CN215672072U - High strength directly links type oil pipe - Google Patents
High strength directly links type oil pipe Download PDFInfo
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- CN215672072U CN215672072U CN202122205420.1U CN202122205420U CN215672072U CN 215672072 U CN215672072 U CN 215672072U CN 202122205420 U CN202122205420 U CN 202122205420U CN 215672072 U CN215672072 U CN 215672072U
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Abstract
The utility model relates to a high-strength direct-connected oil pipe which comprises a pipe body external thread end, a pipe body internal thread end, a middle part and an overflowing channel, wherein the periphery of the pipe body external thread end is provided with an external thread end thickened part, and the periphery of the pipe body internal thread end is provided with an internal thread end thickened part.
Description
Technical Field
The utility model relates to the technical field of oil extraction pipes, in particular to a non-elevation strength direct-connected oil pipe which is used for double pipe column design of gas injection and oil extraction in the exploitation of a heavy oil well and the underground operation.
Background
At present, in the process of thick oil recovery in an oil field, two 88.90 multiplied by 6.45mm flat oil pipes are usually needed to carry out gas injection and oil recovery double-pipe column design, a common oil pipe with a coupling is adopted, and in order to prevent the interference of a coupling bearing surface when processes such as well workover, hot washing paraffin removal, shaft viscosity reduction and the like are carried out at the later stage, the two pipe columns need to be lifted simultaneously, so that the production efficiency is low, and the cost is high; and because the space of the casing annular pipe column is limited, the lower two conventional standard oil pipes with the coupling result in small flow area of the oil pipe, and the problems of low gas injection efficiency and low oil extraction efficiency exist.
Disclosure of Invention
The utility model aims to overcome the defects of the traditional technology and provide a high-strength direct-connection type oil pipe which replaces a standard oil pipe with a hoop with the specification of 88.90 multiplied by 6.45mm, can meet the same strength requirement, can effectively prevent interference between pipe columns, can increase the flow area of the pipe columns to the maximum efficiency and effectively utilizes the annular space of the pipe columns.
The aim of the utility model is achieved by the following technical measures: the utility model provides a high strength directly links type oil pipe, includes body external screw thread end, body internal thread end, intermediate part, overflows the passageway, is equipped with external screw thread end thickening portion in the periphery of body external screw thread end, is equipped with internal thread end thickening portion in the periphery of body internal thread end, is equipped with the body external screw thread in the periphery of external screw thread end thickening portion, and the inside circumference of internal thread end thickening portion is equipped with the body internal thread.
As a further improvement of the above technical solution:
the outer diameter D4 and the inner diameter D1 of the thickened parts of the external thread end and the internal thread end are both 100.00mm and 85.00mm respectively.
The external thread of the pipe body adopts 8 teeth/inch hook-shaped buttress thread, the external thread end of the pipe body is provided with an external thread end face, and the external thread end face is perpendicular to the central axis of the high-strength direct-connected oil pipe.
Be equipped with the conical surface between external screw thread terminal surface and the body external screw thread, external screw thread end thickening portion length Leu: not less than 85.00 mm.
The internal thread of the pipe body adopts 8 tooth/inch hook-shaped buttress thread, the internal thread end of the pipe body is internally provided with an internal thread end face, and the internal thread end face is perpendicular to the central axis of the high-strength direct-connected oil pipe.
External screw thread terminal surface and the inseparable laminating of internal thread terminal surface, internal thread end thickening portion length Liu: not less than 90.00 mm.
The guide surface angles of the hook-shaped buttress threads adopted by the external threads and the internal threads of the pipe body are both 10-15 degrees, and the bearing surface angles are both-3-0 degrees.
The height of the external thread of the pipe body is 0.80mm, the taper is 1:16, and the length M from the end face of the external thread to a reference surface is as follows: 37.05mm, reference plane pitch diameter E1: 92.679mm, thrust taper length L1: 5.00mm, effective thread length L2: 75.70mm, length L3 from the male thread end face to the male thread thrust end face: 80.70 mm.
The height of the internal thread of the pipe body is 1.00mm, the taper is 1:16, and the length M' from the end face of the internal thread to a reference surface is as follows: 38.449mm, reference plane pitch diameter E1': 92.679mm, effective thread length L2': 76.30mm, length L3' from the end face of the internal thread to the end face of the internal thread thrust: 80.30 mm.
The outer diameter of the middle part is 99.00mm, the wall thickness is 6.50mm, and the inner diameter of the flow passage is 86.00 mm.
Due to the adoption of the technical scheme, compared with the prior art, the utility model has the advantages that: the direct-connected oil pipe adopts a direct-connected structure with the inner threads and the outer threads processed at the two ends respectively, the pipe end of the oil pipe is thickened by adopting a pipe end thickening technology, and hook-type buttress threads are combined, so that the working efficiency of well repair, paraffin removal and the like is improved, the connection efficiency is ensured, the flow area of the oil pipe is increased, various indexes can meet the use requirements of an oil field, the economic and efficient development of the oil field is ensured, and the production management difficulty of the oil field is reduced.
The utility model is further described with reference to the following figures and detailed description.
Drawings
FIG. 1 is a schematic structural diagram of a high-strength direct-connection oil pipe according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of an upper end of an external thread end of a pipe body of a high-strength direct-connection type oil pipe according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of an upper end of a threaded end in a tube body of a high-strength direct-connection oil tube according to an embodiment of the present invention;
FIG. 4 is an enlarged view of a portion A of FIG. 2;
fig. 5 is a partially enlarged view of a portion B in fig. 3.
In the figure, 11-the external thread end of the tube body, 111-the thickening of the external thread end, 1111-the external thread of the tube body, 12-the internal thread end of the tube body, 121-the thickening of the internal thread end, 1211-the internal thread of the tube body. 13-intermediate part, 14-flow-through channel.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to 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", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Example (b):
as shown in fig. 1-5, the high-strength direct-connection oil pipe comprises a pipe body external thread end 11, a pipe body internal thread end 12, an intermediate part 13 and a flow passage 14.
The outer periphery of the external thread end 11 of the tube body is provided with an external thread end thickened part 111, the outer periphery of the internal thread end 12 of the tube body is provided with an internal thread end thickened part 121, the external diameter D4 of the external thread end thickened part 111 and the internal thread end thickened part 121 are both 100.00mm, and the internal diameter D1 is both 85.00 mm. The intermediate portion 13 had an outer diameter of 99.00mm and a wall thickness of 6.50 mm. The internal diameter of the flow passage 14 is 86.00 mm.
Be equipped with body external screw thread 1111 in the periphery of external screw thread end thickening portion 111, body external screw thread 1111 adopts 8 tooth/inch colludes the shape buttress thread that appears, collude the shape buttress thread and can effectively improve body tensile strength, body external screw thread end 11 has external screw thread terminal surface 1111-1, external screw thread terminal surface 1111-1 and the perpendicular setting of axis that the type oil pipe is directly connected to the high strength, be equipped with conical surface 1111-2 between external screw thread terminal surface 1111-1 and the body external screw thread 1111, the smooth transition of external screw thread terminal surface 1111-1 to body external screw thread can be guaranteed to conical surface 1111-2, and effectively guarantee the intensity of thread tip, external screw thread end thickening portion 111 length Leu: not less than 85.00 mm.
The internal thread 1211 is arranged in the internal circumferential direction of the internal thread end thickened portion 121, the internal thread 1211 of the pipe body adopts 8 teeth/inch hook-shaped buttress threads, the hook-shaped buttress threads can effectively improve the tensile strength of the pipe body, an internal thread end surface 1211-1 is arranged inside the internal thread end 12 of the pipe body, the internal thread end surface 1211-1 is perpendicular to a central axis of a high-strength direct-connection type oil pipe, the external thread end surface 1111-1 is tightly attached to the internal thread end surface 1211-1 to play a role in torsion resistance and sealing, and the length Liu of the internal thread end thickened portion 121 is as follows: not less than 90.00 mm.
The guide surface angles of the hook-shaped buttress threads adopted by the pipe body external thread 1111 and the pipe body internal thread 1211 are both 10-15 degrees, the bearing surface angle is-3-0 degrees, the height of the pipe body external thread 1111 is 0.80mm, the taper is 1:16, and the length from the external thread end surface to a reference surface is M: 37.05mm, reference plane pitch diameter E1: 92.679mm, thrust taper length L1: 5.00mm, effective thread length L2: 75.70mm, length L3 from the male thread end face to the male thread thrust end face: 80.70 mm; the height of the internal thread 1211 of the tube body is 1.00mm, the taper is 1:16, and the length from the end face of the internal thread to a reference surface is M': 38.449mm, reference plane pitch diameter E1': 92.679mm, effective thread length L2': 76.30mm, length L3' from the end face of the internal thread to the end face of the internal thread thrust: 80.30 mm.
The pipe body external thread 1111 and the pipe body internal thread 1211 can effectively improve the connection strength of the pipe column, the threads are easily buckled when screwed, the stress borne by each part after the threads are screwed is reasonably distributed, and the connection performance of the threads is ensured.
During the use, high strength directly links type oil pipe through body external screw thread end 11 and body internal screw thread end 12 hookup together, goes into the well under one is connected, adopts pipe end thickening technique to thicken the oil pipe end, can the effectual joint strength that strengthens the joint to the increase annular space availability factor of maximum efficiency increases the antitorque terminal surface setting of tip, can effectively strengthen the antitorque performance of tubular column, and plays supplementary sealed effect. The direct connection type structure can be used for conveniently preventing the interference of a coupling bearing surface during the processes of well repair, hot washing paraffin removal, shaft viscosity reduction and the like in the later stage, and is convenient for the use of an oil field.
Compared with a standard oil pipe with the specification of 88.90 multiplied by 6.45mm, the utility model has the advantages that the external diameter of the internal thread is reduced, the wall thickness is increased, the inner hole is increased, the effective diameter of the actual oil flow channel is 86.00mm, the oil passing efficiency is ensured, the mutual noninterference between pipe columns is ensured when the pipe columns are lifted, and the performances are as follows:
the data are calculated by taking P110 steel grade oil pipe and the minimum yield strength of 758 MPa. The data show that the utility model not only can meet the field requirements of oil fields, but also can replace standard tubing with collar with the specification of 88.90 multiplied by 6.45mm to be used in the oil fields.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A high strength directly links type oil pipe which characterized in that: including body external screw thread end (11), body internal thread end (12), intermediate part (13), overflow passageway (14), be equipped with external screw thread end thickening portion (111) in the periphery of body external screw thread end (11), be equipped with internal thread end thickening portion (121) in the periphery of body internal thread end (12), be equipped with body external screw thread (1111) in the periphery of external screw thread end thickening portion (111), the inside circumference of internal thread end thickening portion (121) is equipped with body internal thread (1211).
2. The high strength direct connection type oil pipe according to claim 1, wherein: the external diameter D4 and the internal diameter D1 of the external thread end thickening part (111) and the internal thread end thickening part (121) are both 100.00mm and 85.00mm respectively.
3. The high strength direct connection type oil pipe according to claim 2, wherein: the pipe body external thread (1111) adopts 8 tooth/inch hook-shaped buttress thread, the pipe body external thread end (11) is provided with an external thread end surface (1111-1), and the external thread end surface (1111-1) is perpendicular to the central axis of the high-strength direct-connected oil pipe.
4. The high strength direct connection type oil pipe according to claim 3, wherein: be equipped with conical surface (1111-2) between external screw thread terminal surface (1111-1) and body external screw thread (1111), external screw thread end thickening portion (111) length Leu: not less than 85.00 mm.
5. The high strength direct connection type oil pipe according to claim 4, wherein: the internal thread (1211) of the pipe body adopts 8-tooth/inch hook-shaped buttress thread, an internal thread end face (1211-1) is arranged inside the internal thread end (12) of the pipe body, and the internal thread end face (1211-1) is perpendicular to the central axis of the high-strength direct-connection oil pipe.
6. The high strength direct connection type oil pipe according to claim 5, wherein: the external thread end face (1111-1) is tightly attached to the internal thread end face (1211-1), and the length Liu of the thickened part (121) of the internal thread end is as follows: not less than 90.00 mm.
7. The high strength direct connection type oil pipe according to claim 6, wherein: the guide surface angles of the hook-shaped buttress threads adopted by the external thread (1111) and the internal thread (1211) of the tube body are both 10-15 degrees, and the bearing surface angles are both-3-0 degrees.
8. The high strength direct connection type oil pipe according to claim 7, wherein: the height of the external thread (1111) of the pipe body is 0.80mm, the taper is 1:16, the length M from the end face of the external thread to a reference surface is as follows: 37.05mm, reference plane pitch diameter E1: 92.679mm, thrust taper length L1: 5.00mm, effective thread length L2: 75.70mm, length L3 from the male thread end face to the male thread thrust end face: 80.70 mm.
9. The high strength direct connection type oil pipe of claim 8, wherein: the height of the internal thread (1211) of the tube body is 1.00mm, the taper is 1:16, and the length from the end face of the internal thread to a reference surface is M': 38.449mm, reference plane pitch diameter E1': 92.679mm, effective thread length L2': 76.30mm, length L3' from the end face of the internal thread to the end face of the internal thread thrust: 80.30 mm.
10. The high strength direct connection type oil pipe of claim 9, wherein: the outer diameter of the middle part (13) is 99.00mm, the wall thickness is 6.50mm, and the inner diameter of the flow passage (14) is 86.00 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122205420.1U CN215672072U (en) | 2021-09-13 | 2021-09-13 | High strength directly links type oil pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122205420.1U CN215672072U (en) | 2021-09-13 | 2021-09-13 | High strength directly links type oil pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215672072U true CN215672072U (en) | 2022-01-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122205420.1U Active CN215672072U (en) | 2021-09-13 | 2021-09-13 | High strength directly links type oil pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215672072U (en) |
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2021
- 2021-09-13 CN CN202122205420.1U patent/CN215672072U/en active Active
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