CN217874837U9 - Wax-proof thermal insulation pipe for oil field well - Google Patents
Wax-proof thermal insulation pipe for oil field well Download PDFInfo
- Publication number
- CN217874837U9 CN217874837U9 CN202222123329.XU CN202222123329U CN217874837U9 CN 217874837 U9 CN217874837 U9 CN 217874837U9 CN 202222123329 U CN202222123329 U CN 202222123329U CN 217874837 U9 CN217874837 U9 CN 217874837U9
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- China
- Prior art keywords
- pipe
- pipe body
- annular space
- thermal insulation
- tube
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- 238000009413 insulation Methods 0.000 title claims description 20
- 238000003466 welding Methods 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 18
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 239000011810 insulating material Substances 0.000 claims abstract 2
- 239000012774 insulation material Substances 0.000 claims description 15
- 230000008878 coupling Effects 0.000 description 7
- 238000010168 coupling process Methods 0.000 description 7
- 238000005859 coupling reaction Methods 0.000 description 7
- 239000003921 oil Substances 0.000 description 7
- 238000004321 preservation Methods 0.000 description 6
- 239000010779 crude oil Substances 0.000 description 4
- 239000012188 paraffin wax Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 239000001993 wax Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
Landscapes
- Thermal Insulation (AREA)
Abstract
The utility model relates to a wax-proof heat-insulating pipe for an oilfield well, which comprises an inner pipe and an outer pipe sleeved outside the inner pipe, wherein the outer pipe comprises a first pipe body, the inner pipe comprises a second pipe body, the outer diameter of the second pipe body is smaller than the inner diameter of the first pipe body, a first annular space is formed between the second pipe body and the first pipe body, a heat-insulating material is arranged in the first annular space, a first backing ring is respectively arranged at the near end and the far end of the first annular space and used for positioning the first pipe body and sealing the first annular space, and the first pipe body and the first backing ring are welded on the surface of the second pipe body by adopting welding materials.
Description
Technical Field
The utility model relates to the technical field of heat preservation pipes, in particular to a wax-proof heat preservation pipe for an oilfield well.
Background
The insulating pipe is a short name of an insulating pipeline and is used for conveying liquid, gas and other mediums. Because the produced crude oil contains wax, in the process of conveying the crude oil from the bottom of the well to the ground, along with the decrease of the temperature from the bottom of the well to the temperature of the well head, the wax contained in the crude oil is precipitated and condensed on the inner wall of the pipeline, so that the pipeline conveying speed is reduced, even the pipeline is blocked, and a new oil pipe is required to be replaced or lifted for cleaning the oil pipe later, thereby affecting the oil extraction efficiency and increasing the cost.
Disclosure of Invention
In view of the foregoing shortcomings of the prior art, it is an object of the present utility model to provide a paraffin control and thermal insulation pipe for oilfield wells that addresses one or more of the problems of the prior art.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
the utility model provides an oil field is wax control heat preservation pipe for well, is in including inner tube and cover the outside outer tube of inner tube, the outer tube includes first body, the inner tube includes the second body, the external diameter of second body is less than the internal diameter of first body, form first annular space between second body and the first body, heat preservation material has in the first annular space, the near-end and the distal end of first annular space set up first backing ring respectively and are used for the location first body and seal first annular space.
Further, the proximal end and the distal end of the first tube body and the first backing ring are respectively welded and connected to the surface of the second tube body by using a first welding material.
Further, the heat insulation material is wound on the surface of the second pipe body.
Further, the proximal and distal ends of the second tubular body are externally connected to a collar.
Further, the proximal and distal surfaces of the second tube have a first convexity, and the collar comprises a third tube having a second convexity on its inner wall that mates with the first convexity.
Further, the first convex surface is in threaded connection with the second convex surface.
Further, the outer sleeve is sleeved outside the third pipe body, the outer sleeve comprises a fourth pipe body, the inner diameter of the fourth pipe body is larger than the outer diameter of the third pipe body, a second annular space is formed between the fourth pipe body and the third pipe body, heat insulation materials are arranged in the second annular space, and a second backing ring is arranged at the proximal end and the distal end of the second annular space respectively and used for positioning the fourth pipe body and sealing the second annular space.
Further, the heat insulation material is wound on the surface of the third pipe body.
Further, the proximal end and the distal end of the fourth pipe body and the second backing ring are respectively welded and connected to the surface of the third pipe body by using second welding materials.
Further, the first welding material and the second welding material adopt J422 welding rods.
Compared with the prior art, the utility model has the following beneficial technical effects:
according to the paraffin control heat preservation pipe for the oilfield well, the first annular space is formed between the second pipe body and the first pipe body, the first backing rings are respectively arranged at the near end and the far end of the first annular space and used for positioning the first pipe body and sealing the first annular space, the first pipe body and the first backing rings are welded on the surface of the second pipe body by adopting welding materials, and the cooling of crude oil in the process from the bottom of the well to the ground is reduced on the premise of not changing the original well condition and well structure, so that paraffin in the second pipe body is reduced, the structure is simple, the installation is convenient, and the oil extraction efficiency is improved.
And (II) further, an outer sleeve is sleeved outside the coupling, a second annular space is formed between the fourth pipe body and the third pipe body, a heat insulation material is filled in the second annular space, a second backing ring is arranged at the near end and the far end of the second annular space respectively and used for positioning the fourth pipe body and sealing the second annular space, and the welding material is used for welding the fourth pipe body and the second backing ring on the surface of the third pipe body, so that the heat insulation effect of the joint of the heat insulation pipes is ensured, and the oil extraction efficiency is improved.
Drawings
Fig. 1 shows a schematic structural diagram of a wax-proof thermal insulation pipe for an oilfield well according to an embodiment of the utility model.
The reference numerals in the drawings:
1. an outer tube; 10. a first tube body; 2. an inner tube; 20. a second tube body; 21. a first convex surface; 22. a first annular space; 23. a first backing ring; 3. coupling; 30. a third tube body; 31. a second convex surface; 4. an outer sleeve; 40. a fourth pipe body; 41. a second annular space; 42. a second backing ring; 5. a thermal insulation material; 6. a first solder; 7. and (3) a second welding material.
Detailed Description
For a better understanding of the utility model with objects, features and advantages, refer to the drawings. It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the utility model to the extent that any modifications, changes in the proportions, or adjustments of the sizes of structures, proportions, or otherwise, used in the practice of the utility model, are included in the spirit and scope of the utility model which is otherwise, without departing from the spirit or essential characteristics thereof.
In the description of the present utility model, the positional or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of 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 constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
To more clearly describe the structure of the paraffin control and thermal insulation pipe for oilfield wells, the present utility model defines terms of "distal end" and "proximal end", taking fig. 1 as an example, where the left side of the first pipe body 10 in fig. 1 is the proximal end and the right side of the first pipe body 10 in fig. 1 is the distal end.
Example 1
Referring to fig. 1, the wax-proof thermal insulation pipe for an oilfield well comprises an inner pipe 2 and an outer pipe 1 sleeved outside the inner pipe 2, wherein the outer pipe 1 comprises a first pipe body 10, the inner pipe 2 comprises a second pipe body 20, the outer diameter of the second pipe body 20 is smaller than the inner diameter of the first pipe body 10, a first annular space 22 is formed between the second pipe body 20 and the first pipe body 10, a thermal insulation material 5 is arranged in the first annular space 22, and a first backing ring 23 is arranged at the proximal end and the distal end of the first annular space 22 and used for positioning the first pipe body 10 and sealing the first annular space 22.
Referring to fig. 1, further, the proximal ends and distal ends of the first tube body 10 and the first backing ring 23 are respectively welded to the surface of the second tube body 20 by the first welding material 6.
Referring to fig. 1, further, the heat insulation material 5 is wound around the surface of the second pipe body 20. Preferably, in the wax-proof thermal insulation pipe for oilfield wells according to the first embodiment, the thermal insulation material 5 is thermal insulation cotton.
Referring to fig. 1, further, the proximal end and the distal end of the second pipe body 20 are externally connected to the coupling 3, and adjacent second pipe bodies 20 are connected by the coupling 3.
Referring to fig. 1, further, the proximal and distal surfaces of the second tube 20 have a first convex surface 21, the coupling 3 includes a third tube 30, and the inner wall of the third tube 30 has a second convex surface 31 matching the first convex surface 21. The first convex surface 21 enables the joint of the second pipe body 20 and the coupling 3 to have a certain thickness, so that the heat preservation effect is improved.
Referring to fig. 1, further, the first convex surface 21 is screwed with the second convex surface 31, and after the screwing, the second convex surface 31 contacts with the first convex surface 21 and presses the first convex surface 21 to generate stress, so as to increase the friction between the second pipe body 20 and the coupling 3.
Referring to fig. 1, further, the third tube 30 is sleeved with an outer sleeve 4, the outer sleeve 4 includes a fourth tube 40, the inner diameter of the fourth tube 40 is greater than the outer diameter of the third tube 30, a second annular space 41 is formed between the fourth tube 40 and the third tube 30, the second annular space 41 is provided with a thermal insulation material 5, and a second backing ring 42 is disposed at the proximal end and the distal end of the second annular space 41 respectively for positioning the fourth tube 40 and sealing the second annular space 41.
Referring to fig. 1, further, the heat insulation material 5 is wound around the surface of the third pipe body 30.
Referring to fig. 1, further, the proximal ends and distal ends of the fourth tube 40 and the second backing ring 42 are respectively welded to the surface of the third tube 30 by the second solder 7.
Preferably, in the wax-proof thermal insulation pipe for oilfield well of the first embodiment, the first welding material 6 and the second welding material 7 are J422 welding rod or J507 welding rod.
The specific installation flow of the utility model is as follows:
the heat insulation material 5 is wound outside the second pipe body 20, the first pipe body 10 is sleeved, the first backing ring 23 is clamped between the first pipe body 10 and the second pipe body 20, and the near ends and the far ends of the first pipe body 10 and the first backing ring 23 are respectively welded on the surface of the second pipe body 20 through the first welding material 6.
The third pipe body 30 is screwed on the near end and the far end of the second pipe body 20, the heat insulation material 5 is wound outside the third pipe body 30, the fourth pipe body 40 is sleeved, the second backing ring 42 is clamped between the fourth pipe body 40 and the third pipe body 30, and the near end and the far end of the fourth pipe body 40 and the near end and the far end of the second backing ring 42 are respectively welded on the surface of the third pipe body 30 through the second welding material 7.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (10)
1. Wax control insulating tube for oil field well, its characterized in that: including inner tube and cover establish the outside outer tube of inner tube, the outer tube includes first body, the inner tube includes the second body, the external diameter of second body is less than the internal diameter of first body, form first annular space between second body and the first body, insulating material has in the first annular space, the near-end and the distal end of first annular space set up first backing ring respectively and are used for the location first body and seal first annular space.
2. The oilfield well wax control thermal insulation pipe of claim 1, wherein: the proximal end and the distal end of the first pipe body and the first backing ring are respectively welded and connected to the surface of the second pipe body by using a first welding material.
3. The oilfield well wax control thermal insulation pipe of claim 1, wherein: the heat insulation material is wound on the surface of the second pipe body.
4. The oilfield well wax control thermal insulation pipe of claim 2, wherein: the proximal and distal ends of the second tube are externally connected to a collar.
5. The oilfield well wax control thermal insulation pipe of claim 4, wherein: the proximal and distal surfaces of the second tube have a first convexity, and the collar comprises a third tube having a second convexity on its inner wall that mates with the first convexity.
6. The oilfield well wax control thermal insulation pipe of claim 5, wherein: the first convex surface is in threaded connection with the second convex surface.
7. The oilfield well wax control thermal insulation pipe of claim 5, wherein: the outer sleeve is sleeved outside the third pipe body, the outer sleeve comprises a fourth pipe body, the inner diameter of the fourth pipe body is larger than the outer diameter of the third pipe body, a second annular space is formed between the fourth pipe body and the third pipe body, heat insulation materials are arranged in the second annular space, and a second backing ring is arranged at the proximal end and the distal end of the second annular space respectively and used for positioning the fourth pipe body and sealing the second annular space.
8. The oilfield well wax control thermal insulation pipe of claim 7, wherein: the heat insulation material is wound on the surface of the third pipe body.
9. The oilfield well wax control thermal insulation pipe of claim 7, wherein: and the proximal end and the distal end of the fourth pipe body and the second backing ring are respectively welded and connected to the surface of the third pipe body by using a second welding material.
10. The oilfield well wax control thermal insulation pipe of claim 9, wherein: the first welding material and the second welding material adopt J422 welding rod or J507 welding rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222123329.XU CN217874837U9 (en) | 2022-08-12 | 2022-08-12 | Wax-proof thermal insulation pipe for oil field well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222123329.XU CN217874837U9 (en) | 2022-08-12 | 2022-08-12 | Wax-proof thermal insulation pipe for oil field well |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN217874837U CN217874837U (en) | 2022-11-22 |
| CN217874837U9 true CN217874837U9 (en) | 2023-12-22 |
Family
ID=84078020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222123329.XU Active CN217874837U9 (en) | 2022-08-12 | 2022-08-12 | Wax-proof thermal insulation pipe for oil field well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217874837U9 (en) |
-
2022
- 2022-08-12 CN CN202222123329.XU patent/CN217874837U9/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN217874837U (en) | 2022-11-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CU01 | Correction of utility model |
Correction item: Denomination of Utility Model|Abstract|Claims|Description Correct: Anti wax insulation pipes for oilfield wells|correct False: Anti wax insulation pipes for oilfield wells|error Number: 47-01 Page: ?? Volume: 38 Correction item: Denomination of Utility Model|Abstract Correct: Anti wax insulation pipes for oilfield wells|correct False: Anti wax insulation pipes for oilfield wells|error Number: 47-01 Volume: 38 |
|
| CU01 | Correction of utility model | ||
| OR01 | Other related matters | ||
| OR01 | Other related matters |