CN212898349U - Oil gas well casing head - Google Patents
Oil gas well casing head Download PDFInfo
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- CN212898349U CN212898349U CN202021127446.8U CN202021127446U CN212898349U CN 212898349 U CN212898349 U CN 212898349U CN 202021127446 U CN202021127446 U CN 202021127446U CN 212898349 U CN212898349 U CN 212898349U
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- casing head
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- fixing ring
- head body
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Abstract
The utility model relates to an oil development equipment field, concretely relates to oil gas well casing head. The sleeve head comprises a sleeve head body, a fixing ring is fixed on the inner edge of the sleeve head body, a plurality of vertical first long grooves are uniformly distributed in the inner circumference of the fixing ring, a second long groove communicated with the first long grooves is formed in the inner edge of the fixing ring, a jacking block is slidably arranged in the first long groove, clamping blocks are uniformly fixed on one side, facing the axis of the fixing ring, of the jacking block, the clamping blocks are slidably arranged in the second long grooves, a pressing ring is slidably arranged in a sleeve head above the fixing ring, a sealing ring is fixed on the inner edge of the pressing ring, a jacking sleeve is in threaded connection with the sleeve head above the pressing ring, the lower end of the jacking sleeve is in contact with the upper end of the pressing ring, a sheath is fixed on the outer side of. The utility model discloses, interior sleeve pipe stability can be good, and interior sleeve pipe that can be fine seals, and structural design is reasonable, makes things convenient for the installation of follow-up equipment.
Description
Technical Field
The utility model relates to an oil development equipment field, concretely relates to oil gas well casing head.
Background
The casing head is used for fixing a well mouth of a drilling well, connecting a well mouth casing string, supporting the gravity of a technical casing and an oil layer casing, sealing annular space between layers of pipes, providing transitional connection for installing a blowout preventer and a tubing head and a Christmas tree, and performing construction operations such as mud compensation, mud extrusion, monitoring, balance liquid filling and the like through two side ports on the casing head body. The existing casing head has poor sealing performance, inconvenient installation and poor stability of an inner casing, and the inner casing which cannot be good is sealed at the same time.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a simple structure uses simple to operate, and interior sleeve pipe stability can be good, and the oil gas well casing head that seals is carried out to interior sleeve pipe that can be fine.
In order to realize the purpose, the utility model provides a technical scheme is:
an oil-gas well casing head comprises a casing head body, wherein a fixing ring is fixed on the inner edge of the casing head body, a plurality of vertical first long grooves are uniformly distributed on the inner circumference of the fixing ring, a second long groove communicated with the first long grooves is formed on the inner edge of the fixing ring, the groove width of the first long grooves is larger than that of the second long grooves, ejector blocks are arranged in the first long grooves in a sliding mode, clamping blocks are uniformly fixed on one sides, facing the axis of the fixing ring, of the ejector blocks, the clamping blocks are arranged in the second long grooves in a sliding mode, the end faces, back to the axis of the fixing ring, of the ejector blocks are inclined planes with the lower ends inclined towards the outer side of the fixing ring, a pressing ring is arranged in the casing head body above the fixing ring in a sliding mode, a plurality of wedge blocks corresponding to the first long grooves are uniformly distributed and fixed on the circumference of the lower end of the pressing ring, the, the casing head body internal thread above the compression ring is connected with a jacking sleeve, the lower end of the jacking sleeve is in contact with the upper end of the compression ring, a sheath is fixed on the outer side of the upper end of the jacking sleeve, the upper end of the casing head body is rotatably arranged between the sheath and the jacking sleeve, a gland is connected with the internal thread of the jacking sleeve, and a rubber pad is fixed at the lower end of the gland.
Specifically, a plurality of fixing plates are fixed on the outer edge of the lower end of the casing head body, and a bottom ring concentric with the casing head body is fixed at the lower ends of the fixing plates.
Specifically, a plurality of teeth are processed on one side of the clamping block, which faces to the axis of the fixing ring.
Specifically, the upper end of the gland is provided with a square hole.
Specifically, a plurality of through holes are uniformly distributed on the circumference of the sheath.
Specifically, the left side and the right side of the casing head body below the fixing ring are both fixed with side pipes communicated with the casing head body, and valves are installed on the side pipes.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses, simple structure uses simple to operate, and interior sleeve pipe stability can be good, and the interior sleeve pipe that can be fine seals up, and structural design is reasonable, makes things convenient for the installation of follow-up equipment, and the clamp splice is convenient to be changed, circulated use.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
As shown in fig. 1, an oil gas well casing head comprises a casing head body 3, a plurality of fixing plates 2 are fixed on the outer edge of the lower end of the casing head body 3, and a bottom ring 1 concentric with the casing head body 3 is fixed on the lower end of each fixing plate 2.
A fixing ring 8 is fixed on the inner edge of the casing head body 3, a plurality of vertical first long grooves 9 are uniformly formed in the inner circumference of the fixing ring 8, a second long groove 12 communicated with the first long groove 9 is formed in the inner edge of the fixing ring 8, the groove width of the first long groove 9 is larger than that of the second long groove 12, a top block 10 is arranged in the first long groove 9 in a sliding mode, a clamping block 11 is fixed on one side, facing the axis of the fixing ring 8, of the top block 10, a plurality of teeth are machined on one side, facing the axis of the fixing ring 8, of the clamping block 11, the clamping block 11 is arranged in the second long groove 12 in a sliding mode, the end face, facing away from the axis of the fixing ring 8, of the top block 10 is an inclined face with the lower end inclined towards the outer side of the fixing ring 8, side pipes 4 communicated with the left side.
The inner circumference of the lower end of the pressing ring 5 is uniformly and fixedly provided with a plurality of wedge blocks 7 corresponding to the first long groove 9, the wedge blocks 7 are inserted into the first long groove 9, the inclined surfaces of the wedge blocks 7 are in sliding contact with the inclined surfaces of the top blocks 10, the upper ends of the inclined surfaces of the wedge blocks 7 incline towards the center direction of the pressing ring 5, the inner edge of the pressing ring 5 is fixedly provided with a sealing ring 6, the inner thread of the casing head body 3 above the pressing ring 5 is connected with a top sleeve 13, the lower end of the top sleeve 13 is in contact with the upper end of the pressing ring 5, the outer side of the upper end of the top sleeve 13 is fixedly provided with a sheath 14, the upper end of the casing head body 3 is rotatably arranged between the sheath 14 and the top sleeve 13, the circumference of the sheath 14 is uniformly provided with a plurality of through holes 15, the inner thread of the top.
The utility model discloses during the use, take off gland 16, 3 lower extremes of casing head body and outer tube threaded connection, then with end ring 1 and installation base fixed connection, interior sleeve pipe runs through clamping ring 5 and sealing ring 6 this moment, in the tip plug-in inlet through-hole 15 with the pull rod, then rotate sheath 14, make sheath 14 drive the apical cover 13 and rotate, apical cover 13 rotates down at 3 inner edges of casing head body, apical cover 13 tightly supports clamping ring 5, clamping ring 5 makes voussoir 7 down in first elongated slot 9, when voussoir 7 descends, under the guide effect on the inclined plane of voussoir 7 and the 10 inclined planes of kicking block, clamp splice 11 is to 8 central directions movements of solid fixed ring in second elongated slot 12, clamp splice 11 extrudees the stability with the interior sleeve pipe of solid fixed ring 8 inside. The inside sealing ring 6 of clamping ring 5 can seal the inner casing outer fringe, and interior sleeve pipe is stabilized the back by clamp splice 11, with 16 threaded connection of gland in the top cover 13 for the rubber pad 18 of 16 lower extremes of gland seals the interior sleeve pipe upper end mouth, thereby makes interior sheathed tube sealing performance better. After the top sleeve 13 and the press ring 5 are detached, the top block 10 and the clamping block 11 can be easily taken out of the first long groove 9 and the second long groove 12, and the clamping block 11 is convenient to replace. The utility model discloses, simple structure uses simple to operate, and interior sleeve pipe stability can be good, and the interior sleeve pipe that can be fine seals up, and structural design is reasonable, makes things convenient for the installation of follow-up equipment, and clamp splice 11 is convenient to be changed, circulated use.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. An oil-gas well casing head comprises a casing head body (3) and is characterized in that a fixing ring (8) is fixed on the inner edge of the casing head body (3), a plurality of vertical first long grooves (9) are uniformly distributed on the inner circumference of the fixing ring (8), second long grooves (12) communicated with the first long grooves (9) are formed in the inner edge of the fixing ring (8), the groove width of the first long grooves (9) is larger than that of the second long grooves (12), ejector blocks (10) are arranged in the first long grooves (9) in a sliding mode, clamping blocks (11) are fixed on one sides, facing the axis of the fixing ring (8), of the ejector blocks (10), the clamping blocks (11) are arranged in the second long grooves (12) in a sliding mode, the end faces, facing away from the axis of the fixing ring (8), of the ejector blocks (10) are inclined planes with the lower ends inclined towards the outer side of the fixing ring (8), a pressing ring (5) is arranged in the casing head body, the lower end circumference of the pressing ring (5) is uniformly and fixedly provided with a plurality of wedges (7) corresponding to the first long groove (9), the wedges (7) are inserted into the first long groove (9), the inclined surface of each wedge (7) is in sliding contact with the inclined surface of the ejector block (10), the upper end of the inclined surface of each wedge (7) inclines towards the center of the pressing ring (5), a sealing ring (6) is fixed on the inner edge of the pressing ring (5), a jacking sleeve (13) is connected with the inner thread of the casing head body (3) above the pressing ring (5), the lower end of the jacking sleeve (13) is in contact with the upper end of the pressing ring (5), a sheath (14) is fixed on the outer side of the upper end of the jacking sleeve (13), the upper end of the casing head body (3) is rotatably arranged between the sheath (14) and the jacking sleeve (13), a gland (16) is connected with.
2. An oil and gas well casing head according to claim 1, characterized in that a plurality of fixing plates (2) are fixed on the outer edge of the lower end of the casing head body (3), and a bottom ring (1) concentric with the casing head body (3) is fixed on the lower end of the fixing plates (2).
3. Oil and gas well casing head according to claim 1, characterized in that the clamping block (11) is provided with a plurality of teeth on the side facing the axis of the fixed ring (8).
4. An oil and gas well casing head as claimed in claim 1, characterized in that the gland (16) has a square hole (17) in its upper end.
5. An oil and gas well casing head according to claim 1, characterized in that a plurality of through holes (15) are evenly distributed on the circumference of the sheath (14).
6. An oil and gas well casing head according to claim 1, characterized in that the casing head body (3) below the fixing ring (8) has side pipes (4) fixed to the left and right sides, and the side pipes (4) are provided with valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021127446.8U CN212898349U (en) | 2020-06-17 | 2020-06-17 | Oil gas well casing head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021127446.8U CN212898349U (en) | 2020-06-17 | 2020-06-17 | Oil gas well casing head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212898349U true CN212898349U (en) | 2021-04-06 |
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ID=75279008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021127446.8U Active CN212898349U (en) | 2020-06-17 | 2020-06-17 | Oil gas well casing head |
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| Country | Link |
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| CN (1) | CN212898349U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115234188A (en) * | 2022-07-29 | 2022-10-25 | 河南东方龙机械制造有限公司 | Detachable wellhead device for oil field |
-
2020
- 2020-06-17 CN CN202021127446.8U patent/CN212898349U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115234188A (en) * | 2022-07-29 | 2022-10-25 | 河南东方龙机械制造有限公司 | Detachable wellhead device for oil field |
| CN115234188B (en) * | 2022-07-29 | 2024-04-09 | 河南东方龙机械制造有限公司 | Detachable wellhead device for oil field |
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