CN117780270A - Special threaded joint of oil casing for high-temperature well - Google Patents
Special threaded joint of oil casing for high-temperature well Download PDFInfo
- Publication number
- CN117780270A CN117780270A CN202410206231.1A CN202410206231A CN117780270A CN 117780270 A CN117780270 A CN 117780270A CN 202410206231 A CN202410206231 A CN 202410206231A CN 117780270 A CN117780270 A CN 117780270A
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- threaded joint
- ring
- joint body
- connecting pipe
- sealing
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- 238000007789 sealing Methods 0.000 claims abstract description 51
- 230000000694 effects Effects 0.000 abstract description 9
- 238000009434 installation Methods 0.000 description 18
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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- 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
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Abstract
The invention relates to the technical field of threaded connectors, in particular to a special threaded connector of an oil casing for a high-temperature well, which comprises a threaded connector body, a telescopic structure, a driving structure, an anti-skid structure, an anti-rotation structure and a sealing structure; oil casing body through among the extending structure is connected with another oil casing body through two screwed joint bodies and connecting pipe, both can rotate also can slide between connecting pipe and the screwed joint body, make things convenient for the dismantlement of oil casing body, avoid causing the damage to the oil casing body of the other end, the flexibility of dismantling has been improved, and screwed joint body adopts airtight screwed connection joint with the end connection part of oil casing body, the internal conical surface of screw thread forms radial interference fit with the external conical surface, prevent high-pressure gas leakage, the screw thread shape has improved the connection effect between the two for the zigzag design, make junction inseparabler and stable, seal structure's setting has improved the leakproofness between two connecting pipes.
Description
Technical Field
The invention relates to the technical field of threaded connectors, in particular to a special threaded connector of an oil casing for a high-temperature well.
Background
The high-temperature high-pressure well refers to a well with the temperature of an underground oil reservoir higher than 150 ℃ and the pressure higher than 70MPa, after well drilling and completion, the high-temperature well ensures the normal operation of the whole well after well completion, petroleum can be conveyed through an oil sleeve, and the oil sleeve is spliced through a threaded joint in the assembly process.
However, the threaded joint is tubular, when one of the oil casings is damaged and needs to be replaced, the oil casing or the threaded joint needs to be rotated to be disassembled, and as the threads at the two ends of the threaded joint are opposite in direction, the other end of the oil casing is influenced or even damaged when the other end of the oil casing is rotated; when the threaded joint rotates, the position distance between the threaded joint and the oil sleeve is changed, and the oil sleeve is inconvenient to detach due to the fact that the two ends of the oil sleeve are both installed with the threaded joint; in the installation process of the oil sleeve, the oil sleeve is usually directly matched with threads on the threaded joint, and a sealing component is not arranged between the threaded joint and the oil sleeve, so that the sealing effect between the threaded joint and the oil sleeve is poor.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a special threaded joint of an oil casing for a high-temperature well.
The technical scheme adopted for solving the technical problems is as follows: the special threaded joint of the oil casing for the high-temperature well comprises a threaded joint body, a telescopic structure arranged on the threaded joint body, a driving structure arranged on the threaded joint body, an anti-slip structure arranged on the driving structure and a sealing structure arranged on the telescopic structure;
the telescopic structure comprises a connecting pipe, the connecting pipe is rotationally connected to the screwed joint body, trapezoidal threads are arranged at the end part of the screwed joint body, tight distances are reserved among a plurality of trapezoidal threads, an oil sleeve body is connected to the screwed joint body through threads, the trapezoidal threads are arranged on the connecting part of the oil sleeve body and the screwed joint body, the tight distances among the plurality of threads are reserved, two first sealing rings are arranged in two first sealing grooves on the screwed joint body, two first sealing rings are in collision with the connecting pipe, a second sealing ring is arranged on the screwed joint body, and the oil sleeve body is in collision with the second sealing ring.
Specifically, the driving structure comprises a connecting ring, wherein the connecting ring is fixedly connected to the threaded joint body, a plurality of connecting blocks are fixedly connected to the connecting ring, and a plurality of fixing rings are fixedly connected to the connecting blocks.
Specifically, a driving groove is formed between adjacent connecting blocks, and the connecting blocks are of a trapezoid structure.
Specifically, a plurality of connecting blocks are distributed in a circumferential array with respect to the center of the threaded joint body, and the diameter of the connecting ring is smaller than that of the fixing ring.
Specifically, the antiskid structure includes the fixed block, sliding connection has the fixed block between go-between and the fixed ring, sliding connection has the slider on the fixed block, it is connected with the lead screw to rotate on the slider, contradict between lead screw and the fixed ring.
Specifically, sliding connection is between the guide way on slider and the fixed block, the bottom of lead screw is located the fixed slot on the solid fixed ring.
Specifically, the fixed slot is annular setting, cooperate the use between lead screw and the outer hexagonal spanner.
Specifically, the connecting pipe is fixed through preventing rotating the structure, prevent rotating the structure and include the installation piece, install a plurality of installation pieces on the connecting pipe, fixedly connected with inserted bar on the installation piece, one of them peg graft between the slot on inserted bar and the fixed block, a plurality of the installation piece is circumference array distribution about the center of connecting pipe.
Specifically, seal structure includes the third sealing washer, be equipped with the third sealing washer on the connecting pipe, be equipped with on the connecting pipe with third sealing washer assorted second seal groove.
Specifically, a plurality of mounting holes are formed in the connecting pipe, and the plurality of mounting holes are distributed in a circumferential array with respect to the center of the connecting pipe.
The beneficial effects of the invention are as follows:
(1) According to the special threaded joint of the oil casing for the high-temperature well, the telescopic structure is arranged on the threaded structure body, the oil casing body in the telescopic structure is connected with the other oil casing body through the two threaded joint bodies and the connecting pipe, the connecting pipe rotates between the threaded joint bodies, when the oil casing body at one end is disassembled, the oil casing body at the other end cannot be influenced, meanwhile, the oil casing body at the other end is prevented from being damaged, and the threaded joint body slides a certain distance through sliding between the threaded joint body and the connecting pipe, so that the disassembly flexibility is improved, and the connecting effect between the threaded joint body and the oil casing body is improved due to the fact that the trapezoidal threads are adopted at the end connecting part of the threaded joint body and the oil casing body in a tight distance mode, so that the connecting part is more compact and stable.
(2) According to the special threaded connector for the oil casing for the high-temperature well, the driving structure is arranged on the threaded pipe connector body, and the connecting block in the driving structure is matched with the spanner to drive the threaded pipe connector body to rotate, so that the labor-saving effect can be achieved when the oil casing body is disassembled.
(3) According to the special threaded joint of the oil casing for the high-temperature well, the anti-skid structure is arranged on the driving structure, and the fixed block in the anti-skid structure is abutted against the connecting pipe, so that sliding between the connecting pipe and the threaded joint body after installation is completed is avoided.
(4) According to the special threaded joint of the oil casing for the high-temperature well, the connecting pipe is fixed through the anti-rotation structure, the fixed block in the anti-slip structure is matched with the inserted link in the anti-rotation structure, so that the fixed connection pipe and the connecting pipe after installation are conveniently fixed, and the rotation between the connecting pipe and the connecting pipe is avoided.
(5) According to the special threaded joint of the oil casing for the high-temperature well, the sealing structure is arranged on the telescopic structure, and the sealing structure improves the sealing performance between the two connecting pipes.
Drawings
The invention will be further described with reference to the drawings and examples.
FIG. 1 is a schematic view showing the overall structure of a special threaded joint for a high temperature well oil casing according to a preferred embodiment of the present invention;
FIG. 2 is an enlarged schematic view of the portion A shown in FIG. 1;
FIG. 3 is a schematic diagram of the connection structure of the oil casing body and the threaded joint body according to the present invention;
FIG. 4 is a schematic view of a connection structure of a connection pipe and a threaded joint body according to the present invention;
FIG. 5 is an enlarged schematic view of the B-section structure shown in FIG. 4;
FIG. 6 is a schematic view of the connection structure of the connecting ring and the threaded joint body according to the present invention;
FIG. 7 is an enlarged schematic view of the structure of the portion C shown in FIG. 6;
fig. 8 is an enlarged schematic view of the D section structure shown in fig. 6.
In the figure: 1. a threaded joint body; 2. a telescopic structure; 201. a connecting pipe; 202. a first seal ring; 203. a first seal groove; 204. a second seal ring; 205. an oil jacket body; 3. a driving structure; 301. a connecting ring; 302. a connecting block; 303. a fixing ring; 304. a driving groove; 4. an anti-slip structure; 401. a fixed block; 402. a slide block; 403. a screw rod; 404. a fixing groove; 405. a guide groove; 5. an anti-rotation structure; 501. a mounting block; 502. a rod; 503. a slot; 6. a sealing structure; 601. a third seal ring; 602. a second seal groove; 603. and (5) mounting holes.
Detailed Description
The invention is further described in connection with the following detailed description in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
As shown in fig. 1 to 8, the special screwed joint of the oil casing for the high-temperature well comprises a screwed joint body 1, a telescopic structure 2 arranged on the screwed joint body 1, a driving structure 3 arranged on the screwed joint body 1, an anti-slip structure 4 arranged on the driving structure 3 and a sealing structure 6 arranged on the telescopic structure 2; the telescopic structure 2 comprises a connecting pipe 201, the connecting pipe 201 is rotationally connected to the screwed joint body 1, trapezoidal threads are arranged at the end part of the screwed joint body 1, tight distances among a plurality of trapezoidal threads are reserved, an oil sleeve body 205 is connected to the screwed joint body 1 through threads, trapezoidal threads are also reserved on the connecting part of the oil sleeve body 205 and the screwed joint body 1, tight distances among a plurality of threads are reserved, two first sealing rings 202 are arranged in two first sealing grooves 203 on the screwed joint body 1, two first sealing rings 202 are in collision with the connecting pipe 201, a second sealing ring 204 is arranged on the screwed joint body 1, and the oil sleeve body 205 is in collision with the second sealing ring 204.
Specifically, the driving structure 3 includes a connection ring 301, the threaded joint body 1 is fixedly connected with the connection ring 301, the connection ring 301 is fixedly connected with a plurality of connection blocks 302, a plurality of connection blocks 302 are fixedly connected with a fixed ring 303, driving grooves 304 are formed between adjacent connection blocks 302, the connection blocks 302 are in a trapezoid structure, the plurality of connection blocks 302 are distributed in a circumferential array about the center of the threaded joint body 1, the diameter of the connection ring 301 is smaller than that of the fixed ring 303, when the fixed block 401 is detached, the connection ring 301 can be inserted into the driving grooves 304 formed between the two connection blocks 302 through a spanner, the spanner drives the connection ring 301 to rotate through the connection blocks 302, the connection ring 301 drives the threaded joint body 1 to rotate with the connection pipes 201, at this time, two adjacent connecting pipes 201 are fixed by bolts, so that the threaded joint body 1 can rotate and slide into the connecting pipes 201, the oil sleeve body 205 and the threaded joint body 1 are in threaded fit and slide between the threaded joint bodies 1, the other end of the oil sleeve body 205 and the threaded joint body 1 at the other end are opposite in threaded direction, no influence is caused, meanwhile, the oil sleeve body 205 is not in contact with the second sealing ring 204 any more, the tightness between the oil sleeve body 205 and the threaded joint body 1 is improved by the arrangement of the second sealing ring 204, the tightness between the connecting pipes 201 and the threaded joint body 1 is improved by the first sealing ring 202 and the first sealing groove 203, meanwhile, the threaded joint body 1 is driven to rotate by the cooperation between a spanner and the connecting block 302, and the labor-saving effect can be achieved when the oil sleeve body 205 is disassembled, and through taking place to slide between screwed joint body 1 and the connecting pipe 201, make screwed joint body 1 slip a certain distance when dismantling, improved the dismantlement flexibility.
Specifically, the anti-slip structure 4 includes a fixed block 401, a fixed block 401 is slidably connected between the connecting ring 301 and the fixed ring 303, a sliding block 402 is slidably connected on the fixed block 401, a screw rod 403 is rotatably connected on the sliding block 402, the screw rod 403 abuts against the fixed ring 303, the sliding block 402 is slidably connected with a guide groove 405 on the fixed block 401, the bottom of the screw rod 403 is located in a fixed groove 404 on the fixed ring 303, the fixed groove 404 is in a ring shape, the screw rod 403 is matched with an external hexagonal wrench, when the oil casing body 205 needs to be disassembled, firstly, the screw rod 403 is rotated by the external hexagonal wrench through the insertion between the external hexagonal wrench and the hexagonal block on the screw rod 403, and because the screw rod 403 is in threaded connection with the sliding block 402, the screw rod 403 slides upwards on the sliding block 402, so that the screw rod 403 moves upwards to be no longer located in the fixed groove 404, at this time, the fixing block 401 can be detached from the connection ring 301 and the fixing ring 303, after the oil bushing body 205 and the screwed joint body 1 are installed, the fixing block 401 slides left and right between the connection ring 301 and the fixing ring 303, so that the end of the fixing block 401 facing the connection pipe 201 is in contact with the connection pipe 201, after sliding, the end of the fixing block 401 facing the connection pipe 201 slides between the sliding block 402 and the guide groove 405 on the fixing block 401, so that the screw rod 403 is aligned with the fixing groove 404, the fixing block 401 is conveniently fixed by the contact between the screw rod 403 and the fixing ring 303, the connection pipe 201 and the screwed joint body 1 are prevented from sliding after the installation, the oil bushing body 205 is connected with the other oil bushing body 205 through the two screwed joint bodies 1 and the connection pipe 201, and the connection pipe 201 and the screwed joint body 1 can rotate and slide, when dismantling the oil casing body 205 of one end, can not lead to the fact the influence to the oil casing body 205 of the other end, avoid simultaneously causing the damage to the oil casing body 205 of the other end, and through threaded connection between lead screw 403 and the slider 402, be convenient for dismantle the slider 402 with the fixed block 401 between, and screwed joint body 1 adopts trapezoidal screw thread, closely spaced design to improve the connection effect between screwed joint body 1 and the oil casing body 205 with the end connection part of oil casing body 205, make the junction inseparabler and stable.
Specifically, the connecting pipe 201 is fixed through the anti-rotation structure 5, the anti-rotation structure 5 includes the installation piece 501, install a plurality of installation pieces 501 on the connecting pipe 201, fixedly connected with inserted bar 502 on the installation piece 501, one of them inserted bar 502 is pegged graft with the slot 503 on the fixed block 401 between, a plurality of installation pieces 501 are circumference array distribution about the center of connecting pipe 201, and during the installation simultaneously, can make fixed block 401 slide at go-between 301 and fixed ring 303, makes alignment between inserted bar 502 on fixed block 401 and one of them installation piece 501, and when contradicting between fixed block 401 and connecting pipe 201, can make peg graft between slot 503 on the fixed block 401 and the inserted bar 502, peg graft between through fixed block 401 and inserted bar 502, can avoid taking place relative rotation between connecting pipe 201 and screwed joint body 1 after the installation.
Specifically, seal structure 6 includes third sealing washer 601, be equipped with third sealing washer 601 on the connecting pipe 201, be equipped with on the connecting pipe 201 with third sealing washer 601 assorted second seal groove 602, be equipped with a plurality of mounting holes 603 on the connecting pipe 201, a plurality of mounting holes 603 are circumference array distribution about the center of connecting pipe 201, and simultaneously two connecting pipes 201 are when the installation, through placing third sealing washer 601 into the second seal groove 602 on two connecting pipes 201, pass the mounting hole 603 on two connecting pipes 201 in proper order through a plurality of bolts, after the bolt passes mounting hole 603, cooperate the nut to seal two connecting pipes 201, support tightly two connecting pipes 201 through bolt and nut cooperation, support tightly to third sealing washer 601 simultaneously, make sealed effect better.
When the oil sleeve 205 is required to be disassembled, the screw rod 403 is rotated by the external hexagonal wrench through the insertion between the external hexagonal wrench and the hexagonal block on the screw rod 403, the screw rod 403 can slide upwards on the slide block 402 due to the threaded connection between the screw rod 403 and the slide block 402, the screw rod 403 moves upwards until the screw rod 403 is no longer positioned in the fixing groove 404, at the moment, the fixing block 401 can be disassembled from the connection ring 301 and the fixing ring 303, after the oil sleeve 205 is installed with the threaded joint body 1, the fixing block 401 slides left and right between the connection ring 301 and the fixing ring 303, the end part of the fixing block 401 facing the connecting pipe 201 is in contact with the connecting pipe 201, after the sliding, the end part of the fixing block 401 is in contact with the guide groove 405 on the fixing block 401 through the slide block 402, the screw rod 403 is aligned with the fixing groove 404, the screw rod 403 is in contact with the fixing ring 303, the fixing block 401 is convenient to fix, the fixing block 401 is prevented from sliding between the threaded joint body 1 through the fixing block 401 and the connecting pipe 201, the connecting pipe 201 after the installation is completed, the oil sleeve 205 is prevented from being connected with the threaded joint body 1 through the two threaded joint bodies 205, the other end part of the connecting pipe 205 is prevented from being damaged, the threaded joint body is prevented from being connected with the other end part of the connecting pipe 205, and the threaded joint body is prevented from being tightly connected with the threaded joint body 1, and the threaded joint body is prevented from being tightly connected with the threaded joint body is connected with the end part of the connecting pipe 205 through the threaded joint body, and the end part of the connecting pipe 205 through the threaded joint body is a threaded joint 1, the joint is tighter and more stable;
when the connecting ring is installed, the fixing block 401 can slide between the connecting ring 301 and the fixing ring 303, the fixing block 401 is aligned with the inserted rod 502 on one of the installation blocks 501, when the fixing block 401 is in interference with the connecting pipe 201, the inserting slot 503 on the fixing block 401 can be inserted into the inserted rod 502, and the connecting pipe 201 and the threaded joint body 1 can be prevented from relative rotation after installation through the insertion between the fixing block 401 and the inserted rod 502;
when the fixed block 401 is detached, the fixed block 401 can be inserted into a driving groove 304 formed between two connecting blocks 302 through the interference between the wrench and the connecting blocks 302, so that the wrench drives the connecting ring 301 to rotate through the connecting blocks 302, the connecting ring 301 drives the threaded joint body 1 and the connecting pipes 201 to rotate, at the moment, two adjacent connecting pipes 201 are fixed through bolts, so that the threaded joint body 1 can rotate and slide in the connecting pipes 201, the oil sleeve body 205 and the threaded joint body 1 are in threaded fit and slide between the threaded joint bodies 1, the other end of the oil sleeve body 205 and the threaded joint body 1 are in opposite threaded directions, the influence is avoided, meanwhile, the oil sleeve body 205 is not in interference with the second sealing ring 204, the sealing property between the oil sleeve body 205 and the threaded joint body 1 is improved through the arrangement of the second sealing ring 204, the sealing property between the connecting pipes 201 and the threaded joint body 1 is improved through the first sealing groove 203, and the threaded joint body 1 is driven to rotate through the fit between the wrench and the connecting blocks 302, and the threaded joint body 1 can be detached in a labor-saving manner, and the detachment of the oil sleeve body 205 can be realized, and the threaded joint body 1 and the threaded joint 1 can be detached by a certain sliding distance when the threaded joint 1 is detached;
simultaneously, when two connecting pipes 201 are installed, through placing the third sealing ring 601 into the second sealing groove 602 on the two connecting pipes 201, the bolts sequentially penetrate through the mounting holes 603 on the two connecting pipes 201, after the bolts penetrate through the mounting holes 603, the two connecting pipes 201 are sealed by matching nuts, the two connecting pipes 201 are abutted tightly through the matching of the bolts and the nuts, and meanwhile, the third sealing ring 601 is abutted tightly, so that the sealing effect is better.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (3)
1. The special threaded joint of the oil casing for the high-temperature well is characterized by comprising a threaded joint body (1), a telescopic structure (2) arranged on the threaded joint body (1), a driving structure (3) arranged on the threaded joint body (1), an anti-slip structure (4) arranged on the driving structure (3) and a sealing structure (6) arranged on the telescopic structure (2);
the telescopic structure (2) comprises a connecting pipe (201), the connecting pipe (201) is rotationally connected to the threaded joint body (1), trapezoidal threads are arranged at the end part of the threaded joint body (1), tight distances among a plurality of trapezoidal threads are reserved, an oil sleeve body (205) is connected to the threaded joint body (1) through threads, the trapezoidal threads are also reserved on the connecting part of the oil sleeve body (205) and the threaded joint body (1), the tight distances among the plurality of threads are reserved, two first sealing rings (202) are arranged in two first sealing grooves (203) on the threaded joint body (1), two first sealing rings (202) are in collision with the connecting pipe (201), a second sealing ring (204) is arranged on the threaded joint body (1), and the oil sleeve body (205) is in collision with the second sealing ring (204);
the driving structure (3) comprises a connecting ring (301), the connecting ring (301) is fixedly connected to the threaded joint body (1), a plurality of connecting blocks (302) are fixedly connected to the connecting ring (301), and a fixed ring (303) is fixedly connected to the connecting blocks (302); a driving groove (304) is formed between the adjacent connecting blocks (302), and the connecting blocks (302) are of a trapezoid structure; the connecting blocks (302) are distributed in a circumferential array about the center of the threaded joint body (1), and the diameter of the connecting ring (301) is smaller than that of the fixing ring (303);
the anti-slip structure (4) comprises a fixed block (401), the fixed block (401) is connected between the connecting ring (301) and the fixed ring (303) in a sliding manner, a sliding block (402) is connected to the fixed block (401) in a sliding manner, a screw rod (403) is connected to the sliding block (402) in a rotating manner, and the screw rod (403) is in interference with the fixed ring (303); the sliding block (402) is in sliding connection with a guide groove (405) on the fixed block (401), and the bottom of the screw rod (403) is positioned in a fixed groove (404) on the fixed ring (303);
the connecting pipe (201) is fixed through an anti-rotation structure (5), the anti-rotation structure (5) comprises mounting blocks (501), a plurality of mounting blocks (501) are mounted on the connecting pipe (201), inserting rods (502) are fixedly connected to the mounting blocks (501), one inserting rod (502) is inserted into slots (503) on the fixed block (401), and the plurality of mounting blocks (501) are distributed in a circumferential array relative to the center of the connecting pipe (201);
the sealing structure (6) comprises a third sealing ring (601), the third sealing ring (601) is arranged on the connecting pipe (201), and a second sealing groove (602) matched with the third sealing ring (601) is arranged on the connecting pipe (201).
2. A special threaded joint for a high temperature well oil casing according to claim 1, characterized in that: the fixing groove (404) is in an annular shape, and the screw rod (403) and the outer hexagonal wrench are matched for use.
3. A special threaded joint for a high temperature well oil casing according to claim 1, characterized in that: the connecting pipe (201) is provided with a plurality of mounting holes (603), and the plurality of mounting holes (603) are distributed in a circumferential array with respect to the center of the connecting pipe (201).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410206231.1A CN117780270B (en) | 2024-02-26 | 2024-02-26 | Special threaded joint of oil casing for high-temperature well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410206231.1A CN117780270B (en) | 2024-02-26 | 2024-02-26 | Special threaded joint of oil casing for high-temperature well |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117780270A true CN117780270A (en) | 2024-03-29 |
| CN117780270B CN117780270B (en) | 2024-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410206231.1A Active CN117780270B (en) | 2024-02-26 | 2024-02-26 | Special threaded joint of oil casing for high-temperature well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117780270B (en) |
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| CN212564858U (en) * | 2020-06-24 | 2021-02-19 | 无锡市祥通管阀有限公司 | Novel gland loose sleeve compensation joint |
| CN214197690U (en) * | 2020-12-07 | 2021-09-14 | 巩义市永盟给排水材料有限公司 | Gland type limiting expansion joint |
| CN217003502U (en) * | 2021-12-29 | 2022-07-19 | 河南科兴液压科技有限公司 | Hydraulic quick joint with good sealing effect |
| CN116733385A (en) * | 2023-02-07 | 2023-09-12 | 江苏泰富管材科技有限公司 | Oil casing threaded joint for high-pressure gas well |
| CN116658721A (en) * | 2023-05-25 | 2023-08-29 | 烟台誉隆机电科技有限公司 | Connection structure of flexible ventilation pipe and main ventilation pipeline |
| CN117248834A (en) * | 2023-11-01 | 2023-12-19 | 江苏宏泰石化机械有限公司 | Petroleum expansion casing joint |
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| CN117780270B (en) | 2024-05-31 |
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