CN205677546U - A kind of different drill stem joint connection structure coordinating tapering - Google Patents

A kind of different drill stem joint connection structure coordinating tapering Download PDF

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Publication number
CN205677546U
CN205677546U CN201620443092.5U CN201620443092U CN205677546U CN 205677546 U CN205677546 U CN 205677546U CN 201620443092 U CN201620443092 U CN 201620443092U CN 205677546 U CN205677546 U CN 205677546U
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China
Prior art keywords
tapering
thread
screw thread
external screw
male connection
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CN201620443092.5U
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Chinese (zh)
Inventor
彭腊梅
刘伟
邓代传
田小军
杨英男
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanxi Jingding Gaobao Drilling Limited Liability Company
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Shaanxi Tai He Science And Technology Ltd
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Priority to CN201620443092.5U priority Critical patent/CN205677546U/en
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Abstract

The utility model belongs to petroleum gas and exploitation of mineral resources field, is specifically related to a kind of different drill stem joint connection structure coordinating tapering.A kind of different drill stem joint connection structure coordinating tapering, including male connection and female adapter, male connection is for externally threaded tapering male connection, and external screw thread uses trapezoidal thread structure or angular thread structure, external screw thread tapering vertically is m, and tapering m is 1:6~1:32;Female adapter is the band female tapering female adapter matching with male connection, and internal thread uses trapezoidal thread structure or angular thread structure, and the tapering of internal thread is n, and tapering n is 1:5.9~1:31.9.Disclosed in the utility model, a kind of different drill stem joint connection structures coordinating tapering pass through the big end of conjugate control screw thread and the respective fit clearance of small end of different taper threads, and then improving the stressing conditions of external screw thread big end root, the load proportion distribution making external screw thread bear more equalizes.

Description

A kind of different drill stem joint connection structure coordinating tapering
Technical field
The utility model belongs to petroleum gas and exploitation of mineral resources field, is specifically related to a kind of different drilling rod coordinating tapering Joint connecting structure.
Background technology
Drilling rod is the important tool in drilling operation, is used for transmitting moment of torsion and the feed/pulling force of rig.As creeping into Main power transmission in journey and stressed member, drilling rod in hole by the compound work of the various load such as tensile, compressive, bending, torsion and vibration With so often there is the accident of drill rod breaking, not only impact produces, and causes the loss of manpower, financial resources.Statistics shows Showing, the critical section of drilling rod is positioned at external screw thread big end root.
Traditional drill stem joint connection structure mainly uses two ways: the first is the threaded engagement of identical tapering, spiral shell After line engagement, holding to small end greatly from screw thread, the fit clearance of screw thread all keeps consistent;The second is section cord column drill Although the joint screw thread of bar is designed as different taperings, but in order to strengthen the connection rigidity of screw thread, the big end of screw thread uses interference Coordinate.Both drill stem joint connection structures, external screw thread big end root is stress maximum point, i.e. the critical section of drilling rod is positioned at External screw thread big end root.
Utility model content
Utility model purpose: the problem that the utility model exists for above-mentioned prior art makes improvement, i.e. this practicality are new Type discloses a kind of different drill stem joint connection structure coordinating tapering, on the basis not changing drill pipe thickness and base level pitch diameter On, by changing external screw thread or the internal thread tapering of one of them, improve the stressing conditions of external screw thread big end root, make outer spiral shell The load proportion distribution that line bears more equalizes.
Technical scheme: a kind of different drill stem joint connection structures coordinating tapering, including male connection and internal thread connect Head,
Described male connection is for externally threaded tapering male connection, and described external screw thread uses trapezoidal thread structure Or angular thread structure, described external screw thread tapering vertically is m, and tapering m is 1:6~1:32;
Described female adapter is the band female tapering female adapter matching with described male connection, institute Stating internal thread and using trapezoidal thread structure or angular thread structure, the tapering of described internal thread is n, and tapering n is 1:5.9~1: 31.9。
Further, described male connection tapering m vertically is less than female adapter tapering n vertically.
Further, the tooth side angle of described externally threaded trapezoidal thread structure side is-5 °~60 °, the tooth side of opposite side Angle is-5 °~60 °.
Further, the tooth side angle of the trapezoidal thread structure side of described internal thread is-5 °~60 °, the tooth side of opposite side Angle is-5 °~60 °.
Further, the both sides of described externally threaded triangle thread structure have identical tooth side angle, and this tooth side angle is 27.5 °~33 °.
Further, the both sides of the triangle thread structure of described internal thread have identical tooth side angle, and this tooth side angle is 27.5 °~33 °.
Beneficial effect: disclosed in the utility model, a kind of different drill stem joint connection structures coordinating tapering are bored by difference The big end of conjugate control screw thread of degree screw thread and the respective fit clearance of small end, and then improve the stress feelings of external screw thread big end root Condition, the load proportion distribution making external screw thread bear more equalizes.
Brief description
Fig. 1 is the schematic diagram of a kind of different drill stem joint connection structures coordinating tapering disclosed in the utility model;
Fig. 2 is the partial enlarged drawing at the A of Fig. 1;
Fig. 3 is the structural representation of drilling rod;
Fig. 4 is the drill stem joint connection structure schematic diagram of same cooperation tapering;
Fig. 5 is the partial enlarged drawing at the B of Fig. 4;
Wherein:
1-male connection 2-female adapter
Detailed description of the invention:
Below detailed description of the invention of the present utility model is described in detail.
Specific embodiment 1
A kind of different drill stem joint connection structure coordinating tapering, including male connection and female adapter,
Male connection is for externally threaded tapering male connection, and external screw thread uses trapezoidal thread structure, external screw thread Tapering vertically is m, and tapering m is 1:6;
Female adapter is the band female tapering female adapter matching with male connection, and internal thread uses Trapezoidal thread structure, the tapering of internal thread is n, and tapering n is 1:5.9.
Further, male connection tapering m vertically is less than female adapter tapering n vertically.
Further, the tooth side angle of externally threaded trapezoidal thread structure side is-5 °, and the tooth side angle of opposite side is 30 °.
Further, the tooth side angle of the trapezoidal thread structure side of internal thread is-5 °, and the tooth side angle of opposite side is 30 °.
In order to improve the stressing conditions of drilling rod external screw thread root, the utility model is not changing drill pipe thickness and base level pitch diameter On the basis of, by changing external screw thread or the internal thread tapering of one of them, improve the stressing conditions of external screw thread big end root, The load proportion distribution making external screw thread bear more equalizes.
As it is shown on figure 3, drilling rod includes male connection 1 and female adapter 2, male connection 1 and female adapter 2 edge Axial tapering is respectively m and n.
Fig. 4 is the drill stem joint connection structure that existing drill rod thread is designed with most same cooperation taperings, i.e. m=n. Fig. 5 is the screw-threaded engagement close-up schematic view after the same tool joint coordinating tapering connects, it can be seen that outer spiral shell Line joint is identical with the base level pitch diameter of female adapter, so the fit clearance of drill rod thread all keeps one from holding greatly to small end Causing, the FEM model according to drill rod thread carries out equivalent stress analysis, and the critical section of drill rod thread is that male connection is big End root, practical effect also demonstrate that this point.
Shown in Fig. 1 is the utility model, a kind of different drill stem joint connection structures coordinating tapering, with reference to Fig. 3, same Sample, drilling rod includes male connection 1 and female adapter 2, male connection 1 and female adapter 2 tapering vertically respectively For m and n, and unlike Fig. 4 structure, the tapering m of male connection 1 is different with the tapering n of female adapter 2, and m < n.
Fig. 2 is the screw-threaded engagement close-up schematic view after the utility model drilling rod connects, it can be seen that at K The point left side, i.e. near screw thread big end position, is matched in clearance after external screw thread and internal thread engagement, at K point, external screw thread and interior spiral shell The fit clearance of line is 0, on the right of K point, i.e. near screw thread small end position, joins for interference after external screw thread and internal thread engagement Close.This fit system makes the big of screw thread hold born power and moment of torsion relatively reduced, can be effectively improved the big end of external screw thread The stressing conditions of root, the load proportion distribution making external screw thread bear more equalizes.
Therefore, the utility model is not on the basis of changing drill pipe thickness and base level pitch diameter, by change external screw thread or The internal thread tapering of one of them, changes the stress of drilling rod critical section, effectively improves fatigue strength and the service life of drilling rod.
Specific embodiment 2
Roughly the same with specific embodiment 1, differ only in:
Tapering m is 1:32;
Tapering n is 1:31.9
Further, the tooth side angle of externally threaded trapezoidal thread structure side is 0 °, and the tooth side angle of opposite side is 60 °.
Further, the tooth side angle of the trapezoidal thread structure side of internal thread is 0 °, and the tooth side angle of opposite side is 60 °.
Specific embodiment 3
Roughly the same with specific embodiment 1, differ only in:
Tapering m is 1:10;
Tapering n is 1:8;
The tooth side angle of externally threaded trapezoidal thread structure side is 60 °, and the tooth side angle of opposite side is-5 °.
The tooth side angle of the trapezoidal thread structure side of internal thread is 60 °, and the tooth side angle of opposite side is-5 °.
Specific embodiment 4
Roughly the same with specific embodiment 1, differ only in:
Tapering m is 1:6;
Tapering n is 1:5.9;
External screw thread uses angular thread structure;
Internal thread uses angular thread structure;
The both sides of externally threaded triangle thread structure have identical tooth side angle, and this tooth side angle is 27.5 °.
The both sides of the triangle thread structure of internal thread have identical tooth side angle, and this tooth side angle is 27.5 °.
Specific embodiment 5
Roughly the same with specific embodiment 1, differ only in:
Tapering m is 1:32;
Tapering n is 1:31.9;
External screw thread uses angular thread structure;
Internal thread uses angular thread structure;
The both sides of externally threaded triangle thread structure have identical tooth side angle, and this tooth side angle is 33 °.
The both sides of the triangle thread structure of internal thread have identical tooth side angle, and this tooth side angle is 33 °.
Specific embodiment 6
Roughly the same with specific embodiment 1, differ only in:
Tapering m is 1:16;
Tapering n is 1:8;
External screw thread uses angular thread structure;
Internal thread uses angular thread structure;
The both sides of externally threaded triangle thread structure have identical tooth side angle, and this tooth side angle is 30 °.
The both sides of the triangle thread structure of internal thread have identical tooth side angle, and this tooth side angle is 30 °.
Above embodiment of the present utility model is elaborated.But the utility model is not limited to above-mentioned enforcement Mode, in the ken that art those of ordinary skill is possessed, can also be without departing from the utility model ancestor Make a variety of changes on the premise of purport.

Claims (1)

1. the different drill stem joint connection structure coordinating tapering, it is characterised in that include that male connection and internal thread connect Head,
Described male connection is for externally threaded tapering male connection, and described external screw thread uses trapezoidal thread structure or three Angle helicitic texture, described external screw thread tapering vertically is m, and tapering m is 1:6~1:32;
Described female adapter is the band female tapering female adapter matching with described male connection, described interior Screw thread uses trapezoidal thread structure or angular thread structure, and the tapering of described internal thread is n, and tapering n is 1:5.9~1:31.9;
Described male connection tapering m vertically is less than female adapter tapering n vertically;
The tooth side angle of described externally threaded trapezoidal thread structure side is-5 °~60 °, and the tooth side angle of opposite side is-5 °~60 °;
The tooth side angle of the trapezoidal thread structure side of described internal thread is-5 °~60 °, and the tooth side angle of opposite side is-5 °~60 °;
The both sides of described externally threaded triangle thread structure have identical tooth side angle, and this tooth side angle is 27.5 °~33 °;
The both sides of the triangle thread structure of described internal thread have identical tooth side angle, and this tooth side angle is 27.5 °~33 °.
CN201620443092.5U 2016-05-16 2016-05-16 A kind of different drill stem joint connection structure coordinating tapering Active CN205677546U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620443092.5U CN205677546U (en) 2016-05-16 2016-05-16 A kind of different drill stem joint connection structure coordinating tapering

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620443092.5U CN205677546U (en) 2016-05-16 2016-05-16 A kind of different drill stem joint connection structure coordinating tapering

Publications (1)

Publication Number Publication Date
CN205677546U true CN205677546U (en) 2016-11-09

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201620443092.5U Active CN205677546U (en) 2016-05-16 2016-05-16 A kind of different drill stem joint connection structure coordinating tapering

Country Status (1)

Country Link
CN (1) CN205677546U (en)

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Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
TR01 Transfer of patent right

Effective date of registration: 20180601

Address after: 048026, five / F, 2288 office building, Hongxing East Street, Jincheng, Shanxi.

Patentee after: Shanxi Jingding Gaobao Drilling Limited Liability Company

Address before: 710086 No. 5, shaori Village Industrial Park, Weiyang District, Xi'an, Shaanxi

Patentee before: Shaanxi Tai He Science and Technology Ltd.

TR01 Transfer of patent right