Determining electrical conductivity of a laminated earth formati

Determining electrical conductivity of an earth layer

Determining formation anisotropy based in part on lateral...

Determining properties of earth formations using the...

Device and method for measurement by guided waves on a metal...

Device and method for measurement of resistivity outside of...

Device for scanning or detecting electromagnetic waves

Dielectric well logging system with at least three transmitter c

Dielectric well logging system with electrostatically shielded c

Dielectric well logging with radially oriented coils

Digital induction logging system including means for generating

Digital induction logging tool

Digital induction logging tool including means for compensating

Digital induction logging tool including means for measuring pha

Digital two frequency generator for use in borehole heterodyne m

Dipmeter apparatus and method using transducer array having long

Directional antenna system for use in a borehole incorporating a

Directional electromagnetic measurements insensitive to dip...

Directional resistivity measurements for azimuthal proximity...

Downhole induction resistivity tool