Mark A Brady

US Patent:

6569814, May 27, 2003

Filed:

Apr 20, 2000

Appl. No.:

09/552853

Inventors:

Mark E. Brady - Sugar Land TX
Wayne W. Frenier - Katy TX
Palathinkara S. Vinod - Poteau OK

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

C09K 702

US Classification:

507201, 507241, 507244, 507925

Abstract:

The Invention relates to novel fluids and techniques to optimize/enhance the production of hydrocarbon from subterranean formations (e. g. , âcompletion fluidsâ), in particular, fluids and techniques are disclosed and claimed which remove wellbore damage and near-wellbore damage in the form of coating formed from drilling and production-related operations (âfiltercakeâ); the techniques can be applied either by themselves or in conjunction with other completion operations, such as gravel packing; preferred embodiments are chelating agent and enzyme systems in a viscoelastic surfactant (VES) matrix.

US Patent:

6631764, Oct 14, 2003

Filed:

Feb 6, 2001

Appl. No.:

09/778133

Inventors:

Mehmet Parlar - Sugar Land TX
Colin J. Price-Smith - Missouri City TX
Raymond J. Tibbles - Missouri City TX
Shrihari Kelkar - Stafford TX
Mark E. Brady - Sugar Land TX
Elizabeth W. A. Morris - Aberdeen, GB

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

E21B 4304

US Classification:

166278, 166300, 166312

Abstract:

A method of gravel packing a wellbore which has at least one aperture therein that provides a fluid flow path between the wellbore and an adjacent subterranean formation. At least a part of the formation adjacent to the open hole has a filter cake coated thereon that comprises a water and oil emulsion. The method of gravel packing comprises injecting into the wellbore a gravel pack composition that comprises gravel and a carrier fluid. The carrier fluid comprises an aqueous liquid having a pH that is outside the range at which the filter cake emulsion is stable. The aqueous liquid is present in an amount effective to invert the water in oil emulsion in the filter cake when the carrier fluid comes into contact with the filter cake. As a result, gravel is deposited at or adjacent to the aperture in the wellbore and some of the filter cake is removed. The remainder of the filter cake and the carrier fluid can be broken simultaneously by contact with a breaker fluid that contains at least one of a surfactant and a mutual solvent.

US Patent:

6762154, Jul 13, 2004

Filed:

Jul 30, 2001

Appl. No.:

09/918264

Inventors:

Bernhard Lungwitz - Stafford TX
Mark E. Brady - Sugar Land TX
Sylvie Daniel - Sugar Land TX
Mehmet Parlar - Sugar Land TX
Colin J. Price-Smith - Missouri City TX
Elizabeth Morris - Aberdeen, GB

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

C09K 702

US Classification:

507131, 507141, 507145, 507135, 507134, 507240, 507241, 507244, 507252, 507259, 507267, 507276, 507277, 507922, 507927, 166308, 166278, 166312

Abstract:

Present invention relates to high brine carrier fluid, said carrier fluid selected from the group consisting of organic acids, organic acid salts, inorganic salts and combination of one or more organic acids or organic acid salts, a co-surfactant and an amount of a zwitterionic surfactant. The invention also relates to methods of treating a subterranean wellbore, including drilling, hydraulic fracturing, gravel placement, scale removing, mud cake removing, using said high brine carrier fluid.

US Patent:

6978838, Dec 27, 2005

Filed:

Mar 25, 2003

Appl. No.:

10/249235

Inventors:

Mehmet Parlar - Sugar Land TX, US
Mark Brady - Sugar Land TX, US
Liz Morris - Aberdeen, GB

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

E21B037/06

US Classification:

166311, 166304, 507201, 507269, 507277

Abstract:

A method is given for completing an interval of an open-hole injection well penetrating a subterranean formation when the interface between the wellbore and the formation includes a zone invaded by a filter cake that includes bridging materials and other embedded solid materials. The method includes the steps of injecting a clean-up fluid and contacting it with the filtercake for a period of time sufficient to loosen some of the other solids embedded in the filter cake; removing the loosened solids by a high-rate displacement fluid containing suspending additives; and then injecting a dissolving fluid containing a diverter and an effective amount of a salt or acid capable of dissolving the bridging material.

US Patent:

7148184, Dec 12, 2006

Filed:

Aug 27, 2003

Appl. No.:

10/649055

Inventors:

Keng Chan - Sugar Land TX, US
Mark Brady - Sugar Land TX, US
Christopher Fredd - Missouri City TX, US

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

C09K 8/78
E21B 43/16

US Classification:

507241, 507260, 507267, 507277, 507933, 166300, 166307

Abstract:

A method is given for diverting acids in matrix acidizing and acid fracturing. The acids are diverted with a diverting agent that is an energized or foamed acidic viscoelastic surfactant system that contains a viscoelastic surfactant that gels and increases in viscosity when the acid in the foamed acidic viscoelastic surfactant system is spent. The method provides a synergistic combination of the diverting capabilities of foams and the diverting capabilities of viscoelastic gel systems. The resistance to flow of the gelled foamed viscoelastic surfactant system is greater than expected from a foam or a viscoelastic gel system alone.

US Patent:

7427584, Sep 23, 2008

Filed:

Sep 24, 2002

Appl. No.:

10/253962

Inventors:

Wayne Frenier - Katy TX, US
Mark Brady - Sugar Land TX, US

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

C09K 8/528
E21B 33/00
E21B 37/00
E21B 37/08
C09K 8/60

US Classification:

507241, 507260, 507261, 507922, 507927, 507928, 166312

Abstract:

Treating compositions containing mutual solvents suitable for forming and maintaining single-phase aqueous fluid treating compositions containing very high concentrations of acids and/or chelating agents are described. Methods of use of these treating compositions for dissolving and removing scale and formation matrix material in oil-field treatments such as stimulation and remediation are given.

Author:

Mark Brady

ISBN #:

0861713559