CN104895504A - Steel connector and aluminum alloy pipe body threaded connection type light drill rod - Google Patents
Steel connector and aluminum alloy pipe body threaded connection type light drill rod Download PDFInfo
- Publication number
- CN104895504A CN104895504A CN201510242697.8A CN201510242697A CN104895504A CN 104895504 A CN104895504 A CN 104895504A CN 201510242697 A CN201510242697 A CN 201510242697A CN 104895504 A CN104895504 A CN 104895504A
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- internal thread
- steel joint
- aluminium alloys
- shoulder
- external screw
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- Earth Drilling (AREA)
- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
Abstract
Provided is a steel connector and aluminum alloy pipe body threaded connection type light drill rod. An aluminum alloy pipe body is composed of a thread section and a middle section. The inner side of an internal thread steel connector is provided with an internal thread, the internal thread steel connector is connected with an external thread at one end of the aluminum alloy pipe body through the internal thread, and a connection part is a transition shoulder. One end of the aluminum alloy pipe body is provided with a sealing shoulder surface matched with the internal thread steel connector and an interference fit shoulder. An internal thread is arranged on the inner side of an external thread steel connector, the external thread steel connector is connected with an external thread at one end of the aluminum alloy pipe body through the internal thread, and a connection part is a transition shoulder. The other end of the aluminum alloy pipe body is provided with a sealing shoulder surface matched with the external thread steel connector and an interference fit shoulder. The transition shoulder of the internal thread steel connector and the transition shoulder of the external thread steel connector are respectively in interference fit with the sealing surface of a thickened section of the aluminum alloy pipe body. The steel connector and aluminum alloy pipe body threaded connection type light drill rod has the advantages that high-strength aluminum alloy serves as a drill rod material to greatly improve the strength weight ratio, and the corrosion of hydrogen sulfide and carbon dioxide can be effectively avoided.
Description
Technical field
The present invention relates to the Lwdp in a kind of Oil/gas Well development process, particularly relate to a kind of steel joint-screw connected Lwdp of aluminium alloys body.
Background technology
Along with petroleum resources exploitation, Shallow Oil-Gas resource reduces day by day, we must not explore petroleum resources less than going in darker stratum, ocean, shale, and operating mode more sophisticated, require higher to drilling rod, need thermal crack resistant, anti-hydrogen embrittlement, anticorrosive etc., thus make us in the urgent need to a kind of lighter, new material that strength-weight ratio is higher to the mohole drilling realizing drill steel and cannot accomplish and horizontal movement drilling well greatly.
Summary of the invention
For avoiding the deficiencies in the prior art, the invention provides a kind of steel joint-screw connected Lwdp of aluminium alloys body.
Technical scheme of the present invention is: a kind of steel joint-screw connected Lwdp of aluminium alloys body, comprise internal thread steel joint, external screw thread steel joint and aluminium alloys body, described aluminium alloys body is made up of thread segment and interlude, internal thread is had inside described internal thread steel joint, internal thread steel joint is connected by the external screw thread of internal thread with aluminium alloys body one end, and coupling part is transition shoulder; Aluminium alloys body one end is provided with the sealing shoulder face and interference fit shoulder of mating with internal thread steel joint; There is internal thread the inner side of external screw thread steel joint, and external screw thread steel joint is connected by the external screw thread of internal thread with aluminium alloys body one end, and coupling part is transition shoulder; The aluminium alloys body other end is provided with the sealing shoulder face and interference fit shoulder of mating with external screw thread steel joint; The transition shoulder of internal thread steel joint and the transition shoulder of external screw thread steel joint form interference fit with the sealing surface of aluminium alloys body thick section respectively.
Described internal thread steel joint connects transition shoulder and axis angle is 18 °.
Described aluminium alloys body and external screw thread are the flat trapezoidal fine thread of tapering 1:32.
The internal thread of described internal thread steel joint and the external screw thread of external screw thread steel joint are meet the drilling tool thread that API standard meets interchangeability.
The invention has the beneficial effects as follows: high-strength aluminum alloy realizes strength-weight ratio as drill rod materials and significantly improves, make drilling well quicker, safer, mohole drilling, horizontal drilling become light, and drilling well energy consumption is lower, more environmental protection, can effectively prevent hydrogen sulfide and carbon dioxide corrosion simultaneously.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is closely-pitched type screw thread schematic diagram of the present invention;
Fig. 3 is for meeting API standard rig screw thread schematic diagram.
Wherein 1 is internal thread, and 2 is internal thread steel joint, and 3 is sealing shoulder face, and 4 is sealing shoulder, and 5 is external screw thread, and 6 is external screw thread steel joint, and 7 is transition shoulder, and 8 is interference fit shoulder, and 9 is aluminium alloys body, and 10 is axis, and 11 is thick section, and 12 is sealing surface.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described further;
A kind of steel joint-screw connected Lwdp of aluminium alloys body, comprise internal thread steel joint 2, external screw thread steel joint 6 and aluminium alloys body 9, internal thread 1 is had inside described internal thread steel joint 2, internal thread steel joint 2 is connected by the external screw thread 5 of internal thread 1 with aluminium alloys body 9 one end, there is internal thread 1 inner side of external screw thread steel joint 6, external screw thread steel joint 6 is connected by the external screw thread 5 of internal thread 1 with aluminium alloys body 9 one end, and internal thread steel joint 2, external screw thread steel joint 6 are transition shoulder 7 with aluminium alloys body 9 coupling part; The transition shoulder 7 of internal thread steel joint 2 forms interference fit with the sealing surface 8,12 of aluminium alloys body thick section respectively with the transition shoulder 7 of external screw thread steel joint 6.
Described aluminium alloys body 9 one end is provided with the sealing shoulder face 3 and interference fit shoulder 8 of mating with internal thread steel joint 2; Described aluminium alloys body 9 other end is provided with the sealing shoulder face 3 and interference fit shoulder 8 of mating with external screw thread steel joint 6.
It is 18 ° that described internal thread steel joint 2 connects transition shoulder 7 with axis 10 angle.
Described aluminium alloys body 9 and external screw thread 5 are the flat trapezoidal fine thread of tapering 1:32.
The internal thread 1 of described internal thread steel joint 2 and the external screw thread 5 of external screw thread steel joint 6 meet the drilling tool thread of interchangeability for meeting API standard.
Claims (4)
1. steel joint-screw connected Lwdp of aluminium alloys body, comprise internal thread steel joint, external screw thread steel joint and aluminium alloys body, it is characterized in that described aluminium alloys body is made up of thread segment and interlude, internal thread is had inside described internal thread steel joint, internal thread steel joint is connected by the external screw thread of internal thread with aluminium alloys body one end, and coupling part is transition shoulder; Aluminium alloys body one end is provided with the sealing shoulder face and interference fit shoulder of mating with internal thread steel joint; There is internal thread the inner side of external screw thread steel joint, and external screw thread steel joint is connected by the external screw thread of internal thread with aluminium alloys body one end, and coupling part is transition shoulder; The aluminium alloys body other end is provided with the sealing shoulder face and interference fit shoulder of mating with external screw thread steel joint; The transition shoulder of internal thread steel joint and the transition shoulder of external screw thread steel joint form interference fit with the sealing surface of aluminium alloys body thick section respectively.
2. a kind of steel joint-screw connected Lwdp of aluminium alloys body according to claim 1, is characterized in that described internal thread steel joint connects transition shoulder and axis angle is 18 °.
3. aluminium alloys body according to claim 2, is characterized in that described aluminium alloys body and external screw thread are the flat trapezoidal fine thread of tapering 1:32.
4. a kind of steel joint-screw connected Lwdp of aluminium alloys body according to claim 1, is characterized in that the internal thread of described internal thread steel joint and the external screw thread of external screw thread steel joint are meet the drilling tool thread that API standard meets interchangeability.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510242697.8A CN104895504A (en) | 2015-05-14 | 2015-05-14 | Steel connector and aluminum alloy pipe body threaded connection type light drill rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510242697.8A CN104895504A (en) | 2015-05-14 | 2015-05-14 | Steel connector and aluminum alloy pipe body threaded connection type light drill rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104895504A true CN104895504A (en) | 2015-09-09 |
Family
ID=54028420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510242697.8A Pending CN104895504A (en) | 2015-05-14 | 2015-05-14 | Steel connector and aluminum alloy pipe body threaded connection type light drill rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104895504A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4240652A (en) * | 1979-05-24 | 1980-12-23 | Reynolds Metals Company | Lightweight drill rod |
| CN102900377A (en) * | 2012-09-05 | 2013-01-30 | 中国石油天然气集团公司 | Threaded connection type all-aluminum alloy drill stem |
| CN203257339U (en) * | 2013-04-26 | 2013-10-30 | 上海海隆石油管材研究所 | Connecting structure for aluminum alloy drill rod pipe body and steel connectors |
| CN204082025U (en) * | 2014-09-20 | 2015-01-07 | 淄博通光都金属科技有限公司 | A kind of aluminium drill pipe and jumper steel joint thereof |
| CN104533311A (en) * | 2014-12-05 | 2015-04-22 | 中国石油天然气集团公司 | Connection structure for aluminum drill stem pipe and connectors |
| CN204782807U (en) * | 2015-05-14 | 2015-11-18 | 东营威玛石油钻具有限公司 | Steel connects light -duty drilling rod of aluminum alloy tube body threaded connection formula |
-
2015
- 2015-05-14 CN CN201510242697.8A patent/CN104895504A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4240652A (en) * | 1979-05-24 | 1980-12-23 | Reynolds Metals Company | Lightweight drill rod |
| CN102900377A (en) * | 2012-09-05 | 2013-01-30 | 中国石油天然气集团公司 | Threaded connection type all-aluminum alloy drill stem |
| CN203257339U (en) * | 2013-04-26 | 2013-10-30 | 上海海隆石油管材研究所 | Connecting structure for aluminum alloy drill rod pipe body and steel connectors |
| CN204082025U (en) * | 2014-09-20 | 2015-01-07 | 淄博通光都金属科技有限公司 | A kind of aluminium drill pipe and jumper steel joint thereof |
| CN104533311A (en) * | 2014-12-05 | 2015-04-22 | 中国石油天然气集团公司 | Connection structure for aluminum drill stem pipe and connectors |
| CN204782807U (en) * | 2015-05-14 | 2015-11-18 | 东营威玛石油钻具有限公司 | Steel connects light -duty drilling rod of aluminum alloy tube body threaded connection formula |
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Application publication date: 20150909 |
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| WD01 | Invention patent application deemed withdrawn after publication |