CN220267650U - Casing head for oil extraction wellhead device - Google Patents
Casing head for oil extraction wellhead device Download PDFInfo
- Publication number
- CN220267650U CN220267650U CN202322070012.9U CN202322070012U CN220267650U CN 220267650 U CN220267650 U CN 220267650U CN 202322070012 U CN202322070012 U CN 202322070012U CN 220267650 U CN220267650 U CN 220267650U
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- Prior art keywords
- casing head
- casing
- head
- fixedly connected
- oil
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- 238000000605 extraction Methods 0.000 title claims abstract description 26
- 238000011084 recovery Methods 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 238000009434 installation Methods 0.000 claims description 25
- 238000001514 detection method Methods 0.000 claims description 9
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 241000191291 Abies alba Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
Abstract
The utility model relates to the technical field of casing heads, in particular to a casing head for an oil extraction wellhead device, which comprises a casing head, wherein the bottom end of the casing head is fixedly connected with a mounting shell, a mounting device is arranged in the mounting shell, a W slip is mounted above the inside of the casing head, the bottom end of the W slip is tightly attached to a sealing element, and the top end of the casing head is fixedly connected with an oil layer casing. Through the cooperation between motor, worm, incomplete worm wheel and the bayonet lock for the output of motor drives the worm and rotates, and the worm can drive the slow anticlockwise rotation of incomplete worm wheel, and the spout of incomplete worm wheel through the front end makes a plurality of bayonet locks remove to the centre simultaneously, inserts a plurality of bayonet locks in the breach of oil recovery well head, thereby fixes the casing head on oil recovery well head, is not utilizing connecting bolt to fix, thereby can not appear taking off the silk phenomenon, also can not install with the help of external instrument at the time of need user, has reduced user's labour.
Description
Technical Field
The utility model relates to the technical field of casing heads, in particular to a casing head for an oil extraction wellhead device.
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.
For example, although the casing head for an oil extraction wellhead device is disclosed in the patent publication No. CN113294115A, the casing head body can be pushed to rotate in a plane by the above document, so that the casing head body can be moved to a proper position for installation, when the casing head for an oil extraction wellhead device in the above document is used, the casing head is fixed on the oil extraction wellhead by using a plurality of connecting bolts, and the fixing manner of the connecting bolts has a certain defect, and in the use process, the casing head has a sealing function, so that the pressure inside the oil extraction wellhead can be fully impacted on the casing head, thereby causing the phenomenon that the connecting bolts can be broken, so that the casing head cannot be detached, and meanwhile, a user needs to screw the connecting bolts by means of an external tool when the connecting bolts are installed, and in order to keep sealing, the connecting bolts need to be screwed with a large force, so that the labor force of the user is increased.
Disclosure of Invention
The utility model aims to solve the problem that the casing head for the oil extraction wellhead device in the document has a sealing function, so that the pressure in the oil extraction wellhead can be totally impacted on the casing head, the connecting bolt can be broken, and can not be disassembled, meanwhile, when the connecting bolt is installed, a user can screw the connecting bolt by means of an external tool, and in order to keep sealing, the connecting bolt can be screwed by using a large force, so that the labor force of the user is increased, and the casing head for the oil extraction wellhead device is provided.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the utility model provides a casing head for oil recovery wellhead assembly, includes the casing head, the bottom rigid coupling of casing head has the installation shell, the inside of installation shell is provided with installation device, W slips are installed to the inside top of casing head, the bottom and the sealing member of W slips closely laminate, the top and the oil reservoir sleeve looks rigid coupling of casing head.
Preferably, the installation device comprises a motor, the outer wall of the motor is fixedly connected with the installation shell through a bracket, the output end of the motor is fixedly connected with a worm, the outer wall of the worm is meshed with an incomplete worm wheel, the front end of the incomplete worm wheel is in sliding connection with a plurality of clamping pins through sliding grooves, and the outer walls of the clamping pins are in sliding connection with the installation shell through sliding grooves.
Preferably, one ends of the four clamping pins are in sliding clamping connection with the oil extraction wellhead.
Preferably, the top end of the oil extraction wellhead is tightly attached to the surface casing, and the outer wall of the surface casing is fixedly connected with the casing head.
Preferably, the two sides above the installation shell are fixedly connected with support plates, and the bottom ends of the two support plates are fixedly connected with the output end of the hydraulic cylinder.
Preferably, the upper parts of two sides of the casing head are communicated with two pressure detection pipes, and the outer walls of the two pressure detection pipes are provided with pressure gauges.
The casing head for the oil extraction wellhead device has the beneficial effects that: through the cooperation between motor, worm, incomplete worm wheel and the bayonet lock, the external power supply of switch-on motor for the output of motor drives the worm and rotates, and the worm can drive the slow anticlockwise rotation of incomplete worm wheel, and the spout that incomplete worm wheel passed through the front end makes a plurality of bayonet locks remove to the centre simultaneously, inserts a plurality of bayonet locks in the breach of oil recovery well head, thereby fix the casing head on oil recovery well head, do not utilize connecting bolt to fix, thereby can not appear taking off the silk phenomenon, also can not install with the help of external instrument at the time of needs user, reduced user's labour.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic front plan view of the interconnect structure of FIG. 1;
FIG. 3 is a top plan schematic view of the mounting enclosure internal connection structure of FIG. 1;
fig. 4 is a schematic diagram of a connection structure at a in fig. 3.
In the figure: 1. casing head, 2, installation shell, 3, oil recovery well head, 4, installation device, 401, motor, 402, worm, 403, incomplete worm wheel, 404, bayonet lock, 4A1, supporting shoe, 5, backup pad, 6, pneumatic cylinder, 7, W slips, 8, sealing member, 9, reservoir casing, 10, pressure detection pipe, 11, manometer, 12, surface casing.
Detailed Description
The utility model is further described below with reference to the accompanying drawings:
example 1:
referring to fig. 1-4, in this embodiment: the utility model provides a casing head for oil recovery wellhead assembly, includes casing head 1, and casing head 1's bottom rigid coupling has installation shell 2, and installation shell 2's inside is provided with installation device 4, and W slips 7,W slips 7 are prior art to the inside top of casing head 1, do not make too much more details here, and W slips 7's bottom and sealing member 8 closely laminate, and W slips 7 are used for extrusion sealing member 8, and casing head 1's top and oil reservoir sleeve 9 looks rigid coupling, and oil reservoir sleeve 9 is used for deriving fluid.
The installation device 4 comprises a motor 401, a worm 402, an incomplete worm wheel 403 and a bayonet lock 404, wherein the outer wall of the motor 401 is fixedly connected with an installation shell 2 through a bracket, the type of the motor 401 is selected according to actual use requirements, the operation requirements are met, the output end of the motor 401 is fixedly connected with the worm 402, the output end of the motor 401 can drive the worm 402 to rotate, the outer wall of the worm 402 is in meshed connection with the incomplete worm wheel 403, the worm 402 drives the incomplete worm wheel 403 to slowly rotate, the front end of the incomplete worm wheel 403 is in sliding connection with a plurality of bayonet locks 404 through a sliding groove at the front end, when the incomplete worm wheel 403 rotates, the plurality of bayonet locks 404 are simultaneously moved to the middle or outwards through the sliding groove at the front end, the outer wall of the plurality of bayonet locks 404 are in sliding connection with the installation shell 2 through the sliding groove, one ends of the four bayonet locks 404 are in sliding clamping connection with a wellhead 3, and the four bayonet locks 404 are inserted into the wellhead 3, so that the wellhead 1 is installed on the wellhead 3;
the external power supply of the motor 401 is connected, so that the output end of the motor 401 drives the worm 402 to rotate, the worm 402 can drive the incomplete worm wheel 403 to slowly rotate anticlockwise, the incomplete worm wheel 403 enables a plurality of clamping pins 404 to move towards the middle through a chute at the front end, the plurality of clamping pins 404 are inserted into gaps of the oil extraction wellhead 3, the casing head 1 is fixed on the oil extraction wellhead 3, the casing head is not fixed by using connecting bolts, the phenomenon of wire falling cannot occur, meanwhile, a user is not required to install the casing head by means of external tools, and the labor force of the user is reduced.
The top of oil recovery well head 3 closely laminates with surface casing 12, gas flows to casing head 1 through between surface casing 12 and the oil reservoir sleeve 9, the outer wall of surface casing 12 is fixed with casing head 1 mutually, the top both sides of installation shell 2 all are fixed with backup pad 5, the bottom of two backup pads 5 all is fixed with the output of pneumatic cylinder 6 mutually, the model of pneumatic cylinder 6 is selected according to the in-service use demand, satisfy the work demand can, the output of pneumatic cylinder 6 promotes backup pad 5 and reciprocates, and then drive casing head 1 reciprocates, casing head 1's both sides top is linked together with two pressure detection pipes 10, casing head 1 can flow in the pressure detection pipe 10, manometer 11 is all installed to the outer wall of two pressure detection pipes 10, manometer 11 is arranged in detecting the pressure in the pressure detection pipe 10, the model of manometer 11 is selected according to the in-service use demand, satisfy the work demand can.
Working principle:
when the casing head for the oil extraction wellhead device is used, firstly, a user moves the casing head 1 to the upper side of the oil extraction wellhead 3, then adjusts the hydraulic cylinder 6, the output end of the hydraulic cylinder 6 drives the supporting plate 5 to move downwards, further drives the whole casing head 1 to move downwards, the oil extraction wellhead 3 is inserted into the installation shell 2 and is tightly attached to the surface casing 12, at the moment, the notch on the outer wall of the oil extraction wellhead 3 is just aligned with the bayonet catch 404, an external power supply of the motor 401 is connected, the output end of the motor 401 drives the worm 402 to rotate, the worm 402 can drive the incomplete worm wheel 403 to slowly rotate anticlockwise, the incomplete worm wheel 403 enables the bayonet catch 404 to move towards the middle at the same time through a chute at the front end, and the bayonet catch 404 is inserted into the notch of the oil extraction wellhead 3, so that the casing head 1 is fixed on the oil extraction wellhead 3, the phenomenon of wire removal cannot occur, meanwhile, the user can be installed by means of an external tool, labor force of the user is reduced, oil in the oil layer 3 is led out through the casing 9, the pressure in the oil extraction wellhead 3 is increased, the pressure inside the oil well 3 is detected by the pressure gauge 10, and the pressure in the oil extraction wellhead 3 is detected by the pressure gauge 10, and the pressure gauge is detected by the pressure gauge is used for detecting the pressure in the pressure gauge, and the pressure gauge is used for detecting the pressure in the pressure gauge, and the pressure is used for the pressure gauge is 10, and the pressure is well.
Example 2:
referring to fig. 1-4, in this embodiment: casing head for oil recovery wellhead assembly, wherein installation device 4 can also include supporting shoe 4A1, and the inner wall of two supporting shoes 4A1 all with incomplete worm wheel 403 sliding connection, supporting shoe 4A1 can be with the intermediate position of incomplete worm wheel 403 for support the rotation that incomplete worm wheel 403 arrived, and the outer wall of two supporting shoes 4A1 is fixedly connected with installation shell 2 mutually.
Working principle:
when the embodiment works, a user installs the supporting block 4A1 below the incomplete worm gear 403, so that the supporting block 4A1 can rotatably support the incomplete worm gear 403, and meanwhile, when the incomplete worm gear 403 receives impact force, the incomplete worm gear 403 is also transferred to the supporting block 4A1, so that the device is more stable, and the device is used.
While the utility model has been shown and described with reference to a preferred embodiment, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the scope of the utility model.
Claims (6)
1. Casing head for oil recovery wellhead assembly, including casing head (1), its characterized in that: the bottom rigid coupling of casing head (1) has installation shell (2), the inside of installation shell (2) is provided with installation device (4), W slips (7) are installed to the inside top of casing head (1), the bottom and the sealing member (8) of W slips (7) are closely laminated, the top and the oil reservoir sleeve (9) looks rigid coupling of casing head (1).
2. A casing head for an oil recovery wellhead assembly according to claim 1, wherein: the mounting device (4) comprises a motor (401), the outer wall of the motor (401) is fixedly connected with a mounting shell (2) through a support, the output end of the motor (401) is fixedly connected with a worm (402), the outer wall of the worm (402) is meshed with an incomplete worm wheel (403), the front end of the incomplete worm wheel (403) is in sliding connection with a plurality of clamping pins (404) through sliding grooves, and the outer wall of each clamping pin (404) is in sliding connection with the mounting shell (2) through sliding grooves.
3. A casing head for an oil recovery wellhead assembly according to claim 2, wherein: one end of each of the four clamping pins (404) is in sliding clamping connection with the oil extraction wellhead (3).
4. A casing head for a wellhead assembly according to claim 3, wherein: the top of the oil extraction wellhead (3) is tightly attached to the surface casing (12), and the outer wall of the surface casing (12) is fixedly connected with the casing head (1).
5. A casing head for an oil recovery wellhead assembly according to claim 1, wherein: the two sides above the installation shell (2) are fixedly connected with support plates (5), and the bottom ends of the two support plates (5) are fixedly connected with the output end of the hydraulic cylinder (6).
6. A casing head for an oil recovery wellhead assembly according to claim 1, wherein: the upper parts of two sides of the casing head (1) are communicated with two pressure detection pipes (10), and pressure gauges (11) are arranged on the outer walls of the two pressure detection pipes (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322070012.9U CN220267650U (en) | 2023-08-02 | 2023-08-02 | Casing head for oil extraction wellhead device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322070012.9U CN220267650U (en) | 2023-08-02 | 2023-08-02 | Casing head for oil extraction wellhead device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220267650U true CN220267650U (en) | 2023-12-29 |
Family
ID=89300468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322070012.9U Active CN220267650U (en) | 2023-08-02 | 2023-08-02 | Casing head for oil extraction wellhead device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220267650U (en) |
-
2023
- 2023-08-02 CN CN202322070012.9U patent/CN220267650U/en active Active
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