on the core sleeve, inner ring groove has been seted up in the mount pad upper end, the baffle ring is located in the inner ring groove, a plurality of rectangular holes have been seted up to the circumference equipartition on the baffle ring, vertical ejector pin has been pegged graft in the rectangular hole in the slip, be fixed with the centering ring on the core sleeve in the well head sleeve, the stabilizing slot has been seted up on the centering ring of ejector pin below, the stabilizing slot internal rotation is provided with the runner, the runner is fixed with the actuating lever on the runner upside, the actuating lever upper end is to the slope of core sleeve axial direction, the terminal surface that the ejector pin lower extreme tightly supports the actuating lever dorsad the core sleeve, the lower side of the rotating roller is fixedly provided with an arc friction plate, the outer edge of the friction plate is tightly abutted against the inner edge of the sleeve, a square hole corresponding to the ejector rod is formed in a mounting seat above the baffle ring, the axial direction of the square hole is parallel to the radial direction of the mounting seat, a square rod is slidably arranged in the square hole, the end face of the square rod, which faces the core sleeve, is a guide inclined plane, the square rod penetrates through the inner annular groove, the lower end of the square rod is in contact with the upper end of the baffle ring, the guide inclined plane of the square rod is tightly abutted against the upper end of the ejector rod, the upper end of the mounting seat is provided with a driving device for driving the square rod to move in the square hole, the upper end of the core sleeve is fixedly provided with an upper flange, the lower end of the upper flange is fixedly provided with an arc plate corresponding to the square rod, the upper end of the square rod is provided with a long groove, the lower end of the arc plate is fixedly provided with a plugboard corresponding to the long groove, the plugboard is spliced in the long groove, a jack is formed in the plugboard, the plugboard is internally fixedly provided with a plugboard.
Specifically, drive arrangement is including seting up the last annular in the mount pad upper end, goes up annular and square hole intercommunication, goes up the annular internal rotation and is provided with the swivel, and a plurality of vertical blind holes have been seted up to the swivel upper end, and the swivel lower extreme processing has planar screw thread, and square rod upper end processing has planar screw thread, and planar screw thread is located the annular and with planar screw thread threaded connection.
Specifically, the lower end of the upper flange is tightly contacted with the upper end of the mounting seat, the outer edge of the arc-shaped plate is contacted with the groove wall of the inner annular groove, and the lower end of the arc-shaped plate is in sliding contact with the upper end of the square rod below the arc-shaped plate.
Specifically, the upper end of the guide inclined plane inclines towards the axial center direction of the core sleeve, the cross section of the ejector rod is rectangular, a slope is arranged on one side of the square rod, which faces one side of the square rod, of the upper end of the ejector rod, and the slope is in contact with the guide inclined plane on one side of the square rod.
Specifically, the outer edge of the friction plate is provided with anti-skid patterns.
Specifically, the baffle ring is in sealing connection with the mounting seat, and the lower end of the upper flange is in sealing connection with the upper end of the mounting seat.
Specifically, the inner edge of the mounting seat is flush with the inner edge of the wellhead casing, and the inner edge of the wellhead casing is in sliding contact with the outer edge of the centralizing ring.
Compared with the prior art, the invention has the beneficial effects that:
according to the wellhead device, the baffle ring in the inner ring groove is blocked by the square rod, and the inserted rod penetrates through the insertion hole on the insertion plate, so that the wellhead device is good in stability after being installed, loose parts are not needed in the installation process of the wellhead device, the wellhead device is convenient to install, and in the installation process, the wellhead device can be stabilized by matching the centering ring with the wellhead sleeve, and the wellhead device can be prevented from being inclined.
Drawings
Fig. 1 is a cross-sectional view of the present invention.
Fig. 2 is an enlarged view of the area a in fig. 1.
Fig. 3 is a three-dimensional view of the wellhead casing mated with a mounting block.
Fig. 4 is a three-dimensional view of the casing head.
The names of the parts in the drawings are as follows:
1. a wellhead casing; 2. a mounting base; 3. square holes; 4. square rods; 5. a swivel; 6. an upper ring groove; 7. a blind hole; 8. a long groove; 9. a planar thread; 10. plane screw threads; 11. an upper flange; 12. a core sleeve; 13. an oil pipe; 14. a baffle ring; 15. a rod; 16. an arc-shaped plate; 17. inserting plate; 18. a jack; 19. a push rod; 20. centralizing the ring; 21. a rotating roller; 22. a driving rod; 23. a friction plate; 24. a tubing head; 25. a tree; 26. a stabilizing groove; 27. an inner ring groove.
Detailed Description
As shown in fig. 1-4, a detachable wellhead device for an oil field comprises a mounting seat 2 fixed at the upper end of a wellhead casing 1, a casing head is detachably and fixedly connected in the mounting seat 2, the upper end of the casing head is connected with an oil pipe head 24, an oil pipe 13 penetrates through the casing head and then is connected with the oil pipe head 24, and a christmas tree 25 is arranged at the upper end of the oil pipe head 24.
The casing head comprises a core sleeve 12, the core sleeve 12 penetrates through a mounting seat 2, a baffle ring 14 is fixed on the core sleeve 12, an inner ring groove 27 is formed in the upper end of the mounting seat 2, the baffle ring 14 is located in the inner ring groove 27, the baffle ring 14 is in sealing connection with the mounting seat 2, a plurality of rectangular holes are uniformly distributed on the circumference of the baffle ring 14, vertical ejector rods 19 are slidably inserted in the rectangular holes, a centralizing ring 20 is fixed on the core sleeve 12 in the wellhead casing 1, a stabilizing groove 26 is formed in the centralizing ring 20 below the ejector rods 19, a rotating roller 21 is rotationally arranged in the stabilizing groove 26, a driving rod 22 is fixed on the upper side of the rotating roller 21, the upper end of the driving rod 22 is inclined towards the axis direction of the core sleeve 12, the lower end of the ejector rods 19 is tightly abutted against the end face of the driving rod 22, an arc friction plate 23 is fixed on the lower side of the rotating roller 21, the outer edge of the friction plate 23 is tightly abutted against the inner edge of the wellhead casing 1, the outer edge of the friction plate 23 is provided with anti-skid threads, the installation seat 2 above the baffle ring 14 is provided with a square hole 3 corresponding to the ejector rod 19, the axial direction of the square hole 3 is parallel to the radial direction of the installation seat 2, the square hole 3 is internally provided with a square rod 4, the end surface of the square rod 4 facing the core sleeve 12 is a guide inclined plane, the square rod 4 penetrates through an inner annular groove 27, the lower end of the square rod 4 is contacted with the upper end of the baffle ring 14, the guide inclined plane of the square rod 4 tightly abuts against the upper end of the ejector rod 19, the upper end of the guide inclined plane inclines towards the axis direction of the core sleeve 12, the cross section of the ejector rod 19 is rectangular, the upper end of the ejector rod 19 is provided with a slope surface facing one side of the square rod 4, the slope surface contacts with the guide inclined plane on one side of the square rod 4, the upper end of the installation seat 2 is provided with a driving device for driving the square rod 4 to move in the square hole 3, the driving device comprises an upper annular groove 6 arranged at the upper end of the installation seat 2, the upper annular groove 6 is communicated with the square hole 3, the rotating ring 5 is rotationally arranged in the upper annular groove 6, the upper end of the swivel 5 is provided with a plurality of vertical blind holes 7, the lower end of the swivel 5 is provided with plane threads 9, the upper end of the square rod 4 is provided with plane threads 10, and the plane threads 10 are positioned in the upper annular groove 6 and are in threaded connection with the plane threads 9.
The upper end of the core sleeve 12 is fixedly provided with an upper flange 11, the lower end of the upper flange 11 is fixedly provided with an arc plate 16 corresponding to the square rod 4, the lower end of the upper flange 11 is in tight contact and sealing connection with the upper end of the mounting seat 2, the outer edge of the arc plate 16 is in contact with the groove wall of the inner groove 27, the lower end of the arc plate 16 is in sliding contact with the upper end of the square rod 4 below the arc plate 16, the upper end of the square rod 4 is provided with a long groove 8, the lower end of the arc plate 16 is fixedly provided with a plugboard 17 corresponding to the long groove 8, the plugboard 17 is spliced in the long groove 8, the plugboard 17 is provided with a jack 18, the inside of the long groove 8 is fixedly provided with a plugboard 15, and the plugboard 15 penetrates through the jack 18.
When the wellhead is installed, the wellhead is lifted, the core sleeve 12 is concentric with the installation seat 2, the wellhead is then lowered, the core sleeve 12 penetrates through the installation seat 2, the baffle ring 14 is located in the inner annular groove 27, the core sleeve 12 can be righted by the righting ring 20 in the process of being inserted into the wellhead sleeve 1, the wellhead is prevented from being inclined, after the upper flange 11 contacts the upper end of the installation seat 2, the baffle ring 14 is in sealing connection with the installation seat 2, then a spanner rod is inserted into the blind hole 7 of the swivel 5, the swivel 5 is rotated through the plate rod, during the rotation of the swivel 5, because the plane threads 9 are in threaded connection with the plane threads 10 on the square rod 4, the square rods 4 are allowed to be simultaneously close to the core sleeve 12 or far away from the core sleeve 12 in the rotation of the swivel 5, in the process that a plurality of square rods 4 are simultaneously close to the core sleeve 12, when the square rods 4 enter the inner ring groove 27, the lower ends of the square rods 4 are tightly abutted against the upper ends of the baffle rings 14, at the moment, the square rods 4 can stabilize the baffle rings 14 in the inner ring groove 27, as the square rods 4 are continuously close to the core sleeve 12, the inserting plates 17 are slidably inserted in the long grooves 8, the inserting rods 15 penetrate through the inserting holes 18 of the inserting plates 17, at the moment, the core sleeve 12 is stabilized in the wellhead sleeve 1, the square rods 4 are continuously made to be close to the core sleeve 12, after the guide inclined surfaces of the square rods 4 are contacted with the inclined surfaces of the ejector rods 19, as the square rods 4 move towards the core sleeve 12, the ejector rods 19 move downwards under the guide action of the guide inclined surfaces, the outer edges of the rotating rollers 21 and the friction plates 23 are tightly abutted against the inner edges of the wellhead sleeve 1 through extrusion driving rods 22 in the descending process of the ejector rods 19, under the friction force action of the anti-skid patterns on the outer edge of the friction plate 23 and the inner edge of the wellhead casing 1, the further connection between the core sleeve 12 and the wellhead casing 1 is realized, and the stability of the wellhead device after being installed can be effectively ensured.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (7)
1. The utility model provides a detachable wellhead assembly for oil field, including fixing mount pad (2) in well head sleeve (1) upper end, can dismantle fixedly connected with casing head in mount pad (2), casing head upper end is connected with tubing head (24), tubing (13) run through behind the casing head with tubing head (24) be connected, production tree (25) are installed to tubing head (24) upper end, a serial communication port, the casing head includes core sleeve (12), core sleeve (12) run through mount pad (2), be fixed with on core sleeve (12) and keep off ring (14), set up interior annular (27) in mount pad (2) upper end, keep off ring (14) are located in interior annular (27), a plurality of rectangular holes have been seted up to keep off ring (14) upper circumference equipartition, the downthehole sliding of rectangle is pegged graft has vertical ejector pin (19), be fixed with on core sleeve (12) in well head sleeve (1) right ring (20), set up stabilizer groove (26) on right ring (20) of ejector pin (19) below, stabilizer groove (26) inwards rotate and be provided with runner (21), runner (21) are located in the upper end face of the fixed to the lower end of the fixed rod (22) of runner rod (22), the fixed end face of the fixed rod (22) is driven to the lower side of the fixed rod (12), the friction plate (23) outer fringe tightly supports well head sleeve pipe (1) inner edge, set up square hole (3) that correspond with ejector pin (19) on mount pad (2) of baffle ring (14) top, the axial direction of square hole (3) is parallel with the radial direction of mount pad (2), the slip is provided with square rod (4) in square hole (3), the terminal surface of square rod (4) towards core sleeve (12) is the direction inclined plane, square rod (4) runs through inner ring groove (27), square rod (4) lower extreme and baffle ring (14) upper end contact, square rod (4) direction inclined plane tightly supports ejector pin (19) upper end, mount pad (2) upper end is provided with the drive arrangement who is used for driving square rod (4) at square hole (3) internal motion, core sleeve (12) upper end is fixed with upper flange (11), upper flange (11) lower extreme is fixed with arc plate (16) that correspond with square rod (4), elongated slot (8) are seted up to the upper end of square rod (4), arc plate (16) lower extreme is fixed with elongated slot (17) and is corresponded to elongated slot (8), jack (17) are fixed with in elongated slot (8), jack (17) are seted up in jack (18), jack (18) are fixed with jack (15).
2. The detachable wellhead device for the oil field according to claim 1, wherein the driving device comprises an upper annular groove (6) formed in the upper end of the mounting seat (2), the upper annular groove (6) is communicated with the square hole (3), a rotating ring (5) is rotationally arranged in the upper annular groove (6), a plurality of vertical blind holes (7) are formed in the upper end of the rotating ring (5), planar threads (9) are formed in the lower end of the rotating ring (5), planar threads (10) are formed in the upper end of the square rod (4), and the planar threads (10) are located in the upper annular groove (6) and are in threaded connection with the planar threads (9).
3. The detachable wellhead device for oil fields according to claim 1, characterized in that the lower end of the upper flange (11) is tightly contacted with the upper end of the mounting seat (2), the outer edge of the arc-shaped plate (16) is contacted with the groove wall of the inner ring groove (27), and the lower end of the arc-shaped plate (16) is in sliding contact with the upper end of the square rod (4) below the arc-shaped plate.
4. The detachable wellhead device for oil fields according to claim 1, wherein the upper end of the guiding inclined plane is inclined towards the axis direction of the core sleeve (12), the cross section of the ejector rod (19) is rectangular, a slope is arranged on the side of the square rod (4) of the upper end of the ejector rod (19) towards one side of the square rod, and the slope is contacted with the guiding inclined plane on one side of the square rod.
5. A removable wellhead assembly for oil fields according to claim 1, characterised in that the friction plate (23) has anti-slip threads machined on its outer edge.
6. The detachable wellhead device for oil fields according to claim 1, characterized in that the baffle ring (14) is in sealing connection with the mounting base (2), and the lower end of the upper flange (11) is in sealing connection with the upper end of the mounting base (2).
7. The detachable wellhead device for oil fields according to claim 1, characterized in that the inner edge of the mounting seat (2) is flush with the inner edge of the wellhead casing (1), and the outer edge of the centralizing ring (20) is in sliding contact with the inner edge of the wellhead casing (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210905028.4A CN115234188B (en) | 2022-07-29 | 2022-07-29 | Detachable wellhead device for oil field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210905028.4A CN115234188B (en) | 2022-07-29 | 2022-07-29 | Detachable wellhead device for oil field |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115234188A CN115234188A (en) | 2022-10-25 |
| CN115234188B true CN115234188B (en) | 2024-04-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210905028.4A Active CN115234188B (en) | 2022-07-29 | 2022-07-29 | Detachable wellhead device for oil field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115234188B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016064903A1 (en) * | 2014-10-22 | 2016-04-28 | Cameron International Corporation | Rotating wellhead hanger assemblies |
| CN212898349U (en) * | 2020-06-17 | 2021-04-06 | 濮阳市天隆实业有限公司 | Oil gas well casing head |
| CN112796698A (en) * | 2021-04-14 | 2021-05-14 | 纬达石油装备有限公司 | Mandrel type casing head and using method thereof |
| CN113153204A (en) * | 2021-05-14 | 2021-07-23 | 京鸿石油钻采工程技术有限公司 | Integral casing head of oil well drilling and production equipment |
| CN216553873U (en) * | 2021-12-20 | 2022-05-17 | 河南东方龙机械制造有限公司 | Oil pipe bleeder |
-
2022
- 2022-07-29 CN CN202210905028.4A patent/CN115234188B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016064903A1 (en) * | 2014-10-22 | 2016-04-28 | Cameron International Corporation | Rotating wellhead hanger assemblies |
| CN212898349U (en) * | 2020-06-17 | 2021-04-06 | 濮阳市天隆实业有限公司 | Oil gas well casing head |
| CN112796698A (en) * | 2021-04-14 | 2021-05-14 | 纬达石油装备有限公司 | Mandrel type casing head and using method thereof |
| CN113153204A (en) * | 2021-05-14 | 2021-07-23 | 京鸿石油钻采工程技术有限公司 | Integral casing head of oil well drilling and production equipment |
| CN216553873U (en) * | 2021-12-20 | 2022-05-17 | 河南东方龙机械制造有限公司 | Oil pipe bleeder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115234188A (en) | 2022-10-25 |
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