公开(公告)号：US20170082774A1

公开(公告)日：2017-03-23

申请号：US15258787

申请日：2016-09-07

Applicant: CHINA UNIVERSITY OF PETROLEUM-BEIJING

Inventor： LIZHI XIAO ,  XIN LI ,  GUANGZHI LIAO ,  SIHUI LUO ,  ZHE SUN ,  WEI LIU ,  WEILIANG CHEN ,  JIE WANG ,  KUNTIE LIAO

IPC: G01V3/32 ,  G01R33/34 ,  E21B49/00 ,  G01V3/14

CPC classification number: G01V3/32 ,  G01N24/081 ,  G01R33/34092 ,  G01R33/3808 ,  G01R33/383

Abstract: The present invention provides a three-dimensional nuclear magnetic resonance logging instrument probe, a logging instrument and an antenna excitation method, where the probe includes: a probe framework, a magnet and an antenna; four magnets are uniformly distributed along a circumference of the probe framework, the magnets are magnetized in a radial direction of the probe framework, two magnets placed opposite to each other are magnetized from outside to inside, and the other two magnets placed opposite to each other are magnetized from inside to outside; in the probe framework, each of the magnets is provided with independently fed antennas; antennas corresponding to each of the magnets comprise a left antenna provided on one side of the corresponding magnet and a right antenna provided on the other side of the corresponding magnet; the left antenna and the right antenna corresponding to each magnet are electrically connected.