CN222501683U - A high-sealing anti-leakage casing head for oil field wellhead - Google Patents
A high-sealing anti-leakage casing head for oil field wellhead Download PDFInfo
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- CN222501683U CN222501683U CN202421425386.6U CN202421425386U CN222501683U CN 222501683 U CN222501683 U CN 222501683U CN 202421425386 U CN202421425386 U CN 202421425386U CN 222501683 U CN222501683 U CN 222501683U
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Abstract
本实用新型公开了一种用于油田井口的高密封性防泄漏套管头，属于油井套管头技术领域，其技术方案要点包括套管头主体和连接管，所述套管头主体与连接管之间栓接，所述套管头主体和连接管相对一侧的内部均设置有密封组件，且密封组件的表面分别与套管头主体和连接管的内壁紧密接触；所述密封组件包括密封环，所述密封环处于套管头主体和连接管相对的一侧之间，解决了现有的用于油田井口的套管头在与进口以及采油树连接后，由于油井后期抽油管工作产生振动时会导致套管头与采油树连接管之间产生磨损，从而造成套管头与采油树之间密封结构的使用寿命，降低了密封性，从而影响使用效果的问题。
The utility model discloses a high-sealing anti-leakage casing head for oilfield wellheads, belonging to the technical field of casing heads for oilfields. The technical scheme thereof includes a casing head body and a connecting pipe, wherein the casing head body and the connecting pipe are bolted to each other, and sealing components are arranged inside opposite sides of the casing head body and the connecting pipe, and the surfaces of the sealing components are in close contact with the inner walls of the casing head body and the connecting pipe respectively; the sealing component includes a sealing ring, and the sealing ring is located between the casing head body and the opposite side of the connecting pipe, so as to solve the problem that after the existing casing head for oilfield wellheads is connected with an inlet and an oil tree, the casing head and the connecting pipe of the oil tree are worn out due to the vibration of the oil well pumping pipe in the later stage, thereby shortening the service life of the sealing structure between the casing head and the oil tree, reducing the sealing performance, and thus affecting the use effect.
Description
Technical Field
The utility model relates to the technical field of oil well casing heads, in particular to a high-tightness leakage-proof casing head for an oil well head.
Background
Casing head, the well head that is used for fixed drilling well promptly, connects well head casing string for support the gravity of technical sleeve pipe and reservoir sleeve pipe, sealed each inter-layer annular space provides transitional coupling for installation preventer, tubing head, christmas tree, and through two side mouths on the casing head body, can carry out construction operations such as makeup and extrusion mud, control and filling balancing liquid.
After the existing casing head for the wellhead of the oil field is connected with an inlet and a christmas tree, abrasion is generated between the casing head and a connection pipe of the christmas tree due to vibration generated by the operation of a later-period oil pumping pipe of the oil well, so that the service life of a sealing structure between the casing head and the christmas tree is prolonged, and the sealing performance is reduced.
Disclosure of utility model
The utility model provides a high-tightness anti-leakage casing head for an oilfield wellhead, and aims to solve the problems that after the existing casing head for the oilfield wellhead is connected with an inlet and a christmas tree, abrasion is generated between the casing head and a connection pipe of the christmas tree due to vibration generated by the operation of a later-stage oil pumping pipe of an oil well, the service life of a sealing structure between the casing head and the christmas tree is prolonged, the tightness is reduced, and the using effect is affected.
The utility model is realized in such a way that the high-tightness leakage-proof casing head for the oilfield wellhead comprises a casing head main body and a connecting pipe, wherein the casing head main body is bolted with the connecting pipe, sealing components are arranged in the casing head main body and the connecting pipe on the opposite sides, and the surfaces of the sealing components are respectively in close contact with the inner walls of the casing head main body and the connecting pipe;
The sealing assembly comprises a sealing ring, the sealing ring is positioned between one opposite side of the casing head main body and the connecting pipe, the surfaces of the sealing ring are respectively tightly attached to the inner walls of the casing head main body and the connecting pipe, a plurality of deep parts are arranged at the top and the bottom of the sealing ring, one side of the deep parts, far away from the sealing ring, is connected with a movable rod, one side of the movable rod, far away from the deep parts, is connected with a spring, and one side, close to the inner walls of the casing head main body and the connecting pipe, of the spring is respectively contacted with the casing head main body and the connecting pipe.
In order to achieve the effect of increasing the connection strength of the sealing assembly and the casing head main body and the connecting pipe respectively, the high-tightness anti-leakage casing head for the oilfield wellhead is preferable, connecting grooves matched with deep parts are formed in the casing head main body and the inner part of one side opposite to the connecting pipe, the deep parts are respectively arranged at the top and the bottom of the sealing ring in an annular mode, protrusions are sleeved on the surfaces of the deep parts, and the surfaces of the protrusions are respectively attached to the inner walls of the casing head main body and the connecting pipe.
In order to achieve the effect that the protrusions are matched with the casing head main body and the connecting pipe respectively, the high-tightness anti-leakage casing head for the oilfield wellhead is preferable, the inner walls of the casing head main body and the connecting pipe are provided with non-return grooves matched with the protrusions, and the non-return grooves are communicated with the connecting groove.
In order to achieve the effects of connecting the movable rod with the deep member and enabling the movable rod to be matched with the spring for use, the high-tightness leakage-proof casing head for the oilfield wellhead is preferably provided with connecting plates on one side of the deep member and one side of the movable rod, wherein the top connecting plate is connected with the deep member, and the bottom connecting plate is in contact with the spring.
In order to achieve the effect of limiting the position of the spring, the high-tightness anti-leakage casing head for the oilfield wellhead is preferable, wherein the casing head main body and the connecting pipe are respectively provided with a fixing groove, and the spring is positioned in the fixing grooves.
In order to achieve the effect of further improving the tightness between the casing head main body and the connecting pipe, the high-tightness anti-leakage casing head for the oilfield wellhead is preferable, the top and the bottom of the sealing ring are respectively provided with two connecting rings, sealing grooves matched with the connecting rings are respectively formed in the casing head main body and the connecting pipe, and the surfaces of the connecting rings are tightly attached to the inner wall of the sealing grooves.
In order to achieve the effect of improving the abrasion resistance of the sealing assembly, the high-tightness leakage-proof casing head for the oilfield wellhead is preferably formed by the fact that the sealing ring, the deep part, the connecting ring and the bulge are made of polyurethane rubber materials.
Compared with the prior art, the utility model has the beneficial effects that:
This a leak casing head is prevented to high leakproofness for oilfield wellhead through setting up seal assembly, the accessible goes deep into the piece respectively with be in the inside of casing head main part and connecting pipe, can promote the sealing ring respectively with casing head main part and connecting pipe between the connectivity, guarantee the position of use of sealing ring, when simultaneously contacting through two sealing rings, drive movable rod motion and compression spring, can play the cushioning effect when connecting pipe and the casing head main part of christmas tree are connected when the installation christmas tree, and can reduce the wearing and tearing between casing head main part and the christmas tree connecting pipe when later stage sucker rod work produces the vibration, seal assembly's life has been improved, and reach the effect that high leakproofness was prevented leaking.
Drawings
FIG. 1 is an overall block diagram of a high-tightness leak-proof casing head for an oilfield wellhead of the present utility model;
FIG. 2 is a schematic view of a partial connection of a casing head body and a connection tube according to the present utility model;
FIG. 3 is a schematic illustration of a partial connection of a seal assembly and a casing head in accordance with the present utility model;
FIG. 4 is an enlarged schematic view of the utility model at A in FIG. 3;
fig. 5 is an enlarged schematic view of the present utility model at B in fig. 3.
In the figure, 1, a casing head main body, 2, a connecting pipe, 3, a sealing component, 301, a sealing ring, 302, a deep part, 303, a moving rod, 304, a spring, 4, a connecting groove, 5, a bulge, 6, a non-return groove, 7, a connecting plate, 8, a fixing groove, 9, a connecting ring, 10 and a sealing groove.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
In the description of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, in the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Referring to FIGS. 1-5, the utility model provides a high-tightness leakage-proof casing head for an oilfield wellhead, which comprises a casing head main body 1 and a connecting pipe 2, wherein the casing head main body 1 and the connecting pipe 2 are bolted, sealing assemblies 3 are arranged in the opposite sides of the casing head main body 1 and the connecting pipe 2, and the surfaces of the sealing assemblies 3 are respectively in close contact with the inner walls of the casing head main body 1 and the connecting pipe 2;
The seal assembly 3 comprises a seal ring 301, the seal ring 301 is arranged between one opposite sides of the casing head main body 1 and the connecting pipe 2, the surfaces of the seal ring 301 are respectively tightly attached to the inner walls of the casing head main body 1 and the connecting pipe 2, a plurality of penetrating members 302 are arranged at the top and the bottom of the seal ring 301, one side, far away from the seal ring 301, of the penetrating members 302 is connected with a movable rod 303, one side, far away from the penetrating members 302, of the movable rod 303 is connected with a spring 304, and one side, close to the inner walls of the casing head main body 1 and the connecting pipe 2, of the spring 304 is respectively contacted with the two.
In the embodiment, through arranging the sealing component 3, the penetrating piece 302 can be respectively positioned in the casing head main body 1 and the connecting pipe 2, the connectivity between the sealing ring 301 and the casing head main body 1 and the connecting pipe 2 can be improved, the use position of the sealing ring 301 is ensured, meanwhile, when the two sealing rings 301 are contacted, the moving rod 303 is driven to move and the spring 304 is compressed, the buffering effect can be achieved when the connecting pipe 2 of the christmas tree is connected with the casing head main body 1 during the installation of the christmas tree, the abrasion between the casing head main body 1 and the christmas tree connecting pipe 2 can be reduced during the vibration of the later pumping pipe operation, the service life of the sealing component 3 is prolonged, and the high-tightness leakage prevention effect is achieved.
As a technical optimization scheme of the utility model, connecting grooves 4 matched with the deep parts 302 are formed in the inner parts of opposite sides of the casing head main body 1 and the connecting pipe 2, the deep parts 302 are respectively arranged at the top and the bottom of the sealing ring 301 in a ring shape, the surfaces of the deep parts 302 are sleeved with bulges 5, and the surfaces of the bulges 5 are respectively attached to the inner walls of the casing head main body 1 and the connecting pipe 2.
In the present embodiment, the positioning of the penetration member 302 inside the casing head main body 1 and the connection pipe 2, respectively, can be facilitated by providing the connection groove 4, and the effect of limiting the position of the penetration member 302 can be achieved by providing the protrusion 5.
As a technical optimization scheme of the utility model, the inner walls of the casing head main body 1 and the connecting pipe 2 are provided with the non-return groove 6 matched with the bulge 5, and the non-return groove 6 is communicated with the connecting groove 4.
In the embodiment, the non-return groove 6 can achieve the effect of being matched with the bulge 5.
As a technical optimization of the present utility model, the deep member 302 and one side of the moving rod 303 are both provided with the connection plate 7, and the top connection plate 7 is connected with the deep member 302, and the bottom connection plate 7 is in contact with the spring 304.
In the present embodiment, by providing the connection plate 7, the effect of connecting the moving lever 303 with the penetration member 302 and connecting the spring 304 with the moving lever 303 can be achieved, respectively.
As a technical optimization scheme of the utility model, the sleeve head main body 1 and the connecting pipe 2 are provided with the fixing groove 8, and the spring 304 is positioned in the fixing groove 8.
In the present embodiment, the effect of restricting the use position of the spring 304 can be achieved by providing the fixing groove 8.
As a technical optimization scheme of the utility model, two connecting rings 9 are arranged at the top and the bottom of the sealing ring 301, sealing grooves 10 matched with the connecting rings 9 are arranged in the casing head main body 1 and the connecting pipe 2, and the surfaces of the connecting rings 9 are tightly attached to the inner walls of the sealing grooves 10.
In the embodiment, the sealing performance between the casing head main body 1 and the connecting pipe 2 can be further improved by the cooperation of the connecting ring 9 and the sealing groove 10.
As a technical optimization scheme of the utility model, the sealing ring 301, the deep part 302, the connecting ring 9 and the bulge 5 are all made of polyurethane rubber materials.
In this embodiment, the seal ring 301, the deep member 302, the connecting ring 9 and the protrusion 5 are made of polyurethane rubber, so that the abrasion resistance of the seal assembly 3 can be improved.
The working principle is that the connecting pipe 2 and the christmas tree are integrally arranged, so that when the connecting pipe 2 of the christmas tree is connected with the casing head main body 1, the two sealing rings 301 are contacted, the movable rod 303 is driven to move and compress the spring 304, the connecting pipe 2 of the christmas tree can be buffered when being connected with the casing head main body 1 when being installed, the bulge 5 is forced to deform and enter the inside of the non-return groove 6 under the action of pressure, and meanwhile, the connecting ring 9 enters the inside of the sealing groove 10 to strengthen sealing at the joint, so that the abrasion between the casing head main body 1 and the connecting pipe 2 of the christmas tree can be reduced when the oil pumping pipe is vibrated during working, the service life of the sealing assembly 3 is prolonged, and the high-tightness leakage prevention effect is achieved.
The foregoing description of the preferred embodiments of the utility model 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 utility model.
Claims (7)
1. The high-tightness anti-leakage casing head for the oilfield wellhead comprises a casing head main body (1) and a connecting pipe (2), and is characterized in that the casing head main body (1) is bolted with the connecting pipe (2), sealing assemblies (3) are arranged in the casing head main body (1) and the connecting pipe (2) on the opposite sides, and the surfaces of the sealing assemblies (3) are respectively in tight contact with the inner walls of the casing head main body (1) and the connecting pipe (2);
Seal assembly (3) are including sealing ring (301), sealing ring (301) are located between casing head main part (1) and the opposite one side of connecting pipe (2), and the surface of sealing ring (301) closely laminates with the inner wall of casing head main part (1) and connecting pipe (2) respectively, the top and the bottom of sealing ring (301) all are provided with a plurality of and go deep into piece (302), and go deep into one side that piece (302) kept away from sealing ring (301) and be connected with movable rod (303), one side that piece (302) was kept away from to movable rod (303) is connected with spring (304), and one side that spring (304) are close to casing head main part (1) and connecting pipe (2) inner wall contacts with both respectively.
2. The high-tightness leak-proof casing head for an oilfield wellhead is characterized in that connecting grooves (4) matched with penetrating pieces (302) are formed in the casing head main body (1) and the inside of one side opposite to the connecting pipe (2), the penetrating pieces (302) are respectively arranged at the top and the bottom of a sealing ring (301) in a ring shape, protrusions (5) are sleeved on the surfaces of the penetrating pieces (302), and the surfaces of the protrusions (5) are respectively attached to the inner walls of the casing head main body (1) and the connecting pipe (2).
3. The high-tightness leakage-proof casing head for the oilfield wellhead according to claim 2, wherein the casing head main body (1) and the inner wall of the connecting pipe (2) are provided with a non-return groove (6) matched with the bulge (5), and the non-return groove (6) is communicated with the connecting groove (4).
4. A high tightness leak-proof casing head for an oilfield wellhead according to claim 1, wherein the deep member (302) and the side of the traveling rod (303) are each provided with a connection plate (7), and the top connection plate (7) is connected to the deep member (302) and the bottom connection plate (7) is in contact with the spring (304).
5. The high-tightness leak-proof casing head for an oilfield wellhead according to claim 1, wherein the casing head main body (1) and the connecting pipe (2) are provided with fixing grooves (8) in the inside, and the springs (304) are positioned in the fixing grooves (8).
6. The high-tightness leak-proof casing head for an oilfield wellhead according to claim 1, wherein the top and the bottom of the sealing ring (301) are respectively provided with two connecting rings (9), sealing grooves (10) matched with the connecting rings (9) are respectively formed in the casing head main body (1) and the connecting pipe (2), and the surfaces of the connecting rings (9) are tightly attached to the inner walls of the sealing grooves (10).
7. The high-tightness leak-proof casing head for an oilfield wellhead according to claim 6, wherein the sealing ring (301), the deep member (302), the connecting ring (9) and the protrusion (5) are all made of polyurethane rubber materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421425386.6U CN222501683U (en) | 2024-06-20 | 2024-06-20 | A high-sealing anti-leakage casing head for oil field wellhead |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421425386.6U CN222501683U (en) | 2024-06-20 | 2024-06-20 | A high-sealing anti-leakage casing head for oil field wellhead |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222501683U true CN222501683U (en) | 2025-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421425386.6U Active CN222501683U (en) | 2024-06-20 | 2024-06-20 | A high-sealing anti-leakage casing head for oil field wellhead |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222501683U (en) |
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- 2024-06-20 CN CN202421425386.6U patent/CN222501683U/en active Active
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