公开(公告)号：US11163086B2

公开(公告)日：2021-11-02

申请号：US16477109

申请日：2018-01-10

Applicant: University of Houston System

Inventor： Jiefu Chen ,  Xinyu Liu ,  David R. Jackson

IPC: G01V3/30 ,  E21B47/002 ,  E21B49/00 ,  G01N22/00

Abstract: An oil-based mud wellbore imaging apparatus for measuring formation permittivity and resistivity includes a reflectometry-type microwave scanning system. The system contains at least one high-Q microstrip resonator with one or more slots on the top surface. The microstrip resonator is excited by one port, which is fed with electromagnetic signals by a coaxial cable. From the phase detection of signal at the port, the formation resistivity and permittivity can be determined and corresponding borehole images can be generated.