Gary S Crews

US Patent:

6961283, Nov 1, 2005

Filed:

Mar 19, 2003

Appl. No.:

10/391960

Inventors:

Russell Kappius - Littleton CO, US
Gary Crews - Plano TX, US

Assignee:

Input/Output, Inc. - Stafford TX

International Classification:

G01V001/36

US Classification:

367 43, 38 45, 181112

Abstract:

The present invention provides an adaptive filtering method for substantially eliminating ground roll noise encountered during seismic data acquisition. An apparatus for acquiring seismic data is provided that includes an adaptive filtering circuit coupled to a multi-axis sensor device.

US Patent:

7012853, Mar 14, 2006

Filed:

Oct 18, 2004

Appl. No.:

10/967728

Inventors:

James Iseli - Allen TX, US
Daniel Schumacher - Richardson TX, US
David Bristow - Sugar Land TX, US
Allan Johnson - Bellville TX, US
Greyson Knapp - Houston TX, US
Gary Crews - Plano TX, US
Charles Kelly - Lewisville TX, US
Robert Cronan - Frisco TX, US
Andras Feszthammer - Stafford TX, US

Assignee:

Input/Output, Inc. - Stafford TX

International Classification:

G01V 1/16

US Classification:

367 78, 367 76, 367 63

Abstract:

The present invention provides a method and apparatus of acquiring and processing seismic data. One or more controllers are each coupled to seismic sensors and to each other to form a network of data acquisition units. A main controller is coupled to a crossline unit via a cable comprising a synchronizing conductor and one or more power/data conductors. Commands and data are packaged such that multiple routings are possible without affecting final calculations. Each crossline unit is capable of accepting a fiber optic input, a wire input or a combination.

US Patent:

20030128627, Jul 10, 2003

Filed:

Sep 9, 2002

Appl. No.:

10/237469

Inventors:

James Iseli - Allen TX, US
Daniel Schumacher - Richardson TX, US
David Bristow - Sugar Land TX, US
Allan Johnson - Bellville TX, US
Greyson Knapp - Houston TX, US
Gary Crews - Plano TX, US
Charles Kelly - Lewisville TX, US
Robert Cronan - Frisco TX, US
Andras Feszthammer - Stafford TX, US

Assignee:

Input/Output, Inc. - Stafford TX

International Classification:

G01V001/00

US Classification:

367/060000

Abstract:

The present invention provides a method and apparatus of acquiring and processing seismic data. One or more controllers are each coupled to seismic sensors and to each other to form a network of data acquisition units. A main controller is coupled to a crossline unit via a cable comprising a synchronizing conductor and one or more power/data conductors. Commands and data are packaged such that multiple routings are possible without affecting final calculations. Each crossline unit is capable of accepting a fiber optic input, a wire input or a combination.

US Patent:

53416708, Aug 30, 1994

Filed:

Apr 5, 1993

Appl. No.:

8/042905

Inventors:

Robert A. Brook - Richardson TX
Gary A. Crews - Plano TX
Susan M. Perrell - Seal Beach CA

Assignee:

Atlantic Richfield Company - Los Angeles CA

International Classification:

G01M 324

US Classification:

73 405A

Abstract:

A method for locating leak from a tank containing a fluid using acoustic signals by adaptively correlating the phase of the acoustic signals to determine a first set of possible leak locations and subsequently correlating acoustic signals from a second set of locations on the tank to determine a second set of possible leak locations and converging the first and second set of possible leak locations to determine the location of the leak.

US Patent:

48902640, Dec 26, 1989

Filed:

Mar 21, 1988

Appl. No.:

7/171113

Inventors:

Gary A. Crews - Plano TX
David R. Martinez - Plano TX

Assignee:

Atlantic Richfield Company - Los Angeles CA

International Classification:

G01V 128

US Classification:

367 45

Abstract:

A seismic exploration method and apparatus in which non-uniformly distributed noise signals generated by wind, machinery, or surface wave propagation and received by the sensing geophones are cancelled by the utilization of adaptive filter processing. A number of horizontally sensitive geophones are disposed along the surface of the earth to detect surface waves induced in the surface of the earth at a plurality of spaced locations throughout an entire area of investigation. Similarly, a number of wind noise and mechanical noise detectors are utilized to detect airwave and noise signals at a plurality of locations throughout the area of investigation. The outputs of the surface wave detectors, the wind noise detectors and the mechanical noise detectors may then be utilized in conjunction with an adaptive filter to effectively cancel the effects of such interferences on reflected seismic wave signals at multiple locations throughout the area of investigation so that non-uniformly distributed noise signals may be accurately eliminated.

US Patent:

49301101, May 29, 1990

Filed:

Jul 13, 1988

Appl. No.:

7/218662

Inventors:

Douglas L. Bremner - Richardson TX
Gary A. Crews - Plano TX
James A. Musser - Plano TX

Assignee:

Atlantic Richfield Company - Los Angeles CA

International Classification:

G01V 120
G01V 136

US Classification:

367 56

Abstract:

A method for conducting a three-dimensional subsurface seismic survey utilizing a plurality of seismic receivers arranged in an orthogonally uniform pattern is disclosed. A predetermined pattern of shotpoints is arranged such that every point in the surface area of interest is sampled over a desired range of offsets and a full range of azimuths. The utilization of shotpoints outside the pattern of receivers allows examination of a subsurface area which is greater than the area of the pattern itself. The output of each receiver in the pattern is simultaneously recorded for seismic energy applied to the surface of the earth. Where the area of interest is quite large, a multitude of patterns of seismic receivers may be utilized to ensure coverage of the entire area.

US Patent:

44995652, Feb 12, 1985

Filed:

Jan 10, 1980

Appl. No.:

6/110956

Inventors:

James E. Fix - Richardson TX
Gary A. Crews - Plano TX

Assignee:

Atlantic Richfield Company - Los Angeles CA

International Classification:

G01V 000

US Classification:

367 49

Abstract:

A receiver array for detecting seismic reflections is composed of geophones of several different natural frequencies divided into subarrays having lengths compatible with the natural frequencies of their geophones and the seismic wavelengths at the recording site. This system provides both frequency and spatial filtering at the sensors so as to enhance the signal-to-noise ratio of broad-band seismic signals.

US Patent:

49706969, Nov 13, 1990

Filed:

Mar 16, 1990

Appl. No.:

7/495250

Inventors:

Gary A. Crews - Plano TX
James A. Musser - Plano TX

Assignee:

Atlantic Richfield Company - Los Angeles CA

International Classification:

G01V 120
G01V 136

US Classification:

367 15

Abstract:

A method for conducting a three-dimensional subsurface seismic survey utilizing a plurality of seismic receivers arranged in an orthogonally uniform pattern is disclosed. A predetermined pattern of shotpoints is arranged such that every point in the surface area of interest is sampled over a desired range of offsets and a full range of azimuths. The utilization of shotpoints outside the pattern of receivers allows examination of a subsurface area which is greater than the area of the pattern itself. The output of each receiver in the pattern is simultaneously recorded for seismic energy applied to the surface of the earth. Where the area of interest is quite large, a multitude of patterns of seismic receivers may be utilized to ensure coverage of the entire area. In a marine application of the present invention a plurality of seismic receivers are arranged in an orthogonally uniform pattern under a body of water or by utilizing multiple parallel marine streamers towed by one or more tow boats. One or more source boats are then utilized to produce a plurality of shotpoints such that every point in the subsurface area of interest is sampled over a desired range of offsets and azimuths.