Graham M Watson

US Patent:

6394200, May 28, 2002

Filed:

Sep 11, 2000

Appl. No.:

09/658857

Inventors:

Graham R. Watson - Houston TX
Steven James Hart - Bath, GB

Assignee:

Camco International (U.K.) Limited

International Classification:

E21B 1026

US Classification:

175385, 175391, 175399, 175408

Abstract:

The present invention is a bi-center drill bit designed to drill out the cement and other material in the casing and then proceed to drill out the full gauge drilling diameter borehole with a diameter greater than the inside of the casing. The bi-center drill bit is configured with non-drilling bearing elements that contact with the casing when the bit is drilling the cement without allowing the gauge cutting elements of the bi-center drill bit to contact the casing. The bi-center drill bit also has a cutting element configuration which prevents reverse scraping of the cutting elements when drilling both the cement and the formation.

US Patent:

6575251, Jun 10, 2003

Filed:

Jun 13, 2001

Appl. No.:

09/880376

Inventors:

Graham Watson - Houston TX
Gary Hurst - Lake Jackson TX
H. Steven Bissonnette - Sugar Land TX
Geoffrey Kernick - Aberdeen, GB
Colin Price-Smith - Missouri City TX

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

E21B 33127

US Classification:

166387, 166133, 166183

Abstract:

The present invention discloses apparatus and methods for use in wellbores that comprise an inflatable element. The inflatable element is adapted for inflation by gravel. One embodiment of the invention is a method of sealing an annulus in a well that comprises expanding the inflatable element with a gravel laden slurry. The inflatable element comprises a passageway communicating between an exterior and an interior of the inflatable element. The inflatable element is capable of being connected to a sand screen and the inflatable element can be inflated with the gravel laden slurry during a gravel packing of the well.

US Patent:

6752206, Jun 22, 2004

Filed:

Jul 20, 2001

Appl. No.:

09/910626

Inventors:

Graham Watson - Houston TX
Geoffrey R. Kernick - Aberdeen, GB
Colin J. Price-Smith - Missouri City TX
Mehmet Parlar - Sugar Land TX

Assignee:

Schlumberger Technology Corporation - Sugarland TX

International Classification:

E21B 4304

US Classification:

166278, 166228, 166 51

Abstract:

The present invention discloses a system using a conduit run into a well on a service string. In one embodiment the conduit includes outlets along its length to permit a sand control treatment to exit the conduit along the length of the conduit and distribute the sand control treatment along the length of the conduit. The conduit can have a plurality of such outlets spaced to provide an even distribution of the sand control treatment. The conduit can be attached to the delivery tubing (such as coiled tubing or service string tubing) via a releasable connector. The conduit is deployed on the delivery tubing and connector (and is in fluid communication therewith) in the well adjacent to an area to be treated. The sand control treatment is pumped into the well. Once the sand control treatment is complete, the releasable connector is released to disconnect the conduit from the delivery tubing and the delivery tubing is removed from the well.

US Patent:

8151883, Apr 10, 2012

Filed:

Jun 6, 2010

Appl. No.:

12/794748

Inventors:

Ricardo Gomez Simancas - Jakarta, ID
Bryan Stamm - Houston TX, US
Graham R. Watson - Sugar Land TX, US
Tom Saunders - Sugar Land TX, US

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

E21B 43/04

US Classification:

166278, 166 51

Abstract:

A stimulation technique is provided for use in an open hole well. The stimulation technique utilizes a system which comprises one or more isolation devices positioned to isolate desired regions of the open hole well. At least one release mechanism is used to provide controlled release of stimulation material to a desired wellbore region of the open hole well. Additionally, a protection mechanism cooperates with each release mechanism to prevent undesirable contact between stimulation material and the surrounding wellbore wall of the open hole well. In many applications, the entire system is deployed and operated during a single trip downhole into the well.

US Patent:

8408300, Apr 2, 2013

Filed:

Feb 15, 2010

Appl. No.:

12/705885

Inventors:

Ricardo Gomez Simancas - Jakarta, ID
Bryan Stamm - Houston TX, US
Graham M. Watson - Sugar Land TX, US
Tom Saunders - Sugar Land TX, US

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

E21B 43/04

US Classification:

166278, 166 51

Abstract:

A stimulation system configured for use in open-hole wells. The system may alternatively or additionally be configured for multi-zone stimulation applications. The system includes assemblies which employ techniques and configurations for isolating recovery screens downhole even without the presence of well casing. In this manner protection may be provided from dowhnole contaminants such as water which might otherwise leak in from adjacent formation layers.

US Patent:

8496055, Jul 30, 2013

Filed:

Oct 16, 2009

Appl. No.:

12/580736

Inventors:

Dexter Myles Mootoo - Houston TX, US
Robert Krush - Sugar Land TX, US
John Whitsitt - Houston TX, US
Adam Charles Vasper - Surrey, GB
Graham Watson - Sugar Land TX, US

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

E21B 43/04

US Classification:

166278, 166 51, 166316, 166205, 166373

Abstract:

A service tool and methods for performing subterranean hydrocarbon services in a wellbore. The service tool can include a body that having an aperture formed therethrough. A valve system can be connected to the body. The valve system can selectively form a flow path between a first portion of the aperture and a second portion of the aperture; a flow path between a first flow port formed through a first portion of the body, the aperture, and the outer diameter of the body; and/or a flow path between a channel formed in a portion of the body, a second flow port formed through a second portion of the body, and the second portion of the aperture.

US Patent:

20100300687, Dec 2, 2010

Filed:

May 26, 2010

Appl. No.:

12/787435

Inventors:

Graham Watson - Sugar Land TX, US
Dinish Patel - Sugar Land TX, US
Tom Saunders - Sugar Land TX, US
Luis Felipe Peixoto - Kalimantan Timur, ID
Ricardo Gomez Simancas - Jakarta, ID
Julien Debard - Houston TX, US

Assignee:

SCHLUMBERGER TECHNOLOGY CORPORATION - SUGAR LAND TX

International Classification:

E21B 43/04

US Classification:

166278, 166 51

Abstract:

A technique facilitates sand control in a wellbore. A lower completion and an upper completion are run downhole into the wellbore and deployed. The lower completion assembly employs a plurality of packers to isolate well zones. The lower completion assembly also has gravel pack ports which are independently opened to enable gravel packing of each individual zone via a tool run downhole. Additionally, the lower completion assembly has a production port in each zone. A shifting tool is employed to open the production ports and to enable production from the well zones.

US Patent:

20120000651, Jan 5, 2012

Filed:

Jun 30, 2010

Appl. No.:

12/827511

Inventors:

Mohan K.R. Panga - Stafford TX, US
Peter J. Photos - El Campo TX, US
Bruno Drochon - Cambridge, GB
John W. Still - Katy TX, US
Mehmet Parlar - Sugar Land TX, US
Balkrishna Gadiyar - Katy TX, US
Dinesh R. Patel - Sugar Land TX, US
Graham M. Watson - Sugar Land TX, US

International Classification:

E21B 43/08
E21B 43/16
E21B 43/26
C09K 8/00

US Classification:

166278, 507200, 1663051, 1663081

Abstract:

A method includes providing a slurry comprising a carrier fluid and a solids mixture, and injecting said slurry in a wellbore wherein the solids mixture comprises at least two volume-averaged particle size distribution (PSD) modes, wherein a first PSD mode comprises solids having a volume-average median size at least three times larger than the volume-average median size of a second PSD mode such that a packed volume fraction (PVF) of the solids mixture exceeds 0.75.

Author:

Graham Watson

ISBN #:

0091744652

Author:

Graham Watson

ISBN #:

0306814013

Author:

Graham Watson

ISBN #:

0306814552

Author:

Graham Watson

ISBN #:

0422733407

Author:

Graham Watson

ISBN #:

0803942532

Author:

Graham Watson

ISBN #:

0803942540

Author:

Graham Watson

ISBN #:

0880112972

Author:

Graham Watson

ISBN #:

1902622170