CN109488223A - A kind of novel seal button oil annular tube structure - Google Patents
A kind of novel seal button oil annular tube structure Download PDFInfo
- Publication number
- CN109488223A CN109488223A CN201811577064.2A CN201811577064A CN109488223A CN 109488223 A CN109488223 A CN 109488223A CN 201811577064 A CN201811577064 A CN 201811577064A CN 109488223 A CN109488223 A CN 109488223A
- Authority
- CN
- China
- Prior art keywords
- tube body
- face
- box cupling
- casing
- seal
- Prior art date
- 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.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/08—Casing joints
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
Abstract
The present invention relates to a kind of novel seal button oil annular tube structures.Including tubing and casing tube body and oil casing collar；Tube body external screw thread is arranged in tubing and casing tube body one end, and body cylindrical sealing surface is arranged in the externally threaded front end of tube body, and body cylindrical sealing surface front end is arranged tube body conical surface seal face, setting tube end torque shoulder is held in face of tube body conical surface seal；Oil casing collar offers the connecting hole of fuel feeding casing pipe insertion, coupling inner thread, box cupling spherical seal surface, box cupling conical surface seal face and box cupling torque shoulder are disposed in connecting hole from the outside to the core, stepped hole is set in oil casing collar, and the corner of two stepped hole joints is arranged in box cupling torque shoulder.Tube body conical surface seal of the present invention face and the conical surface seal face of oil casing collar are interference fitted, and greatly enhance the leakproofness of tubing and casing；The torque shoulder in torque shoulder and oil casing collar end in tubing and casing tube end cooperates, and improves the incompressible of tubing and casing junction, reaction torque effect.
Description
Technical field
The invention belongs to oil exploitation drilling equipment technical fields, are related to the oil casing threaded interconnection technique of drilling equipment,
In particular to the novel metal of a kind of hook-type buttress thread seals special thread oil casing structure.
Background technique
As oil exploration technology is continuously improved, high temperature well, high-pressure well, deep-well are largely developed, down-hole string Service Environment
Constantly deteriorate, to the switching performance of oil casing collar, sealing performance and anti-galling performance, more stringent requirements are proposed for this.Oil at present
The box cupling that gas field scene uses can be divided into API threaded collar joint and special thread box cupling two major classes.API threaded collar joint passes through spiral shell
Interference fit and thread compound between line, which block, realizes envelope, and special thread box cupling is realized by independent sealing surface and torque shoulder
It is multi-stage sealed, therefore special thread box cupling ratio API box cupling bonding strength with higher and preferable gas tightness.It studies and real
The requirement for showing that the connection of common API threaded collar joint and sealing performance are no longer satisfied high temperature high pressure deep well is trampled, for pressure
The higher oil/gas well of power, it is proposed that select special thread box cupling.
Summary of the invention
The purpose of the present invention is being directed to technological deficiency existing in the prior art, API buttress thread is optimized, is increased
Add metal sealing, the Parametric geometric model of oil casing threaded box cupling sealing structure is constructed using 3 d modeling software, provides one
Kind novel metal seals special thread oil casing structure.
To achieve the purpose of the present invention, the technical scheme adopted by the invention is that: a kind of novel seal button oil annular tube structure,
Including tubing and casing tube body (1) and the oil casing collar (5) being connect with tubing and casing tube body (1)；
Tube body external screw thread (2) are arranged in described tubing and casing tube body (1) one end, and tube body is arranged in the front end of the tube body external screw thread (2)
Tube body conical surface seal face (3) are arranged in body cylindrical sealing surface (9) front end, in tube body conical surface seal in column sealed face (9)
Tube end torque shoulder (4) are arranged in the joint of face (3) front end and tubing and casing tube body (1) end face；
The oil casing collar (5) offers the connecting hole for the tubing and casing tube body (1) insertion, and the connecting hole is interior from export-oriented
Inside it is disposed with coupling inner thread (6), box cupling spherical seal surface (10), box cupling conical surface seal face (7) and box cupling torque shoulder
(8), stepped hole is set in the oil casing collar (5), and turning for two stepped hole joints is arranged in the box cupling torque shoulder (8)
At angle；
The tube body external screw thread (2) and coupling inner thread (6) are correspondingly arranged, and the body cylindrical sealing surface (9) and box cupling are spherical
Sealing surface (10) is correspondingly arranged, and tube body conical surface seal face (3) and box cupling conical surface seal face (7) are correspondingly arranged, the tube body
End torque shoulder (4) and box cupling torque shoulder (8) are correspondingly arranged.
Tube body conical surface seal face (3) and the box cupling conical surface seal face (7) of oil casing collar (5) take adopting conical surface interference to match
It closes, the angle [alpha] of the conical surface and horizontal plane is 28 °~33 °.
The box cupling spherical seal surface (10) of the body cylindrical sealing surface (9) and oil casing collar (5) takes spherical shape to circle
Column interference fit.
The tube end torque shoulder (4) and the box cupling torque shoulder (8) of oil casing collar (5) take circular bead surface interference to match
It closes, the angle beta tubing and casing tube body (1) of circular bead surface and vertical plane is 13 °~17 °, and oil casing collar (5) is 13 °~17 °.
The tube body external screw thread (2) and coupling inner thread (6) use novel partially trapezoidal tapered tread, pitch P setting oil
Casing pipe (1) is that 2-3/8~2-7/8 is 8 teeth/in, and tubing and casing tube body (1) is that 3-1/2~4-1/2 is 6 teeth/in, tubing and casing
Box cupling (5) is that 5~13-3/8 is 5 teeth/in, and thread crest is parallel to element of cone.
It is -3 ° that the carrying face angle L of the novel partially trapezoidal tapered tread, which is set in the clockwise direction angle of vertical plane,
~0 °, guiding face angle S is set between 10 °~13 °.
The primary sealing area that the box cupling conical surface seal face (7) of tube body conical surface seal face (3) and oil casing collar (5) is formed
Diameter tolerance ± 0.05mm, primary sealing area length >=0.5mm, primary sealing area magnitude of interference 0.3mm.
The body cylindrical sealing surface (9) takes spherical shape to match cylinder interference with oil casing collar spherical seal surface (10)
It closes, magnitude of interference 0.10mm.
Pitch diameter of thread magnitude of interference 0.1mm, pitch diameter of thread measurement point to shoulder apart from tube body and box cupling range difference≤
0.05mm。
The invention has the advantages that as internal screw thread and external screw thread engage, the cone in tube body conical surface seal face and oil casing collar
Face sealing surface interference fit, greatly enhances the leakproofness of tubing and casing, improves sealing effect；Torque platform in tubing and casing tube end
Torque shoulder on shoulder and oil casing collar end cooperates, and can play the role of torque resistant well when external force applies torque, improves
The incompressible of tubing and casing junction, reaction torque effect, enhance concatenation ability.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
Fig. 2 is the structural schematic diagram of tube body male end of the present invention.
Fig. 3 is the structural schematic diagram of tube body female end of the present invention.
Fig. 4 is the enlarged diagram of helicitic texture of the present invention.
In figure, 1- tubing and casing tube body, 2- tube body external screw thread, 3- tube body conical surface seal face, 4- tube end torque shoulder, 5- oil
Casing coupling, 6- coupling inner thread, 7- box cupling conical surface seal face, 8- box cupling torque shoulder, 9- body cylindrical sealing surface, 10- connect
Spherical seal surface, α-primary sealing area conical surface angle with horizontal plane, β-circular bead surface and vertical plane angle are bound round, L- carries face angle, and S- is led
To face angle, P- screw pitch.
Specific embodiment
Further explanation is made to the present invention below, more preferably to understand the present invention:
A kind of novel metal sealing special buckle vitta structure, including tubing and casing tube body 1 and oil casing collar 5, tubing and casing tube body 1 one
End is tube body female end, and the other end is tube body male end and is successively arranged tube body external screw thread 2, body cylindrical sealing surface 9, pipe
Body cone sealing surface 3, tube end torque shoulder 4；5 one end of oil casing collar is box cupling male end, and the other end is spiral shell in box cupling
Line end is simultaneously successively arranged coupling inner thread 6, box cupling spherical seal surface 10, box cupling conical surface seal face 7, box cupling torque shoulder 8, with
Internal screw thread and external screw thread engagement, body cylindrical sealing surface 9 and box cupling spherical seal surface 10 cooperate, tube body conical surface seal face 3 and oil
The box cupling conical surface seal face 7 of casing coupling 5 cooperates；Tube end torque shoulder 4 and oil casing collar 5 on 1 end of tubing and casing tube body
Box cupling torque shoulder 8 on end cooperates.
Wherein, tube body conical surface seal face 3 and the box cupling conical surface seal face 7 of oil casing collar 5 take adopting conical surface interference to match
It closes, the angle [alpha] of the conical surface and horizontal plane is 28 °~33 °.
Wherein, the box cupling spherical seal surface 10 of the body cylindrical sealing surface 9 and oil casing collar 5 takes spherical shape to cylinder
Interference fit.
Wherein, the tube end torque shoulder 4 and the box cupling torque shoulder 8 of oil casing collar 5 take circular bead surface interference to match
It closes, the angle beta of circular bead surface and vertical plane is 13 °~17 ° of HDT1 oil pipe, 13 °~17 ° of HDC1 casing.
Wherein, the tube body external screw thread 2 and coupling inner thread 6 use novel partially trapezoidal tapered tread, pitch P setting
HDT2 oil pipe 2-3/8~2-7/8 is 8 teeth/in, and HDT2 oil pipe 3-1/2~4-1/2 is 6 teeth/in, and 5~13-3/8 of HDC2 casing is
5 teeth/in, thread crest are parallel to element of cone.
Wherein, the carrying face angle L of the novel partially trapezoidal tapered tread is set in the clockwise direction angle with vertical plane
It is -3 °~0 °, guiding face angle S is set between 10 °~13 °.
Oil casing threaded box cupling sealing structure includes main seal structure, auxiliary sealing structure and thread seal, primary seal knot
Structure is made of metal/metal radial seal structure, and auxiliary sealing structure is torque shoulder, and thread seal is that buttress thread is radial
Interference seal, structural parameters include primary sealing area diameter, primary sealing area length, primary sealing area taper, primary sealing area magnitude of interference, platform
Shoulder face angle degree, circular bead surface length, circular bead surface magnitude of interference, sealing structure position and arc radius, pitch diameter of thread magnitude of interference, in screw thread
Diameter measurement point to shoulder distance.
Wherein, primary sealing area diameter tolerance ± 0.05mm, primary sealing area length >=0.5mm, tube body and box cupling primary sealing area
Magnitude of interference 0.3mm.
Wherein, secondary primary seal body diameter tolerance+0.05mm, spherical shape is to cylinder magnitude of interference 0.10mm.
Wherein, pitch diameter of thread magnitude of interference 0.1mm, pitch diameter of thread measurement point to shoulder apart from tube body and box cupling range difference≤
0.05mm。
It should be noted that " connection " described herein and the word for expressing " connection ", as " being connected ",
" connected " etc. had both included that a certain component is directly connected to another component, and had also included that a certain component passes through other component and another portion
Part is connected.
Claims (9)
1. a kind of novel seal button oil annular tube structure, which is characterized in that including tubing and casing tube body (1) and with tubing and casing tube body (1)
The oil casing collar (5) of connection；
Tube body external screw thread (2) are arranged in described tubing and casing tube body (1) one end, and tube body is arranged in the front end of the tube body external screw thread (2)
Tube body conical surface seal face (3) are arranged in body cylindrical sealing surface (9) front end, in tube body conical surface seal in column sealed face (9)
Tube end torque shoulder (4) are arranged in the joint of face (3) front end and tubing and casing tube body (1) end face；
The oil casing collar (5) offers the connecting hole for the tubing and casing tube body (1) insertion, and the connecting hole is interior from export-oriented
Inside it is disposed with coupling inner thread (6), box cupling spherical seal surface (10), box cupling conical surface seal face (7) and box cupling torque shoulder
(8), stepped hole is set in the oil casing collar (5), and turning for two stepped hole joints is arranged in the box cupling torque shoulder (8)
At angle；
The tube body external screw thread (2) and coupling inner thread (6) are correspondingly arranged, and the body cylindrical sealing surface (9) and box cupling are spherical
Sealing surface (10) is correspondingly arranged, and tube body conical surface seal face (3) and box cupling conical surface seal face (7) are correspondingly arranged, the tube body
End torque shoulder (4) and box cupling torque shoulder (8) are correspondingly arranged.
2. a kind of novel seal button oil annular tube structure according to claim 1, which is characterized in that the tube body conical surface seal
Face (3) and the box cupling conical surface seal face (7) of oil casing collar (5) take adopting conical surface interference to cooperate, the angle [alpha] of the conical surface and horizontal plane
It is 28 °~33 °.
3. a kind of novel seal button oil annular tube structure according to claim 1, which is characterized in that the body cylindrical sealing
The box cupling spherical seal surface (10) of face (9) and oil casing collar (5) is taken spherical to cylinder interference fit.
4. a kind of novel seal button oil annular tube structure according to claim 1, which is characterized in that the tube end torque platform
Shoulder (4) and the box cupling torque shoulder (8) of oil casing collar (5) take circular bead surface to be interference fitted, the angle of circular bead surface and vertical plane
Spending β tubing and casing tube body (1) is 13 °~17 °, and oil casing collar (5) is 13 °~17 °.
5. a kind of novel seal button oil annular tube structure according to claim 1, which is characterized in that the tube body external screw thread
(2) and coupling inner thread (6) uses novel partially trapezoidal tapered tread, and pitch P sets tubing and casing tube body (1) as 2-3/8~2-
7/8 is 8 teeth/in, and tubing and casing tube body (1) is that 3-1/2~4-1/2 is 6 teeth/in, and oil casing collar (5) is that 5~13-3/8 is 5
Tooth/in, thread crest are parallel to element of cone.
6. a kind of novel seal button oil annular tube structure according to claim 2, which is characterized in that the novel partially trapezoidal circle
The carrying face angle L of taper thread be set in the clockwise direction angle of vertical plane be -3 °~0 °, guiding face angle S be set in 10 °~
Between 13 °.
7. a kind of novel seal button oil annular tube structure according to claim 2, which is characterized in that the tube body conical surface seal
Primary sealing area diameter tolerance ± the 0.05mm that the box cupling conical surface seal face (7) of face (3) and oil casing collar (5) is formed, primary seal
Face length >=0.5mm, primary sealing area magnitude of interference 0.3mm.
8. a kind of novel seal button oil annular tube structure according to claim 3, which is characterized in that the body cylindrical sealing
Face (9) and oil casing collar spherical seal surface (10) are taken spherical to cylinder interference fit, magnitude of interference 0.10mm.
9. a kind of novel seal button oil annular tube structure according to claim 6, which is characterized in that pitch diameter of thread magnitude of interference
0.1mm, pitch diameter of thread measurement point to shoulder apart from tube body and box cupling range difference≤0.05mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811577064.2A CN109488223B (en) | 2018-12-23 | 2018-12-23 | Novel sealing oil-buckling sleeve structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811577064.2A CN109488223B (en) | 2018-12-23 | 2018-12-23 | Novel sealing oil-buckling sleeve structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109488223A true CN109488223A (en) | 2019-03-19 |
| CN109488223B CN109488223B (en) | 2024-05-28 |
Family
ID=65711391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811577064.2A Active CN109488223B (en) | 2018-12-23 | 2018-12-23 | Novel sealing oil-buckling sleeve structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109488223B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203463035U (en) * | 2013-07-05 | 2014-03-05 | 宝鸡石油钢管有限责任公司 | Screwed joint for petroleum casing pipe |
| CN204139992U (en) * | 2014-07-16 | 2015-02-04 | 胜利油田孚瑞特石油装备有限公司 | Gas-tight oil casing threaded connection structure for high-temperature and high-pressure gas well |
| CN106869820A (en) * | 2015-12-10 | 2017-06-20 | 盘锦辽河油田金环实业有限责任公司 | A kind of new hermetic seal special buckle oil pipe |
| CN109505530A (en) * | 2018-12-23 | 2019-03-22 | 扬州龙川钢管有限公司 | A kind of tubing and casing Hermetical connecting structure |
| CN209369742U (en) * | 2018-12-23 | 2019-09-10 | 扬州龙川钢管有限公司 | A kind of tubing and casing Hermetical connecting structure |
| CN209855720U (en) * | 2018-12-23 | 2019-12-27 | 扬州龙川钢管有限公司 | Novel sealed oil casing structure that detains |
-
2018
- 2018-12-23 CN CN201811577064.2A patent/CN109488223B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203463035U (en) * | 2013-07-05 | 2014-03-05 | 宝鸡石油钢管有限责任公司 | Screwed joint for petroleum casing pipe |
| CN204139992U (en) * | 2014-07-16 | 2015-02-04 | 胜利油田孚瑞特石油装备有限公司 | Gas-tight oil casing threaded connection structure for high-temperature and high-pressure gas well |
| CN106869820A (en) * | 2015-12-10 | 2017-06-20 | 盘锦辽河油田金环实业有限责任公司 | A kind of new hermetic seal special buckle oil pipe |
| CN109505530A (en) * | 2018-12-23 | 2019-03-22 | 扬州龙川钢管有限公司 | A kind of tubing and casing Hermetical connecting structure |
| CN209369742U (en) * | 2018-12-23 | 2019-09-10 | 扬州龙川钢管有限公司 | A kind of tubing and casing Hermetical connecting structure |
| CN209855720U (en) * | 2018-12-23 | 2019-12-27 | 扬州龙川钢管有限公司 | Novel sealed oil casing structure that detains |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109488223B (en) | 2024-05-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202380987U (en) | Internal-external thread connector of thin-wall expansion pipe | |
| CN104453738A (en) | Airtight seal sleeve joint | |
| UA94640C2 (en) | Tightened threaded joint of oil-field tubes | |
| CN102678065A (en) | High-airtightness special buttress thread pipe joint | |
| CN107605412A (en) | Hammer formula surface conductor pipe nipple | |
| CN209369742U (en) | A kind of tubing and casing Hermetical connecting structure | |
| CN201874485U (en) | Metal sealed casing threaded connecting structure based on API (American Petroleum Institute) standard round threads | |
| CN202125258U (en) | Oil sleeve connector with high sealing performance and thread-gluing resistance | |
| CN101899953A (en) | Thread joint structure for high-performance oil casing | |
| CN207647476U (en) | Double-sealing face Special threading connector | |
| CN109505530A (en) | A kind of tubing and casing Hermetical connecting structure | |
| CN109488223A (en) | A kind of novel seal button oil annular tube structure | |
| CN207278200U (en) | Air-tight seal screw joint | |
| CN202081837U (en) | Stress-resistant threaded connector with corrosive gas sealing sleeve | |
| CN211500559U (en) | Thread gluing resistant air-tight seal threaded connector | |
| CN201778676U (en) | Low pressure-resistant air-tight seal sleeve joint | |
| CN209855720U (en) | Novel sealed oil casing structure that detains | |
| CN102352727A (en) | 8TPI oil or casing pipe threaded connector | |
| CN206329284U (en) | A kind of dual hermetic seal special buckle oil pipe of metallic elastic | |
| CN217518609U (en) | Oil casing threaded joint | |
| CN202788653U (en) | Hermetic seal thread connection device used for SEW oil casings | |
| CN205938255U (en) | Take threaded connection structure of coating steel pipe with anti - corrosion feature | |
| CN102587845A (en) | Air-sealing casing screwed connector interchangeable with API (American petroleum institute) round thread | |
| CN203188922U (en) | Hermetic seal buckle profile | |
| CN202140036U (en) | Threaded oil/sleeve pipe connector for air-tight sealing structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20240428 Address after: 225200 Xinggang Road, Economic Development Zone, Jiangdu District, Yangzhou City, Jiangsu Province Applicant after: Yangzhou Longchuan Energy Equipment Co.,Ltd. Country or region after: China Address before: 225200 Xinggang Road, Daqiao Town, Jiangdu District, Yangzhou City, Jiangsu Province Applicant before: YANGZHOU LONTRIN STEEL TUBE Co.,Ltd. Country or region before: China |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |