China Petroleum & Chemical Corporation

Sinopec Research Institute of Petroleum Engineering

Sanguo Li

Wei Zhang

Xin Li

Yijin Zeng

Weining Ni

Yiting Zheng

Jibo Li

Jianhua Liu

Yongjie Li

Jinping Wu

Jintai Mi

Zuyang Zhu

Meiling Zhan

Wenli Wang

Huangsheng Lu

Dawei Deng

A resistivity measurement while drilling (MWD) device, including: a transmitting module arranged on an outer surface of a drill collar, for generating an induced current between the drill collar and surrounding formation by inductive coupling; a receiving electrode group including at least two electrodes, for receiving a measured current that reaches the electrode from the induced current through corresponding formation, two electrodes in the receiving electrode group being multiplexing electrodes; a resistivity calculation module configured to be connected to all or a part of the electrodes in the receiving electrode group in a measurement mode of the resistivity MWD device, to calculate the measured current received by a corresponding electrode and obtain resistivity of formation corresponding to the corresponding electrode; and a data transmission module configured to be connected to the multiplexing electrodes in a transmission mode of the resistivity MWD device, for transmitting calculated resistivity to a ground device.

Resistivity measurement while drilling device and method

Disclosed is a data transmission system and a method for transmission of downhole measurement data to the ground. The system includes a drill string mounted with a logging while drilling measurement tool, and a throw while drilling section, which accommodates a micromemory. The throw while drilling section includes a housing which is mounted outside of the drill string as a sleeve to form a clearance space therebetween; a control circuit; and a wireless transceiver. The throw while drilling section releases, under function of a micromemory release instruction transmitted by the control circuit, the micromemory loaded with the downhole measurement data to the ground.

Data transmission system and method for transmission of downhole measurement-while-drilling data to ground

Growing community of inventors

Beijing, China

Sanguo Li