Alexandre N. Bespalov

Formation resistivity imager with reduced leakage to mandrel

Concentric buttons of different sizes for imaging and standoff correction

Use of electrodes and multi-frequency focusing to correct eccentricity and misalignment effects on transversal induction measurements

Apparatus and Methods for Drilling Wellbores by Ranging Existing Boreholes Using Induction Devices

Concentric return and transmitter electrodes for imaging and standoff distances compensation

METHODS AND APPARATUS FOR PROVIDING COMPLIMENTARY RESISTIVITY AND STANDOFF IMAGE

Transient EM for geosteering and LWD/wireline formation evaluation

Method and apparatus for borehole wall resistivity imaging with full circumferential coverage

Apparatus and method for detection of position of a component in an earth formation

Apparatus and method for detection of position of a component in an earth formation

System and method for measuring resistivity of an earth formation with correction for mud electrical properties

Multi-resolution borehole resistivity imaging

Concentric buttons of different sizes for imaging and standoff correction

Multi-resolution borehole resistivity imaging

Octupole induction sensors for resistivity imaging in non-conductive muds

Statistical correction for standoff in two-terminal imager operating in oil-based mud

Method of finite-element discretization in heterogeneous and highly conductive grid cells

Apparatus and method for imaging subsurface materials using a pad having a plurality of electrode sets

Characterization of fracture length and formation resistivity from array induction data

Method and apparatus for resistivity measurements using dual impedance voltage measurements

SINGLE-DIPOLE HIGH FREQUENCY ELECTRIC IMAGER

Two-axial pad formation resistivity imager

Use of Electrodes and Multi-Frequency Focusing to Correct Eccentricity and Misalignment Effects on Transversal Induction Measurements

Method and apparatus for reducing borehole and eccentricity effects in multicomponent induction logging

Method and apparatus for resistivity imaging in boreholes with an antenna and two spaced apart electrodes

Mixed galvanic-inductive imaging in boreholes

Correction of multi-component measurements for tool eccentricity in deviated wells

Method and apparatus for making multi-component measurements in deviated wells

Method and apparatus for correcting underestimation of formation anisotropy ratio

Processing of multi-component induction data in the presence of borehole abnormalities

Two-axial pad formation resistivity imager

High resolution resistivity earth imager

High resolution resistivity earth imager

High resolution resistivity earth imager

Multi-frequency focusing for MWD resistivity tools