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Title:
NEAR-BIT MULTI-PARAMETER DOWNHOLE MEASUREMENT WHILE DRILLING AND CONTROL SYSTEM
Document Type and Number:
WIPO Patent Application WO/2023/065739
Kind Code:
A1
Abstract:
A near-bit multi-parameter downhole measurement while drilling and control system, which consists of a ground device (10) and a downhole assembly. The downhole assembly sequentially comprises a bit (1), a multi-parameter collecting, measuring and emitting sub (2), a powered drilling tool (3), a receiving and emitting sub (5), a wireless communication sub (7), a non-magnetic drill collar (9), etc., wherein the measuring and emitting sub (2) collects data according to a preset time interval, stores the collected data in a storage module, and transmits same to a signal receiving antenna; a received signal is transmitted to the receiving and emitting sub (5) by means of a communication medium that is formed between the screw powered drilling tool and a drilling fluid; the receiving and emitting sub (5) performs wireless transmission in an electromagnetic coupling manner to send the signal to the wireless communication sub (7); the wireless communication sub (7) transfers the received signal to the ground device (10) by means of a mud pulse generator and in the form of a pulse signal; and a ground system performs data processing and analysis. The real-time measurement and control system of the present invention can monitor real-time changes of downhole engineering parameters in real time and perform real-time adjustment, thereby improving the drilling efficiency.

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Inventors:
LIAO HUALIN (CN)
LU MING (CN)
LIU JIANSHENG (CN)
NIU WENLONG (CN)
LU XIAOPENG (CN)
CHEN JINGKAI (CN)
Application Number:
PCT/CN2022/106152
Publication Date:
April 27, 2023
Filing Date:
July 18, 2022
Export Citation:
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Assignee:
UNIV CHINA PETROLEUM EAST CHINA (CN)
International Classes:
E21B47/13; E21B45/00; E21B47/00; E21B47/06; E21B47/07; E21B47/18
Foreign References:
CN114033361A2022-02-11
US20180355710A12018-12-13
US20180058200A12018-03-01
US20170242153A12017-08-24
CA2893150A12015-11-30
CN106014391A2016-10-12
CN204283413U2015-04-22
CN111852444A2020-10-30
NO20171153A12005-09-05
CN203702140U2014-07-09
CN103967481A2014-08-06
CN110984958A2020-04-10
CA2314061A12001-02-25
Attorney, Agent or Firm:
QINGDAO ZHIDILINGCHUANG PATENT AGENCY CO., LTD (CN)
Download PDF:
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