CN116411851A - Repairing method of oil pipe - Google Patents
Repairing method of oil pipe Download PDFInfo
- Publication number
- CN116411851A CN116411851A CN202111670388.2A CN202111670388A CN116411851A CN 116411851 A CN116411851 A CN 116411851A CN 202111670388 A CN202111670388 A CN 202111670388A CN 116411851 A CN116411851 A CN 116411851A
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- pipe
- pipe section
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- connecting pipe
- tooth
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 13
- 230000002093 peripheral effect Effects 0.000 claims description 17
- 239000003292 glue Substances 0.000 claims description 11
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 11
- 230000008602 contraction Effects 0.000 claims description 8
- 230000007704 transition Effects 0.000 claims description 5
- 229910001000 nickel titanium Inorganic materials 0.000 claims description 4
- 238000004321 preservation Methods 0.000 claims description 4
- HZEWFHLRYVTOIW-UHFFFAOYSA-N [Ti].[Ni] Chemical compound [Ti].[Ni] HZEWFHLRYVTOIW-UHFFFAOYSA-N 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims 2
- 238000007789 sealing Methods 0.000 abstract description 11
- 238000003466 welding Methods 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract description 3
- 239000003129 oil well Substances 0.000 abstract 1
- 210000001503 joint Anatomy 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910001339 C alloy Inorganic materials 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- HLXZNVUGXRDIFK-UHFFFAOYSA-N nickel titanium Chemical compound [Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni] HLXZNVUGXRDIFK-UHFFFAOYSA-N 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000005493 welding type Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B29/00—Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B29/00—Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
- E21B29/02—Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground by explosives or by thermal or chemical means
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B29/00—Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
- E21B29/10—Reconditioning of well casings, e.g. straightening
-
- 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
- Y02E10/20—Hydro energy
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- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention relates to the field of oil well exploitation, and discloses a repairing method of an oil pipe, wherein the oil pipe comprises a first pipe section (1) and a second pipe section (2), and the repairing method comprises the following steps: s1, arranging a first connecting pipe (3) and a second connecting pipe (4) at the joint of a first pipe section (1) and a second pipe section (2), wherein the first connecting pipe (3) and the second connecting pipe (4) are made of shape memory alloy and are in a deformed state; s2, heating the first connecting pipe (3) and the second connecting pipe (4) to restore the shape. Through the technical scheme, the connecting pipe made of the shape memory alloy can realize sealing connection between two pipe sections, has a simple structure, does not need large-scale welding equipment, is convenient for construction, has high reliability, and can effectively realize reutilization of the oil pipe.
Description
Technical Field
The invention relates to the field of oil production wells, in particular to a repairing method of an oil pipe.
Background
In the drilling operation process in oil and gas exploration and development, the coiled tubing is widely applied to drilling and completion operations such as fracturing, sand washing and the like. The coiled tubing is a tubing made of low-carbon alloy steel, has good flexibility, is also called a flexible tubing, and has a length of several kilometers. The continuous oil pipe operation equipment has the characteristics of pressurized operation and continuous lifting, and is small in size, quick in operation period and low in cost.
Because the coiled tubing is integrally formed by a pipe, when the pipe is damaged locally or broken and fails in the use process, the traditional welding type repairing mode has a plurality of procedures and high requirements, different welding wires are required to be adopted for different pipes, and the quality of welding seams is difficult to ensure.
Disclosure of Invention
The invention aims to provide a repairing method of an oil pipe, which aims to solve the problem that a coiled oil pipe is not easy to repair.
In order to achieve the above object, according to an aspect of the present invention, there is provided a repairing method of an oil pipe, wherein the oil pipe includes a first pipe section and a second pipe section, the repairing method including:
s1, arranging a first connecting pipe sleeved outside the first pipe section and the second pipe section and a second connecting pipe inserted inside the first pipe section and the second pipe section at the joint of the first pipe section and the second pipe section, wherein the first connecting pipe and the second connecting pipe are made of shape memory alloy, the first connecting pipe is in a radial expansion state, and the second connecting pipe is in a radial contraction state;
s2, heating the first connecting pipe and the second connecting pipe to a transition temperature, wherein the first connecting pipe is in a shape recovery state, the inner peripheral surface of the first connecting pipe is in sealing fit with the outer peripheral surface of the first pipe section and the outer peripheral surface of the second pipe section, and the second connecting pipe is in a shape recovery state, and the outer peripheral surface of the second connecting pipe is in sealing fit with the inner peripheral surface of the first pipe section and the inner peripheral surface of the second pipe section.
Alternatively, the inner diameter and the outer diameter of the first pipe section and the second pipe section are respectively the same, the inner diameter of the first connecting pipe in the radial expansion state is 0.3mm-0.5mm larger than the outer diameter of the first pipe section, and the outer diameter of the second connecting pipe in the radial contraction state is 0.3mm-0.5mm smaller than the inner diameter of the first pipe section.
Alternatively, the inner diameter of the first connecting tube in the recovered shape is 0.2mm-0.4mm smaller than the outer diameter of the first tube section, and the outer diameter of the second connecting tube in the recovered shape is 0.2mm-0.4mm larger than the inner diameter of the first tube section.
Optionally, the inner circumferential surface of the first connecting pipe is provided with a tooth part, and the outer circumferential surface of the second connecting pipe is provided with a tooth part.
Alternatively, the teeth on the first connection tube include a first tooth at the first tube section and a second tooth at the second tube section, the tips of the first tooth and the second tooth being inclined toward each other, and the teeth on the second connection tube include a third tooth at the first tube section and a fourth tooth at the second tube section, the tips of the third tooth and the fourth tooth being inclined toward each other.
Alternatively, the tooth top width of the tooth part is 1mm-2mm, the tooth root width is 2mm-3mm, and the depth of the tooth groove is 5% -10% of the wall thickness.
Optionally, the repairing method includes: in S1, metal glue is filled at the joint of the first pipe section and the second pipe section.
Optionally, before filling the metal glue, leveling the end parts of the first pipe section and the second pipe section, and processing a groove at the joint of the first pipe section and the second pipe section.
Optionally, the heating temperature is 50-65 degrees, and the heat preservation time is 35-50 min.
Optionally, the shape memory alloy is a nickel titanium shape memory alloy.
Through the technical scheme, the connecting pipe made of the shape memory alloy can realize sealing connection between two pipe sections, has a simple structure, does not need large-scale welding equipment, is convenient for construction, has high reliability, and can effectively realize reutilization of the oil pipe.
Drawings
FIG. 1 is a schematic diagram of an oil pipe in a repairing process according to an embodiment of the present invention;
FIG. 2 is a partial cross-sectional view of a first connection tube according to an embodiment of the present invention;
fig. 3 is a partial cross-sectional view of a second connection pipe according to an embodiment of the present invention.
Description of the reference numerals
1. First pipe section 2 second pipe section
3. First connecting pipe 4 second connecting pipe
5. Heating device 6 metal glue
31. First tooth 32 second tooth
41. Third tooth 42 fourth tooth
Detailed Description
The following describes specific embodiments of the present invention in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the invention, are not intended to limit the invention.
The invention provides a repairing method of an oil pipe, wherein the oil pipe comprises a first pipe section 1 and a second pipe section 2, and the repairing method comprises the following steps:
s1, arranging a first connecting pipe 3 sleeved outside the first pipe section 1 and the second pipe section 2 and a second connecting pipe 4 inserted into the first pipe section 1 and the second pipe section 2 at the joint of the first pipe section 1 and the second pipe section 2, wherein the first connecting pipe 3 and the second connecting pipe 4 are made of shape memory alloy, the first connecting pipe 3 is in a radial expansion state, and the second connecting pipe 4 is in a radial contraction state;
s2, heating the first connecting pipe 3 and the second connecting pipe 4 to a transition temperature, wherein the first connecting pipe 3 is recovered in shape, the inner circumferential surface of the first connecting pipe 3 is in sealing fit with the outer circumferential surface of the first pipe section 1 and the outer circumferential surface of the second pipe section 2, the second connecting pipe 4 is recovered in shape, and the outer circumferential surface of the second connecting pipe 4 is in sealing fit with the inner circumferential surface of the first pipe section 1 and the inner circumferential surface of the second pipe section 2.
The repairing method aims at the oil pipe broken into two pipe sections, namely, the connection of the first pipe section 1 and the second pipe section 2 is realized, and the tightness of the connection position is ensured.
After the first pipe section 1 and the second pipe section 2 are in butt joint, the first connecting pipe 3 is sleeved at the joint, the second connecting pipe 4 is inserted into the joint, namely, the first connecting pipe 3 is positioned outside the first pipe section 1 and the second pipe section 2, the second connecting pipe 4 is positioned inside the first pipe section 1 and the second pipe section 2, wherein the first connecting pipe 3 and the second connecting pipe 4 are respectively made of shape memory alloy, the first connecting pipe 3 is in a radial expansion state, and the second connecting pipe 4 is in a radial contraction state.
By heating the first connecting pipe 3 and the second connecting pipe 4 to reach the transition temperature (temperature at which the shape memory alloy returns to the original shape), the first connecting pipe 3 and the second connecting pipe 4 return to the shape, which causes the inner diameter of the first connecting pipe 3 to decrease so as to more closely fit the outer circumferential surfaces of the first pipe section 1 and the second pipe section 2, and similarly, the outer diameter of the second connecting pipe 4 increases so as to more closely fit the inner circumferential surfaces of the first pipe section 1 and the second pipe section 2, and the first connecting pipe 3 and the second connecting pipe 4 respectively form seals with the first pipe section 1 and the second pipe section 2, thereby realizing the sealed connection of the first pipe section 1 and the second pipe section 2. In particular, after the shape is restored, the first connection pipe 3 is contracted from outside to inside, and the second connection pipe 4 is expanded from inside to outside, and can be respectively extruded from the outside and the inside of the first pipe section 1 and the second pipe section 2 in both directions, so that the first pipe section 1 and the second pipe section 2 can be closely contacted to realize sealing.
The expansion of the first connection pipe 3 and the contraction of the second connection pipe 4 refer to the expansion and contraction of the wall thickness diameter, particularly the increase of the inner diameter of the first connection pipe 3, the decrease of the outer diameter of the second connection pipe 4, and when the original shape is restored, the inner diameter of the first connection pipe 3 is decreased to be fitted to the first pipe section 1 and the second pipe section 2, and the outer diameter of the second connection pipe 4 is increased to be fitted to the first pipe section 1 and the second pipe section 2.
The connection performance and the sealing performance of the oil pipe at the connection part can be well ensured through the connection of the connecting pipes made of the shape memory alloy. The coiled tubing can be reused by the repairing method, so that the cost is saved.
In this scheme, the connecting pipe that shape memory alloy made can realize sealing connection between two pipe sections, and simple structure does not need large-scale welding equipment, and the construction of being convenient for is high, and the reuse of oil pipe can be realized effectively.
Wherein the inner diameter and the outer diameter of the first pipe section 1 and the second pipe section 2 are respectively the same, the inner diameter of the first connecting pipe 3 in a radial expansion state is 0.3mm-0.5mm larger than the outer diameter of the first pipe section 1, and the outer diameter of the second connecting pipe 4 in a radial contraction state is 0.3mm-0.5mm smaller than the inner diameter of the first pipe section 1. The first pipe section 1 and the second pipe section 2 can be formed by accidentally disconnecting the same continuous oil pipe, or can be different continuous oil pipes with the same specification and the same steel grade, and the inner diameter and the outer diameter of the continuous oil pipe are the same. The inner diameter of the first connection pipe 3 is larger than the outer diameter of the oil pipe, so that the first connection pipe 3 can be easily sleeved at the joint of the oil pipe, and the outer diameter of the second connection pipe 4 is smaller than the inner diameter of the oil pipe, so that the second connection pipe 4 can be easily inserted into the joint of the oil pipe.
Wherein the inner diameter of the first connecting pipe 3 in the recovered shape is 0.2mm-0.4mm smaller than the outer diameter of the first pipe section 1, and the outer diameter of the second connecting pipe 4 in the recovered shape is 0.2mm-0.4mm larger than the inner diameter of the first pipe section 1. After the shape is restored, the inner diameter of the first connecting pipe 3 is reduced, the inner diameter of the first connecting pipe is smaller than the outer diameters of the first pipe section 1 and the second pipe section 2, interference fit is achieved, similarly, after the shape is restored, the outer diameter of the second connecting pipe 4 is increased, the outer diameter of the second connecting pipe is larger than the outer diameters of the first pipe section 1 and the second pipe section 2, interference fit is achieved, butt joint of the first pipe section 1 and the second pipe section 2 is achieved, and tightness of a joint is guaranteed.
Wherein, the inner peripheral surface of the first connecting pipe 3 is provided with teeth, and the outer peripheral surface of the second connecting pipe 4 is provided with teeth. The design of the tooth part firstly reduces the surface contact state between the first connecting pipe 3 and the peripheral surfaces of the first pipe section 1 and the second pipe section 2, forms a plurality of relatively independent contact areas, increases the contact effect and improves the static friction force of the whole contact surface; and secondly, mutually independent tooth tops can form mutually independent sealing contact surfaces, so that the sealing performance of the whole contact surface is improved.
Further, as shown in fig. 2 and 3, the teeth on the first connection pipe 3 include a first tooth 31 at the first pipe section 1 and a second tooth 32 at the second pipe section 2, the tips of the first tooth 31 and the second tooth 32 are inclined toward each other, and the teeth on the second connection pipe 4 include a third tooth 41 at the first pipe section 1 and a fourth tooth 42 at the second pipe section 2, and the tips of the third tooth 41 and the fourth tooth 42 are inclined toward each other. After the first connecting pipe 3 is sleeved on the first pipe section 1 and the second pipe section 2, the tooth part at the first pipe section 1 is a first tooth part 31, the tooth part at the second pipe section 2 is a second tooth part 32, the top end of the tooth part is inclined relative to the bottom, and the inclination direction is that the first tooth part 31 and the second tooth part 32 incline towards each other; similarly, the second connection pipe 4 is provided with a third tooth 41 and a fourth tooth 42, and the tip of the third tooth 41 and the tip of the fourth tooth 42 are inclined toward each other. In addition, the inclination direction of the first tooth portion 31 is opposite to the direction in which the first pipe segment 1 is disengaged from the first connecting pipe 3, and the first tooth portion 31 applies a force obliquely to the first pipe segment 1 to prevent the first pipe segment 1 from being disengaged from the first connecting pipe 3, and the second tooth portion 32, the third tooth portion 41, and the fourth tooth portion 42 are similar, and the description thereof will not be repeated here. It can be seen that the tooth portion adopts the tooth-shaped structure of the inclined angle of the tensile face, so that the stability of the tooth portion in tensile load can be effectively increased, and the tensile bearing capacity is improved.
Further, the tooth top width of the tooth part is 1mm-2mm, the tooth root width is 2mm-3mm, and the depth of the tooth groove is 5% -10% of the wall thickness. Referring to fig. 2, the width of the tip (tooth top) of the first tooth portion 31 is smaller than the width of the bottom (tooth root), and the side of the first tooth portion 31 facing the second tooth portion 32 forms a smaller angle with the cross section perpendicular to the central axis direction of the first connection pipe 3, that is, the angle at which the first tooth portion 31 is inclined toward the second tooth portion 32, and the side of the second tooth portion 32 facing away from the second tooth portion 32 is also an inclined surface, which forms a larger angle with the cross section perpendicular to the central axis direction.
In addition, the repair method includes: in S1, a joint between the first pipe section 1 and the second pipe section 2 is filled with a metal paste. The metal glue can bond the first pipe section 1 and the second pipe section 2, and the metal glue can be AB glue, namely, two different glues are mixed and then the object is bonded. In S1, the second connection pipe 4 (for example, a portion having the third tooth portion 31) may be inserted into one of the first pipe section 1 and the second pipe section 2 first, and the first connection pipe 3 is completely sleeved on the first pipe section 1 or the second pipe section 2, and then the second connection pipe 4 is inserted into the other so that the first pipe section 1 and the second pipe section 2 are butted, and then the joint is filled with the metal paste, and then the first connection pipe 3 is slid so that the first tooth portion 31 is located at the first pipe section 1 and the second tooth portion 32 is located at the second pipe section 2.
Further, before filling the metal glue, end portions of the first pipe section 1 and the second pipe section 2 are flattened, and grooves are processed at joints of the first pipe section 1 and the second pipe section 2. A bevel is formed between the end faces of the first pipe section 1 and the second pipe section 2 to allow filling with a suitable amount of metal glue.
Optionally, the heating temperature is 50-65 degrees, and the heat preservation time is 35-50 min. Referring to fig. 1, the heating device 5 may be coated outside the first connection pipe 3 to heat the first connection pipe 3 and the second connection pipe 4, and the heating temperature may be above the transition temperature and a period of heat preservation is required, so that the first connection pipe 3 and the second connection pipe 4 are restored to the original shape within a sufficiently long heating time.
Wherein the shape memory alloy is nickel-titanium shape memory alloy. The transformation temperature of the nitinol shape memory alloy is about 50 deg., which is relatively low, and the first and second connection pipes 3 and 4 can be more easily heated to this temperature by the heating means, which is more convenient to handle.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, a number of simple variants of the technical solution of the invention are possible, including combinations of individual specific technical features in any suitable way. The various possible combinations of the invention are not described in detail in order to avoid unnecessary repetition. Such simple variations and combinations are likewise to be regarded as being within the scope of the present disclosure.
Claims (10)
1. A method of repairing an oil pipe, the oil pipe comprising a first pipe section (1) and a second pipe section (2), the method comprising:
s1, a first connecting pipe (3) sleeved outside the first pipe section (1) and the second pipe section (2) and a second connecting pipe (4) inserted into the first pipe section (1) and the second pipe section (2) are arranged at the joint of the first pipe section (1) and the second pipe section (2), the first connecting pipe (3) and the second connecting pipe (4) are made of shape memory alloy, the first connecting pipe (3) is in a radial expansion state, and the second connecting pipe (4) is in a radial contraction state;
s2, heating first connecting pipe (3) with second connecting pipe (4) is to transition temperature, first connecting pipe (3) resume the shape just the inner peripheral face of first connecting pipe (3) with the outer peripheral face of first pipeline section (1) with the outer peripheral face of second pipeline section (2) is sealed laminating, second connecting pipe (4) resume the shape just the outer peripheral face of second connecting pipe (4) with the inner peripheral face of first pipeline section (1) with the inner peripheral face of second pipeline section (2) is sealed laminating.
2. A method of repairing an oil pipe according to claim 1, wherein the inner diameter and the outer diameter of the first pipe section (1) and the second pipe section (2) are respectively the same, the inner diameter of the first connecting pipe (3) in a radially expanded state is 0.3mm to 0.5mm larger than the outer diameter of the first pipe section (1), and the outer diameter of the second connecting pipe (4) in a radially contracted state is 0.3mm to 0.5mm smaller than the inner diameter of the first pipe section (1).
3. A method of repairing an oil pipe according to claim 1, characterized in that the inner diameter of the first connecting pipe (3) of the restored shape is 0.2mm-0.4mm smaller than the outer diameter of the first pipe section (1), and the outer diameter of the second connecting pipe (4) of the restored shape is 0.2mm-0.4mm larger than the inner diameter of the first pipe section (1).
4. The oil pipe repairing method according to claim 1, wherein the first connecting pipe (3) is provided with teeth on an inner peripheral surface thereof, and the second connecting pipe (4) is provided with teeth on an outer peripheral surface thereof.
5. A method of repairing an oil pipe according to claim 4, characterized in that the teeth on the first connection pipe (3) comprise a first tooth (31) at the first pipe section (1) and a second tooth (32) at the second pipe section (2), the tips of the first tooth (31) and the second tooth (32) being inclined towards each other, the teeth on the second connection pipe (4) comprise a third tooth (41) at the first pipe section (1) and a fourth tooth (42) at the second pipe section (2), the tips of the third tooth (41) and the fourth tooth (42) being inclined towards each other.
6. The method for repairing an oil pipe according to claim 5, wherein the tooth tip width of the tooth portion is 1mm-2mm, the tooth root width is 2mm-3mm, and the tooth groove depth is 5% -10% of the wall thickness.
7. A method of repairing an oil pipe according to claim 1, wherein the method of repairing comprises: in S1, metal glue is filled at the joint of the first pipe section (1) and the second pipe section (2).
8. The method for repairing an oil pipe according to claim 7, wherein before filling with the metal glue, end-flattening is performed on the first pipe section (1) and the second pipe section (2), and a groove is machined at the joint of the first pipe section (1) and the second pipe section (2).
9. The method for repairing an oil pipe according to claim 1, wherein the heating temperature is 50-65 degrees, and the heat preservation time is 35-50 min.
10. The method of repairing an oil pipe of claim 1, wherein the shape memory alloy is a nickel titanium shape memory alloy.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111670388.2A CN116411851A (en) | 2021-12-31 | 2021-12-31 | Repairing method of oil pipe |
| PCT/CN2022/135955 WO2023124754A1 (en) | 2021-12-31 | 2022-12-01 | Non-welding repair method for coiled tubing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111670388.2A CN116411851A (en) | 2021-12-31 | 2021-12-31 | Repairing method of oil pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116411851A true CN116411851A (en) | 2023-07-11 |
Family
ID=86997591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111670388.2A Pending CN116411851A (en) | 2021-12-31 | 2021-12-31 | Repairing method of oil pipe |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN116411851A (en) |
| WO (1) | WO2023124754A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117552738B (en) * | 2024-01-09 | 2024-03-12 | 易盘达石油科技有限公司 | Oil well casing repairing tubular column and construction method |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4677481B2 (en) * | 2008-09-29 | 2011-04-27 | 関東天然瓦斯開発株式会社 | How to repair a circular tube from the inside |
| CN201428405Y (en) * | 2009-03-31 | 2010-03-24 | 安丘市石油钻采机械厂 | Patch device for casing damaged well |
| CN110578488A (en) * | 2019-10-21 | 2019-12-17 | 潍坊市宇宏石油机械有限公司 | Casing damage well repairing tool and repairing method |
| CN111207252A (en) * | 2020-02-18 | 2020-05-29 | 王广武 | Connecting structure of metal pipe composite pipe outside inner resin pipe and manufacturing method thereof |
| CN111472708A (en) * | 2020-03-23 | 2020-07-31 | 中国石油天然气股份有限公司 | Casing pipe patching pipe for casing damage well restoration and patching method thereof |
| CN111852373A (en) * | 2020-06-24 | 2020-10-30 | 中国石油天然气股份有限公司 | Thermosensitive high-temperature shape memory polymer sleeve patching process |
| CN113846984B (en) * | 2021-09-23 | 2024-06-28 | 瑞诺思新能源科技(北京)有限公司 | Electric energy driven expansion tool assembly and method for realizing expansion pipe patch |
-
2021
- 2021-12-31 CN CN202111670388.2A patent/CN116411851A/en active Pending
-
2022
- 2022-12-01 WO PCT/CN2022/135955 patent/WO2023124754A1/en unknown
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| Publication number | Publication date |
|---|---|
| WO2023124754A1 (en) | 2023-07-06 |
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