Bruno J Drochon

US Patent:

7748452, Jul 6, 2010

Filed:

Feb 19, 2008

Appl. No.:

12/033630

Inventors:

Philip F Sullivan - Bellaire TX, US
Gary John Tustin - Cambridge, GB
Bruno Drochon - Missouri City TX, US
Marie Noelle Dessinges - Paris, FR
Gregory Kubala - Houston TX, US
Christelle Vatry - Notre Dame de Message, FR

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

E21B 33/13
E21B 43/267

US Classification:

166279, 1662802, 166281, 166293, 1663085

Abstract:

A method of plugging a fracture in a subterranean formation which includes placing into the fracture a composition comprising microspheres or microbeads, wherein the microspheres are created by surface crosslinking of droplets in a water-in-water emulsion. Such microspheres may form a filter cake in the formation. The microspheres may include a chemical agent to be released when the microspheres dissolve.

US Patent:

7784541, Aug 31, 2010

Filed:

Jul 16, 2008

Appl. No.:

12/174137

Inventors:

Ryan Hartman - Arlington MA, US
Mohan K. R. Panga - Stafford TX, US
Bruno Drochon - Houston TX, US
John W. Still - Katy TX, US

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

E21B 43/267
E21B 43/27

US Classification:

1662801, 166283, 166300, 166307, 1663082, 1663083, 507260, 507261, 507923, 507924

Abstract:

A system includes a wellbore in fluid communication with a formation of interest and a fracturing slurry include a carrier fluid with a low amount of a viscosifier, an amount of proppant including a first average particle size between about 200 and 2000 μm, an amount particulates including a second average particle size between about three and ten times smaller than the first average particle size, and a third amount of particulates having a third average particle size smaller than the second average particle size. A sum of all of the particulates in the fracturing slurry exceed about 16 pounds per gallon of the carrier fluid. They system further includes a pumping device that creates a propped fracture in the formation of interest with the fracturing slurry, and a removal agent that removes the second amount of particulates and/or the third amount of particulates from the propped fracture.

US Patent:

7789146, Sep 7, 2010

Filed:

May 21, 2008

Appl. No.:

12/124910

Inventors:

Mohan K. R. Panga - Stafford TX, US
Balkrishna Gadiyar - Katy TX, US
Ryan Hartman - Arlington MA, US
Bruno Drochon - Houston TX, US
John W. Still - Katy TX, US
Bryan Stamm - Houston TX, US

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

E21B 43/04

US Classification:

166278, 166 51, 166300, 507925

Abstract:

A method is disclosed for low damage gravel packing. The method includes combining a carrier fluid, a first amount of particulates, and a second amount of particulates into a slurry. The first amount of particulates have a first average size distribution and the second amount of particulates have a second average size distribution, and the first average size distribution is at least three times larger than the second average size distribution. The slurry includes particles which are at least partially degradable material, and with reactive solid constituents. The reactive solid reacts with the degradable material and/or a hydrolysis product of the degradable material. The method further includes positioning a screen in a wellbore, and circulating the slurry through the wellbore such that the first amount of particulates and the second amount of particulates are deposited on an outer surface of the screen.

US Patent:

7896076, Mar 1, 2011

Filed:

Dec 27, 2007

Appl. No.:

11/965285

Inventors:

Bruno Drochon - Missouri City TX, US

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

E21B 33/13
C09K 8/467

US Classification:

166293, 166300, 106724

Abstract:

Low-density cement slurries for cementing subterranean wells are described that comprise alkali swellable polymers as thickening agents that provide slurry stability. The polymers are preferably added as liquid latex dispersions, and may also comprise a surfactant that is present at a concentration below its critical micelle concentration. Particular utility is observed when the solid-volume fraction (SVF) of the slurry is less than about 40 percent. Also described are a method for increasing the viscosity of a cement slurry and methods for cementing a subterranean well.

US Patent:

7923415, Apr 12, 2011

Filed:

Aug 31, 2009

Appl. No.:

12/551081

Inventors:

Mohan K. R. Panga - Stafford TX, US
Bruno Drochon - Houston TX, US
Isabelle Couillet - Kuala Lumpur, MY
Juan-Carlos Santamaria - Houston TX, US
Peter J. Photos - Houston TX, US
John W. Still - Katy TX, US

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

C09K 8/68
C09K 8/60
E21B 43/16

US Classification:

507203, 1663051, 507103, 507117, 507219, 507260

Abstract:

The invention discloses a method of treating a subterranean formation of a well bore: providing a treatment fluid made of: a fluid; a particulate material, and a viscosifier material; wherein the viscosifier material is inactive in a first state and is able to increase viscosity of the treatment fluid when in a second state; introducing the treatment fluid into the wellbore; and providing a trigger able to activate the viscosifier material from first state to second state.

US Patent:

7998909, Aug 16, 2011

Filed:

Aug 23, 2007

Appl. No.:

11/844093

Inventors:

Lijun Lin - Sugar Land TX, US
Carlos Abad - Richmond TX, US
Bruno Drochon - Missouri City TX, US
Gregory Kubala - Houston TX, US
Laura Schafer - Kuala Lumpur, MY
Alejandro Pena - Ciudad Ojeda, VE
Ramsey Buoy - Pasadena TX, US

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

C09K 8/60

US Classification:

507254, 507202, 507211, 507217, 507219, 507267, 507271, 507273, 507276, 1663081

Abstract:

A wellbore treatment fluid is formed from an aqueous medium, a gas component, a viscosifying agent, and a surfactant. The surfactant is represented by the chemical formula:[R—(OCHCH)—O—YO]Xwherein R is a linear alkyl, branched alkyl, alkyl cycloaliphatic, or alkyl aryl group; O is an oxygen atom; Y is either a sulfur or phosphorus atom; m is 1 or more; n is a integer ranging from 1 to 3; p is a integer ranging from 1 to 4; q is a integer ranging from 0 to 1; and X is a cation. The fluid may be used in treating a subterranean formation penetrating by a wellbore by introducing the fluid into the wellbore. The fluid may be used in fracturing a subterranean formation penetrated by a wellbore by introducing the fluid into the formation at a pressure equal to or greater than the fracture initiation pressure.

US Patent:

8008234, Aug 30, 2011

Filed:

Jun 16, 2010

Appl. No.:

12/816473

Inventors:

Mohan K. R. Panga - Stafford TX, US
Balkrishna Gadiyar - Katy TX, US
Ryan Hartman - Arlington MA, US
Bruno Drochon - Houston TX, US
John W. Still - Katy TX, US
Bryan Stamm - Houston TX, US

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

C09K 8/50
E21B 43/04

US Classification:

507203, 106 33, 166 51, 166278, 523130, 523131

Abstract:

A gravel packing system, method and slurry. The system comprises a blending device to prepare a slurry comprising a carrier fluid suspending first, second and third particulates, wherein the carrier fluid comprises a brine and less than about 2. 4 g/L (20 lb per 1000 gallons) of a viscosifier, and wherein the sum of the mass of the particulates is greater than about 2. 4 kg/L (20 pounds per gallon), wherein the first average particle volume is between 27 and 3375 times larger than the second average particle volume, which in turn is between 27 and 3375 times larger than the third average particle volume. The system can also include tubing to position a screen in the wellbore and a slurry pump to circulate the slurry from the blending device in the wellbore in any order such that the particulates are deposited in the screen annulus to form a gravel pack.

US Patent:

8091642, Jan 10, 2012

Filed:

Sep 25, 2006

Appl. No.:

12/067823

Inventors:

Véronique Barlet-Gouedard - Chatenay Malabry, FR
Simon James - Le Plessis-Robinson, FR
Bruno Drochon - Missouri City TX, US
Bernard Piot - Montrouge, FR
Caritey Jean-Philippe - Le Plessis Robinson, FR

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

E21B 33/13

US Classification:

166293, 166276

Abstract:

A cement composition resistant to carbon dioxide includes a hollow element for trapping carbonation products. The hollow element can be hollow spherical or quasi spherical particles including cenospheres, sodium-calcium-borosilicate glass microspheres, silica-alumina microspheres, or a combination thereof. Or the hollow element may be a spherical or quasi spherical void made in the set cement, for example by foaming the cement composition with a gas such as air, nitrogen or a combination thereof. The composition may be used to cement a subterranean well in which carbon dioxide is injected, stored or produced.