Method for sensing and estimating the shape and location of oil-

Method for signal enhancement in azimuthal propagation...

Method for subsurface electromagnetic surveying using two or...

Method for testing metal detectors

Method for the operation and for the evaluation of signals from

Method for using electromagnetic grounded antennas as directiona

Method for variable radial depth induction log

Method including electrical self potential measurements for dete

Method of and apparatus for carrying out measurements on open an

Method of and apparatus for determining if a buried current...

Method of and apparatus for measuring tensor resistivity

Method of and apparatus for microelectric measuring of inhomogen

Method of and system for locating a single passive...

Method of calibrating an azimuthal inductive cross-coil or...

Method of combining vertical and magnetic dipole induction...

Method of compensating laterlog measurements for...

Method of dating different levels in a terrestrial geological be

Method of deep penetration well logging using three receivers

Method of detecting soil structure using voltage slope and...

Method of determining and displaying the orientation of subsurfa