CN2747352Y - Integral coupled petroleum sleeve joint with metal interference - Google Patents
Integral coupled petroleum sleeve joint with metal interference Download PDFInfo
- Publication number
- CN2747352Y CN2747352Y CN 200420107543 CN200420107543U CN2747352Y CN 2747352 Y CN2747352 Y CN 2747352Y CN 200420107543 CN200420107543 CN 200420107543 CN 200420107543 U CN200420107543 U CN 200420107543U CN 2747352 Y CN2747352 Y CN 2747352Y
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- CN
- China
- Prior art keywords
- metal interference
- sleeve
- thread
- sleeve joint
- screw thread
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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.)
- Expired - Fee Related
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- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
Abstract
The utility model relates to a sleeve joint for oil well pipe, in particular to an integral coupled petroleum sleeve joint. The integral coupled petroleum sleeve joint with metal interference is composed of an outer screw thread on one end and an inner screw thread on the other end. The screw threads are taper thread, the inner screw thread end and the outer screw thread end of the sleeve are provided with shoulders, and the connection part of the sleeve comprises a torque shoulder and a taper thread. The utility model is characterized in that the connection part of the sleeve comprises the metal interference sealing at the end of the sleeve which is composed of a cylinder and a circular conical surface, and a transition section is arranged between the cylinder and the circular conical surface. The utility model adds a metal interference sealing structure and the single torque shoulder is increased to the double torque shoulders, which improves the sealing property of the non-coupling coupled sleeve joint and meets the service requirements of oil wells and gas wells.
Description
(1) technical field
The utility model relates to the oil well pipe casing joint, relates in particular to the whole petroleum sleeve joint that connects.
(2) background technology
The exploitation of petroleum gas resource realizes by setting up the oil gas well.The borehole wall of oil gas well is a kind of steel pipe that is called petroleum casing pipe, be formed by connecting its two ends screw thread by root casing string.In order to ensure this casing string energy operate as normal, casing string is finished connection (being called " setting of casing ") in well after, need between casing string external diameter and well, in the above certain height in shaft bottom, inject cement, sleeve pipe is fixed (being called " well cementation ").When well cementation, a key factor that influences its quality is that enough well cementation annular spaces will be arranged, i.e. semidiameter between well internal diameter and casing string external diameter.For casing string, its maximum outside diameter is in its connecting portion; Therefore, under the controlled condition of well internal diameter, reduce the external diameter of casing joint, just can improve the well cementation annular space, and then obtain the effect that improves the casing string cementing quality.For casing joint, its form of structure divides box cupling to connect and whole connection the (claim again: direct linkage type, no box cupling connect), and the former external diameter is big, latter's external diameter relatively can be little.
Existing whole splicing sleeve has the direct linkage type sleeve pipe of API standard, and does not have the box cupling splicing sleeve.The direct linkage type sleeve pipe internal thread section start of API standard has an imperfect tooth section, its profile of tooth is: from apart from torque shoulder face a distance (establish its for L), tangent with the face of cylinder and a tapered tread identical with diameter at the bottom of this place's thread, fillet at the bottom of staying the tooth top part of tapered tread and keeping the tooth of tapered tread, be exactly the thread tooth of its imperfect tooth, referring to Fig. 1.According to this regulation, the profile of tooth of imperfect tooth fits like a glove with the complete tooth of screw thread at the L place (the two slick and sly linking to each other) and increases gradually from the width of L place gullet base, until reach maximum in the end; The tooth top bus of wherein imperfect tooth section is all located on the taper seat identical with complete tooth section, on the tooth root bus Jun Chu face of cylinder, the thread taper of complete tooth section is 1: 8.At the small end of joint one tapering being arranged is 1: 6 metal interference sealing surface (external screw thread is the conical surface+arc surface).The imperfect profile of tooth of the internal thread of this sleeve pipe is difficult to processing, and the sealing performance of conical surface seal is subject to the influence of tensile load.Though existing no box cupling splicing sleeve has been cancelled as above imperfect tooth, because of not establishing metal interference sealing, so the sealing performance of joint is restricted.
(3) summary of the invention
The purpose of this utility model is to provide a kind of integral body with metal interference sealing to connect petroleum sleeve joint, and it has increased metal interference sealing, and the sealing performance of no box cupling splicing sleeve joint is improved, and adapts to the service demand of oil well and gas well.
The utility model is achieved in that a kind of integral body with metal interference sealing connects petroleum sleeve joint, form by containing one of male end and female end other end, screw thread is a taper thread, there is shoulder at the two ends of internal and external screw thread pipe end, the connecting portion of sleeve pipe comprises torque shoulder and taper thread, the connecting portion that it is characterized in that sleeve pipe also comprises the metal interference sealing of pipe end place, and metal interference sealing in pipe end place is made up of the face of cylinder and taper seat, and a changeover portion is arranged between the face of cylinder and taper seat.
The integral body of above-mentioned band metal interference sealing connects petroleum sleeve joint, and metal interference sealing in described pipe end place is in the end of externally threaded top and internal thread.
The integral body of above-mentioned band metal interference sealing connects petroleum sleeve joint, and the tapering of described tapered tread is 1: 16, pitch 5～8 button/inches, and profile of tooth is the buttress thread of 3 ° of tensile side half-angles and 10 ° of compressed side half-angles.
The utility model is the top at the screw thread that contains the male end joint, it also is the end that contains the screw thread of female end joint, it is the connecting portion of sleeve pipe, increased metal interference sealing, the hermetically-sealed construction by the face of cylinder, changeover portion and taper seat combination by pipe end is realized metal interference sealing, kept original outside on the basis of torque shoulder and taper thread sealing, increased the internal torque shoulder, the whole sealing performance that connects petroleum sleeve joint is greatly improved, can be used for the casing joint of oil well and gas well.
(4) description of drawings
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Fig. 1 is the direct linkage type sleeve structure schematic diagram of existing API standard;
Fig. 2 is that the integral body of the utility model band metal interference sealing connects the petroleum sleeve joint structural representation;
Fig. 3 is the local enlarged diagram of I portion among Fig. 2.
Among the figure: 1 outer shoulder, 3 faces of cylinder, 4 changeover portions, 5 taper seats, 6 interior shoulders, 7 taper threads, 8 male end, 9 female end; 11 faces of cylinder, 12 torque shoulder faces, 13 imperfect teeth, 14 complete teeth, 15 metal interference sealing surfaces.
(5) specific embodiment
Referring to Fig. 2, Fig. 3, a kind of integral body with metal interference sealing connects petroleum sleeve joint, form by containing 8 one of male end and female end 9 other ends, screw thread is a taper thread 7, there is shoulder at the two ends of internal and external screw thread pipe end 9,8, and the connecting portion of sleeve pipe comprises torque shoulder, taper thread 7, pipe end place metal interference sealing.Torque shoulder is two shoulders, and outer shoulder 1 and interior shoulder 6 are 90 °.The metal interference sealing of pipe end place is in the end of externally threaded top and internal thread, and metal interference sealing in pipe end place is made up of the face of cylinder 3 and taper seat 5, and 5 of the face of cylinder 3 and taper seats have a changeover portion 4.The tapering of tapered tread 7 is 1: 16, pitch 5～8 button/inches, and profile of tooth is the buttress thread of 10 ° of 3 ° of tensile side half-angles and compressed side half-angles.
Claims (3)
1. the integral body with metal interference sealing connects petroleum sleeve joint, form by containing one of male end and female end other end, screw thread is a taper thread, there is shoulder at the two ends of internal and external screw thread pipe end, the connecting portion of sleeve pipe comprises torque shoulder and taper thread, the connecting portion that it is characterized in that sleeve pipe comprises the metal interference sealing of pipe end place, and metal interference sealing in pipe end place is made up of the face of cylinder and taper seat, and a changeover portion is arranged between the face of cylinder and taper seat.
2. the integral body of band metal interference sealing according to claim 1 connects petroleum sleeve joint, it is characterized in that the metal interference sealing of pipe end place is in the end of externally threaded top and internal thread.
3. the integral body of band metal interference according to claim 1 and 2 sealing connects petroleum sleeve joint, and the tapering that it is characterized in that tapered tread is 1: 16, pitch 5～8 button/inches, and profile of tooth is the buttress thread of 3 ° of tensile side half-angles and 10 ° of compressed side half-angles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420107543 CN2747352Y (en) | 2004-10-29 | 2004-10-29 | Integral coupled petroleum sleeve joint with metal interference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420107543 CN2747352Y (en) | 2004-10-29 | 2004-10-29 | Integral coupled petroleum sleeve joint with metal interference |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2747352Y true CN2747352Y (en) | 2005-12-21 |
Family
ID=35707892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420107543 Expired - Fee Related CN2747352Y (en) | 2004-10-29 | 2004-10-29 | Integral coupled petroleum sleeve joint with metal interference |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2747352Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104499981A (en) * | 2014-11-26 | 2015-04-08 | 无锡世联丰禾石化装备科技有限公司 | Heavy oil thermal recovery wellhead gas injection blowout preventer |
| CN105909183A (en) * | 2016-06-15 | 2016-08-31 | 东营威玛石油钻具有限公司 | Screwed joint of high-torsion-resistance drilling tool |
| CN107288761A (en) * | 2017-06-09 | 2017-10-24 | 中国航发湖南动力机械研究所 | Sealing structure and gas-turbine unit bearing block oil seal structure |
-
2004
- 2004-10-29 CN CN 200420107543 patent/CN2747352Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104499981A (en) * | 2014-11-26 | 2015-04-08 | 无锡世联丰禾石化装备科技有限公司 | Heavy oil thermal recovery wellhead gas injection blowout preventer |
| CN105909183A (en) * | 2016-06-15 | 2016-08-31 | 东营威玛石油钻具有限公司 | Screwed joint of high-torsion-resistance drilling tool |
| CN107288761A (en) * | 2017-06-09 | 2017-10-24 | 中国航发湖南动力机械研究所 | Sealing structure and gas-turbine unit bearing block oil seal structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20051221 Termination date: 20131029 |