Method and apparatus for cancelling powerline noise in geophysic

Method and apparatus for combined induction and imaging well...

Method and apparatus for control of magnetic flux direction...

Method and apparatus for correcting data developed from a well t

Method and apparatus for deconvolving apparent conductivity meas

Method and apparatus for detecting and measuring inclusions in s

Method and apparatus for detecting borehole effects due to...

Method and apparatus for detecting boundary stratum and adjustin

Method and apparatus for detecting subterranean anomalies by gen

Method and apparatus for detecting underground electrically cond

Method and apparatus for determining dielectric permittivity of

Method and apparatus for determining dip angle, and...

Method and apparatus for determining fluid content and conductiv

Method and apparatus for determining formation boundary near...

Method and apparatus for determining influence of mutual magneti

Method and apparatus for determining parameters of a transition

Method and apparatus for determining the conductivity of subsurf

Method and apparatus for determining the content of...

Method and apparatus for determining the nature of...

Method and apparatus for determining the nature of...