CN112145828B - Oil pipe joint for oil field - Google Patents
Oil pipe joint for oil field Download PDFInfo
- Publication number
- CN112145828B CN112145828B CN202010938897.8A CN202010938897A CN112145828B CN 112145828 B CN112145828 B CN 112145828B CN 202010938897 A CN202010938897 A CN 202010938897A CN 112145828 B CN112145828 B CN 112145828B
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- China
- Prior art keywords
- oil pipe
- ring
- oil
- flange
- truncated cone
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000001125 extrusion Methods 0.000 claims abstract description 50
- 238000007789 sealing Methods 0.000 claims abstract description 31
- 239000003921 oil Substances 0.000 description 108
- 239000010779 crude oil Substances 0.000 description 6
- 210000002421 cell wall Anatomy 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
- F16L15/04—Screw-threaded joints; Forms of screw-threads for such joints with additional sealings
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Joints Allowing Movement (AREA)
Abstract
The invention relates to the technical field of oil exploitation facilities, and discloses an oil pipe joint for an oil field, which comprises a first oil pipe and a second oil pipe, wherein the inner part of one end of the first oil pipe and the inner part of one end of the second oil pipe are respectively in threaded connection with two ends of an oil pipe connector, inner rings at two ends of the oil pipe connector are respectively and fixedly connected with a round pipe, the other end of the outer part of the round pipe is fixedly sleeved with a flange, an outer ring of the flange is fixedly sleeved with a sealing ring, and outer rings at two ends of the oil pipe connector are respectively and fixedly connected with extrusion rings. According to the oil pipe joint, the circular tube, the flange and the extrusion ring are additionally arranged at two ends of the oil pipe connector to form the cavity, the air bag is placed in the cavity, the extrusion ring is extruded by the inner wall of the circular truncated cone-shaped hole during connection, the air bag is extruded by the extrusion ring, so that the air bag seals gaps at the connection positions of the first oil pipe and the second oil pipe and the oil pipe connector, meanwhile, the sealing ring is tightly contacted with the small end of the circular truncated cone-shaped hole, the sealing performance of the oil pipe joint is improved, and the sealing performance of the oil pipe joint for the oil field is improved.
Description
Technical Field
The invention relates to the technical field of oil exploitation facilities, in particular to an oil pipe joint for an oil field.
Background
The oil field refers to a specific area for producing crude oil, sometimes referred to as a general term for an oil layer accumulated in the underground of a specific area, the crude oil in the oil field needs to be extracted through corresponding equipment, and an oil pipe is needed to convey the crude oil underground to the ground in the process of extracting the crude oil, specifically, the oil pipe is a pipeline for conveying the crude oil from a hydrocarbon reservoir to the surface after drilling is completed and is used for bearing the pressure generated in the extraction process.
The oil pipe for oilfield exploitation has certain specification in length, is generally connected on site and then used for crude oil transportation, the oil pipe connector is used for connection between oil pipes, the existing oil pipe connector and the oil pipe are connected through threads, and the threaded connection has certain defects in tightness.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the oil pipe joint for the oil field, which has the advantages of strong sealing performance and stable connection and solves the problems in the prior art.
The invention provides the following technical scheme: the utility model provides an oil pipe joint for oil field, includes first oil pipe and second oil pipe, the inside of first oil pipe one end and the inside of second oil pipe one end respectively with the both ends threaded connection of oil pipe connector, the inner ring at oil pipe connector both ends is fixedly connected with pipe respectively, the fixed flange that has cup jointed of the outside other end of pipe, the fixed sealing washer that has cup jointed of outer loop of flange, the outer loop at oil pipe connector both ends is fixedly connected with extrusion ring respectively, the gasbag has been placed in the cavity that oil pipe connector, pipe, flange and extrusion ring formed, the bellied both sides difference fixed mounting in oil pipe connector middle part has the ring.
Preferably, round platform form hole has all been seted up to the inside of the relative one end of first oil pipe and second oil pipe, annular groove has all been seted up to the tip of first oil pipe inner wall and the tip of second oil pipe inner wall, and the annular groove is less than the radius value of ring near the value of the height of the one end cell wall of oil pipe connector, annular groove and ring joint.
Preferably, the inner diameter of the round pipe is equal to the inner diameter of the oil pipe connector and the inner diameters of the first oil pipe and the second oil pipe, and the length value of the round pipe is equal to the height value of the round table-shaped hole.
Preferably, the outer diameter value of the flange is equal to the inner diameter value of one end with a small circular truncated cone-shaped hole, a gap for accommodating the air bag to pass through is formed between the outer ring of the flange and one end of the extrusion ring, and an annular clamping groove is formed in the outer ring of the flange.
Preferably, the sealing washer is in close contact with the small end of round platform form hole, sealing washer and ring groove joint, and the diameter value in sealing washer cross-section is greater than ring groove open-ended width value.
Preferably, the extrusion ring is in a circular truncated cone shape, the inclined surface of the extrusion ring protrudes outwards, an annular groove with a triangular cross section is formed in the outer surface of the extrusion ring, and the connecting line of the two ends of the extrusion ring is parallel to the inclined surface of the circular truncated cone-shaped hole.
Preferably, the volume of the air bag is equal to the volume of a cavity formed by the oil pipe connector, the circular pipe, the flange and the extrusion ring before extrusion.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the oil pipe joint, the circular tube, the flange and the extrusion ring are additionally arranged at two ends of the oil pipe connector to form the cavity, the air bag is placed in the cavity, the extrusion ring is extruded by the inner wall of the circular truncated cone-shaped hole during connection, the air bag is extruded by the extrusion ring, so that the air bag seals gaps at the connection positions of the first oil pipe and the second oil pipe and the oil pipe connector, meanwhile, the sealing ring is tightly contacted with the small end of the circular truncated cone-shaped hole, the sealing performance of the oil pipe joint is improved, and the sealing performance of the oil pipe joint for the oil field is improved.
2. According to the oil pipe joint, the extrusion ring is extruded by using the inner walls of the circular truncated cone-shaped holes in the first oil pipe and the second oil pipe after connection, the extrusion ring pushes the oil pipe connector, so that the threaded connection between the oil pipe connector and the first oil pipe and the second oil pipe is enhanced, the sealing performance of the oil pipe joint is further improved, meanwhile, the oil pipe connector is more stably connected with the first oil pipe and the second oil pipe by using the circular ring and the annular groove in a matched mode, and meanwhile, the sealing effect can be achieved, so that the sealing performance and the practicability of the oil pipe joint for the oil field are improved.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is a partially enlarged view of the extrusion ring of the present invention;
FIG. 3 is an enlarged view of the structure at A of FIG. 1 according to the present invention;
FIG. 4 is an enlarged view of the structure at B of FIG. 1 according to the present invention.
In the figure: 1. a first oil pipe; 2. a second oil pipe; 3. an oil pipe connector; 4. a circular tube; 5. a flange; 6. a seal ring; 7. an extrusion ring; 8. an air bag; 9. a circular ring.
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.
Referring to fig. 1-4, an oil pipe joint for an oil field comprises a first oil pipe 1 and a second oil pipe 2, wherein the inside of one end of the first oil pipe 1 and the inside of one end of the second oil pipe 2 are respectively in threaded connection with two ends of an oil pipe connector 3, the inner rings of two ends of the oil pipe connector 3 are respectively and fixedly connected with a round pipe 4, the other end of the outside of the round pipe 4 is fixedly sleeved with a flange 5, the outer ring of the flange 5 is fixedly sleeved with a sealing ring 6, the outer rings of two ends of the oil pipe connector 3 are respectively and fixedly connected with extrusion rings 7, an air bag 8 is placed in a cavity formed by the oil pipe connector 3, the round pipe 4, the flange 5 and the extrusion rings 7, and round rings 9 are respectively and fixedly installed on two sides of a middle protrusion of the oil pipe connector 3.
Wherein, as shown in fig. 1 and fig. 3, round platform form hole has all been seted up to the inside of the relative one end of first oil pipe 1 and second oil pipe 2, round platform form hole is convenient for place the inside of first oil pipe 1 and second oil pipe 2 with extrusion ring 7 isotructure, annular groove has all been seted up to the tip of first oil pipe 1 inner wall and the tip of second oil pipe 2 inner wall, and the value of height that annular groove is close to the one end cell wall of oil pipe connector 3 is less than the radius value of ring 9, be convenient for block ring 9 into annular groove, annular groove and ring 9 joint, utilize the cooperation between ring 9 and the annular groove to use, make the connection between oil pipe connector 3 and first oil pipe 1 and the second oil pipe 2 more firm, can play sealed effect simultaneously, thereby the leakproofness and the practicality of this oil pipe connector for the oil field have been improved.
As shown in fig. 1, the inner diameter of the circular tube 4 is equal to the inner diameter of the oil tube connector 3 and the inner diameters of the first oil tube 1 and the second oil tube 2, and the length of the circular tube 4 is equal to the height of the circular truncated cone-shaped hole, so that the circular tube 4 can completely enter the circular truncated cone-shaped hole, and the inner wall of the circular truncated cone-shaped hole can completely extrude the extrusion ring 7, so that the air bag 8 is subjected to the maximum extrusion force to maximize the extension amount, and tight sealing is achieved.
As shown in fig. 1 and 4, the outer diameter value of the flange 5 is equal to the inner diameter value of the small end of the circular truncated cone-shaped hole, so that the flange 5 can completely support the sealing ring 6, the sealing ring 6 is in close contact with the inner wall of the circular truncated cone-shaped hole, a gap for accommodating the air bag 8 to pass through is formed between the outer ring of the flange 5 and one end of the extrusion ring 7, the air bag 8 conveniently extends out of a cavity formed by the oil pipe connector 3, the circular pipe 4, the flange 5 and the extrusion ring 7 to play a sealing role, and the outer ring of the flange 5 is provided with an annular clamping groove.
Wherein, as shown in fig. 1 and fig. 4, sealing washer 6 and the little one end in round platform form hole in close contact with, guaranteed to screw up between first oil pipe 1 and second oil pipe 2 and oil pipe connector 3 after, further improve its leakproofness, sealing washer 6 and ring groove joint, and the diameter value of sealing washer 6 cross-section is greater than ring groove open-ended width value, has avoided sealing washer 6 to drop from ring groove and has influenced its leakproofness.
As shown in fig. 1 and 2, the extrusion ring 7 is in a circular truncated cone shape, the inclined surface of the extrusion ring 7 protrudes outward, the outer surface of the extrusion ring 7 is provided with an annular groove with a triangular cross section, so that the outward protruding inclined surface of the extrusion ring 7 can be extruded and deformed inward, the extrusion ring 7 after extrusion deformation can further extrude the airbag 8 conveniently, the connecting line of the two ends of the extrusion ring 7 is parallel to the inclined surface of the circular truncated cone-shaped hole, and a certain deformation space is ensured to exist after the extrusion ring 7 receives extrusion force.
As shown in figure 1, the volume of the air bag 8 is equal to the volume of a chamber formed by the oil pipe connector 3, the circular pipe 4, the flange 5 and the non-extruded extrusion ring 7, so that the extrusion ring 7 extrudes the air bag 8 after being extruded, and the air bag 8 can extend out of the chamber to play a sealing role.
The working principle is as follows: when the oil pipe connector is used, the first oil pipe 1 and the second oil pipe 2 correspond to two ends of an upper oil pipe connector 3 respectively, then the first oil pipe 1 and the second oil pipe 2 are rotated to be in threaded connection with the oil pipe connector 3 respectively, in the process of rotating the first oil pipe 1 and the second oil pipe 2, the inclined surfaces of the circular truncated cone-shaped holes in the inner cavities of the first oil pipe 1 and the second oil pipe 2 extrude the extrusion ring 7, so that the extrusion ring 7 extrudes the air bag 8, a part of the air bag 8 extends out of a gap between the extrusion ring 7 and the flange 5 to be in contact with the inclined surfaces, along with the increase of the feeding amount of the first oil pipe 1 and the second oil pipe 2 and the oil pipe connector 3, the pressure of the extrusion ring 7 extruding the air bag 8 is increased, the sealing performance between the air bag 8 and the circular truncated cone-shaped hole inclined surfaces is enhanced, meanwhile, the sealing ring 6 starts to be in contact with and sealed with the circular truncated cone-shaped hole inclined surfaces, and finally the annular grooves on the first oil pipe 1 and the second oil pipe 2 clamp the circular rings 9 respectively, and (4) finishing.
Claims (1)
1. The utility model provides an oil field is with oil pipe joint, includes first oil pipe (1) and second oil pipe (2), its characterized in that: the inner part of one end of the first oil pipe (1) and the inner part of one end of the second oil pipe (2) are respectively in threaded connection with two ends of the oil pipe connector (3), inner rings at two ends of the oil pipe connector (3) are respectively and fixedly connected with a round pipe (4), the other end of the outer part of the round pipe (4) is fixedly sleeved with a flange (5), an outer ring of the flange (5) is fixedly sleeved with a sealing ring (6), outer rings at two ends of the oil pipe connector (3) are respectively and fixedly connected with an extrusion ring (7), an air bag (8) is placed in a cavity formed by the oil pipe connector (3), the round pipe (4), the flange (5) and the extrusion ring (7), and two sides of a middle bulge of the oil pipe connector (3) are respectively and fixedly provided with a round ring (9);
the inner parts of the opposite ends of the first oil pipe (1) and the second oil pipe (2) are respectively provided with a circular truncated cone-shaped hole, the end part of the inner wall of the first oil pipe (1) and the end part of the inner wall of the second oil pipe (2) are respectively provided with an annular groove, the height value of the groove wall of one end, close to the oil pipe connector (3), of the annular groove is smaller than the radius value of the circular ring (9), and the annular groove is clamped with the circular ring (9);
the inner diameter of the circular tube (4) is equal to that of the oil tube connector (3) and that of the first oil tube (1) and that of the second oil tube (2), and the length of the circular tube (4) is equal to the height of the circular truncated cone-shaped hole;
the outer diameter value of the flange (5) is equal to the inner diameter value of one end with a small circular truncated cone-shaped hole, a gap for accommodating an air bag (8) to pass through is formed between the outer ring of the flange (5) and one end of the extrusion ring (7), and an annular clamping groove is formed in the outer ring of the flange (5);
the sealing ring (6) is tightly contacted with one end of the circular truncated cone-shaped hole, the sealing ring (6) is clamped with the annular clamping groove, and the diameter value of the section of the sealing ring (6) is larger than the width value of the opening of the annular clamping groove;
the extrusion ring (7) is in a circular truncated cone shape, the inclined surface of the extrusion ring (7) protrudes outwards, an annular groove with a triangular section is formed in the outer surface of the extrusion ring (7), and the connecting line of the two ends of the extrusion ring (7) is parallel to the inclined surface of the circular truncated cone-shaped hole;
the volume of the air bag (8) is equal to the volume of a cavity formed by the oil pipe connector (3), the circular pipe (4), the flange (5) and the non-extruded front extrusion ring (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010938897.8A CN112145828B (en) | 2020-09-09 | 2020-09-09 | Oil pipe joint for oil field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010938897.8A CN112145828B (en) | 2020-09-09 | 2020-09-09 | Oil pipe joint for oil field |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112145828A CN112145828A (en) | 2020-12-29 |
| CN112145828B true CN112145828B (en) | 2021-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010938897.8A Active CN112145828B (en) | 2020-09-09 | 2020-09-09 | Oil pipe joint for oil field |
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| CN (1) | CN112145828B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112855975B (en) * | 2021-01-15 | 2021-11-19 | 天津市中核科技实业有限公司 | Ball valve |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0172956A1 (en) * | 1984-08-29 | 1986-03-05 | Air-Way Manufacturing Co. | A connector assembly |
| DE10216280A1 (en) * | 2002-04-12 | 2003-10-30 | Siemens Ag | Sealing device for high-pressure sealing of line transitions |
| CN201373108Y (en) * | 2009-03-19 | 2009-12-30 | 李少华 | Inflatable sealing member |
| KR200453018Y1 (en) * | 2009-10-15 | 2011-04-01 | 한국동서발전(주) | Protecting tube for preventing leakage of fluid |
| CN205300229U (en) * | 2015-12-18 | 2016-06-08 | 内蒙古索能硅材料科技有限公司 | Sealing device |
| CN206770824U (en) * | 2017-05-18 | 2017-12-19 | 温州新星设备安装有限公司 | A kind of pipe connecting structure |
| CN207034444U (en) * | 2017-06-21 | 2018-02-23 | 辽宁美托科技股份有限公司 | Compound seal flared fitting |
| CN207229762U (en) * | 2017-10-10 | 2018-04-13 | 丁毅 | Whirl compensator |
| CN208442419U (en) * | 2018-06-12 | 2019-01-29 | 海盐六里液压管件有限公司 | A kind of ferrule-type compression joint |
| CN209762479U (en) * | 2018-12-22 | 2019-12-10 | 浙江钧通塑胶科技有限公司 | Stop valve |
| CN209262444U (en) * | 2018-12-25 | 2019-08-16 | 泰州市恒立管业制造有限公司 | A kind of air-conditioning copper tube connector preventing leakage |
| CN209671613U (en) * | 2019-04-16 | 2019-11-22 | 吉林大学 | Dynamic compensation type seal circle |
| CN210423706U (en) * | 2019-07-08 | 2020-04-28 | 山推工程机械股份有限公司 | Sealing strip |
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2020
- 2020-09-09 CN CN202010938897.8A patent/CN112145828B/en active Active
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| CN112145828A (en) | 2020-12-29 |
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