Method and apparatus for down hole pressure and temperature mea

Method and apparatus for downhole chromatography

Method and apparatus for formation testing

Method and apparatus for generating data and analyzing the same

Method and apparatus for in situ determination of permeability a

Method and apparatus for in-situ measurement of ground heave cha

Method and apparatus for instantaneously indicating permeability

Method and apparatus for intersecting a blowout well from a reli

Method and apparatus for investigating drag and torque loss in t

Method and apparatus for investigating subsurface conditions

Method and apparatus for ion-selective discrimination of...

Method and apparatus for ion-selective discrimination of...

Method and apparatus for locating stratification in production f

Method and apparatus for locating the position of a drill core s

Method and apparatus for logging a well below a downhole pump

Method and apparatus for logging earth boreholes

Method and apparatus for logging earth boreholes using self-cont

Method and apparatus for logging inclined earth boreholes using

Method and apparatus for logging short radius horizontal drainho

Method and apparatus for measurement of fluid density and flow r