CN211950420U - Cutting sleeve type casing head - Google Patents
Cutting sleeve type casing head Download PDFInfo
- Publication number
- CN211950420U CN211950420U CN202020254820.4U CN202020254820U CN211950420U CN 211950420 U CN211950420 U CN 211950420U CN 202020254820 U CN202020254820 U CN 202020254820U CN 211950420 U CN211950420 U CN 211950420U
- Authority
- CN
- China
- Prior art keywords
- casing head
- head body
- casing
- locking ring
- sealing rings
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000007789 sealing Methods 0.000 claims description 17
- 239000004519 grease Substances 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 238000005553 drilling Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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Abstract
The utility model discloses a cutting sleeve type casing head, which comprises a casing head body (1) and a casing hanger (8); the locking ring (4) is sleeved at the bottom of the casing head body (1), the locking screw (2) is locked to prevent the locking ring (4) from falling off, and the limiting ring (3) is arranged at the bottom of the casing head body (1) and screwed tightly; the inner wall of the bottom of the casing head body (1) is provided with two FS sealing rings (5), the inner wall and the outer wall of the locking ring (4) are provided with O-shaped sealing rings (6), and the grease injection valve (7) is used for testing the sealing performance of the sealing rings through a pressure test hole; two outlets on the side surface of the casing head body (1) are provided with a flat gate valve (10), a union flange (11) and a pressure gauge (12); a casing hanger (8) is arranged on the upper part of the casing head body (1) and is tightly propped by a jackscrew (9), and a bolt and a nut (13) are arranged on the upper part of the casing head body (1); the whole body forms a cutting sleeve type casing head. The utility model discloses simple structure, it is sealed reliable, the installation of being convenient for.
Description
Technical Field
The utility model belongs to the oil drilling field, concretely relates to cutting ferrule formula casing head for well drilling.
Background
The casing head is mainly used for hanging and sealing a casing string, and performs operations such as slurry circulation, well cementation, testing and the like through a side outlet, and the existing common casing head is inconvenient to install when the field environment space is limited.
Disclosure of Invention
The utility model aims to provide a: the clamping sleeve type casing head is simple in structure, reliable in sealing and convenient to install.
The technical solution of the utility model is that: the cutting sleeve type casing head comprises a casing head body and a casing hanger; the locking ring is sleeved at the bottom of the casing head body, a locking screw on the locking ring just corresponds to a groove above the bottom of the casing head body, the locking screw is screwed down to prevent the locking ring from falling off, and the limiting ring is arranged at the bottom of the casing head body and screwed down; the inner wall of the bottom of the casing head body is provided with two FS sealing rings, the inner wall and the outer wall of the locking ring are provided with O-shaped sealing rings, and the grease injection valve is used for testing the sealing performance of the sealing rings through the pressure test holes; two outlets on the side surface of the casing head body are provided with a flat gate valve, a union flange and a pressure gauge; the upper part of the casing head body is provided with a casing hanger and is tightly propped by a jackscrew, and the upper part of the casing head body is provided with a bolt and a nut; the whole body forms a cutting sleeve type casing head.
The utility model has the advantages that:
1. a plurality of seals are arranged, and test holes are arranged among the seals, so that the sealing performance is stable;
2. a flat gate valve, a union flange and a pressure gauge are arranged on two outlets on the side surface of the casing head body, so that circulation is realized, and the safety performance is reliable;
3. the equipment has simple and compact structure, and is applied to single-cylinder double wells, single-cylinder multi-wells and environments in which common casing heads are inconvenient to install in field space.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic perspective view of the present invention;
in the figure: 1 casing head body; 2 locking the screw; 3, a limiting ring; 4, locking a ring; 5 FS-shaped sealing rings; 6O-shaped sealing rings; 7, a grease injection valve; 8 casing hanger; 9 a jackscrew assembly; 10 flat gate valve; 11 a union flange; 12 pressure gauge; 13 bolts and nuts.
Detailed Description
The technical scheme of the utility model is explained in the following with the attached drawings.
As shown in fig. 1 and 2, the ferrule type casing head comprises a casing head body 1 and a casing hanger 8; the locking ring 4 is sleeved at the bottom of the casing head body 1, the locking screw 2 on the locking ring 4 just corresponds to the groove above the bottom of the casing head body 1, the locking screw 2 is screwed down to prevent the locking ring 4 from falling off, and the limiting ring 3 is arranged at the bottom of the casing head body 1 and screwed down; the inner wall of the bottom of the casing head body 1 is provided with two FS sealing rings 5, the inner wall and the outer wall of the locking ring 4 are provided with O-shaped sealing rings 6, and the grease injection valve 7 is used for testing the sealing performance of the sealing rings through a pressure test hole; two outlets on the side surface of the casing head body 1 are provided with a flat gate valve 10, a union flange 11 and a pressure gauge 12; a casing hanger 8 is arranged on the upper part of the casing head body 1 and is tightly propped by a jackscrew 9, and a bolt nut 13 is arranged on the upper part of the casing head body 1; the whole body forms a cutting sleeve type casing head.
During installation, the bottom of the casing head body 1 is installed on a previous-stage casing head or a base, the locking screw 2 is unscrewed to enable the locking ring 4 to fall down, the locking ring 4 is rotated and the locking screw 2 is screwed, and the top of the casing head body 1 is connected with next-stage equipment through the casing hanger 8 and the bolt and nut 13.
Claims (1)
1. Cutting ferrule formula casing head, characterized by: the casing head comprises a casing head body (1) and a casing hanger (8); the locking ring (4) is sleeved at the bottom of the casing head body (1), the locking screw (2) on the locking ring (4) just corresponds to the groove above the bottom of the casing head body (1), the locking screw (2) is screwed down to prevent the locking ring (4) from falling off, and the limiting ring (3) is arranged at the bottom of the casing head body (1) and screwed down; the inner wall of the bottom of the casing head body (1) is provided with two FS sealing rings (5), the inner wall and the outer wall of the locking ring (4) are provided with O-shaped sealing rings (6), and the grease injection valve (7) is used for testing the sealing performance of the sealing rings through a pressure test hole; two outlets on the side surface of the casing head body (1) are provided with a flat gate valve (10), a union flange (11) and a pressure gauge (12); a casing hanger (8) is arranged on the upper part of the casing head body (1) and is tightly propped by a jackscrew (9), and a bolt and a nut (13) are arranged on the upper part of the casing head body (1); the whole body forms a cutting sleeve type casing head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020254820.4U CN211950420U (en) | 2020-03-05 | 2020-03-05 | Cutting sleeve type casing head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020254820.4U CN211950420U (en) | 2020-03-05 | 2020-03-05 | Cutting sleeve type casing head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211950420U true CN211950420U (en) | 2020-11-17 |
Family
ID=73188818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020254820.4U Active CN211950420U (en) | 2020-03-05 | 2020-03-05 | Cutting sleeve type casing head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211950420U (en) |
-
2020
- 2020-03-05 CN CN202020254820.4U patent/CN211950420U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |