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Title:
COMPOUND DRILLING AND SLIDE DRILLING COMBINED DIRECTIONAL DRILLING CONTROL TOOL AND METHOD
Document Type and Number:
WIPO Patent Application WO/2023/245945
Kind Code:
A1
Abstract:
A compound drilling and slide drilling combined directional drilling control tool and method. The drilling control tool comprises a housing, and a driving shaft (1) provided with a fluid input channel (1a), a rotor (14) provided with a fluid delivering channel (14a) and a mandrel (17) provided with a mandrel channel (17a), which extend in the housing and are connected to each other in sequence. The mandrel channel (17a) is communicated with the fluid delivering channel (14a); a radial gap between the housing and the rotor (14) is formed into an annular pressurization channel (14b); a clutch cavity (17b) communicated with the annular pressurization channel (14b) is formed in a radial gap between the housing and the mandrel (17), such that the housing can be coupled or decoupled with respect to the rotor (14) and the mandrel (17) by driving the rotor (14) to have different rotational speeds.

Inventors:
LIU WEI (CN)
XU ZHAOHUI (CN)
FANG CHAO (CN)
TIAN JIALIN (CN)
LI MU (CN)
LIN ZILI (CN)
LUO LIANGBO (CN)
ZHAI XIAOQIANG (CN)
LI YAFEI (CN)
LYU QIAN (CN)
LUO XICHAO (CN)
Application Number:
PCT/CN2022/128041
Publication Date:
December 28, 2023
Filing Date:
October 27, 2022
Export Citation:
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Assignee:
CHINA NAT PETROLEUM CORP (CN)
CNPC ENG TECH RES & DEV CO LTD (CN)
BEIJING PETROLEUM MACHINERY CO LTD (CN)
International Classes:
E21B7/04; E21B4/02
Foreign References:
CN115012823A2022-09-06
CN112585331A2021-03-30
US20180252039A12018-09-06
CN111852334A2020-10-30
Attorney, Agent or Firm:
RUNPING & PARTNERS (CN)
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