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Threaded connection type all-aluminum alloy drill stem

A threaded connection and aluminum alloy technology, which is applied to drill pipes, drill pipes, drilling equipment, etc., can solve the problems of complex production of all aluminum alloy drill pipes, high assembly precision, electrochemical corrosion, etc., and achieve low processing accuracy requirements, The effect of improving assembly efficiency and simplifying the process

Active Publication Date: 2013-01-30
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0005] The invention provides a screw-connected all-aluminum alloy drill pipe to solve the problem that the existing steel joint aluminum alloy drill pipe is not corrosion-resistant
The present invention also solves the problem of high assembly precision caused by hot-fitting of aluminum alloy drill pipes with steel joints
The invention also solves the problem that the steel joint aluminum alloy drill pipe is prone to electrochemical corrosion
The present invention can also solve the problems of complex manufacture and high cost of integral all-aluminum alloy drill pipes

Method used

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  • Threaded connection type all-aluminum alloy drill stem
  • Threaded connection type all-aluminum alloy drill stem
  • Threaded connection type all-aluminum alloy drill stem

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Embodiment Construction

[0027] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described with reference to the accompanying drawings.

[0028] Such as figure 1 As shown, the threaded all-aluminum alloy drill pipe 100 according to the embodiment of the present invention includes: an aluminum alloy drill pipe body 1 and an aluminum alloy drill pipe joint threaded at the end of the aluminum alloy drill pipe body. Different from the existing aluminum alloy drill pipe with steel joints, the aluminum alloy drill pipe body 1 and the drill pipe joint of the present invention are both made of aluminum alloy, and the assembly of the aluminum alloy drill pipe body 1 and the drill pipe joint It is carried out at room temperature without hot charging process. Different from the existing integral all-aluminum alloy drill pipe, the aluminum alloy drill pipe body 1 and the alum...

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Abstract

The invention provides a threaded connection type all-aluminum alloy drill stem. The threaded connection type all-aluminum alloy drill stem comprises an aluminum alloy drill stem pipe body and aluminum alloy drill stem joints which are connected at the end parts of the aluminum alloy drill stem pipe body through threads; the threaded connection performance between the aluminum alloy drill stem pipe body and the aluminum alloy joints and the threaded connection property between the aluminium alloy joints such as the tensile strength, torsional strength and sealing performance are not lower than the performance of an aluminum alloy drill stem with steel joints; compared with the aluminum alloy drill stem with the steel joints, the threaded connection type all-aluminum alloy drill stem is anticorrosive; and compared with an integral type all-aluminum alloy drill stem, the threaded connection type all-aluminum alloy drill stem has the advantages of simple machining technology, low cost and higher cost performance.

Description

technical field [0001] The invention relates to an aluminum alloy drill pipe used in oil and gas exploration and development, in particular to an all aluminum alloy drill pipe, especially a threaded all aluminum alloy drill pipe. Background technique [0002] Aluminum alloy drill pipe is divided into two types: steel joint aluminum alloy drill pipe and all aluminum alloy drill pipe. The steel joint aluminum alloy drill pipe is connected by the steel joint and the aluminum alloy drill pipe body by thread connection, thus forming a drill pipe. single rod. The steel joint and the aluminum alloy drill pipe body adopt a hot assembly process, that is, the steel joint is heated to a certain temperature during assembly to allow it to expand to a certain extent. Prevent thread shackles. All-aluminum alloy drill pipes are divided into integral aluminum alloy drill pipes and friction-welded aluminum alloy drill pipes. The all-aluminum alloy drill pipes used at home and abroad are int...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B17/042
Inventor 刘永刚潘志勇冯春王鹏卢强宋生印
Owner BC P INC CHINA NAT PETROLEUM CORP
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