The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 25, 2020
Filed:
Aug. 08, 2017
China Petroleum & Chemical Corporation, Beijing, CN;
Sinopec Research Institute of Petroleum Engineering, Beijing, CN;
Yijin Zeng, Beijing, CN;
Weining Ni, Beijing, CN;
Xin Li, Beijing, CN;
Wei Zhang, Beijing, CN;
Jintai Mi, Beijing, CN;
Jianhua Liu, Beijing, CN;
Jibo Li, Beijing, CN;
Jinping Wu, Beijing, CN;
Meiling Zhan, Beijing, CN;
Wenli Wang, Beijing, CN;
Sanguo Li, Beijing, CN;
Yiting Zheng, Beijing, CN;
CHINA PETROLEUM & CHEMICAL CORPORATION, Beijing, CN;
SINOPEC RESEARCH INSTITUTE OF PETROLEUM ENGINEERING, Beijing, CN;
Abstract
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.