1
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 (124 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 ...


2
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 (88 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 ...


3
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 ...


4
John M Michaels, John T Leder, James T Cernosek: Method and apparatus for acquiring and processing subsurface samples of connate fluid. Western Atlas International, James L Jackson, Darryl M Springs, January 3, 1995: US05377755 (85 worldwide citation)

A method and apparatus for downhole formation testing is provided for acquisition of a phase intact sample of connate fluid by direct or indirect pumping for filling of pressure containing sample tanks that are removable from a formation testing and sampling instrument for phase intact transportatio ...


5
John M Michaels, John T Leder: Method and apparatus for acquiring and processing subsurface samples of connate fluid. Western Atlas International, Darryl M Springs, April 19, 1994: US05303775 (82 worldwide citation)

A method and apparatus is provided for use in connection with a downhole formation testing instrument for acquisition of a phase intact sample of connate fluid for delivery via a pressure containing sample tank to a laboratory facility. One or more fluid sample tanks contained within the instrument ...


6
David Beard, Carlos Yansig, Robert A Lester: Synchronized digital stacking method and application to induction logging tools. Western Atlas International, Darryl M Springs, Richard A Fagin, September 26, 1995: US05452761 (78 worldwide citation)

An apparatus and method for digitally processing signals received by an induction logging tool having a transmitter and a plurality of receivers. An oscillating signal is provided to the transmitter, which causes eddy currents to flow in a surrounding formation. The magnitudes of the eddy currents a ...


7
Mike E Hunter: Load restraining panel. Darryl M Springs, July 14, 1981: US04278376 (62 worldwide citation)

In one exemplar embodiment, a load restraining apparatus for cargo vehicles having a generally rectangular load space defined by side walls and a flat bed is provided having a pair of elongated slotted-rail assemblies each of which includes an inner longitudinal channel adjacent to and communicating ...


8
James N Britton: Subsea clamping apparatus. Wayne Graham & Associates International, Darryl M Springs, November 10, 1987: US04705331 (49 worldwide citation)

A self-actuating clamp for attachment to a structural member in a subsea environment is disclosed. The clamp includes a housing having spaced side members, a transverse compression plate mounted between the members across the top of the housing and external accessory mounting surfaces. A pair of opp ...


9
Mathew G Schmidt, Peter C Masak, Paul B Rhodes: Method and apparatus for measuring the quality of a cement to a casing bond. Western Atlas International, Darryl M Springs, February 18, 1992: US05089989 (44 worldwide citation)

A new "radial" cement bond instrument is disclosed for measuring the quality of cement to casing bond. The instrument is capable of measuring the quality of the cement bond both vertically and circumferentially. Four arrays of sectored transmitters and receivers are arranged longitudinally along the ...


10
Milton E Cram, Thomas A Janes: Time domain electromagnetic well logging sensor including arcuate microwave strip lines. Western Atlas International, Darryl M Springs, May 20, 1997: US05631562 (41 worldwide citation)

An electromagnetic well logging tool for imaging the electrical characteristics of a borehole. A tool inserted into the borehole includes the appropriate mechanical apparatus to align a plurality of transmission lines adjacent to the borehole wall without requiring direct electrical contact. Electri ...