CN202325287U - Anti-torsion drill stem joint connection structure - Google Patents
Anti-torsion drill stem joint connection structure Download PDFInfo
- Publication number
- CN202325287U CN202325287U CN2011204186016U CN201120418601U CN202325287U CN 202325287 U CN202325287 U CN 202325287U CN 2011204186016 U CN2011204186016 U CN 2011204186016U CN 201120418601 U CN201120418601 U CN 201120418601U CN 202325287 U CN202325287 U CN 202325287U
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- joint
- thread
- drill stem
- torsion
- female
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Abstract
The utility model discloses an anti-torsion drill stem joint connection structure, which consists of a male joint and a female joint, wherein the male joint is axially screwed in the female joint; and connecting ends of the male joint and the female joint are provided with matched conical threads. The main structural improvement is that: the matched conical threads are triangular threads with a thread angle alpha of 620-660 degrees; adjacent thread roots of threads are circular arc transition structures with R of 1.5-2.0 mm; and the nose end face of the male joint and the female joint are axially screwed up to form a double-shoulder common sealing structure. According to the anti-torsion drill stem joint connection structure, on one hand, the geometric area of the thread profile is dramatically increased and the torsion strength of a drill stem joint is effectively improved by expanding the thread angle, and on the other hand, a drill stem joint integrated anti-torsion structure is formed through the double-shoulder surface contact sealing structure. Through a series of structural improvement, the sealing property and the torsion strength of the drill stem joint are greatly improved, and high anti-torsion requirements of drilling an ultra deep well by a drill stem can be met.
Description
Technical field
The utility model relates to a kind of tool joint, and specifically, the utility model relates to a kind of antitorque tool joint syndeton.
Background technology
In the last hundred years, along with science and technology development, the improvement of oil exploration technology and drilling-production equipment, the professional person is easy to search out on earth the geological stratification of storing oil.Petroleum resources are strategic resources, the blood vessels of industry, and national governments all attach great importance to production of energy.Current; Shallow oil resource in land is exhausted basically on the earth, and the coastal state has turned to sea oil drilling and production, and the deep layer petroleum resources are sought through promoting the probing ability by inland country; The prerequisite of these realizations of goal is to bore ultradeep well, bores ultradeep well and must use high antitorque drilling rod.The angle of rifling of existing common tool joint is 55
0Or 60
0, non-threaded section bonding surface of joint is matched in clearance, this is simple in structure, connection is reliable, easy to manufacture, satisfies conventional oil probing requirement fully.But existing common tool joint thread syndeton globality is not enough, and sealing is poor, does not possess high anti-twisting property.So common drilling rod can not directly be used for the ultradeep well probing.
The utility model content
The utility model is primarily aimed at the deficiency of prior art; A kind of antitorque tool joint syndeton is proposed; This structure comprises that form of thread improvement design, threaded engagement and non-threaded section bonding surface are sealed and matched; Can significantly promote the anti-twisting property and the sealing of tool joint through above-mentioned a series of technological improvements, to satisfy the drilling requirement of ultradeep well.
The utility model is realized technical goal through following technical proposals.
Antitorque tool joint syndeton, it is formed among directly axially being tightened on female joint by male joint.Said male joint link is an external thread structure, and the female joint link is a female thread structure, and internal and external threads is the identical taper thread of nominal diameter.Its improvements are: said taper thread is tooth form angle α=62
0～66
0Triangle thread, the arc transition structure that the adjacent tooth form root of screw thread is R=1.5mm～2.0mm.After axially screwing, said male joint and female joint form two common hermetically-sealed constructions of shoulder; The nose face that is male joint contacts with the interior shoulder end face of female joint; And male joint root shoulder contacts the integrated anti-button structure of two places face contact seal structure formation tool joint with the outer shoulder end face of female joint.
In the said structure, taper thread is tooth form angle α=64
0～66
0Triangle thread.
The utility model compared with prior art has following good effect:
1, strengthen the form of thread angle, significantly increase the geometric area of form of thread, effectively improve aluminium knock-off joint torsional strength, screw thread is difficult for taking place the slide fastener accident during drilling well;
2, two shoulder hermetically-sealed constructions make male joint after being connected, form overall structure with female joint, and overall structure significantly strengthens the screw thread torsional strength;
3, strengthen form of thread angle and adjacent thread tooth form root and adopt the arc transition structure, help implementing screw thread facing spreading processing, spreading processing had both improved the thread surface quality, also eliminated internal stress, also improved the screw thread torsional strength simultaneously.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the male joint structural representation.
Fig. 3 is the female joint structural representation.
Fig. 4 is the form of thread structural representation.
The specific embodiment
Based on accompanying drawing and combine embodiment, the utility model is described further below.
Antitorque tool joint syndeton shown in Figure 1, it is formed among directly axially being tightened on female joint 2 by male joint 1.Male joint 1 link shown in Figure 2 is an external thread structure, and female joint 2 links shown in Figure 3 are female thread structure, and internal and external threads is the identical taper thread of nominal diameter.The utility model under the situation that drill pipe diameter is confirmed, in order to strengthen the tool joint torsional strength, rationally adds the tooth form angle of large taper screw thread according to what bore ultradeep well high antitorque requirement designs to drilling rod, promptly improves the form of thread geometric area.Present embodiment is the antitorque tool joint syndeton of XHT-39, and taper thread is tooth form angle α=66 in this structure
0Triangle thread, the adjacent tooth form root arc transition structure that is provided with R1.6mm as shown in Figure 4.After adopting male joint 1 and female joint 2 axially to screw, the utility model forms two common hermetically-sealed constructions of shoulder; The nose face 1.2 of male joint 1 in the hermetically-sealed construction contacts with female joint 2 interior shoulder end faces 2.2; And male joint 1 root shoulder 1.1 contacts with female joint 2 outer shoulder end faces 2.1; Face contact seal structure in two places forms the joint integrative-structure, so promote the torsional strength of tool joint.In addition, rationally strengthen form of thread angle and adjacent thread tooth form root and adopt the arc transition structure, help implementing the spreading of screw thread facing and strengthen, spreading processing had both improved the thread surface quality, also eliminated internal stress, also improved the screw thread torsional strength simultaneously.
The utility model improves through an above-mentioned architecture, promotes the sealing performance and the torsional strength of tool joint greatly, compares with same specification AP1 drilling rod, and torsional strength improves more than 75%, the slide fastener quality accident can not take place in the use.
Claims (2)
1. antitorque tool joint syndeton, it is formed among directly axially being tightened on female joint (2) by male joint (1); Said male joint (1) link is an external thread structure, and female joint (2) link is a female thread structure, and internal and external threads is the identical taper thread of nominal diameter; It is characterized in that: said taper thread is tooth form angle α=62
0～66
0Triangle thread, the arc transition structure that the adjacent tooth form root of screw thread is R=1.5mm～2.0mm; After axially screwing with female joint (2), said male joint (1) forms two common hermetically-sealed constructions of shoulder; The nose face (1.2) that is male joint (1) contacts with the interior shoulder end face of female joint (2) (2.2); And male joint (1) root shoulder (1.1) contacts the integrated anti-button structure of two places face contact seal structure formation tool joint with the outer shoulder end face of female joint (2) (2.1).
2. antitorque tool joint syndeton according to claim 1 is characterized in that: said taper thread is tooth form angle α=64
0～66
0Triangle thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204186016U CN202325287U (en) | 2011-10-28 | 2011-10-28 | Anti-torsion drill stem joint connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204186016U CN202325287U (en) | 2011-10-28 | 2011-10-28 | Anti-torsion drill stem joint connection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202325287U true CN202325287U (en) | 2012-07-11 |
Family
ID=46437269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204186016U Expired - Lifetime CN202325287U (en) | 2011-10-28 | 2011-10-28 | Anti-torsion drill stem joint connection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202325287U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111236857A (en) * | 2020-02-20 | 2020-06-05 | 北京中煤矿山工程有限公司 | Double-shoulder anti-torque drill rod of raise boring machine capable of transmitting data |
-
2011
- 2011-10-28 CN CN2011204186016U patent/CN202325287U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111236857A (en) * | 2020-02-20 | 2020-06-05 | 北京中煤矿山工程有限公司 | Double-shoulder anti-torque drill rod of raise boring machine capable of transmitting data |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120711 |