<p>An apparatus for measuring a resistivity of a formation comprising an instrumented bit assembly coupled to a bottom end of the apparatus. At least one first electromagnetic wave antenna transmits an electromagnetic wave signal into the formation. At least one second electromagnetic wave antenna located on the instrumented bit assembly and longitudinally spaced apart from the at least one first electromagnetic wave antenna receives the electromagnetic wave signal transmitted through the formation. Electronic circuitry is operably coupled to the at least one second electromagnetic wave antenna to process the received signal to determine a resistivity of the formation proximate the instrumented bit assembly.</p>
申请公布号
AU2010343292(B2)
申请公布日期
2014.10.16
申请号
AU20100343292
申请日期
2010.01.22
申请人
HALLIBURTON ENERGY SERVICES INC.
发明人
BITTAR, MICHAEL S.;MINOSYAN, VADIM;WEAVER, GARY E.