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公开(公告)号：WO2018152648A1
公开(公告)日：2018-08-30
申请号：PCT/CA2018/050220
申请日：2018-02-26
Applicant: EVOLUTION ENGINEERING INC
Inventor： BUTERNOWSKY, Barry Daniel , WEST, Kurtis Kenneth Lee , LIU, Jili , LOGAN, Aaron William , YOUSEFI KOOPAEI, Mahdi , MARTIN, Vincent Raymond , MASSOUD, Ali Ahmed Ali , SWITZER, David Arthur Sidney , XU, Mingdong , KAZEMI MIRAKI, Mojtaba
Abstract: A wireless communications system for a downhole drilling operation comprises a drill string, surface communications equipment, and a downhole telemetry tool. The surface communications equipment comprises a surface EM communications module with an EM downlink transmitter configured to transmit through at least a portion of the drill string an EM downlink transmission at a frequency between 0.5 Hz and 180 kHz. The downhole telemetry tool is mountable to a drill string and has a downhole electromagnetic (EM) communications unit with an EM downlink receiver configured to receive the EM downlink transmission. The downhole EM communications unit can further comprise an EM uplink transmitter configured to transmit an EM uplink transmission at a frequency between 0.5 Hz and 180 kHz, in which case the surface EM communications module further comprises an EM uplink receiver configured to receive the EM uplink transmission.
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公开(公告)号：EP3585981A1
公开(公告)日：2020-01-01
申请号：EP18758325.7
申请日：2018-02-26
Applicant: Evolution Engineering Inc.
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