Earth boring, well treating, and oil field chemistry inventions 02/08

20080051300 - Compositions and method for improving the productivity of hydrocarbon producing wells: Compositions comprise nonionic fluorinated polymeric surfactants and solvent. The solvent comprises: at least one of a polyol or polyol ether, wherein the polyol and polyol ether have from 2 to 10 carbon atoms; and at least one monohydroxy alcohol, ether, or ketone having from 1 to 4 carbon atoms, or... Agent: Chalker Flores, LLP

20080051301 - Surfactants not toxic to bacteria: An oilfield treatment method is given that uses fluids that contain surfactants used as foamers and/or viscosifiers such that the fluids pass the Alberta Energy and Utilities Board Directive 27 requirements for low toxicity to certain bioluminescent bacteria. Such fluids may be used in oilfield treatments, for example drilling and... Agent: Schlumberger Technology Corporation David Cate

20080051302 - Nano-sized particles for stabilizing viscoelastic surfactant fluids: An aqueous, viscoelastic fluid gelled with a viscoelastic surfactant (VES) is stabilized and improved with an effective amount of an alkali earth metal oxide alkali earth metal hydroxide, alkali metal oxides, alkali metal hydroxides transition metal oxides, transition metal hydroxides, post-transition metal oxides, and post-transition metal hydroxides. These fluids are... Agent: Madan, Mossman & Sriram, P.C.

20080045420 - Zwitterionic polymers comprising betaine-type units and use of zwitterionic polymers in drilling fluids: The invention relates to novel polymers comprising betaine-type units and to the use of zwitterionic polymers in drilling fluids, for example, as a clay swelling inhibitor and/or as an accretion-inhibiting agent and/or as a fluid-rheology-controlling agent and/or a filtrate-reducing agent and/or a lubricant.... Agent: Hunton & Williams LLP Intellectual Property Department

20080045421 - Adaptive cementitious composites for well completions: An adaptive cementitious composite composition, comprising: a coarse particulate material such as sand or proppant; a series of other particulate or fibrous materials; and a carrier fluid; the sand and other particulate materials being present as a series of coarse, medium and fine particle sizes in ratios selected to provide... Agent: Schlumberger Technology Corporation David Cate

20080045422 - Subterranean treatment fluids, friction reducing copolymers, and associated methods: Methods of treating a portion of a subterranean formation, comprising: providing an aqueous treatment fluid comprising water, and a friction reducing copolymer that comprises acrylamide and an acrylic acid ester; and introducing the aqueous treatment fluid into the portion of the subterranean formation. Methods of fracturing a subterranean formation comprising:... Agent: Robert A. Kent

20080045423 - Compositions and methods for plugging and sealing a subterranean formation: The invention provides for a composition for treating a subterranean formation, the composition comprising a water-swellable agent and a sealing agent. Preferably, the water-swellable agent: i) absorbs greater than 100 weight % of water; and ii) swells to greater than 100 weight % as it absorbs water. Preferably the sealing... Agent: Robert A. Kent, Customer No. 71407 Halliburton Energy Services, Inc.

20080039344 - Composition and method for chelated scavenging compounds: There is disclosed herein a composition and method for removing a sulphur compound or carbon dioxide from a substance and methods for its use, said composition comprising a metal at between about 0.5 to 25 percent by weight, a base at between about 1 to 99 percent by volume, a... Agent: Bennett Jones C/o Ms Roseann Caldwell

20080039345 - Shale inhibition additive for oil/gas down hole fluids and methods for making and using same: An under-balanced drilling fluid additive is disclosed which reduces reactive shale and/or clay swelling during under-balanced drilling operations, where the additive includes an effective amount of a choline salt. A method for under-balanced drilling is also disclosed including the step of circulating a drilling fluid including an effective amount of... Agent: Robert W Strozier, P.l.l.c

20080039346 - Methods for effecting controlled break in ph dependent foamed fracturing fluid: wherein R is an alkyl group or aryl group, and wherein X and Y are each independently at least one. A method of fracturing a subterranean formation, comprising the step of forming a foamed fracturing fluid comprising water; an orthoester; a surfactant comprising a tertiary alkyl amine ethoxylate generally represented... Agent: Robert A. Kent

20080039347 - Treatment fluids comprising clarified xanthan and associated methods: Methods are provided that include a method comprising providing a viscosified treatment fluid comprising a base fluid and a gelling agent that comprises a clarified xanthan; and placing the viscosified treatment fluid into at least a portion of a subterranean formation. In some embodiments, the method comprises placing the viscosified... Agent: Robert A. Kent

20080032898 - Method of treating subterranean formations using mixed density proppants or sequential proppant stages: An increase in effective propped lengths is evidenced in hydraulic fracturing treatments by the use of ultra lightweight (ULW) proppants. The ULW proppants have a density less than or equal to 2.45 g/cc and may be used as a mixture in a first proppant stage wherein at least one of... Agent: Jones & Smith , LLP

20080032899 - Anionic amphiphilic copolymers and solutions comprising thereof: It is proposed a new family of terpolymers based on repeating units of two different types of hydrophobic moieties modified with anionic charged groups. In a preferred embodiment, the first hydrophobic moiety is an aromatic compound such as styrene and the second hydrophobic moiety is a fatty acid. Depending on... Agent: Schlumberger Technology Corporation David Cate

20080032900 - Method of formulating and using a drilling mud with fragile gels: A method for drilling, running casing in, and/or cementing a borehole in a subterranean formation without significant loss of drilling fluid is disclosed, as well as compositions for use in such method. The method employs a drilling fluid comprising a fragile gel or having fragile gel behavior and providing superior... Agent: Karen B. Tripp Attorney At Law

20080032901 - Subsurface reactive sealant product: A sealant product to form a reactive seal in a subsurface or intermittently subaqueous environment includes a reactive medium and a hydratable material that when hydrated forms the seal. For example, the reactive medium may be a zero-valent metal, a reduced metal, shredded tires, and any combinations thereof. A method... Agent: Macmillan Sobanski & Todd, LLC

20080032902 - Kinetic gas hydrate inhibitors in completion fluids: Gas hydrate formation in a well completion fluid in the annular space of a hydrocarbon producing well may be controlled by the incorporation of effective amounts of one or more low dose gas hydrate inhibitors, including but not limited to, low dosage hydrate inhibitors (LDHIs), kinetic hydrate inhibitors, dendrimeric or... Agent: Madan, Mossman & Sriram, P.C.

20080032903 - Biocide for well stimulation and treatment fluids: A well stimulation fluid includes water, a polymer, and a biocide consisting of 2,5-dimethyl-1,3,5-thiadiazinane-2-thione in an amount effective to inhibit bacterial growth.... Agent: Cantor Colburn, LLP