CN221322349U - Anti-inversion thermal production casing head hanger - Google Patents
Anti-inversion thermal production casing head hanger Download PDFInfo
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- CN221322349U CN221322349U CN202421346184.2U CN202421346184U CN221322349U CN 221322349 U CN221322349 U CN 221322349U CN 202421346184 U CN202421346184 U CN 202421346184U CN 221322349 U CN221322349 U CN 221322349U
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- falling
- connecting pipe
- upper connecting
- sealing
- pin
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 238000007789 sealing Methods 0.000 claims abstract description 50
- 239000000725 suspension Substances 0.000 claims abstract description 20
- 238000011084 recovery Methods 0.000 claims description 13
- 238000005553 drilling Methods 0.000 abstract description 3
- 239000003208 petroleum Substances 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000011324 bead Substances 0.000 abstract 1
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- Supports For Pipes And Cables (AREA)
Abstract
The utility model relates to the technical field of petroleum drilling casing heads, in particular to an anti-inversion thermal production casing head hanger. The technical proposal is as follows: the upper end of the sealing pipe is connected with an upper connecting pipe, a hanging body, a sealing piece and a pressure plate are arranged on the outer wall of the upper side of the sealing pipe, and a limit groove is arranged on the outer wall of the hanging body and is used for being matched with a jackscrew arranged in a thermal production casing head; the upper side of the suspension body is provided with a bolt hole and an anti-falling pin hole, and a bolt is arranged in the bolt hole; the anti-falling pin is arranged in the anti-falling pin hole, and the upper part of the anti-falling pin extends out of a part and contacts with a key groove at the lower end of the upper connecting pipe to prevent the upper connecting pipe from reversing. The beneficial effects are that: according to the utility model, the plurality of anti-falling pins are arranged in the suspension body to prevent the relative rotation between the upper connecting pipe and the suspension body, so that the sleeve connected with the suspension device is prevented from retracting; on the other hand, through setting up the anti-drop circular bead in the upper portion of sealed tube, prevent that casing string from retracting and descending, can realize the free change of accessories such as takeover.
Description
Technical Field
The utility model relates to the technical field of petroleum drilling casing heads, in particular to an anti-inversion thermal production casing head hanger.
Background
At present, the conventional thermal production hanger used in petroleum drilling and oil production is generally of a mandrel type, a slip type and a piston type, and once the mandrel hanger is damaged by threads in use, the hanger cannot be disassembled, so that well head failure and even well control failure can be caused. The slips hanger is used for clamping the sleeve through slips, the upper connecting wellhead is sealed through the outer circle part of the sleeve, and once the outer circle of the sleeve is corroded and damaged, the wellhead sealing is also invalid. The piston hanger is particularly difficult and cumbersome to replace due to the small space in which the seal is located within the piston bore. In addition, the hanger used in the thermal production well is also of a straight-through type or a straight-connecting type, when the hanger with the structures is operated for replacing the upper part accessory, after the replacement accessory is disassembled, the sleeve connected with the hanger is retracted frequently, so that the new accessory cannot be restored to the original installation position, the connection and the sealing are affected, the existing anti-screw thread reverse structure is too complex, the cost is higher, the disassembly process is complex, and the operation is not easy.
Disclosure of utility model
The utility model aims at solving the defects existing in the prior art, and provides an anti-reverse thermal recovery casing head hanger, wherein a plurality of anti-reverse pins are arranged in a hanger body, the anti-reverse pins can freely stretch out and draw back in anti-reverse pin holes and are matched with key grooves of the lower end face of an upper connecting pipe contacted with the hanger body, when accessories above the upper connecting pipe are replaced, the relative rotation between the upper connecting pipe and the hanger body is prevented, and in the process of replacing the upper connecting pipe, the sleeve connected with the hanger can be prevented from retracting, so that the possible problems can be effectively solved.
The utility model relates to an anti-inversion thermal recovery casing head hanger, which adopts the technical scheme that: the sealing device comprises a sealing pipe, an upper connecting pipe, a hanging body, a sealing element, a pressure plate, an anti-falling pin, a pressure spring and a pin, wherein the upper end of the sealing pipe is connected with the upper connecting pipe; the upper side of the suspension body is provided with more than one bolt hole and more than one anti-falling bolt hole, and bolts are installed in the bolt holes; the anti-falling pin is arranged in the anti-falling pin hole, a pin is arranged in an inner hole of the anti-falling pin, a pressure spring is arranged on the outer side of the pin, and the upper part of the anti-falling pin extends out of a part and contacts with a key groove at the lower end of the upper connecting pipe to prevent the upper connecting pipe from reversing.
Preferably, the bolt longitudinally passes through the limit groove, the middle part of the bolt is exposed at the middle part of the limit groove, and the end part of the jackscrew is matched with the bolt to prevent the hanging body from rotating.
Preferably, a circle of convex anti-falling shoulders are arranged on the upper side of the outer wall of the sealing tube, and an inner hole step matched with the anti-catch platform shoulders is arranged on the inner wall of the upper end of the hanging body.
Preferably, the pressure plate has a circular ring structure, a circular groove is formed in the middle of the upper surface of the pressure plate, and sealing elements are respectively arranged on the inner side and the outer side of the circular groove.
Preferably, the lower end of the upper connecting pipe is provided with more than one group of convex keys and key grooves which are arranged at intervals.
Preferably, the lower end of the suspension body is provided with a limiting protrusion, the limiting protrusion is matched with the circular groove, and the length of the limiting protrusion is greater than the depth of the circular groove.
The beneficial effects of the utility model are as follows: according to the utility model, on one hand, the plurality of anti-falling pins are arranged in the suspension body, the anti-falling pins can freely stretch out and draw back in the anti-falling pin holes, and are matched with the key grooves of the lower end face of the upper connecting pipe contacted with the suspension body, so that the relative rotation between the upper connecting pipe and the suspension body is prevented, and the sleeve connected with the suspension device is prevented from retracting; on the other hand, by arranging the anti-falling shoulder on the upper part of the sealing pipe, when the upper connecting pipe is replaced, the upper connecting pipe can be conveniently detached only by pressing the anti-falling pin into the anti-falling pin hole of the hanging body, after the upper connecting pipe is detached, the anti-falling shoulder of the sealing pipe connected with the lower casing string can be hung on the inner hole step of the hanging body, the casing string is prevented from retracting and descending, and free replacement of accessories such as the upper connecting pipe can be realized; in order to prevent the sealing element of the hanger from being damaged due to excessive compression, a limiting protrusion is arranged between the lower part of the hanger body and the pressure plate, and after the sealing element is compressed to a certain amount, the limiting protrusion is in contact with the bottom surface of the circular groove of the pressure plate, and the sealing element is not compressed any more, so that the sealing element is protected from being damaged due to excessive compression.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is an enlarged schematic view of portion A of FIG. 1;
FIG. 3 is a schematic perspective view of the present utility model;
FIG. 4 is an enlarged schematic view of portion B of FIG. 3;
FIG. 5 is an enlarged partial schematic view of the connection of the suspension body to the upper joint and the sealing tube;
FIG. 6 is a partial perspective view of the suspension body;
FIG. 7 is a schematic structural view of a seal tube;
FIG. 8 is a partial schematic view of a pressure plate;
FIG. 9 is a schematic perspective view of a pressure plate;
FIG. 10 is a schematic view of the overall construction of the upper adapter;
FIG. 11 is a partial schematic construction of an upper adapter;
FIG. 12 is a schematic view of the construction of the upper adapter in the front view;
FIG. 13 is a schematic view of the overall installation of the present utility model;
In the upper graph: the device comprises an upper connecting pipe 1, a hanging body 2, a sealing piece 3, a pressure plate 4, a sealing pipe 5, an anti-falling pin 6, a pressure spring 7, a pin 8, a thermal production casing head 9, a bolt 10, a jackscrew 11, a convex key 1.1, a key slot 1.2, a bolt hole 2.1, an anti-falling pin hole 2.2, a limiting bulge 2.3, an upper end face 2.4, a limiting groove 2.5, a circular groove 4.1 and an anti-catch platform shoulder 5.1.
Detailed Description
The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present utility model only, and are not intended to limit the present utility model.
1, Referring to fig. 1-13, the anti-inversion thermal recovery casing head hanger comprises a sealing tube 5, an upper connecting tube 1, a hanging body 2, a sealing element 3, a pressure plate 4, an anti-inversion pin 6, a pressure spring 7 and a pin 8, wherein the upper end of the sealing tube 5 is connected with the upper connecting tube 1, the hanging body 2, the sealing element 3 and the pressure plate 4 are arranged on the outer wall of the upper side of the sealing tube 5, the sealing element 3 is arranged between the upper surface of the pressure plate 4 and the hanging body 2, and a limiting groove 2.5 is arranged on the outer wall of the hanging body 2 and is used for being matched with a jackscrew 11 arranged in a thermal recovery casing head 9; the upper end face 2.4 of the suspension body 2 is provided with more than one bolt hole 2.1 and more than one anti-falling pin hole 2.2, and a bolt 10 is arranged in the bolt hole 2.1; the anti-falling pin hole 2.2 is internally provided with an anti-falling pin 6, a pin 8 is arranged in an inner hole of the anti-falling pin 6, a pressure spring 7 is arranged on the outer side of the pin 8, and the upper part of the anti-falling pin 6 extends out of a part and is contacted with a key groove 1.2 at the lower end of the upper connecting pipe 1, so that the upper connecting pipe 1 is prevented from being reversed.
The bolt 10 longitudinally passes through the limit groove 2.5, the middle part of the bolt 10 is exposed at the middle part of the limit groove 2.5, and the end part of the jackscrew 11 is matched with the bolt 10 to prevent the hanging body 2 from rotating and moving.
Referring to fig. 7, a circle of convex anti-falling shoulders 5.1 are arranged on the upper side of the outer wall of the sealing tube 5, and an inner hole step matched with the anti-falling shoulders 5.1 is arranged on the inner wall of the upper end of the hanging body 2.
Referring to fig. 8 and 9, the pressure plate 4 is in a circular ring structure, a circular groove 4.1 is formed in the middle of the upper surface of the pressure plate 4, and sealing elements 3 are respectively arranged on the inner side and the outer side of the circular groove 4.1.
Referring to fig. 10-12, the lower end of the upper connecting pipe 1 is provided with more than one group of convex keys 1.1 and key grooves 1.2 which are arranged at intervals.
Referring to fig. 5-6, the lower end of the hanging body 2 is provided with a limiting protrusion 2.3, the limiting protrusion 2.3 is matched with the circular groove 4.1, and the length of the limiting protrusion 2.3 is larger than the depth of the circular groove 4.1.
When the thermal recovery sleeve head is used, three bolts 10 are arranged in the circumferential direction of the suspension body 2, and the bolts 10 longitudinally penetrate through the limit grooves 2.5, the middle parts of the bolts 10 are exposed at the middle parts of the limit grooves 2.5, so that the suspension body 2 is prevented from rotating under the contact action of the end parts of jackscrews 11 arranged on the thermal recovery sleeve head 9 and the bolts 10; three anti-falling pins 6 are arranged on the upper end surface 2.4 of the suspension body 2, the anti-falling pins 6 are connected into the anti-falling pin holes 2.2 of the suspension body 2 through pins 8 and pressure springs 7, and under the action of the pressure springs 7, the anti-falling pins 6 can freely stretch out and draw back in the anti-falling pin holes 2.2; four key grooves 1.2 and convex keys 1.1 are arranged on the lower end face of the upper connecting pipe 1 contacted with the hanging body 2, and when the lower end face of the upper connecting pipe 1 is attached to the upper end face of the hanging body 2, at least three anti-falling pins 6 can extend into the key grooves 1.2 on the lower end face of the upper connecting pipe 1 so as to prevent relative rotation between the upper connecting pipe 1 and the hanging body 2; the anti-falling pin 6 is positioned in the anti-falling pin hole 2.2 through the pin 8 and the pressure spring 7, the anti-falling shoulder 5.1 is arranged at the upper part of the sealing pipe 5, and when the upper connecting pipe 1 is replaced, the upper connecting pipe 1 can be conveniently detached by only pressing the anti-falling pin 6 into the anti-falling pin hole 2.2 of the hanging body 2; after the upper connecting pipe 1 is disassembled, an anti-falling shoulder 5.1 of a sealing pipe 5 connected with a lower casing string can be hung on an inner hole step of the hanging body 2, the casing string is prevented from retracting and descending, free replacement of accessories such as the upper connecting pipe 1 can be realized, and the anti-falling shoulder is simple in structure, low in cost, simple in disassembly process and easy to operate.
In addition, in order to prevent the damage of the sealing member 3 caused by excessive compression of the sealing member 3 of the hanger 2, the lower end of the hanger body 2 is provided with a limiting protrusion 2.3, the limiting protrusion 2.3 is matched with the circular groove 4.1, the length of the limiting protrusion 2.3 is larger than the depth of the circular groove 4.1, after the sealing member 3 is compressed to a certain amount, the limiting protrusion 2.3 of the hanger body 2 is in contact with the bottom surface of the circular groove 4.1 of the pressure plate 4, and the sealing member 3 is not compressed any more, so that the sealing member 1 is protected from damage caused by excessive compression.
Embodiment 2, the utility model relates to an anti-reverse thermal production casing head hanger, which adopts the following technical scheme: the sealing device comprises a sealing tube 5, and further comprises an upper connecting tube 1, a hanging body 2, a sealing element 3, a pressure plate 4, an anti-falling pin 6, a pressure spring 7 and a pin 8, wherein the upper end of the sealing tube 5 is connected with the upper connecting tube 1, the hanging body 2, the sealing element 3 and the pressure plate 4 are arranged on the outer wall of the upper side of the sealing tube 5, the sealing element 3 is arranged between the upper surface of the pressure plate 4 and the hanging body 2, and a limiting groove 2.5 is arranged on the outer wall of the hanging body 2 and is used for being matched with a jackscrew 11 arranged in a thermal recovery casing head 9; the upper side of the suspension body 2 is provided with more than one bolt hole 2.1 and more than one anti-falling pin hole 2.2, and a bolt 10 is arranged in the bolt hole 2.1; the anti-falling pin hole 2.2 is internally provided with an anti-falling pin 6, a pin 8 is arranged in an inner hole of the anti-falling pin 6, a pressure spring 7 is arranged on the outer side of the pin 8, and the upper part of the anti-falling pin 6 extends out of a part and is contacted with a key groove 1.2 at the lower end of the upper connecting pipe 1, so that the upper connecting pipe 1 is prevented from being reversed.
The difference from example 1 is that:
The anti-falling pin 6 can be of a round or square structure, and the number and the shape of the key grooves 1.2 and the convex keys 1.1 arranged at the lower end of the upper connecting pipe 1 can be set into a plurality of shapes and other shapes according to the applied force; the limiting contact surface between the suspension body 2 and the pressure plate 4 can be annular or have other shapes.
The above description is of the preferred embodiments of the present utility model, and any person skilled in the art may modify the present utility model or make modifications to the present utility model with the technical solutions described above. Therefore, any simple modification or equivalent made according to the technical solution of the present utility model falls within the scope of the protection claimed by the present utility model.
Claims (6)
1. An anti-inversion thermal recovery casing head hanger comprises a sealing tube (5), and is characterized in that: the hot production sleeve comprises a hot production sleeve head (9), and is characterized by further comprising an upper connecting pipe (1), a hanging body (2), a sealing element (3), a pressure plate (4), an anti-falling pin (6), a pressure spring (7) and a pin (8), wherein the upper end of the sealing pipe (5) is connected with the upper connecting pipe (1), the hanging body (2), the sealing element (3) and the pressure plate (4) are arranged on the outer wall of the upper side of the sealing pipe (5), the sealing element (3) is arranged between the upper surface of the pressure plate (4) and the hanging body (2), and a limiting groove (2.5) is formed in the outer wall of the hanging body (2) and is used for being matched with a jackscrew (11) arranged in the hot production sleeve head (9); the upper side of the suspension body (2) is provided with more than one bolt hole (2.1) and more than one anti-falling pin hole (2.2), and a bolt (10) is arranged in the bolt hole (2.1); an anti-falling pin (6) is arranged in the anti-falling pin hole (2.2), a pin (8) is arranged in an inner hole of the anti-falling pin (6), a pressure spring (7) is arranged on the outer side of the pin (8), and the upper part of the anti-falling pin (6) extends out to a part and is contacted with a key groove (1.2) at the lower end of the upper connecting pipe (1) so as to prevent the upper connecting pipe (1) from being reversed.
2. The anti-inversion thermal recovery casing head hanger of claim 1, wherein: the bolt (10) longitudinally passes through the limit groove (2.5), the middle part of the bolt (10) is exposed at the middle part of the limit groove (2.5), and the end part of the jackscrew (11) is matched with the bolt (10) to prevent the hanging body (2) from rotating and moving.
3. The anti-inversion thermal recovery casing head hanger of claim 2, wherein: the upper side of the outer wall of the sealing tube (5) is provided with a circle of convex anti-falling shoulder (5.1), and the inner wall of the upper end of the hanging body (2) is provided with an inner hole step matched with the anti-falling shoulder (5.1).
4. The anti-inversion thermal recovery casing head hanger of claim 3, wherein: the pressure plate (4) is of a circular ring structure, a circular groove (4.1) is formed in the middle of the upper surface of the pressure plate (4), and sealing elements (3) are respectively arranged on the inner side and the outer side of the circular groove (4.1).
5. The anti-backup thermal recovery casing head hanger of claim 4, wherein: the lower end of the upper connecting pipe (1) is provided with more than one group of convex keys (1.1) and key grooves (1.2), and the convex keys and the key grooves are arranged at intervals.
6. The anti-backup thermal recovery casing head hanger of claim 5, wherein: the lower extreme of hanging body (2) is equipped with spacing arch (2.3), cooperates with circular recess (4.1) through spacing arch (2.3), just the length of spacing arch (2.3) is greater than the degree of depth of circular recess (4.1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421346184.2U CN221322349U (en) | 2024-06-13 | 2024-06-13 | Anti-inversion thermal production casing head hanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421346184.2U CN221322349U (en) | 2024-06-13 | 2024-06-13 | Anti-inversion thermal production casing head hanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221322349U true CN221322349U (en) | 2024-07-12 |
Family
ID=91792547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421346184.2U Active CN221322349U (en) | 2024-06-13 | 2024-06-13 | Anti-inversion thermal production casing head hanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221322349U (en) |
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2024
- 2024-06-13 CN CN202421346184.2U patent/CN221322349U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant |