Mathew K Samuel

US Patent:

6435277, Aug 20, 2002

Filed:

Feb 23, 1999

Appl. No.:

09/256980

Inventors:

Qi Qu - Stafford TX
Erik B. Nelson - Houston TX
Dean M. Willberg - Sugar Land TX
Mathew M. Samuel - Katy TX
Frank F. Chang - Sugar Land TX
Roger J. Card - Paris, FR
Palathinkara S. Vinod - Stafford TX
J. Ernest Brown - Houston TX
Ronnie L. Thomas - Sugar Land TX

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

E21B 4326

US Classification:

166281, 166283, 166309, 507240, 507422

Abstract:

The improved recovery of hydrocarbons from subterranean formations by hydraulically fracturing a subterranean formation is accomplished. Fracturing fluids using a viscosifying surfactant fluid containing viscosifying micelles, for example, wormlike micelles, are useful to improve recovery of hydrocarbons and limit the loss of fracturing fluid into the formation fracture face. The invention further relates to novel fracturing and acidizing methods useful for increasing hydrocarbon production, limiting water production, resisting fracturing fluid loss into the subterranean formation, and reducing the equipment requirements in mixing and pumping fracturing fluid. The action of viscosifying micelles of surfactant in aqueous zones of the subterranean formation diverts fracturing fluid or acid from the aqueous zones to the hydrocarbon-bearing zones and also facilitates the flowback of increased amounts of hydrocarbons once a fractured well is placed back on production. These methods selectively block the pore structure in a water-bearing zone and do not blocking the pore structure of a hydrocarbon zone at the formation face. The step for selectively blocking forms a plug of a viscous fluid containing viscosifying micelles in the pore structure of the water-bearing zone at the formation face.

US Patent:

6637517, Oct 28, 2003

Filed:

Jan 17, 2002

Appl. No.:

10/051842

Inventors:

Mathew M. Samuel - Katy TX
Frank F. Chang - Sugar Land TX
Roger J. Card - Paris, FR
Ronnie L. Thomas - Sugar Land TX

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

E21B 4326

US Classification:

166381, 166294, 166307, 166308, 507923, 507933

Abstract:

The improved recovery of hydrocarbons from subterranean formations by hydraulically fracturing a subterranean formation is accomplished. Fracturing fluids using a viscosifying surfactant fluid containing viscosifying micelles, for example, wormlike micelles, are useful to improve recovery of hydrocarbons and limit the loss of fracturing fluid into the formation fracture face. The invention further relates to novel fracturing and acidizing methods useful for increasing hydrocarbon production, limiting water production, resisting fracturing fluid loss into the subterranean formation, and reducing the equipment requirements in mixing and pumping fracturing fluid. The action of viscosifying micelles of surfactant in aqueous zones of the subterranean formation diverts fracturing fluid or acid from the aqueous zones to the hydrocarbon-bearing zones and also facilitates the flowback of increased amounts of hydrocarbons once a fractured well is placed back on production. These methods selectively block the pore structure in a water-bearing zone and do not blocking the pore structure of a hydrocarbon zone at the formation face. The step for selectively blocking forms a plug of a viscous fluid containing viscosifying micelles in the pore structure of the water-bearing zone at the formation face.

US Patent:

7878246, Feb 1, 2011

Filed:

Nov 26, 2008

Appl. No.:

12/323675

Inventors:

Mathew M. Samuel - Sugar Land TX, US
Yerik Balabatyrov - Kostanai, KZ
Frank F. Chang - Al-Khobar, SA
Martin Griffith - Trincity, TT
Liz Morris - Aberdeen, GB

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

E21B 43/25

US Classification:

166297, 1663051, 166312

Abstract:

The invention provides a method for perforating a well with a perforating fluid comprising a viscoelastic surfactant that essentially stops fluid leak-off after perforation in an overbalanced condition. Another aspect of the invention provides the perforating fluid in itself. The well has a wellbore defined by a generally cylindrical casing in at least a portion of the wellbore (i. e. , the wellbore is cased, although it is not necessary cased in its entire length). The wellbore passes through a subterranean formation that comprises hydrocarbon formation fluids (such as oil and/or gas), at least in certain strata. The method comprises placing a perforating device in a wellbore which includes at least one explosive perforating charge that can be detonated in order to perforate the casing and allow the formation fluids to enter the wellbore. The casing is located between the subterranean formation and the perforating device. A perforating fluid including at least one viscoelastic surfactant is placed in the wellbore between the perforating device and the casing, in at least a portion of the wellbore.

US Patent:

7902124, Mar 8, 2011

Filed:

Aug 21, 2009

Appl. No.:

12/545381

Inventors:

Syed Ali - Sugar Land TX, US
Javier Sanchez Reyes - Katy TX, US
Mathew M. Samuel - Sugar Land TX, US
Francois M. Auzerais - Boston MA, US

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

C09K 8/52
E21B 37/06

US Classification:

507 90, 166304, 1663051, 166307, 1663081, 1663082, 166311, 166312, 507268, 507269, 507277, 507922, 507923, 507927

Abstract:

A method of treating a subterranean formation penetrated by a wellbore of a well having iron-containing components is carried out by introducing a treatment fluid into the wellbore of the well. The treatment fluid is formed from an aqueous solution, a mineral acid, a viscoelastic surfactant gelling agent and corrosion inhibitor system containing at least one of an alkyl, alkenyl, alicyclic or aromatic substituted aliphatic ketone and aliphatic or aromatic aldehyde. The treatment fluid is substantially free of any formic acid or precursor formic acid. In certain embodiments, the corrosion inhibitor system comprises a mixture of at least one of an alkenyl phenone or α,β-unsaturated aldehyde, an unsaturated ketone or unsaturated aldehyde other than the alkenyl phenone and α,β-unsaturated aldehyde, a dispersing agent, an extender and an alcohol solvent. A corrosion inhibitor intensifier may also be used in certain embodiments, which may include a mixture of cuprous iodide and cuprous chloride.

US Patent:

7923414, Apr 12, 2011

Filed:

Aug 4, 2009

Appl. No.:

12/534901

Inventors:

Lijun Lin - Sugar Land TX, US
Leiming Li - Sugar Land TX, US
Mathew M. Samuel - Sugar Land TX, US
Syed Ali - Sugar Land TX, US

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

C09K 8/22
E21B 43/00

US Classification:

507128, 507110, 507117, 507209, 507213, 507219, 507237, 507904

Abstract:

Embodiments of this invention relate to a composition and a method for tailoring the rheology of a fluid for use in the oil field services industry including forming a fluid comprising a tetrakis(hydroxyalkyl) phosphonium salt and a polymer, and exposing the fluid to a temperature of about 20 C. to about 200 C. , wherein a viscosity is observed that is at least about 5 percent different than if no salt were present. Embodiments of this invention also relate to a composition and a method for tailoring the rheology of a fluid for use in the oil field services industry including forming a fluid comprising a tetrakis(hydroxyalkyl) phosphonium salt and diutan and/or guar and/or guar derivatives and/or a combination thereof, and exposing the fluid to a temperature of about 20 C. to about 163 C. , wherein a viscosity is observed that is at least about 5 percent lower than if no salt were present.

US Patent:

7981845, Jul 19, 2011

Filed:

Aug 14, 2009

Appl. No.:

12/541311

Inventors:

Mathew M. Samuel - Sugar Land TX, US
Balkrishna Gadiyar - Katy TX, US
Sai Aung Zaw Min - Yangon, MM

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

C09K 8/60
E21B 43/16

US Classification:

507260, 1663051, 175 65, 507211, 507219, 507267

Abstract:

This relates to a method and composition for forming and utilizing a fluid in the oilfield services industry including exposing a polyacid and/or polyacid derivative to a preparation method, introducing the prepared polyacid and/or polyacid derivative to a fluid to form a treatment fluid, and treating a subterranean formation and/or a wellbore with the treatment fluid, wherein the viscosity of the treatment fluid is not observably reduced by introducing the prepared polyacid and/or polyacid derivative to a treatment fluid. This also relates to a method and composition for use in the oil field services industry including a prepared polyacid and/or polyacid derivative, a fluid, and a viscosity control agent, wherein the viscosity of the composition is not observably lower than if the prepared polyacid and/or polyacid derivative were not present.

US Patent:

8247355, Aug 21, 2012

Filed:

Jun 25, 2009

Appl. No.:

12/491459

Inventors:

Leiming Li - Sugar Land TX, US
Lijun Lin - Sugar Land TX, US
Mathew M. Samuel - Sugar Land TX, US
Syed Ali - Sugar Land TX, US
Paul R. Howard - Sugar Land TX, US

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

C09K 8/62
C09K 8/68
C09K 8/74

US Classification:

507240, 507241, 507244, 507267, 507269, 507277, 1663051

Abstract:

The invention discloses method of treating a subterranean formation of a well bore, the method comprising: providing a treatment fluid comprising: an aqueous base fluid; a viscosity enhancer; and a viscoelastic surfactant, wherein the enhancer is acid in the aqueous base fluid and co-operates with the viscoelastic surfactant to enhance viscosity compared to viscoelastic surfactant alone in the aqueous base fluid; and introducing the treatment fluid into the well bore.

US Patent:

8361935, Jan 29, 2013

Filed:

Aug 11, 2009

Appl. No.:

12/539243

Inventors:

Carlos Abad - Richmond TX, US
Mathew M. Samuel - Sugar Land TX, US
Kevin W. England - Houston TX, US

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

C09K 8/68
E21B 43/16

US Classification:

507209, 507273, 1663051

Abstract:

Methods of treating a subterranean formation are disclosed, using a fluid including an essentially metal-free organic crosslinker selected from amines, diamines, poly amines, polyamino polymers, alcohols, polyols, polyhydroxy polymers, hydroxyl amines, peptides and proteins, combined with a polysaccharide or cellulosic material having oxidized functional groups. The fluid is then introduced into a wellbore penetrating the formation to contact the formation. The polysaccharide or cellulosic material may have aldehyde groups as one example of an oxidized group, or any other suitable oxidized functional group. The polysaccharide or the cellulosic material may be oxidized using at least one of an enzymes, oxidizers, photooxidation, bacteria, catalyst, or other suitable technique. The fluid may also further include an inorganic crosslinker.