WESTERN ATLAS INTERNATIONAL, INC.

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Technologies

Intl Class Technology # of Patents/ App Rank in Class
 
 
 
G01V GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS 7123
 
 
 
E21B EARTH OR ROCK DRILLING 2554
 
 
 
G06F ELECTRIC DIGITAL DATA PROCESSING 10383
 
 
 
F42B EXPLOSIVE CHARGES, e.g. FOR BLASTING; FIREWORKS; AMMUNITION 922
 
 
 
G01N INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 6167
 
 
 
G01R MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES 4131
 
 
 
G01T MEASUREMENT OF NUCLEAR OR X-RADIATION 341
 
 
 
H01L SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR 3296
 
 
 
G01B MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS287
 
 
 
G01F MEASURING VOLUME, VOLUME FLOW, MASS FLOW, OR LIQUID LEVEL; METERING BY VOLUME 250

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6,510,796 Shaped charge for large diameter perforationsAug 14, 01Jan 28, 03[F42B]
6,305,289 Shaped charge for large diameter perforationsSep 30, 98Oct 23, 01[F42B]
6,218,662 Downhole carbon dioxide gas analyzerApr 23, 98Apr 17, 01[G01N]
6,196,319 Hydraulic sand removal toolJun 21, 99Mar 06, 01[E21B]
6,176,344 Method and system for determining the azimuth position and distance of a reflecting subsurface formationOct 27, 97Jan 23, 01[G01V]
6,175,536 Cross-well seismic mapping method for determining non-linear properties of earth formations between wellboresMay 01, 97Jan 16, 01[G01V]
6,163,153 Nuclear magnetic resonance pulse sequence for optimizing instrument electrical power usageSep 11, 98Dec 19, 00[G01R, G01V]
6,124,590 Method for determining thermal neutron capture cross-section of earth formations using measurements from multiple capture gamma ray detectorsJul 22, 98Sep 26, 00[G01V]
6,121,773 Longitudinal NMR well logging apparatus and methodOct 21, 97Sep 19, 00[G01V]
6,116,337 Articulated downhole electrical isolation jointJun 17, 98Sep 12, 00[E21B, H01R]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Filing Date Issue/Pub Date Intl Class
6,987,386 Determining resistivity of a geological formation using circuitry located within a borehole casingNov 01, 02Jan 17, 06[G01V]
6,577,144 Electrical voltages and resistances measured to inspect metallic cased wells and pipelinesMar 19, 01Jun 10, 03[G01B]
2002/0177,954 Processing formation resistivity measurements obtained from within a cased well used to quantitatively determine the amount of oil and gas presentJul 10, 02Nov 28, 02[G01V]
2002/0043,977 Determining resistivity of a formation adjacent to a borehole having casing with an apparatus having all current conducting electrodes within the cased wellJun 08, 01Apr 18, 02[G01V]
6,353,322 Method for automatically calibrating resistivity well logs for effects of change in wellbore diameter and circuit driftJun 09, 98Mar 05, 02[G01V]
6,249,122 Electrical voltages and resistances measured to inspect metallic cased wells and pipelinesNov 22, 99Jun 19, 01[G01R, G01V]
6,246,240 Determining resistivity of a formation adjacent to a borehole having casing with an apparatus having all current conducting electrodes within the cased wellMay 12, 99Jun 12, 01[G01V]
6,216,779 Downhole tool actuatorDec 17, 97Apr 17, 01[E21B]
6,157,195 Formation resistivity measurements from within a cased well used to quantitatively determine the amount of oil and gas presentMay 27, 97Dec 05, 00[G01V]
6,111,959 Sound spreaderOct 30, 97Aug 29, 00[H04R]
6,095,258 Pressure actuated safety switch for oil well perforatingAug 28, 98Aug 01, 00[F42B, E21B, F23Q]
6,084,408 Methods for acquisition and processing of nuclear magnetic resonance signals for determining fluid properties in petroleum reservoirs having more than one fluid phaseFeb 13, 98Jul 04, 00[G01V]
6,060,885 Method and apparatus for determining the resistivity and conductivity of geological formations surrounding a boreholeJun 13, 97May 09, 00[G01V]
6,044,325 Conductivity anisotropy estimation method for inversion processing of measurements made by a transverse electromagnetic induction logging instrumentJul 21, 98Mar 28, 00[G06F]
5,999,883 Conductivity anisotropy estimation method for inversion processing of measurements made by a transverse electromagnetic induction logging instrumentMar 17, 98Dec 07, 99[G01V, G06F]
5,999,884 Method for determining the axial position of formation layer boundaries using measurements made by a transverse electromagnetic induction logging instrumentMar 19, 98Dec 07, 99[G01V]
5,992,246 Underwater corrosion locaterApr 07, 98Nov 30, 99[G01M]
5,995,906 Method for reconciling data at seismic and well-log scales in 3-D earth modelingOct 03, 97Nov 30, 99[G06F]
5,984,009 Logging tool retrieval systemFeb 06, 98Nov 16, 99[E21B]
5,973,321 Method for determining multiple thermal neutron decay components from the capture gamma ray spectrum measured by a pulsed neutron instrumentJun 11, 97Oct 26, 99[G01V]

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