CN219910665U - Double-layer heat-insulating high-adhesiveness petroleum casing pipe - Google Patents
Double-layer heat-insulating high-adhesiveness petroleum casing pipe Download PDFInfo
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- CN219910665U CN219910665U CN202321059001.4U CN202321059001U CN219910665U CN 219910665 U CN219910665 U CN 219910665U CN 202321059001 U CN202321059001 U CN 202321059001U CN 219910665 U CN219910665 U CN 219910665U
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- pipe body
- sealing
- fixed block
- petroleum casing
- double
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- 239000003208 petroleum Substances 0.000 title claims abstract description 32
- 230000000712 assembly Effects 0.000 claims abstract description 5
- 238000000429 assembly Methods 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims description 43
- 230000007246 mechanism Effects 0.000 claims description 17
- 238000009413 insulation Methods 0.000 claims description 7
- 239000012774 insulation material Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 9
- 239000004568 cement Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 4
- 239000000853 adhesive Substances 0.000 abstract description 3
- 230000001070 adhesive effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- Thermal Insulation (AREA)
Abstract
The utility model discloses a double-layer heat-insulating high-adhesiveness petroleum casing pipe, which comprises an inner pipe body and an outer pipe body, wherein the outer pipe body is sleeved on the outer side of the inner pipe body and is rotationally connected with the inner pipe body; a plurality of groups of fixed block assemblies are arranged on the outer circumferential surface of the inner pipe body at intervals along the axial direction, each fixed block assembly comprises a plurality of mounting grooves arranged along the same circumference, 1 first spring is fixedly connected in each mounting groove, and the outer side ends of the first springs are fixedly connected with fixed blocks; and the outer pipe body is provided with a perforation matched with the fixed block for use. When the structure is utilized to fix the well cementation cement, the adhesive force can be improved, the fixing effect is better, meanwhile, in the well entering process, the fixing block does not extend out, the well entering cannot be influenced, the use effect is better, and the device is convenient to popularize and use in industry.
Description
Technical Field
The utility model relates to the technical field of oil casing structures for oil and gas drills, in particular to a double-layer heat-insulating high-adhesiveness petroleum casing.
Background
Petroleum casings are commonly used in the field of oil and gas extraction as pipelines that are commonly used to support the walls of oil and gas wells. Petroleum casing is a disposable consumable that typically includes a collar-type oil casing and a direct-connection-type oil casing. With the continuous improvement of technology, the structure of petroleum casing pipes in industry is also continuously improved to improve the performance of petroleum casing pipes, so as to meet the use demands of users.
Disclosure of Invention
The utility model aims to provide a double-layer heat-insulating high-adhesiveness petroleum casing pipe for meeting the use requirements of users.
In order to achieve the above purpose, the technical scheme provided by the utility model is as follows:
the double-layer heat-insulating high-adhesiveness petroleum casing pipe comprises an inner pipe body and an outer pipe body, wherein the outer pipe body is sleeved on the outer side of the inner pipe body and is in rotary connection with the inner pipe body;
a plurality of groups of fixed block assemblies are arranged on the outer circumferential surface of the inner pipe body at intervals along the axial direction, each fixed block assembly comprises a plurality of mounting grooves arranged along the same circumference, 1 first spring is fixedly connected in each mounting groove, and the outer side ends of the first springs are fixedly connected with fixed blocks;
the outer pipe body is provided with a perforation matched with the fixed block for use;
a heat insulation cavity is arranged between the outer pipe body and the inner pipe body, and heat insulation materials are filled in the heat insulation cavity.
Wherein, fixed block subassembly is 3 groups.
Wherein each fixed block assembly comprises 4 or 6 mounting slots.
The rotary limiting mechanism comprises a plurality of groups of limiting units, each group of limiting units comprises a limiting column mounted on the left end face of the inner pipe body and an arc-shaped groove matched with the limiting column for use, the limiting column is located at one end of the arc-shaped groove and in sliding connection, a second spring is fixedly connected in the arc-shaped groove, one end of the second spring is fixedly connected with the arc-shaped groove, and the other end of the second spring is fixedly connected with the side face of the limiting column.
Wherein, the tip of fixed block is the toper.
The left end of the petroleum casing pipe is provided with an external thread connecting mechanism, and the right end of the petroleum casing pipe is provided with an internal thread connecting mechanism;
the external thread connecting mechanism comprises a sealing groove, an external thread, an external sealing conical surface and an external torque shoulder which are sequentially arranged from inside to outside;
the internal thread connecting mechanism comprises a sealing surface, an internal thread, an internal sealing conical surface and an internal torque shoulder which are sequentially arranged from outside to inside;
the outer torque shoulder is matched with the inner torque shoulder for use and is connected in an interference fit manner; the outer sealing conical surface is matched with the inner sealing conical surface for use and is connected in an interference fit manner; the external thread is in threaded connection with the internal thread; the sealing groove is internally provided with a sealing ring, and the sealing surface is in sealing connection with the sealing ring.
Compared with the prior art, the utility model has the beneficial effects that:
the outer side end surface of the petroleum casing is a smooth surface, and when the petroleum casing is fixed with the outside well cementation cement, the fixing effect is poor and the petroleum casing is easy to move, so that the petroleum casing is provided with the fixing block assembly, and the fixing blocks in the fixing block assembly are arranged in a dislocation manner with the perforation in the process of entering the petroleum casing and do not extend out; after waiting to go into the well, rotatory outside body makes the fixed block correspond with perforation position, and the fixed block stretches out from the perforation under the effect of first spring elasticity, utilizes this structure to be in the fixed time of well cementation cement, can improve adhesive force, and fixed effect is better, simultaneously, at the well in-process of going into, because the fixed block does not stretch out, also can not influence into the well, excellent in use effect, is convenient for promote in industry and use.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present utility model;
in the figure, a first amplifying part 1, an inner pipe body 2, a second amplifying part 3, a heat insulation cavity 4, an outer pipe body 5 and a third amplifying part 6;
FIG. 2 is a schematic diagram of a first amplifying section according to an embodiment of the present utility model;
in the figure, a sealing groove 11, an external thread 12, an external sealing conical surface 13 and an external torque shoulder 14;
FIG. 3 is a schematic diagram of a second amplifying section according to an embodiment of the present utility model;
in the figure, a through hole 31, a fixed block 32, a first spring 33;
FIG. 4 is a schematic diagram of a third amplifying section according to an embodiment of the present utility model;
in the figure, a sealing surface 61, an internal thread 62, an internal sealing conical surface 63 and an internal torque shoulder 64;
FIG. 5 is a schematic view of a rotation limiting mechanism according to an embodiment of the present utility model;
in the figure, an arc-shaped groove 7, a second spring 8 and a limit post 9;
fig. 6 shows another embodiment of the structure of the fixing block of the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the description of this patent, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "disposed" are to be construed broadly, and may be fixedly connected, disposed, detachably connected, disposed, or integrally connected, disposed, for example. The specific meaning of the terms in this patent will be understood by those of ordinary skill in the art as the case may be.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
As shown in fig. 1-6, an embodiment of the present utility model is structured.
The embodiment provides a double-layer heat-insulating high-adhesiveness petroleum casing pipe, which comprises an inner pipe body 2 and an outer pipe body 5, wherein the outer pipe body 5 is sleeved on the outer side of the inner pipe body 2 and is in rotary connection, and the inner pipe body and the outer pipe body can rotate relatively;
a plurality of groups of fixed block assemblies are arranged on the outer circumferential surface of the inner pipe body 2 at intervals along the axial direction, each fixed block assembly comprises a plurality of mounting grooves arranged along the same circumference, each mounting groove is fixedly connected with 1 first spring 33, the outer side end of each first spring 33 is fixedly connected with a fixed block 32, and the first springs 33 can provide elasticity;
the outer pipe body 5 is provided with a perforation 31 which is matched with the fixed block 32 for use;
a heat insulation cavity 4 is arranged between the outer pipe body 5 and the inner pipe body 2, and heat insulation materials are filled in the heat insulation cavity 4.
It should be noted that the outer side end surface of the common petroleum casing is a smooth surface, and when the common petroleum casing is fixed with the outside well cementation cement, the fixing effect is poor and the common petroleum casing is easy to move, so the utility model is provided with the fixing block assembly, and the fixing block in the fixing block assembly is arranged in a dislocation way with the perforation in the well entering process of the petroleum casing and does not extend out; after the well is drilled, the outer pipe body is rotated to enable the fixing block to correspond to the perforation position, the fixing block stretches out of the perforation under the action of the elastic force of the first spring, the adhesive force can be improved when the well cementation cement is fixed by the structure, the fixing effect is good, and meanwhile, the well is not affected because the fixing block does not stretch out in the well drilling process.
It should be noted that the fixed block assemblies are 3 groups. Each mounting block assembly includes 4 or 6 mounting slots.
It should be noted that, the petroleum casing pipe that this embodiment provided includes rotatory stop gear, rotatory stop gear includes multiunit stop unit, and every group stop unit all includes 1 spacing post 9 of installing inside body 2 left end face, with the arc wall 7 of spacing post 9 cooperation use, spacing post 9 is located the one end and sliding connection of arc wall 7, fixedly connected with second spring 8 in the arc wall 7, the one end and the arc wall 7 fixed connection of second spring 8, the other end and the spacing post 9 side fixed connection.
In the initial state, the fixing block does not protrude from the through hole. After entering the well, the outer pipe body is rotated, so that the limit column moves from one end to the other end, at the moment, the fixed block just corresponds to the perforation position and stretches out from the perforation, the mechanism is convenient to rotate, and the accuracy and efficiency of operation are improved.
Preferably, the end of the fixed block 32 is tapered.
Preferably, the left end of the petroleum casing pipe is provided with an external thread connecting mechanism, and the right end of the petroleum casing pipe is provided with an internal thread connecting mechanism;
the external thread connecting mechanism comprises a sealing groove 11, an external thread 12, an external sealing conical surface 13 and an external torque shoulder 14 which are sequentially arranged from inside to outside;
the internal thread connecting mechanism comprises a sealing surface 61, an internal thread 62, an internal sealing conical surface 63 and an internal torque shoulder 64 which are sequentially arranged from outside to inside;
the outer torque shoulder 14 is used in conjunction with the inner torque shoulder 64 and is an interference fit connection; the outer sealing conical surface 13 is matched with the inner sealing conical surface 63 for use and is connected in an interference fit manner; the external thread 12 is in threaded connection with the internal thread 62; a sealing ring is arranged in the sealing groove 11, and the sealing surface 61 is in sealing connection with the sealing ring.
It is to be noted that, the sealing surface is in interference fit with the sealing ring sealing structure all the time when using, and the internal sealing conical surface, the external sealing conical surface gradually go to the pre-tightening interference from the clearance contact, finally constitutes metal-to-metal interference sealing structure, has strengthened the leakproofness. In addition, when the internal torque shoulder and the external torque shoulder are used, the two shoulders are gradually in interference from the clearance contact, and when external force applies torque, the external torque-resisting device can play a role in resisting torque, and the compression-resisting and reactive torque-resisting effects are improved.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (6)
1. The double-layer heat-insulating high-adhesiveness petroleum casing pipe is characterized by comprising an inner pipe body (2) and an outer pipe body (5), wherein the outer pipe body (5) is sleeved on the outer side of the inner pipe body (2) and is rotationally connected;
a plurality of groups of fixed block assemblies are arranged on the outer circumferential surface of the inner pipe body (2) at intervals along the axial direction, each fixed block assembly comprises a plurality of mounting grooves arranged along the same circumference, 1 first spring (33) is fixedly connected in each mounting groove, and a fixed block (32) is fixedly connected to the outer side end of each first spring (33);
the outer pipe body (5) is provided with a perforation (31) matched with the fixed block (32);
a heat insulation cavity (4) is arranged between the outer pipe body (5) and the inner pipe body (2), and heat insulation materials are filled in the heat insulation cavity (4).
2. The double-layer thermally insulating high adhesion petroleum casing according to claim 1, wherein said fixed block assembly is 3 sets.
3. The double-layer thermally insulating high adhesion petroleum casing according to claim 2, wherein each fixed block assembly comprises 4 or 6 mounting slots.
4. The double-layer heat-insulating high-adhesiveness petroleum casing pipe according to claim 1, comprising a rotary limiting mechanism, wherein the rotary limiting mechanism comprises a plurality of groups of limiting units, each group of limiting units comprises a limiting column (9) arranged on the left end face of an inner pipe body (2) and an arc-shaped groove (7) matched with the limiting column (9), the limiting column (9) is positioned at one end of the arc-shaped groove (7) and is in sliding connection, a second spring (8) is fixedly connected in the arc-shaped groove (7), one end of the second spring (8) is fixedly connected with the arc-shaped groove (7), and the other end of the second spring is fixedly connected with the side face of the limiting column (9).
5. The double-layer heat-insulating high-adhesion petroleum casing according to claim 1, characterized in that the ends of the fixed blocks (32) are tapered.
6. The double-layer heat-insulating high-adhesiveness petroleum casing pipe according to claim 1, wherein the left end of the petroleum casing pipe is provided with an external thread connecting mechanism, and the right end is provided with an internal thread connecting mechanism;
the external thread connecting mechanism comprises a sealing groove (11), an external thread (12), an external sealing conical surface (13) and an external torque shoulder (14) which are sequentially arranged from inside to outside;
the internal thread connecting mechanism comprises a sealing surface (61), an internal thread (62), an internal sealing conical surface (63) and an internal torque shoulder (64) which are sequentially arranged from outside to inside;
the outer torque shoulder (14) is matched with the inner torque shoulder (64) for use and is connected in an interference fit manner;
the outer sealing conical surface (13) is matched with the inner sealing conical surface (63) for use and is connected in an interference fit manner; the external thread (12) is in threaded connection with the internal thread (62); a sealing ring is arranged in the sealing groove (11), and the sealing surface (61) is in sealing connection with the sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321059001.4U CN219910665U (en) | 2023-05-06 | 2023-05-06 | Double-layer heat-insulating high-adhesiveness petroleum casing pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321059001.4U CN219910665U (en) | 2023-05-06 | 2023-05-06 | Double-layer heat-insulating high-adhesiveness petroleum casing pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219910665U true CN219910665U (en) | 2023-10-27 |
Family
ID=88437639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321059001.4U Active CN219910665U (en) | 2023-05-06 | 2023-05-06 | Double-layer heat-insulating high-adhesiveness petroleum casing pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219910665U (en) |
-
2023
- 2023-05-06 CN CN202321059001.4U patent/CN219910665U/en active Active
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