CN201810223U - Buttress thread sleeve joint - Google Patents
Buttress thread sleeve joint Download PDFInfo
- Publication number
- CN201810223U CN201810223U CN2010205110950U CN201020511095U CN201810223U CN 201810223 U CN201810223 U CN 201810223U CN 2010205110950 U CN2010205110950 U CN 2010205110950U CN 201020511095 U CN201020511095 U CN 201020511095U CN 201810223 U CN201810223 U CN 201810223U
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- CN
- China
- Prior art keywords
- thread
- sleeve pipe
- male connection
- screw thread
- casing coupling
- 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.)
- Expired - Lifetime
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- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
- Earth Drilling (AREA)
Abstract
The utility model relates to a buttress thread sleeve joint. The dimensions of the sleeve external thread joint and a sleeve collar are 346.075mm; the tapers of the sleeve external thread joint and the sleeve collar are 1:16; the thread pitch is five threads per 25.4mm, and the height of a thread is 1.575mm; the geometric parameters of the sleeve thread external joint include: the thread angle of a thread guiding surface is 10 degrees, the thread angle of a thread bearing surface is 3 degrees, and big-end diameter D4 is 346.47mm; incomplete thread length g is 50.39mm, complete thread length L7 is 64.22mm, the total length from a sleeve end to a vanishing point plane L4 is 114.62mm, intermediate diameter E7 is 344.24mm, and minimum length Lc of full crested thread from sleeve end is 64.22mm; and the geometric parameters of the sleeve collar include: the thread angle of a thread guiding surface is 10 degrees, the thread angle of a thread bearing surface is 3 degrees, outer diameter W of the collar is 358.775-371.475mm; the minimum length NL of the collar is 269.88mm, the diameter Q of a boring hole of the collar is 349.63mm, and the width b of a bearing surface a4 is 9.53mm. The utility model is easy to use.
Description
Technical field
The utility model relates to a kind of screwed connection, especially a kind of BCSG joint, and specifically a kind of non-standard 346.075mm BCSG joint belongs to the technical field of the sleeve pipe of cementing the well.
Background technology
In recent years, along with the degree of depth of oil drilling further increases, the oil well environment becomes more abominable, and American Petroleum Institute's standardization of casing (being the API standard) is not suitable for the oil well of special operation condition.Squeeze performance demands for the hole condition that satisfies deep well oilfield resists the sleeve pipe height, the body external diameter is 346.075mm, and wall thickness is the 15.37mm sleeve pipe, selects for use in the oil field at home.Because the sleeve pipe of this kind specification belongs to non-API series sleeve pipe, American Petroleum Institute's standardization of casing is the nipple product of this kind specification not.Though the used off-gauge body external diameter in oil field is 346.075mm, wall thickness is the sleeve pipe collapsoing strength raising of 15.37mm, but joint bonding strength and fatigue strength do not improve, and therefore developing the screwed connection that is complementary with it is the technical barrier that present enterprise faces.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of BCSG joint is provided, and it is simple and compact for structure, and is easy to use, can satisfy field working conditions.
According to the technical scheme that the utility model provides, described BCSG joint comprises sleeve pipe male connection and casing coupling; Described sleeve pipe male connection is provided with trapezoidal partially external screw thread, is provided with inclined to one side trapezoidal internal thread in the described casing coupling; Casing coupling and sleeve pipe male connection are fastened and connected by corresponding trapezoidal internal thread partially and trapezoidal partially external screw thread respectively; The dimensions of described sleeve pipe male connection and casing coupling is 346.075mm; The tapering of sleeve pipe male connection and casing coupling is 1: 16; The pitch of sleeve pipe male connection and casing coupling is that every 25.4mm ridge number is 5 teeth, and thread depth is 1.575mm; Other geometric parameter of sleeve pipe male connection is: screw thread spigot surface tooth form angle is 10 °, and screw thread bearing surface tooth form angle is 3 °, outside diameter D
4Be 346.47mm; Incomplete thread length g is 50.39mm, the complete thread length L
7Be 64.22mm, pipe end is to end point plane total length L
4Be 114.62mm, middle footpath E
7Be 344.24mm, screw thread minimum length Lc is 64.22mm from the full top of pipe end; Other geometric parameter of casing coupling is: screw thread spigot surface tooth form angle is 10 °, and screw thread bearing surface tooth form angle is 3 °, and box cupling external diameter W is 358.775～371.475mm; Box cupling minimum length N
LBe 269.88mm, box cupling bore diameter Q is 349.63mm, bearing surface a
4Width b be 9.53mm.
The shoulder that reverses of described sleeve pipe male connection end is-15 ° of reverse shoulders that reverse.
Advantage of the present utility model: sleeve pipe male connection and casing coupling adopt screw thread to be fastened and connected, the sleeve pipe male connection is identical with American Petroleum Institute's 5B standard-required with tolerance between casing coupling, reasonable in design, use easy to maintenance, satisfy advantages such as on-the-spot applying working condition, can on the oil field tubulars body diameter is the non-standard sleeve pipe of 346.075mm, use.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
The utility model is described in further detail below in conjunction with concrete drawings and Examples.
As shown in Figure 1: the utility model comprises sleeve pipe male connection 1, casing coupling 2 and reverses shoulder 3.
Oil field tubulars is comparatively special with the applied environment of drill bit, need pierce underground darker distance.The external diameter of drill bit body and wall thickness influence the application conditions of drill bit, therefore for uses that be complementary of drill bit body, the dimensions of sleeve pipe male connection 1 and casing coupling 2 is exactly important techniques performance indications.
As shown in Figure 1: described sleeve pipe male connection 1 is provided with trapezoidal partially external screw thread, is provided with inclined to one side trapezoidal internal thread in the casing coupling 2, and casing coupling 2 and sleeve pipe male connection 1 are connected by screw threads for fastening.Described sleeve pipe male connection 1 is 346.075mm with the specification of casing coupling 2, other physical dimensions of described sleeve pipe male connection 1 are: the tapering of sleeve pipe male connection 1 is 1: 16, pitch is that every 25.4mm ridge number is 5 teeth, thread depth is 1.575mm, screw thread spigot surface tooth form angle is 10 °, screw thread bearing surface tooth form angle is 3 °, outside diameter D
4Be 346.47mm; Incomplete thread length g is complete thread plane a
2To end point plane a
5Length be 50.39mm, the complete thread length L
7Be the hand-tight plane a of pipe end
1To complete thread plane a
2Length be 64.22mm, pipe end is to end point plane total length L
4Be 114.62mm, middle footpath E
7Be 344.24mm, screw thread minimum length Lc is 64.22mm from the full top of pipe end; The shoulder 3 that reverses of sleeve pipe male connection 1 end is-15 ° of reverse shoulders that reverse; The geometric parameter of casing coupling 2 is: tapering is 1: 16, pitch is that every 25.425.4mm ridge number is 5 teeth, and thread depth is 1.575mm, and screw thread spigot surface tooth form angle is 10 °, screw thread bearing surface tooth form angle is 3 °, and box cupling external diameter W is 358.775～371.475mm; Box cupling minimum length N
LBe 269.88mm, box cupling bore diameter Q is 349.63mm, bearing surface a
4Width b be 9.53mm.Sleeve pipe male connection 1 is identical with American Petroleum Institute's 5B standard-required with the tolerance of 2 of casing couplings.
During drilling well, adopting off-gauge body external diameter is 346.075mm, and wall thickness is that the internal surface of sleeve pipe of 15.37mm links to each other with the conventional bit that continues to creep into, and the gap is little, can guarantee that drill bit passes through smoothly, and continue to creep into; Casing annulus has enough gaps, can guarantee the cementing concrete ring thickness.The requirement of cementing concrete ring thickness can be satisfied in annular space single face gap outside casing coupling 2 positions.To adopt off-gauge body external diameter be 346.075mm, when wall thickness is the BCSG of 15.37mm, do not need to change existing casing programme and bit size, just can satisfy the oil field requirement.
The utility model sleeve pipe male connection 1 adopts screw thread to be fastened and connected with casing coupling 2, sleeve pipe male connection 1 is identical with American Petroleum Institute's 5B standard-required with the tolerance of 2 of casing couplings, reasonable in design, use easy to maintenance, satisfy advantages such as on-the-spot applying working condition, can on the oil field tubulars body diameter is the non-standard sleeve pipe of 346.075mm, use.
Claims (2)
1. a BCSG joint comprises sleeve pipe male connection (1) and casing coupling (2); Described sleeve pipe male connection (1) is provided with trapezoidal partially external screw thread, and described casing coupling is provided with inclined to one side trapezoidal internal thread in (2); Casing coupling (2) is fastened and connected by corresponding trapezoidal internal thread partially and trapezoidal partially external screw thread respectively with sleeve pipe male connection (1); It is characterized in that: the dimensions of described sleeve pipe male connection (1) and casing coupling (2) is 346.075mm; Sleeve pipe male connection (1) is 1: 16 with the tapering of casing coupling (2); Sleeve pipe male connection (1) is that every 25.4mm ridge number is 5 teeth with the pitch of casing coupling (2), and thread depth is 1.575mm; Other geometric parameter of sleeve pipe male connection (1) is: screw thread spigot surface tooth form angle is 10 °, and screw thread bearing surface tooth form angle is 3 °, outside diameter D
4Be 346.47mm; Incomplete thread length g is 50.39mm, the complete thread length L
7Be 64.22mm, pipe end is to end point plane total length L
4Be 114.62mm, middle footpath E
7Be 344.24mm, screw thread minimum length Lc is 64.22mm from the full top of pipe end; Other geometric parameter of casing coupling (2) is: screw thread spigot surface tooth form angle is 10 °, and screw thread bearing surface tooth form angle is 3 °, and box cupling external diameter W is 358.775～371.475mm; Box cupling minimum length N
LBe 269.88mm, box cupling bore diameter Q is 349.63mm, bearing surface a
4Width b be 9.53mm.
2. BCSG joint according to claim 1 is characterized in that: the shoulder (3) that reverses of described sleeve pipe male connection (1) end is-15 ° of reverse shoulders that reverse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205110950U CN201810223U (en) | 2010-08-26 | 2010-08-26 | Buttress thread sleeve joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205110950U CN201810223U (en) | 2010-08-26 | 2010-08-26 | Buttress thread sleeve joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201810223U true CN201810223U (en) | 2011-04-27 |
Family
ID=43893166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205110950U Expired - Lifetime CN201810223U (en) | 2010-08-26 | 2010-08-26 | Buttress thread sleeve joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201810223U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102852469A (en) * | 2012-04-25 | 2013-01-02 | 无锡西姆莱斯石油专用管制造有限公司 | Special buttress thread oil sleeve joint |
| CN103046878A (en) * | 2012-12-25 | 2013-04-17 | 胜利油田龙玺石油钢管有限公司 | Unconventional BC thread casing joint |
| CN104265190A (en) * | 2014-09-28 | 2015-01-07 | 天津德华石油装备制造有限公司 | TTGM-4 special thread structure oil casing coupling |
-
2010
- 2010-08-26 CN CN2010205110950U patent/CN201810223U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102852469A (en) * | 2012-04-25 | 2013-01-02 | 无锡西姆莱斯石油专用管制造有限公司 | Special buttress thread oil sleeve joint |
| CN102852469B (en) * | 2012-04-25 | 2015-06-10 | 无锡西姆莱斯石油专用管制造有限公司 | Special buttress thread oil sleeve joint |
| CN103046878A (en) * | 2012-12-25 | 2013-04-17 | 胜利油田龙玺石油钢管有限公司 | Unconventional BC thread casing joint |
| CN104265190A (en) * | 2014-09-28 | 2015-01-07 | 天津德华石油装备制造有限公司 | TTGM-4 special thread structure oil casing coupling |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20140922 Granted publication date: 20110427 |
|
| RINS | Preservation of patent right or utility model and its discharge | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20150322 Granted publication date: 20110427 |
|
| RINS | Preservation of patent right or utility model and its discharge | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110427 |
|
| CX01 | Expiry of patent term |