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Title:
SHORT-RADIUS DRILLING TOOL, TRACK-CONTROLLABLE LATERAL DRILLING TOOL AND METHOD
Document Type and Number:
WIPO Patent Application WO/2022/083602
Kind Code:
A1
Abstract:
A short-radius drilling tool, a track-controllable lateral drilling tool and a method. The track-controllable lateral drilling tool comprises a high-throughput lateral drilling section (b) and a drilling power transmission section (a), wherein the high-throughput lateral drilling section (b) can realize drilling of an extended well section (e) of a short-extremely short radius well section (d), by means of the short-extremely short radius well section (d) being laterally extended from a main wellbore (c). The track-controllable lateral drilling tool enables the wellbore to perform whipstocking, from the tail end or any position in the middle of an original wellbore track, by a short-extremely short radius for drilling and then to laterally extend for drilling, such that the track-controllable lateral drilling tool has the engineering feasibility and practical value for thin reservoir development, residual oil tapping, horizontal well development of a sub-salt reservoir, the combined development of multiple layers, coalbed methane development, underground coal mine gasification development, unconventional oil and gas development, shallow horizontal well drilling, submarine shallow horizontal well drilling and the development of other minerals.

Inventors:
XU ZICHEN (CN)
YANG ZHONGHUA (CN)
WAN XIAOYUE (CN)
Application Number:
PCT/CN2021/124796
Publication Date:
April 28, 2022
Filing Date:
October 19, 2021
Export Citation:
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Assignee:
WAN XIAOYUE (CN)
International Classes:
E21B7/04; E21B7/06; E21B17/20; E21B47/022; E21B47/12; E21B47/18; E21B49/00
Foreign References:
CN112878910A2021-06-01
CN112267831A2021-01-26
CN112324332A2021-02-05
CN112832681A2021-05-25
CN109854174A2019-06-07
US6318480B12001-11-20
Attorney, Agent or Firm:
BEIJING SANYOU INTELLECTUAL PROPERTY AGENCY LTD. (CN)
Download PDF:
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