1
Charles C Counselman: Method and system for determining position on a moving platform, such as a ship, using signals from GPS satellites. Western Atlas International, Norman E Brunell, E Eugene Thigpen, January 16, 1990: US04894662 (264 worldwide citation)

Method and apparatus are disclosed for accurately determining position from GPS satellites and received on a ship using C/A code group delay observable TAU, 308 f.sub.o implicit carrier phase observable PHI, L1 band implicit f.sub.o carrier residual phase observable PSI.sub.L1, and L2 band implicit ...


2
Charles C Counselman III: Multi-antenna gas receiver for seismic survey vessels. Western Atlas International, Norman E Brunell, E Eugene Thigpen, February 28, 1989: US04809005 (198 worldwide citation)

Method and apparatus are disclosed for accurately determining position from GPS satellites and received on a ship using observations of C/A code group delay, L1 band center frequency carrier phase, L1 band 5.115 MHz implicit carrier phase, and L2 band 5.115 MHz implicit carrier phase. A precise meas ...


3
George William Wood, Ricky Lynn Workman, Michael W Norris: Distributed seismic data-gathering system. Western Atlas International, William A Knox, March 3, 1998: US05724241 (142 worldwide citation)

A distributed seismic data acquisition system includes a vast plurality of Autonomous Data Acquisition Modules (ADAM) to each of which are interconnected a subplurality of data-collection channels. Each data collection channel is comprised of an array of seismic sensors for continuously measuring se ...


4
Borislav J Tchakarov, Rocco DiFoggio, Stanislav W Forgang, Otto N Fanini, James C Hunziker, Marcelo F Civarolo: Downhole carbon dioxide gas analyzer. Western Atlas International, Darryl M Springs, April 17, 2001: US06218662 (123 worldwide citation)

A logging tool system for analyzing the carbon dioxide concentration in a fluid sample downhole in a borehole. A chamber is filled with the fluid sample and is closed to isolate the fluid sample from the borehole. The interior chamber volume is expanded to decompress the fluid sample, and a transmit ...


5
Michael C Chang: Alignable, threaded, sealed connection. Western Atlas International, Browning Bushman Zamecki & Anderson, March 13, 1990: US04907828 (101 worldwide citation)

The present invention is directed to an apparatus and method for assembling, aligning and securing a sealed connection. The apparatus and method of the present invention advantageously employ the mechanical leverage of a threaded connection, preferably square threads, to overcome the high O-ring sea ...


6
Srinivasa Chakravarthy, Pravin Gupta, Raghu Chunduru, Berthold F Kriegshauser, Otto N Fanini: Conductivity anisotropy estimation method for inversion processing of measurements made by a transverse electromagnetic induction logging instrument. Western Atlas International, Richard A Fagin, March 28, 2000: US06044325 (97 worldwide citation)

A method for generating an improved estimate of horizontal conductivity, dip angle, azimuth and anisotropy parameter of an earth formation penetrated by a wellbore from dual-frequency transverse electromagnetic induction measurements, comprising generating an initial estimate of the horizontal condu ...


7
Stanislav Forgang, Otto N Fanini, Leonty A Tabarovsky: Method and apparatus for transverse electromagnetic induction well logging. Western Atlas International, Richard A Fagin, July 14, 1998: US05781436 (93 worldwide citation)

A method of measuring the conductivity of earth formations penetrated by a wellbore. The method comprises selectively passing an alternating current through transmitter coils inserted into the wellbore. Each of the transmitter coils has a magnetic moment direction different from the magnetic moment ...


8
Christopher C Payton, Kurt M Strack, Leonty A Tabarovsky: Method and apparatus for measuring transient electromagnetic and electrical energy components propagated in an earth formation. Western Atlas International, Darryl M Springs, September 21, 1999: US05955884 (87 worldwide citation)

A single well transient electromagnetic ("TEM") apparatus and method is disclosed. The invention includes a wireline logging tool adapted for disposition in a borehole drilled in earth formations that has mounted thereon an electromagnetic transmitter and electric field transmitter for applying elec ...


9
W Scott Buckley, Andrew Patrick Lamb: Method for recording seismic data in deep water. Western Atlas International, Alan J Atkinson, February 15, 2000: US06024344 (86 worldwide citation)

A method for recording seismic data in deep water. A plurality of seismic data recorders are attached to a wire stored on a seismic vessel. A free end of the wire is deployed into the water, and the recorders are attached at selected positions along the wire. The wire and recorders are lowered into ...


10
John L Leder, John M Michaels, Than Shwe, John C Anderson: Method and apparatus for pressure, volume, and temperature measurement and characterization of subsurface formations. Western Atlas International, James L Jackson, Darryl M Springs, December 12, 1995: US05473939 (85 worldwide citation)

A method and apparatus for conducting in situ tests on a subsurface earth formation of interest which is traversed by a wellbore. A wireline formation testing instrument is positioned at formation depth and a sampling probe thereof is extended into fluid communication with the formation and isolated ...