Inventor

BARBER THOMAS D

US38 patents

⚠️ This page may combine multiple inventors who share the name “BARBER THOMAS D”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

BARBER THOMAS D

SCHLUMBERGER TECHNOLOGY CORP

Method and apparatus for directional well logging with a shield having sloped slots

Spatial frequency method and apparatus for investigating earth conductivity with high vertical resolution by induction techniques

Constructing co-located antennas by winding a wire through an opening in the support

Method and apparatus for cancellation of borehole effects due to a tilted or transverse magnetic dipole

Shielding method and apparatus for selective attenuation of an electromagnetic energy field component

Antenna structures for electromagnetic well logging tools

Method and apparatus for cancellation of borehole effects due to a tilted or transverse magnetic dipole

Borehole current correction methods and apparatus

Coil shielding method for selective attenuation of an electromagnetic energy field component

Shielding apparatus for selective attenuation of an electromagnetic energy field component

Induction logging sonde with metallic support

Induction logging sonde with metallic support having a coaxial insulating sleeve member

Co-located antennas

Electromagnetic logging tool calibration system

Apparatus and methods for determining isotropic and anisotropic formation resistivity in the presence of invasion

Apparatus and methods for reducing borehole current effects

Borehole current correction for tilted or transverse magnetic dipoles on conductive supports

Method and apparatus for correcting data developed from a well tool disposed at a dip angle in a wellbore to eliminate the effects of the dip angle on the data

Phasor processing of induction logs including skin effect correction

Method and apparatus for evaluating the resistivity of invaded formations at high apparent dip angle

Phasor processing of induction logs including shoulder and skin effect correction

Apparatus and methods for induction-SFL logging

Method and system for indicating anisotropic resistivity in an earth formation

Method for determining sonde error for an induction or propagation tool with transverse or triaxial arrays

Method of correcting triaxial induction arrays for borehole effect

Extra bucking coils as an alternative way to balance induction arrays

Method for determining induction sonde error

Method and apparatus for enhancing the resolution of an induction logging tool in measuring a characteristic of a borehole formation

Extended 1D inversion of electromagnetic measurements for formation evaluation

Method for determining triaxial conductivity with arbitrary orientation using multiaxial electromagnetic measurements

Parametric modeling of well log data to remove periodic errors

Extra bucking coils to balance induction arrays

Methods for determining dielectric permittivity spectrum of underground rock formations

WU PETER T

Real-time fracture detection and fracture orientation estimation using tri-axial induction measurements

Real-time formation anisotropy and dip evaluation using tri-axial induction measurements

Adaptive inversion for vertical resistivity logs from multiaxial induction measurements

BARBER THOMAS D

Method for determining spatial distribution of fluid injected into subsurface rock formations

ANDERSON BARBARA

Methods for determining dielectric permittivity spectrum of underground rock formations