CN212508124U - Three-dimensional sealed tensile oil casing joint - Google Patents
Three-dimensional sealed tensile oil casing joint Download PDFInfo
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- CN212508124U CN212508124U CN202021090671.9U CN202021090671U CN212508124U CN 212508124 U CN212508124 U CN 212508124U CN 202021090671 U CN202021090671 U CN 202021090671U CN 212508124 U CN212508124 U CN 212508124U
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Abstract
The utility model provides a three-dimensional sealed tensile oil casing connects, include: the sealing device comprises an external thread part, an internal thread part, an external thread, an excircle sealing section, an external thread part end face, an external thread part boss, an external thread part concave table, an internal thread, an inner hole sealing section, an internal thread part end face, an internal thread part concave table and an internal thread part boss; the external thread piece is connected with the internal thread piece in a thread mode; the external thread part is provided with an external thread, an excircle sealing section, an external thread part end face, an external thread part boss and an external thread part concave platform; the internal thread piece is provided with an internal thread, an inner hole sealing section, an internal thread piece end face, an internal thread piece concave platform and an internal thread piece boss. The utility model discloses a to the improvement of a three-dimensional sealed tensile oil casing joint, it is reasonable to have a structural design, constitutes four seal structure, enables the oil casing pipe and guarantees the advantage of sealing performance under tensile state to effectual problem and the not enough that has solved current device and appear.
Description
Technical Field
The utility model relates to an oil pipe and sheathed tube connecting piece technical field for oil, natural gas probing, more specifically the utility model relates to a three-dimensional sealed tensile oil casing connects that says so especially relates to.
Background
Steel casing and oil pipe must be used in the drilling and production process of petroleum and natural gas, wherein the casing refers to the pipe used for lining after drilling, and the function is to prevent the well wall from flowing and collapsing; the oil pipe is used for collecting oil and natural gas, and downhole fluid is conveyed to the surface of the stratum through the oil pipe; the connecting piece for lengthening the oil pipe and the casing pipe is called a coupling. Along with the continuous increase of drilling and production depth, the oil casing must be lengthened, and the lengthening of the oil pipe and the casing is realized by screwing the external thread at the end part of the oil casing pipe body and the internal thread of the coupling. The sealing structure is realized by sealing the end face of the oil casing pipe and the inner end face of the coupling, and the threads only play a role in connection.
When the oil casing is used in a stretching state, sealing failure is easy to occur, and the problem that the sealing performance of the oil casing in the stretching state is a worldwide problem in oil casing production is solved.
In view of this, research and improvement are carried out to solve the existing problems, and a three-dimensional sealing tensile oil casing joint is provided, which has the advantages of reasonable structural design, four sealing structures and capability of ensuring the sealing performance of the oil casing in a stretching state, and aims to achieve the purposes of solving the problems and improving the practical value through the technology.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a three-dimensional sealed tensile oil casing connects to propose in solving above-mentioned background art, it is reasonable to have a structural design, constitutes four seal structure, enables the problem and the not enough of the advantage of oil casing pipe assurance sealing performance under tensile state.
In order to achieve the above object, the utility model provides a three-dimensional sealed tensile oil casing joint is reached by following specific technological means:
a three-dimensional sealed tensile oil casing joint, comprising: the sealing device comprises an external thread part, an internal thread part, an external thread, an excircle sealing section, an external thread part end face, an external thread part boss, an external thread part concave table, an internal thread, an inner hole sealing section, an internal thread part end face, an internal thread part concave table and an internal thread part boss; the external thread piece is connected with the internal thread piece in a thread mode; the external thread part is provided with an external thread, an excircle sealing section, an external thread part end face, an external thread part boss and an external thread part concave platform; the internal thread piece is provided with an internal thread, an inner hole sealing section, an internal thread piece end face, an internal thread piece concave platform and an internal thread piece boss.
As the further optimization of this technical scheme, the utility model relates to a three-dimensional sealed tensile oil casing connects excircle sealing segment is interference fit with the hole sealing segment, and the magnitude of interference of excircle sealing segment and hole sealing segment is 0.02 ~ 0.08 mm.
As this technical scheme's further optimization, the utility model relates to a three-dimensional sealed tensile oil casing connects external screw thread spare terminal surface is interference fit with interior screw thread spare terminal surface, and the magnitude of interference of external screw thread spare terminal surface and interior screw thread spare terminal surface is 0.02 ~ 0.06 mm.
As this technical scheme's further optimization, the utility model relates to a three-dimensional sealed tensile oil casing connects external screw thread spare boss is interference fit with internal screw thread spare concave station, and the magnitude of interference of external screw thread spare boss and internal screw thread spare concave station is 0.02 ~ 0.06 mm.
As this technical scheme's further optimization, the utility model relates to a three-dimensional sealed tensile oil casing connects external screw thread spare concave station is interference fit with internal screw thread spare boss, and the magnitude of interference of external screw thread spare concave station and internal screw thread spare boss is 0.02 ~ 0.06 mm.
Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage:
1. the utility model discloses a sealed section of excircle is interference fit with the sealed section of hole, and the sealed section of excircle and the magnitude of interference of the sealed section of hole be 0.02 ~ 0.08 mm's setting, form first seal structure, enable the oil jacket pipe and guarantee sealing performance under tensile state.
2. The utility model discloses an external screw thread spare terminal surface is interference fit with the internal screw thread spare terminal surface, and the magnitude of interference of external screw thread spare terminal surface and internal screw thread spare terminal surface is 0.02 ~ 0.06 mm's setting, forms the second and says seal structure, enables the oil jacket pipe and guarantees sealing performance under tensile state.
3. The utility model discloses an external screw thread spare boss is interference fit with the internal screw thread spare concave station, and the magnitude of interference of external screw thread spare boss and internal screw thread spare concave station is 0.02 ~ 0.06 mm's setting, forms third seal structure, enables the oil sleeve pipe and guarantees sealing performance under tensile state.
4. The utility model discloses an external screw thread spare concave station is interference fit with interior screw thread spare boss, and the magnitude of interference of external screw thread spare concave station and interior screw thread spare boss is 0.02 ~ 0.06 mm's setting, forms fourth way seal structure, enables the oil jacket pipe and guarantees sealing performance under tensile state.
5. The utility model discloses a to the improvement of a three-dimensional sealed tensile oil casing joint, it is reasonable to have a structural design, constitutes four seal structure, enables the oil casing pipe and guarantees the advantage of sealing performance under tensile state, thereby effectual solution the utility model discloses the problem that proposes in background art one with not enough.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:
fig. 1 is a schematic view of a threaded joint between an external threaded member and an internal threaded member according to the present invention;
FIG. 2 is an enlarged schematic view (before screwing) of the threaded connection and sealing structure between the male screw member and the female screw member;
fig. 3 is an enlarged schematic view of the threaded connection and sealing structure between the male screw member and the female screw member (after screwing).
In the figure: the sealing structure comprises an external thread part 1, an internal thread part 2, an external thread 11, an excircle sealing section 12, an external thread part end face 13, an external thread part boss 14, an external thread part concave table 15, an internal thread 21, an inner hole sealing section 22, an internal thread part end face 23, an internal thread part concave table 24 and an internal thread part boss 25.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
It is to be noted that, in the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Meanwhile, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "connected" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; the connection can be mechanical connection or electrical connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 3, the present invention provides a specific technical implementation of a three-dimensional sealing tensile oil casing joint:
a three-dimensional sealed tensile oil casing joint, comprising: the sealing structure comprises an external thread part 1, an internal thread part 2, an external thread 11, an excircle sealing section 12, an external thread part end face 13, an external thread part boss 14, an external thread part concave table 15, an internal thread 21, an inner hole sealing section 22, an internal thread part end face 23, an internal thread part concave table 24 and an internal thread part boss 25; the external thread member 1 is connected with the internal thread member 2 in a thread mode; the external thread member 1 is provided with an external thread 11, an excircle sealing section 12, an external thread member end face 13, an external thread member boss 14 and an external thread member concave platform 15; the internal thread member 2 is provided with an internal thread 21, an inner hole sealing section 22, an internal thread member end face 23, an internal thread member concave platform 24 and an internal thread member convex platform 25.
Specifically, the outer circle sealing section 12 and the inner hole sealing section 22 are in interference fit, the interference magnitude of the outer circle sealing section 12 and the inner hole sealing section 22 is 0.02-0.08 mm, a first sealing structure is formed, and the sealing performance of the oil casing pipe can be guaranteed in a stretching state.
Specifically, the external thread end face 13 and the internal thread end face 23 are in interference fit, interference between the external thread end face 13 and the internal thread end face 23 is 0.02-0.06 mm, a second sealing structure is formed, and sealing performance of the oil sleeve can be guaranteed in a stretching state.
Specifically, the boss 14 of the external thread part is in interference fit with the concave table 24 of the internal thread part, the interference magnitude of the boss 14 of the external thread part and the concave table 24 of the internal thread part is 0.02-0.06 mm, a third sealing structure is formed, and the sealing performance of the oil casing pipe can be guaranteed in a stretching state.
Specifically, external screw thread spare concave station 15 is interference fit with internal screw thread spare boss 25, and the magnitude of interference of external screw thread spare concave station 15 and internal screw thread spare boss 25 is 0.02 ~ 0.06mm, forms fourth seal structure, enables the oil jacket pipe and guarantees sealing performance under tensile state.
The method comprises the following specific implementation steps:
when the three-dimensional sealing tensile oil casing joint is used, the outer circle sealing section 12 and the inner hole sealing section 22 are in interference fit, a first sealing structure is formed, the outer thread part end face 13 and the inner thread part end face 23 are in interference fit, a second sealing structure is formed, the outer thread part boss 14 and the inner thread part boss 24 are in interference fit, a third sealing structure is formed, the outer thread part boss 15 and the inner thread part boss 25 are in interference fit, a fourth sealing structure is formed, the three-dimensional sealing tensile oil casing joint has the advantages of being reasonable in structural design, four-dimensional sealing structures are formed, the sealing performance of the oil casing under the tensile state can be guaranteed, and the problem that the sealing performance under the tensile state of the oil casing is difficult in oil casing production is solved.
In summary, the following steps: according to the three-dimensional sealing tensile oil casing joint, the outer circle sealing section and the inner hole sealing section are in interference fit, and the interference magnitude of the outer circle sealing section and the inner hole sealing section is 0.02-0.08 mm, so that a first sealing structure is formed, and the sealing performance of an oil casing can be ensured in a stretching state; the end face of the external thread part is in interference fit with the end face of the internal thread part, and the interference magnitude of the end face of the external thread part and the end face of the internal thread part is 0.02-0.06 mm, so that a second sealing structure is formed, and the sealing performance of the oil sleeve can be ensured in a stretching state; the boss of the external thread part is in interference fit with the concave table of the internal thread part, and the interference magnitude of the boss of the external thread part and the concave table of the internal thread part is 0.02-0.06 mm, so that a third sealing structure is formed, and the sealing performance of the oil sleeve can be ensured in a stretching state; the external thread member concave station and the internal thread member boss are in interference fit, and the interference magnitude of the external thread member concave station and the internal thread member boss is 0.02-0.06 mm, so that a fourth sealing structure is formed, and the sealing performance of the oil sleeve can be ensured in a stretching state; through the improvement to a three-dimensional sealed tensile oil casing connects, it is reasonable to have structural design, constitutes four seal structure, enables the oil casing and guarantees the advantage of sealing performance under tensile state, thereby effectual solution the utility model discloses the problem that proposes in the background art is with not enough.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A three-dimensional sealed tensile oil casing joint, comprising: the sealing device comprises an external thread part (1), an internal thread part (2), an external thread (11), an excircle sealing section (12), an external thread part end face (13), an external thread part boss (14), an external thread part concave table (15), an internal thread (21), an inner hole sealing section (22), an internal thread part end face (23), an internal thread part concave table (24) and an internal thread part boss (25); the method is characterized in that: the external thread piece (1) is connected with the internal thread piece (2) in a thread mode; the external thread piece (1) is provided with an external thread (11), an excircle sealing section (12), an external thread piece end face (13), an external thread piece boss (14) and an external thread piece concave platform (15); the internal thread piece (2) is provided with an internal thread (21), an inner hole sealing section (22), an internal thread piece end face (23), an internal thread piece concave platform (24) and an internal thread piece boss (25).
2. The three-dimensional sealed tensile oil casing joint according to claim 1, wherein: the outer circle sealing section (12) and the inner hole sealing section (22) are in interference fit, and the interference magnitude of the outer circle sealing section (12) and the inner hole sealing section (22) is 0.02-0.08 mm.
3. The three-dimensional sealed tensile oil casing joint according to claim 1, wherein: the external screw member terminal surface (13) is interference fit with the internal screw member terminal surface (23), and the magnitude of interference of external screw member terminal surface (13) and internal screw member terminal surface (23) is 0.02 ~ 0.06 mm.
4. The three-dimensional sealed tensile oil casing joint according to claim 1, wherein: the external screw member boss (14) and the internal screw member concave station (24) are in interference fit, and the interference magnitude of the external screw member boss (14) and the internal screw member concave station (24) is 0.02-0.06 mm.
5. The three-dimensional sealed tensile oil casing joint according to claim 1, wherein: the external screw thread member concave station (15) and the internal screw thread member boss (25) are in interference fit, and the interference magnitude of the external screw thread member concave station (15) and the internal screw thread member boss (25) is 0.02-0.06 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021090671.9U CN212508124U (en) | 2020-06-15 | 2020-06-15 | Three-dimensional sealed tensile oil casing joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021090671.9U CN212508124U (en) | 2020-06-15 | 2020-06-15 | Three-dimensional sealed tensile oil casing joint |
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| Publication Number | Publication Date |
|---|---|
| CN212508124U true CN212508124U (en) | 2021-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021090671.9U Active CN212508124U (en) | 2020-06-15 | 2020-06-15 | Three-dimensional sealed tensile oil casing joint |
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|---|---|
| CN (1) | CN212508124U (en) |
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