公开(公告)号：US12189079B2

公开(公告)日：2025-01-07

申请号：US18569602

申请日：2022-10-28

Applicant: China University of Mining and Technology

Inventor： Haiyan Yang ,  Jianhua Yue ,  Zhixin Liu ,  Shuanggui Hu ,  Yunlei Xu ,  Wenyu Li ,  Huageng Ran ,  Rongqi Che ,  Menglang Sun ,  Zhenyang Li

IPC: G01V3/28 ,  G01V3/38

Abstract: A time domain electromagnetic tensor based logging method, relating to the field of induction logging. A transmitting coil system Tx and a receiving coil system Rx are each composed of three orthogonal direction coils, and the transmitting coil system and the receiving coil system form a borehole probe; a time domain electromagnetic field is excited by means of two orthogonal transmitting coil systems Tx, and a secondary field signal is received by two orthogonal receiving coil systems Rx located above transmitting coils and having a distance D; during each measurement, three directions are used for transmitting, nine component data is received at the same time, and each component is a series of induction potentials in one-to-one correspondence with measurement time sequences, and a potential or resistance change, from near to far, of the rock stratum where a measurement point is located is obtained after time-depth conversion.