Method and apparatus for acoustically investigating a casing and

Method and apparatus for acoustically measuring the transverse d

Method and apparatus for acoustically measuring the transverse d

Method and apparatus for acoustics logging of fluid density...

Method and apparatus for acquiring borehole seismic data in two

Method and apparatus for acquiring seismic signals in a borehole

Method and apparatus for acquiring seismic signals in a borehole

Method and apparatus for azimuthal logging of shear waves in...

Method and apparatus for borehole sensing

Method and apparatus for cement bond logging

Method and apparatus for cement bond tool

Method and apparatus for communicating data in a wellbore...

Method and apparatus for correlating geological structure horizo

Method and apparatus for coupling seismic sensors to a...

Method and apparatus for deriving compensated measurements in a

Method and apparatus for determining acoustic wave parameters fr

Method and apparatus for determining acoustic wave parameters in

Method and apparatus for determining cement conditions

Method and apparatus for determining cement conditions

Method and apparatus for determining compressional first arrival