Richard A Coates

Author:

Richard Coates

ISBN #:

0713456256

Author:

Richard Coates

ISBN #:

0889460779

US Patent:

7554881, Jun 30, 2009

Filed:

Jul 31, 2007

Appl. No.:

11/831093

Inventors:

Richard T. Coates - Middlebury CT, US
Steve A. Horne - Lafayette CA, US

Assignee:

WesternGeco L.L.C. - Houston TX

International Classification:

G01L 19/14
G01V 1/00

US Classification:

367 21, 734321

Abstract:

A technique includes obtaining seismic data, which was acquired during a seismic survey in seawater. The technique includes based on the seismic data, determining a conductivity of the seawater and processing data obtained from an electromagnetics-based survey based on the determined conductivity.

US Patent:

7578359, Aug 25, 2009

Filed:

Dec 22, 2006

Appl. No.:

11/615526

Inventors:

Richard Coates - Middlebury CT, US
Chung Chang - Lexington MA, US
Iain Cooper - Sugarland TX, US
Marcel Boucher - Houston TX, US

Assignee:

Schlumberger Technology Corporation - Cambridge MA

International Classification:

E21B 47/14

US Classification:

175 40, 175 50, 1661771, 181106, 181113

Abstract:

An acoustic source for delivering acoustic energy to a ground formation, particularly a rock formation, the source including (a) a solenoid to generate an electromagnetic field, (b) a bullet positioned within the influence of the electromagnetic field, (c) a casing surrounding and enclosing the solenoid and bullet so that both the solenoid and the bullet are protected from the surrounding environment, in use the solenoid being electrically energized to cause the bullet to be propelled by electromagnetic force so that the bullet impacts an anvil portion of the casing in contact with the ground formation is provided.

US Patent:

7874362, Jan 25, 2011

Filed:

Mar 26, 2007

Appl. No.:

11/691117

Inventors:

Richard Timothy Coates - Middlebury CT, US
Douglas E. Miller - Sandy Hook CT, US
Philip Sullivan - Bellaire TX, US
Francois Auzerais - Houston TX, US
Tarek M. Habashy - Burlington MA, US

Assignee:

Schlumberger Technology Corporation - Cambridge MA

International Classification:

E21B 47/09

US Classification:

166299, 1662551, 16625001

Abstract:

Tubewaves are used to transmit an indication of the depth at which a condition is detected in a well. In particular, the depth is calculated based on the difference in arrival time at the surface of a first tubewave which propagates directly upward in the borehole and a second tubewave which initially travels downward and is then reflected upward. The tubewaves may be generated by a canister designed to implode at a certain pressure. The canister is carried downhole by gravity and the fluid being pumped. At a depth at which its pressure tolerance is exceeded, it implodes and generates the tubewaves. An analyzer at the surface detects the tubewaves and generates a pressure versus depth profile of the well. Canisters may be acoustically tagged in order to generate tubewaves having particular frequency and amplitude characteristics. Canisters may also be configured to produce multiple implosions.

US Patent:

8605542, Dec 10, 2013

Filed:

May 26, 2010

Appl. No.:

12/788270

Inventors:

Richard T. Coates - Middlebury CT, US
Douglas E. Miller - Boston MA, US
Arthur H. Hartog - Winchester, GB
Colin A. Wilson - Tolworth, GB
Dominic Brady - Winchester, GB
Henry Menkiti - Twickenham, GB
Francois M. Auzerais - Boston MA, US
Ian David Richard Bradford - Cambridge, GB

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

G01V 1/48

US Classification:

367 37, 367 25

Abstract:

A fiber optic distributed vibration system for detecting seismic signals in an earth formation is provided. The system includes a fiber optic cable deployed in a borehole that extends into the earth formation and which is configured to react along its length to a seismic wave incident on the fiber optic cable from outside the borehole. An optical source launches an optical signal into the fiber optic cable while the seismic wave is incident thereon. A receiver detects coherent Rayleigh noise (CRN) produced in response to the optical signal. A processing circuit processes the detected CRN signal to determine characteristics of the earth formation.

US Patent:

20120298421, Nov 29, 2012

Filed:

May 26, 2011

Appl. No.:

13/115988

Inventors:

RICHARD T. COATES - MIDDLEBURY CT, US
BENOIT FROELICH - MARLY LE ROI, FR

Assignee:

SCHLUMBERGER TECHNOLOGY CORPORATION - Sugar Land TX

International Classification:

E21B 47/00

US Classification:

175 50

Abstract:

An influx of gas into a borehole can be detected by deploying a string of acoustic sensors along a drill string or other conduit to monitor an acoustic characteristic, such as velocity or attenuation, of the drilling fluid present in the borehole. In response to detection of acoustic pulses propagating in the drilling fluid, the acoustic sensors generate signals that are representative of acoustic characteristics if the drilling fluid. Based on the generated signals, a data acquisition system can determine whether a change in the monitored acoustic characteristic is indicative of a gas influx.