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Title:
PRESSING-TYPE MARINE THREADED DRILL PIPE
Document Type and Number:
WIPO Patent Application WO/2020/093270
Kind Code:
A1
Abstract:
A pressing-type marine threaded drill pipe, comprising a first abutment body (1), a second abutment body (2), a driving snap-fit assembly (3), a pressing ring (4), and pressing elastic bodies (5); the pressing ring (4) is provided between the first abutment body (1) and the second abutment body (2), the pressing ring (4) is snap-fitted to a T-shaped snap-fit ring groove (24) on a connecting ring surface of the second abutment body (2) by means of a T-shaped snap-fit ring tooth (41) at one end, the other end of the pressing ring (4) abuts against a connecting ring groove (15) of the first abutment body (1), and the T-shaped snap-fit ring tooth (41) of the pressing ring (4) is elastically pressed by the pressing elastic bodies (5) to perform cushioning and support.

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Inventors:
ZHAO JUNXIAN (CN)
Application Number:
PCT/CN2018/114366
Publication Date:
May 14, 2020
Filing Date:
November 07, 2018
Export Citation:
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Assignee:
JIANGSU HEXIN PETROLEUM MACHINERY CO LTD (CN)
International Classes:
E21B17/043
Foreign References:
CN107630666A2018-01-26
US20140166308A12014-06-19
US5314014A1994-05-24
CN107269232A2017-10-20
US20020163190A12002-11-07
CN206513315U2017-09-22
Attorney, Agent or Firm:
JIANGSU YINCHUANG LAW FIRM (CN)
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