CN220151278U - Direct-connection double-layer heat-insulating oil sleeve - Google Patents
Direct-connection double-layer heat-insulating oil sleeve Download PDFInfo
- Publication number
- CN220151278U CN220151278U CN202320851971.1U CN202320851971U CN220151278U CN 220151278 U CN220151278 U CN 220151278U CN 202320851971 U CN202320851971 U CN 202320851971U CN 220151278 U CN220151278 U CN 220151278U
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- China
- Prior art keywords
- pipe body
- end cover
- layer pipe
- inclined plane
- shoulder
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- 238000009413 insulation Methods 0.000 claims abstract description 20
- 230000002146 bilateral effect Effects 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 34
- 230000003014 reinforcing effect Effects 0.000 claims description 12
- 239000011261 inert gas Substances 0.000 claims description 4
- 238000005192 partition Methods 0.000 claims description 3
- 125000006850 spacer group Chemical group 0.000 claims 1
- 238000003754 machining Methods 0.000 abstract 1
- 239000003208 petroleum Substances 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
Abstract
The utility model discloses a direct-connection double-layer heat-insulating oil sleeve, which comprises an outer layer pipe body, an inner layer pipe body, a left end cover and a right end cover; the outer layer pipe body is arranged at the outer side of the inner layer pipe body, a heat insulation cavity is arranged between the outer layer pipe body and the inner layer pipe body, and external threads are arranged at the end parts of the two ends of the outer layer pipe body; the left end cover and the right end cover are arranged in bilateral symmetry, each of the left end cover and the right end cover comprises an annular end plate and a connecting ring bent to one side by 90 degrees along the edge of the end plate, an annular spacing plate is arranged on the inner side of the end plate, and internal threads are arranged on the inner side of the connecting ring; the left end cover and the right end cover are respectively connected with external threads at two ends of the outer layer pipe body through internal threads, and the spacing plates of the left end cover and the right end cover are respectively inserted from two ends of the heat insulation cavity. The pipe body double-layer structure is fixed through the left end cover and the right end cover, and is simple to operate and high in machining efficiency.
Description
Technical Field
The utility model relates to the technical field of oil and gas drilling and production pipe structures, in particular to a direct-connection double-layer heat-insulating oil sleeve.
Background
In the development process of the petroleum industry, along with the development of oil well gas drilling operation to deep wells, ultra-deep wells, high-pressure gas wells, directional wells and acid environment wells, the development process gradually stretches into the development process, and higher requirements are put on the usability of petroleum pipes. The heat insulation performance is one of important performances of petroleum oil pipe products. In the traditional technology, processing the vacuum heat insulation cavity in the wall of the petroleum casing is an important means for improving the heat insulation performance of the petroleum casing, but the manufacturing process is complex and the cost is high.
Disclosure of Invention
Aiming at the technical problems in the prior art, the utility model aims to provide a direct-connection double-layer heat insulation oil sleeve.
In order to achieve the above purpose, the technical scheme provided by the utility model is as follows:
a direct-connection double-layer heat-insulating oil sleeve comprises an outer layer pipe body, an inner layer pipe body, a left end cover and a right end cover;
the outer layer pipe body is arranged at the outer side of the inner layer pipe body, a heat insulation cavity is arranged between the outer layer pipe body and the inner layer pipe body, and external threads are arranged at the end parts of the two ends of the outer layer pipe body;
the left end cover and the right end cover are arranged in bilateral symmetry, each of the left end cover and the right end cover comprises an annular end plate and a connecting ring bent to one side by 90 degrees along the edge of the end plate, an annular spacing plate is arranged on the inner side of the end plate, and internal threads are arranged on the inner side of the connecting ring; the left end cover and the right end cover are respectively connected with external threads at two ends of the outer layer pipe body through internal threads, and the spacing plates of the left end cover and the right end cover are respectively inserted from two ends of the heat insulation cavity;
inert gas is injected into the heat insulation cavity.
The outer circumference of the outer layer pipe body is provided with a plurality of reinforcing rings at intervals along the axial direction, and the outer circumference of each reinforcing ring is provided with a plurality of reinforcing blocks at intervals along the circumference.
The inner layer pipe body is characterized in that one end of the inner layer pipe body is an external thread end, the other end of the inner layer pipe body is an internal thread end which is matched with the external thread end, a first thread section, a first inclined plane shoulder, a second thread section, a second inclined plane shoulder, a third thread section, a first inclined sealing surface and a first sealing plane are sequentially arranged on the external thread end from inside to outside, a sixth thread section, a fourth inclined plane shoulder, a fifth thread section, a third inclined plane shoulder, a fourth thread section, a second inclined sealing surface and a second sealing plane are sequentially arranged on the internal thread end from outside to inside, during connection, the first thread section is in threaded connection with the sixth thread section, the first inclined plane shoulder is in threaded connection with the fourth inclined plane shoulder, the second thread section is in threaded connection with the fifth thread section, the second inclined plane shoulder is in threaded connection with the third inclined plane shoulder, the third thread section is in threaded connection with the fourth thread section, the first inclined plane is in sealed connection with the second inclined plane.
The inner side of the end part of the external thread end is provided with a first annular groove, an annular insert is arranged between the first sealing plane and the first annular groove, the inner side of the internal thread end is provided with an end surface shoulder, the end surface shoulder is provided with a slot, a sealing ring is arranged in the slot, and the annular insert is inserted into the slot.
The longitudinal section of the partition plate comprises a cylindrical section and a conical column section.
Compared with the prior art, the utility model has the beneficial effects that:
1. the pipe body double-layer structure is fixed through the left end cover and the right end cover, so that the operation is simple, and the processing efficiency is high;
2. the reinforcing ring is arranged on the outer side of the outer layer pipe body, so that the adhesiveness between the reinforcing ring and the outside well cementation cement is better, and the service life and the installation firmness are improved;
3. the multi-connection threaded structure and the design of the structures such as the sealing conical surface, the inclined plane shoulder, the sealing ring and the like can effectively improve the connection strength, the sealing performance and the like of the threaded joint, and can ensure the air sealing effect under complex well conditions such as deep wells, ultra-deep wells, high-pressure wells and the like.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present utility model;
FIG. 2 is a schematic view of a fastening ring according to an embodiment of the present utility model;
FIG. 3 is a schematic view of a longitudinal section of an intermediate baffle according to an embodiment of the present utility model;
in the figure, a left end cover 1, an outer layer pipe body 2, a reinforcing ring 3, a heat insulation cavity 4, an inner layer pipe body 5, a right end cover 6, a first thread section 7, a first inclined plane shoulder 8, a second thread section 9, a second inclined plane shoulder 10, a third thread section 11, a first inclined sealing surface 12, a first sealing plane 13, a first annular groove 14, a second sealing plane 15, a second inclined sealing surface 16, a fourth thread section 17, a third inclined plane shoulder 18, a sixth thread section 19, a fourth inclined plane shoulder 20, a fifth thread section 21 and a sealing ring 22.
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.
Referring to fig. 1-3, an embodiment structure of the present utility model is shown.
The embodiment provides a direct-connection double-layer heat-insulating oil sleeve, which comprises an outer layer pipe body 2, an inner layer pipe body 5, a left end cover 1 and a right end cover 6;
the outer layer pipe body 2 is arranged at the outer side of the inner layer pipe body 5, a heat insulation cavity 4 is arranged between the outer layer pipe body and the inner layer pipe body, and external threads are arranged at the end parts of the two ends of the outer layer pipe body 2;
the left end cover 1 and the right end cover 6 are arranged in bilateral symmetry, the left end cover 1 and the right end cover 6 both comprise annular end plates and connecting rings which are bent to one side by 90 degrees along the edges of the end plates, annular spacing plates are arranged on the inner sides of the end plates, and internal threads are arranged on the inner sides of the connecting rings; the left end cover 1 and the right end cover 6 are respectively connected with external threads at two ends of the outer layer pipe body 2 through internal threads, and the spacing plates of the left end cover 1 and the right end cover 6 are respectively inserted from two ends of a heat insulation cavity, and inert gas is injected into the heat insulation cavity. The pipe body double-layer structure is fixed through the left end cover and the right end cover, so that the operation is simple, and the processing efficiency is high; in addition, inert gas is injected into the heat insulation cavity, so that the service life of the pipe body is prolonged.
Preferably, a plurality of reinforcing rings 3 are arranged on the outer circumference of the outer tube body 2 at intervals along the axial direction, and a plurality of reinforcing blocks are arranged on the outer circumference of each reinforcing ring at intervals along the circumference. In addition, the outside of the outer layer pipe body 2 is also provided with a silica sand layer, so that the adhesive force between the outer layer pipe body and the well cementation cement is further improved, and the pipe body is prevented from moving after being installed.
Preferably, one end of the inner pipe body 5 is an external thread end, the other end is an internal thread end matched with the external thread end, the external thread end is sequentially provided with a first thread section 7, a first inclined plane shoulder 8, a second thread section 9, a second inclined plane shoulder 10, a third thread section 11, a first inclined plane shoulder 12 and a first sealing plane 13 from inside to outside, the internal thread end is sequentially provided with a sixth thread section 19, a fourth inclined plane shoulder 20, a fifth thread section 21, a third inclined plane shoulder 18, a fourth thread section 17, a second inclined plane shoulder 16 and a second sealing plane 15 from outside to inside, when the internal pipe body is connected, the first thread section 7 is in threaded connection with the sixth thread section 19, the first inclined plane shoulder 8 is in sealed connection with the fourth inclined plane shoulder 20, the second thread section 9 is in threaded connection with the fifth thread section 21, the second inclined plane shoulder 10 is in sealed connection with the third inclined plane shoulder 18, the third thread section 11 is in threaded connection with the fourth thread section 17, and the first inclined plane shoulder 12 is in sealed connection with the second inclined plane shoulder 16, and the first sealing plane shoulder 13 is in sealed connection with the second sealing plane 15. The inner side of the end part of the external thread end is provided with a first annular groove 14, an annular insert is arranged between the first sealing plane 13 and the first annular groove 14, the inner side of the internal thread end is provided with an end surface shoulder, the end surface shoulder is provided with a slot, the slot is internally provided with a sealing ring 22, and the annular insert is inserted into the slot.
The multi-connection threaded structure and the design of the structures such as the sealing conical surface, the inclined plane shoulder, the sealing ring and the like can effectively improve the connection strength, the sealing performance and the like of the threaded joint, and can ensure the air sealing effect under complex well conditions such as deep wells, ultra-deep wells, high-pressure wells and the like.
Preferably, the longitudinal section of the partition plate comprises a cylindrical section and a conical section, and the installation is facilitated by the structure.
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 (5)
1. The direct-connection double-layer heat-insulating oil sleeve is characterized by comprising an outer layer pipe body (2), an inner layer pipe body (5), a left end cover (1) and a right end cover (6);
the outer layer pipe body (2) is arranged outside the inner layer pipe body (5), a heat insulation cavity (4) is arranged between the outer layer pipe body and the inner layer pipe body, and external threads are arranged at the end parts of the two ends of the outer layer pipe body (2);
the left end cover (1) and the right end cover (6) are arranged in bilateral symmetry, the left end cover (1) and the right end cover (6) comprise circular end plates and connecting rings which are bent to one side by 90 degrees along the edges of the end plates, annular partition plates are arranged on the inner sides of the end plates, and internal threads are arranged on the inner sides of the connecting rings; the left end cover (1) and the right end cover (6) are respectively connected with external threads at two ends of the outer layer pipe body (2) through internal threads, and the spacing plates of the left end cover (1) and the right end cover (6) are respectively inserted from two ends of the heat insulation cavity;
inert gas is injected into the heat insulation cavity.
2. The direct-connection double-layer heat insulation oil sleeve according to claim 1, wherein a plurality of reinforcing rings (3) are arranged on the outer circumference surface of the outer tube body (2) at intervals along the axial direction, and a plurality of reinforcing blocks are arranged on the outer circumference of each reinforcing ring at intervals along the circumference.
3. The direct-connection double-layer heat insulation oil sleeve according to claim 1, wherein one end of the inner layer pipe body (5) is an external thread end, the other end is an internal thread end which is matched with the external thread end, the external thread end is sequentially provided with a first thread section (7), a first inclined plane shoulder (8) and a second thread section (9), a second inclined plane shoulder (10), a third thread section (11), a first inclined sealing surface (12) and a first sealing plane (13) from inside to outside, the internal thread end is sequentially provided with a sixth thread section (19), a fourth inclined plane shoulder (20), a fifth thread section (21) and a third inclined plane shoulder (18), a fourth thread section (17), a second inclined sealing surface (16) and a second sealing plane (15) from inside to outside, when the external thread end is connected, the first thread section (7) is in threaded connection with the sixth thread section (19), the first inclined plane shoulder (8) is in sealed connection with the fourth inclined plane shoulder (20), the second thread section (9) is in threaded connection with the fifth thread section (21), the third inclined plane shoulder (10) is in threaded connection with the third inclined plane shoulder (16) and the third inclined plane shoulder (11) is in threaded connection with the fourth inclined plane (8) and the third inclined plane shoulder (11) is in sealed connection, the first sealing plane (13) is in sealing connection with the second sealing plane (15).
4. A direct connection type double-layer heat insulation oil sleeve according to claim 3, characterized in that a first annular groove (14) is arranged on the inner side of the end part of the external thread end, an annular insert is arranged between the first sealing plane (13) and the first annular groove (14), an end face shoulder is arranged on the inner side of the internal thread end, a slot is arranged on the end face shoulder, a sealing ring (22) is arranged in the slot, and the annular insert is inserted into the slot.
5. The direct-connect double-layer heat insulating oil jacket according to claim 1, wherein the longitudinal section of the spacer comprises a cylindrical section and a tapered section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320851971.1U CN220151278U (en) | 2023-04-17 | 2023-04-17 | Direct-connection double-layer heat-insulating oil sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320851971.1U CN220151278U (en) | 2023-04-17 | 2023-04-17 | Direct-connection double-layer heat-insulating oil sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220151278U true CN220151278U (en) | 2023-12-08 |
Family
ID=89013278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320851971.1U Active CN220151278U (en) | 2023-04-17 | 2023-04-17 | Direct-connection double-layer heat-insulating oil sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220151278U (en) |
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2023
- 2023-04-17 CN CN202320851971.1U patent/CN220151278U/en active Active
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| GR01 | Patent grant |