Earth boring, well treating, and oil field chemistry inventions 11/08

20080293597 - Method for inhibiting hydrate formation: A sterically hindered quaternary ammonium composition is prepared by contacting a solvent having hydroxyl functionality, a halohydrin, and a sterically hindered tertiary amine, under reaction conditions sufficient to produce a sterically hindered quaternary ammonium compound. The reaction proceeds with excellent yield. The resulting compounds are particularly useful for inhibiting formation... Agent: Madan, Mossman & Sriram, P.C.

20080287323 - Treatment and reuse of oilfield produced water: The invention discloses treatment and reuse of oilfield produced water. A method of inhibiting enzymes/bacteria in an aqueous medium for viscosification comprises contacting the aqueous medium with a denaturant and/or a bactericide and thereafter mixing a gelling agent in the aqueous medium. The viscosified fluid can be used as a... Agent: Schlumberger Technology Corporation David Cate

20080287324 - Process for well cleaning: Disclosed is a method for treating an oil or gas well having a wellbore that includes the steps of forming a solvent-surfactant blend by combining a solvent and a surfactant, adding a diluent to the solvent-surfactant blend to form an emulsified solvent-surfactant blend; combining the emulsified solvent-surfactant blend with a... Agent: Crowe And Dunlevy, P.C.

20080287325 - Novel borozirconate systems in completion systems: A cross-linking system for hydratable polymers for using is formation fracturing applications is disclosed along with methods for using same, where the cross-linking system includes a reaction product of a transition metal alkoxide or alkanolate and a borate or borate generating reagent.... Agent: Robert W Strozier, P.l.l.c

20080280786 - Defoamer/antifoamer compositions and methods of using same: A method of servicing a wellbore comprising contacting a solid defoamer/antifoamer composition with a wellbore servicing fluid, wherein the solid defoamer/antifoamer composition comprises at least one water-insoluble compound or slightly water-soluble compound having defoaming/antifoaming activity and at least one emulsifier, and placing the wellbore servicing fluid in the wellbore.... Agent: Craig W. Roddy Halliburton Energy Services

20080280787 - Phenol-formaldehyde novolac resin having low concentration of free phenol: A phenol-formaldehyde novolac resin having a low concentration of free phenol prepared by distilling residual phenol from a molten novolac resin and replacing at least a portion of the phenol with a solvent having a volatility equal to or less than phenol. Such modified novolac resins are suitable for the... Agent: Patent Group Ga30-43 Georgia-pacific LLC

20080280788 - Well treatment with ionic polymer gels: Methods comprising preparing an aqueous mixture of an anionic polymer, a charge screening surfactant, and a borate crosslinker, wherein the mixture has a conductivity less than 10 mS/cm, injecting the mixture down a wellbore, and gelling the mixture. An embodiment of the aqueous mixture can also include tetramethylammonium chloride as... Agent: Schlumberger Technology Corporation David Cate

20080280789 - Methods for stimulating oil or gas production using a viscosified aqueous fluid with a chelating agent to remove scale from wellbore tubulars or subsurface equipment: A method for treating a wellbore tubular or subsurface completion equipment to help remove scale is provided. In general, the method comprises the steps of: (A) determining the likelihood of the presence of carbonate scale in the wellbore tubular or subsurface completion equipment; (B) forming or providing a treatment fluid... Agent: Robert A. Kent

20080280790 - Well treatment with complexed metal crosslinkers: Disclosed are compositions and methods for treating subterranean formations, in particular, oilfield stimulation compositions and methods using polymer viscosified fluid crosslinked with metal complexes with amino and/or phosphonic acids to provide an increased crosslinking temperature and a low pH sensitivity. The metal complexes can be used with borate crosslinkers to... Agent: Schlumberger Technology Corporation David Cate

20080274918 - In situ microemulsions used as spacer fluids: Nanoemulsions, miniemulsions, microemulsion systems with excess oil or water or both (Winsor III) or single phase microemulsions (Winsor IV) may be formed in situ during hydrocarbon recovery operations after drilling with OBM or SBM using one or more fluid pills. The nanoemulsions, miniemulsions, microemulsion systems with excess oil or water... Agent: Madan, Mossman & Sriram, P.C.