1
Hoang V Le, Subramanian Kesavan, Jeffrey C Dawson, David J Mack, Scott G Nelson: Compositions and methods for hydraulic fracturing. BJ Services Company, O&apos Keefe Egan & Peterman, January 2, 2001: US06169058 (306 worldwide citation)

A subterranean formation is treated by introducing a fracturing treatment composition comprising a polymer treatment fluid containing a dispersion of hydrophilic water swellable particles into the formation. The water swellable particles comprise synthetic polymers that are crosslinked so that they ...


2
Ronald M Matherly, Allan R Rickards, Jeffrey C Dawson: Compositions and methods for controlling particulate movement in wellbores and subterranean formations. BJ Services Company, O&apos Keefe Egan & Peterman, August 27, 2002: US06439309 (208 worldwide citation)

Silyl-modified polyamides, and subterranean formation treatments employing silyl-modified polyamides to minimize migration or movement of naturally occurring or introducable solid particulates within a subterranean formation and/or within a wellbore penetrating a subterranean formation.


3
Jeffrey C Dawson, Hoang V Le, Subramanian Kesavan: Compositions and methods for selective modification of subterranean formation permeability. BJ Services Company, O&apos Keefe Egan & Peterman, May 8, 2001: US06228812 (146 worldwide citation)

Compositions and methods for modifying the permeability of subterranean formations for the purpose of selectively reducing excessive production of aqueous fluids. The compositions include copolymers which may be added to an aqueous fluid to form a water control treatment fluid. The copolymers may in ...


4
Joel L Boles, Arthur S Metcalf, Jeffrey C Dawson: Coated breaker for crosslinked acid. BJ Services Company, Charles D Gunter Jr, Grady K Bergen, March 12, 1996: US05497830 (141 worldwide citation)

A particulate gel breaker for the controlled reduction in viscosity of aqueous acid compositions used in fracture acidizing of subterranean formations, such as in oil and gas wells, is formed for use with crosslinked polymer gels which are crosslinked with organometallic compounds, such as titanium ...


5
Jeffrey C Dawson, Hoang Van Le: Fracturing using gel with ester delayed breaking. BJ Services Company, Howrey Simon Arnold & White, September 21, 2004: US06793018 (138 worldwide citation)

A well treatment fluid composition comprises a solvent (such as water), a polymer soluble or hydratable in the solvent, a crosslinking agent, an inorganic breaking agent, and an ester compound. Preferably, the hydratable polymer is a polysaccharide, such as galactomannan, cellulose, or derivatives t ...


6
Joseph E Thompson Sr, Harold D Brannon, George Tso Chih Woo, William R Wood, Jeffrey C Dawson, Marshall G Ault: Surfactant compositions and uses therefor. BJ Services Company, O&apos Keefe Egan & Peterman, October 16, 2001: US06302209 (136 worldwide citation)

Solid surfactant suspension compositions are formed by combining solid surfactants, such as alpha-olefin sulfonates, with an organic base fluid, such as diesel. Solid surfactant suspensions may be combined with an aqueous carrier fluid to form surfactant-containing fluids suitable for, among other t ...


7
Jeffrey C Dawson, Hoang Van Le: Method of controlling production of excess water in oil and gas wells. BJ Services Company, Charles D Gunter Jr, Grady K Bergen, November 14, 1995: US05465792 (104 worldwide citation)

The production of excessive water in oil and gas wells and other subterranean formations is reduced by introducing a hydrocarbon fluid containing dispersed superabsorbing particles formed using invert emulsion polymerization techniques wherein the superabsorbing particles are formed from hydratable ...


8
Jeffrey C Dawson, Hoang Van Le, William R Wood: Controlled degradation of polysaccharides. BJ Services Company, Charles D Gunter Jr, April 29, 1997: US05624886 (103 worldwide citation)

A method is shown for fracturing a subterranean formation in which a hydratable polymer, crosslinking agent and breaker are combined in an aqueous carrier to form a gelled fracturing fluid. The breaker is comprised of a substantially insoluble oxidant which is granulated and formed into a pellet or ...


9
Jeffrey C Dawson: Method and composition for delaying the gellation of borated galactomannans. BJ Services Company, Charles D Gunter Jr, January 21, 1992: US05082579 (98 worldwide citation)

A complexor and method of use are shown for providing controlled delay of the cross-linking reaction in an aqueous well fracturing fluid. A base fluid is first prepared by blending together an aqueous fluid and a hydratable polymer which is capable of gelling in the presence of borate ions. The comp ...


10
Jeffrey C Dawson, Hoang Le, Subramanian Kesavan: Compositions and methods for modifying the permeability of subterranean formations. BJ Services Company, Arnold White & Durkee, April 7, 1998: US05735349 (93 worldwide citation)

Compositions and methods for modifying the permeability of subterranean formations are shown. The compositions and methods generally comprise forming a dispersion of water swellable crosslinked polymer particles, adding the dispersion to a carrier fluid to form a treatment fluid, and injecting the t ...