Mark W Duhon

US Patent:

7287589, Oct 30, 2007

Filed:

Oct 5, 2004

Appl. No.:

10/711785

Inventors:

Brenden M. Grove - Missouri City TX, US
Mark C. Duhon - Sugar Land TX, US
Lawrence A. Behrmann - Houston TX, US
Claude D. Jones - Sugar Land TX, US

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

E21B 43/25

US Classification:

166297, 166 551, 166162, 166311, 175 454

Abstract:

A well treatment system of the present invention includes a housing forming a sealed surge chamber, and a surge charge disposed within the sealed surge chamber, wherein the surge charge is adapted upon activation to penetrate the housing and to not penetrate material exterior of the housing. Fluid communication is created between the surge chamber and the wellbore when the housing is penetrated by the surge charge. The penetration permits wellbore fluid to flow quickly into the surge chamber. Fluid flow into the surge chamber may enhance a surge of flow from the formation into the wellbore.

US Patent:

7347279, Mar 25, 2008

Filed:

Feb 6, 2004

Appl. No.:

10/708075

Inventors:

Haoming Li - Missouri City TX, US
Mark C. Duhon - Sugar Land TX, US
Steven W. Henderson - Katy TX, US

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

E21B 43/116

US Classification:

175 46, 166 55, 166297

Abstract:

An adapter is provided for holding and mounting a shaped charge having a non-standard size into a standard loading tube of a hollow carrier gun. The adapter may include a housing assembly having an interior bore to hold a relatively small shaped charge and an exterior surface sized for mounting in a standard loading tube via a standard jacket. Alternatively, the adapter may include an improved jacket having interior ribs for supporting a relatively small shaped charge and an exterior surface for mounting the shaped charge in a standard loading tube of a relatively large gun.

US Patent:

7409993, Aug 12, 2008

Filed:

Nov 20, 2006

Appl. No.:

11/561641

Inventors:

Chenghua Han - Sugar Land TX, US
Bennie Gill - Fulshire TX, US
Mark C. Duhon - Sugar Land TX, US
Robert Ferrence - Sugar Land TX, US
Ronald Lutz - Deer Park TX, US

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

E21B 43/117

US Classification:

166297, 166 50, 166 551, 175 451

Abstract:

A weight spacer apparatus has a carrier which is tubular in shape and a spacer tube which is also tubular in shape for insertion into the carrier. The weight spacer apparatus also has a plurality of weight bars which may be inserted into the spacer tube after the spacer tube is inserted into the carrier and which are also removable from the spacer tube. In one embodiment, a weight tray is inserted into the spacer tube for receiving the weight bars, and the weight tray may be fabricated from half-round tubing with a welded plate to cover the diametric opening. In another embodiment, a center plate is attached inside the spacer tube along the length of the spacer tube to divide the spacer tube into first and second compartments.

US Patent:

7428921, Sep 30, 2008

Filed:

Dec 12, 2006

Appl. No.:

11/609425

Inventors:

Brenden M. Grove - Missouri City TX, US
Mark C. Duhon - Sugar Land TX, US
Lawrence A. Behrmann - Houston TX, US
Claude D. Jones - Sugar Land TX, US

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

E21B 43/117

US Classification:

166 551, 166 63

Abstract:

A well treatment system of the present invention includes a housing forming a sealed surge chamber, and a surge charge disposed within the sealed surge chamber, wherein the surge charge is adapted upon activation to penetrate the housing and to not penetrate material exterior of the housing. Fluid communication is created between the surge chamber and the wellbore when the housing is penetrated by the surge charge. The penetration permits wellbore fluid to flow quickly into the surge chamber. Fluid flow into the surge chamber may enhance a surge of flow from the formation into the wellbore.

US Patent:

7431075, Oct 7, 2008

Filed:

Sep 15, 2005

Appl. No.:

11/162576

Inventors:

James E. Brooks - Manvel TX, US
Philip Kneisl - Pearland TX, US
Alexander F. Zazovsky - Houston TX, US
Mark C. Duhon - Sugar Land TX, US
Alfredo Fayard - Sugar Land TX, US

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

E21B 43/263

US Classification:

166 55, 89 115, 1022755, 1022756

Abstract:

A propellant assembly for fracturing a formation around a well includes a propellant and a detonating cord wrapped around the propellant, the detonating cord to ignite the propellant upon detonation of the detonating cord. Alternatively, the propellant can include a substantially central axial bore, with the propellant having a plurality of axial slots extending radially outwardly from the axial bore toward the outer surface of the propellant. A detonating cord is arranged within the axial bore of the propellant.

US Patent:

7455104, Nov 25, 2008

Filed:

May 30, 2001

Appl. No.:

09/871240

Inventors:

Mark C. Duhon - Sugar Land TX, US
Simon L. Farrant - Houston TX, US
Manish Kothari - San Mateo CA, US
John M. Corben - Clamart, FR

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

E21B 36/00
E21B 43/10

US Classification:

166 57, 166302, 166206, 166207

Abstract:

A method and apparatus includes providing an element formed of a superplastic material to perform a predetermined downhole task. In another arrangement, a method and apparatus includes a flowable element and a deformable element that can be expanded by flowing the flowable element.

US Patent:

7481166, Jan 27, 2009

Filed:

Mar 28, 2006

Appl. No.:

11/308464

Inventors:

Chenghua Han - Sugar Land TX, US
Mark C. Duhon - Sugar Land TX, US

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

F42B 3/00
F42D 3/00

US Classification:

102312, 102313, 102318, 102704

Abstract:

An apparatus for use in a wellbore comprises a heat insulating container having an inner space and having a structure defining a hollow containing a vacuum. The apparatus further comprises a reflective layer arranged on a surface of the heat insulating container to reflect heat for reducing radiated heat originated in the wellbore from reaching the inner space. Also, a signal-activated detonator is provided in the inner space of the heat insulating container.

US Patent:

7661474, Feb 16, 2010

Filed:

Mar 24, 2006

Appl. No.:

11/308441

Inventors:

Jerry D. Campbell - Katy TX, US
Mark C. Duhon - Sugar Land TX, US
Bennie Gill - Fulshear TX, US
Geir Melhus - Randaberg, NO
Wayne Nivens - Richmond TX, US
Kjell M. Randeberg - Randaberg, NO

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

E21B 17/00
E21B 17/02
E21B 17/04
E21B 17/042

US Classification:

1662426

Abstract:

A connector assembly for interconnecting wellbore tools to form a tool string include a first adapter having a tool end connectable to a first wellbore tool and an alignment end, a mandrel that has a pin end and an opposing end, the pin end being matable with the alignment end of the first adapter, a second adapter having an adapter end connectable to a second wellbore tool and a second end connected to the opposing end the mandrel and a sleeve that has a first open end and a second open end, the sleeve is moveably disposed over and in connection with the mandrel and the second open end is connectable with the alignment end of the first adapter for interconnecting the first adapter and the second adapter. The connector assembly facilitates hands-free make-up and break-out of tool strings.