CN217632363U - Simple oil-gas well casing head - Google Patents
Simple oil-gas well casing head Download PDFInfo
- Publication number
- CN217632363U CN217632363U CN202221320801.2U CN202221320801U CN217632363U CN 217632363 U CN217632363 U CN 217632363U CN 202221320801 U CN202221320801 U CN 202221320801U CN 217632363 U CN217632363 U CN 217632363U
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- China
- Prior art keywords
- connecting cylinder
- stage step
- gas well
- well casing
- casing head
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- 238000007789 sealing Methods 0.000 claims abstract description 18
- 230000000087 stabilizing effect Effects 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims description 4
- 239000007789 gas Substances 0.000 description 6
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 206010040007 Sense of oppression Diseases 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Gasket Seals (AREA)
Abstract
The utility model discloses a simple oil-gas well casing head, which comprises a connecting cylinder, wherein the connecting cylinder comprises a first connecting cylinder and a second connecting cylinder, and the first connecting cylinder is connected with the bottom of the second connecting cylinder; the top of the hanger is connected with the second connecting cylinder, the middle of the hanger is provided with a connecting part, and the connecting part is connected with the first connecting cylinder; the outer wall of the connecting part is provided with a first-stage step, a second-stage step and a connecting lug; the inner wall of the first sleeve pipe body is provided with a first-stage step, a second-stage step and a third-stage step; the upper end surface of the connecting lug is arranged in a downward inclined manner; the side wall of the first connecting cylinder is provided with at least two accommodating cavities, and fixing rods are arranged in the accommodating cavities and are in threaded connection with the side wall of the first connecting cylinder; the fixing rod is provided with a connector, and the outer wall of the connector inclines outwards. Excellent sealing performance can be achieved through the design; still prevented simultaneously that the hanger is at the inside vibration of connecting cylinder, makeed the utility model discloses locking ability has.
Description
Technical Field
The utility model belongs to the technical field of the petroleum machinery, specifically be a simple and easy oil gas well casing head.
Background
The casing head is often used for in the oil, natural gas exploitation process, installs in top layer casing string upper end, is the well head that is used for the fixed well drilling, connects the well head casing string for support technology sleeve pipe and oil reservoir sheathed tube coupling assembling, can be used to seal the annular space between each layer of pipe, for installation preventer, tubing head, the production tree provides transitional coupling, and through two side mouths on the connecting cylinder, can mend construction operations such as crowded mud, control and filling balanced liquid.
The main structure of the existing casing head is a connecting cylinder and a hanger, wherein the hanger is in threaded connection with the connecting cylinder, and the connecting cylinder is sealed by injecting grease. This easily causes unstable connection between the connecting cylinder and the hanger, and the sealing property is not ensured.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a simple and easy oil gas well casing head to the connecting cylinder and the hanger that propose the oil gas well casing head among the prior art among the solution background art are connected unstablely, and the leakproofness can not obtain the problem of guarantee.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:
a simple oil and gas well casing head comprises a connecting cylinder, wherein an installation cavity is arranged in the connecting cylinder and is used for connecting a hanger;
the connecting cylinder comprises a first connecting cylinder and a second connecting cylinder, and the first connecting cylinder is connected to the bottom of the second connecting cylinder; the top of the hanger is connected with the second connecting cylinder, the middle of the hanger is provided with a connecting part, and the connecting part is connected with the first connecting cylinder;
the outer wall of the connecting part is provided with a first-stage step, a second-stage step and a connecting lug; the inner wall of the first sleeve pipe body is provided with a first-stage step, a second-stage step and a third-stage step; the first-stage step is connected with the first-stage step; the second-level step is connected with the second-level step; the connecting lug is connected with the III-level step; the upper end surface of the connecting lug is arranged in a downward inclined manner; the side wall of the first connecting cylinder is provided with at least two accommodating cavities, fixing rods are arranged in the accommodating cavities, and the fixing rods are in threaded connection with the side wall of the first connecting cylinder; the first end of the fixed rod penetrates through the side wall of the first connecting cylinder and is positioned outside the first connecting cylinder; the second end of the fixed rod is provided with a connector, and the outer wall of the connector inclines outwards; the outer wall of the connector is in contact connection with the upper end face of the connecting bump; the fixing rod is used for fixing the position of the connecting part.
Further, the first connecting cylinder is connected with the second connecting cylinder through a bolt.
Further, a gasket is arranged between the first connecting cylinder and the second connecting cylinder.
Furthermore, a sealing gasket is arranged between the first-stage step and the first-stage step.
Furthermore, a sealing gasket is arranged between the second-stage step and the second-stage step.
Furthermore, a sealing gasket is arranged between the connecting lug and the III-level step.
Further, an O-shaped ring is arranged at the joint of the hanger and the second connecting cylinder.
Further, the outer wall of the first connecting cylinder is provided with a stabilizing block, and a threaded hole is formed in the stabilizing block.
Further, one side of the fixing rod close to the first end is in threaded connection with the stabilizing block.
Further, a hand wheel is arranged at the first end of the fixing rod.
Compared with the prior art, the utility model discloses following beneficial effect has:
the lower end face of the first-stage step is in contact connection with the upper end face of the first-stage step; the side wall of the first-stage step is contacted with the side wall of the second-stage step; the lower end surface of the second-level step is in contact connection with the upper end surface of the second-level step; the side wall of the second-level step is in contact connection with the side wall of the third-level step; the lower end face of the connecting lug is in contact connection with the upper end face of the III-level step; the design utilizes multistage cooperation, increases the stroke of oil leakage, makes the oil difficult to leak out, and ensures the sealing property.
Still designed the dead lever, because the dead lever is with first connecting cylinder threaded connection, through rotatory dead lever, make the lateral wall of connector and the up end contact of connecting the lug, because the up end of connecting the lug is the downward sloping, and the lateral wall of connector leans out, along with the connector lasts near connecting the lug, the up end of lug will be connected in the oppression to the lateral wall of connector, force the tight first connecting cylinder inner wall of whole connecting portion subsides, the leakproofness has further been promoted, still accomplished simultaneously and prevented that the hanger from vibrating in the inside production of connecting cylinder.
Drawings
FIG. 1 is a schematic view of the internal structure of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
fig. 3 is a partially enlarged view of a portion B of fig. 1.
The labels in the figure are: 1-a first connecting cylinder, 2-a hanger, 3-a stabilizing block, 4-a fixing rod, 5-a hand wheel, 6-a gasket, 7-a second connecting cylinder, 8-a level III step, 9-a level II step, 10-a level I step, 11-a sealing gasket, 12-a level step, 13-a level step, 14-a connector, 15-a containing cavity, 16-a connecting lug and 17-an O-shaped ring.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Examples
A simple oil gas well casing head comprises a connecting cylinder, wherein an installation cavity is arranged in the connecting cylinder and is used for connecting a hanger 2;
the connecting cylinder comprises a first connecting cylinder 1 and a second connecting cylinder 7, and the first connecting cylinder 1 is connected to the bottom of the second connecting cylinder 7; the top of the hanger 2 is connected with a second connecting cylinder 7, a connecting part is arranged in the middle of the hanger 2, and the connecting part is connected with the first connecting cylinder 1; the second connecting cylinder 7 presses the hanger 2 inside the first connecting cylinder 1.
The outer wall of the connecting part is provided with a first-stage step 12, a second-stage step 13 and a connecting bump 16; the inner wall of the first sleeve pipe body is provided with a first-stage step 10, a second-stage step 9 and a third-stage step 8; the first-stage step 12 is connected with the first-stage step 10; the second-stage step 13 is connected with the second-stage step 9; the connecting bump 16 is connected with the III-level step 8; the upper end face of the connecting projection 16 is arranged obliquely downward; the side wall of the first connecting cylinder 1 is provided with at least two accommodating cavities 15, the accommodating cavities 15 are internally provided with fixing rods 4, and the fixing rods 4 are in threaded connection with the side wall of the first connecting cylinder 1; the first end of the fixed rod 4 penetrates through the side wall of the first connecting cylinder 1 and is positioned outside the first connecting cylinder 1; a connector 14 is arranged at the second end of the fixed rod 4, and the outer wall of the connector 14 inclines outwards; the outer wall of the connector 14 is in contact connection with the upper end face of the connecting bump 16; the fixing lever 4 is used to fix the position of the connection portion.
When the connecting part is matched with the first connecting cylinder 1, the lower end face of the first-stage step 12 is in contact connection with the upper end face of the first-stage step 10; the side wall of the first-stage step 12 is contacted with the side wall of the second-stage step 9; the lower end face of the second-stage step 13 is in contact connection with the upper end face of the second-stage step 9; the side wall of the second-level step 13 is in contact connection with the side wall of the third-level step 8; the lower end face of the connecting lug 16 is in contact connection with the upper end face of the III-level step 8; the design utilizes multistage cooperation, increases the stroke of oil leakage, makes the oil difficult to leak out, and ensures the sealing property.
After connecting portion and first connecting cylinder 1 are well joined in marriage, because dead lever 4 is with 1 threaded connection of first connecting cylinder, through rotatory dead lever 4, make the lateral wall of connector 14 and the up end contact of connecting lug 16, because the up end of connecting lug 16 is the downward sloping, and the lateral wall of connector 14 leans out, along with connector 14 lasts to be close to connecting lug 16, the up end of connecting lug 16 will be oppressed to the lateral wall of connector 14, force whole connecting portion to paste tight first connecting cylinder 1 inner wall, the leakproofness has further been promoted, prevent simultaneously still to have accomplished to prevent that hanger 2 from producing the vibration inside the connecting cylinder, hanger 2 produces the vibration inside the connecting cylinder and can cause the relation of connection not hard up, the leakproofness reduces.
In a preferred embodiment, the first connecting cylinder 1 and the second connecting cylinder 7 are connected through bolts, and the bolts are stable and reliable, and meanwhile, the first connecting cylinder 1 and the second connecting cylinder 7 are convenient to disassemble and assemble.
In a preferred embodiment, a gasket 6 is arranged between the first connecting cylinder 1 and the second connecting cylinder 7, the gasket has certain elasticity, and after the first connecting cylinder 1 is connected with the second connecting cylinder 7 through a bolt, the gasket 6 can provide certain elasticity for preventing looseness. On the other hand, the gasket 6 also has a certain sealing function.
In a preferred embodiment, a sealing gasket 11 is disposed between the first step 12 and the first step 10. And a sealing gasket 11 is arranged between the second-stage step 13 and the second-stage step 9. A sealing gasket 11 is arranged between the connecting lug 16 and the level iii step 8. Seal ring 11 all adopts the rubber material, and the elasticity that has of rubber material can be stable compressed tightly between connecting portion and 1 lateral wall of first connecting cylinder, can provide excellent sealing capacity.
In a preferred embodiment, at least two O-rings 17 are provided at the connection of the hanger 2 and the second connecting cylinder 7, and at least two O-rings 17 are provided. The O-shaped ring 17 has certain elasticity, the O-shaped ring 17 ensures the sealing performance between the hanger 2 and the second connecting cylinder 7, meanwhile, the O-shaped ring 17 is high in wear resistance, and the sealing surface has an automatic elastic compensation function after being worn.
In a preferred embodiment, the outer wall of the first connecting cylinder 1 is provided with a stabilizing block 3, and the interior of the stabilizing block 3 is provided with a threaded hole. One side of the fixed rod 4 close to the first end is in threaded connection with the stabilizing block 3. Set up stabilizing block 3 is in order to increase 4 threaded connection's of dead lever length, guarantees the stability of dead lever 4, prevents that rocking from appearing in dead lever 4 for the connector 14 of 4 second ends of dead lever can be steady the pressure on the up end of connecting lug 16, thereby has restricted the position of connecting portion, has also strengthened the relation of being connected of connecting portion and first connecting cylinder 1, the effectual leakproofness that has promoted between connecting portion and the first connecting cylinder 1.
In a preferred embodiment, a hand wheel 5 is provided at the first end of the fixing rod, the hand wheel 5 being arranged to facilitate rotation of the fixing rod 4.
In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a simple and easy oil gas well casing head which characterized in that: the connecting device comprises a connecting cylinder, wherein an installation cavity is arranged in the connecting cylinder and is used for connecting a hanger (2); the connecting cylinder comprises a first connecting cylinder (1) and a second connecting cylinder (7), and the first connecting cylinder (1) is connected to the bottom of the second connecting cylinder (7);
the top of the hanger (2) is connected with the second connecting cylinder (7), the middle part of the hanger (2) is provided with a connecting part, and the connecting part is connected with the first connecting cylinder (1); the outer wall of the connecting part is provided with a first-stage step (12), a second-stage step (13) and a connecting bump (16); the inner wall of the first sleeve body is provided with a first-stage step (10), a second-stage step (9) and a third-stage step (8); the first-stage step (12) is connected with the first-stage step (10); the second-stage step (13) is connected with the second-stage step (9); the connecting bump (16) is connected with the III-level step (8); the upper end surface of the connecting convex block (16) is arranged obliquely downwards;
the side wall of the first connecting cylinder (1) is provided with at least two accommodating cavities (15), the accommodating cavities (15) are internally provided with fixing rods (4), and the fixing rods (4) are in threaded connection with the side wall of the first connecting cylinder (1); the first end of the fixed rod (4) penetrates through the side wall of the first connecting cylinder (1) and is positioned outside the first connecting cylinder (1); a connector (14) is arranged at the second end of the fixing rod (4), and the outer wall of the connector (14) inclines outwards; the outer wall of the connector (14) is in contact connection with the upper end face of the connecting bump (16); the fixing rod (4) is used for fixing the position of the connecting part.
2. The simple oil and gas well casing head of claim 1, wherein: the first connecting cylinder (1) is connected with the second connecting cylinder (7) through a bolt.
3. The simple oil and gas well casing head of claim 1, wherein: a gasket (6) is arranged between the first connecting cylinder (1) and the second connecting cylinder (7).
4. The simple oil and gas well casing head of claim 1, wherein: a sealing gasket (11) is arranged between the first-stage step (12) and the first-stage step (10).
5. The simple oil and gas well casing head of claim 1, wherein: a sealing gasket (11) is arranged between the second-stage step (13) and the second-stage step (9).
6. The simple oil and gas well casing head of claim 1, wherein: a sealing gasket (11) is arranged between the connecting convex block (16) and the III-level step (8).
7. The simple oil and gas well casing head of claim 1, wherein: an O-shaped ring (17) is arranged at the joint of the hanger (2) and the second connecting cylinder (7).
8. The simple oil and gas well casing head of claim 1, wherein: the outer wall of the first connecting cylinder (1) is provided with a stabilizing block (3), and a threaded hole is formed in the stabilizing block (3).
9. The simple oil and gas well casing head of claim 8, wherein: one side of the fixed rod (4) close to the first end is in threaded connection with the stabilizing block (3).
10. The simple oil and gas well casing head of claim 1, wherein: a hand wheel (5) is arranged at the first end of the fixed rod (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221320801.2U CN217632363U (en) | 2022-05-30 | 2022-05-30 | Simple oil-gas well casing head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221320801.2U CN217632363U (en) | 2022-05-30 | 2022-05-30 | Simple oil-gas well casing head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217632363U true CN217632363U (en) | 2022-10-21 |
Family
ID=83620562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221320801.2U Active CN217632363U (en) | 2022-05-30 | 2022-05-30 | Simple oil-gas well casing head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217632363U (en) |
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2022
- 2022-05-30 CN CN202221320801.2U patent/CN217632363U/en active Active
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| GR01 | Patent grant |