Abstract: Provided herein, inter alia, are novel compositions and methods having application in the field of enhanced oil recovery. In particular, the quaternary ammonium compounds and mixtures thereof presented herein can be used, inter alia, for the recovery of a large range of crude oil compositions from challenging reservoirs.

Abstract: A well may be serviced with a fluid formulated with components comprising a friction reducer having at least one polymer unit chosen from acrylamide groups, acrylate groups, sulfo groups, and maleic acid groups; and an anionic surfactant, a cationic surfactant and an aqueous base capable of forming a viscoelastic gel.

Abstract: The present invention includes processes to create wormholes in carbonate reservoirs by contacting a formation with a solution comprising glutamic acid N,N-diacetic acid (GLDA) and/or a salt thereof, methylglycine-N,N-diacetic acid (MGDA) and/or a salt thereof, or a combination thereof. The present invention also includes processes to remove wellbore damage in a carbonate reservoir by contacting a damaged zone of the carbonate reservoir with a solution comprising GLDA and/or a salt thereof, methylglycine-N,N-diacetic acid (MGDA) and/or a salt thereof, or a combination thereof. The present invention further includes solutions comprising a salt and further comprising GLDA and/or a salt thereof, methylglycine-N,N-diacetic acid (MGDA) and/or a salt thereof, or a combination thereof.

Abstract: Copolymers containing acryloylmorpholine and vinylimidazole, and optionally vinylcaprolactam and/or n-vinyl pyrrolidone, have shown superior results in hydrate inhibition tests at conditions of 7° C. subcooling dosed at 1 vol % based on the water cut of the system fluids. The copolymer product has also passed high TDS (total dissolved solids) brine compatibility tests and secondary property tests including foaming and hot injection tests which make it useful as a kinetic hydrate inhibitor in gas production systems susceptible to the formation of natural gas hydrates.

Abstract: Gravel pack composition containing gravel and a water-in-oil emulsion including (a) an organic continuous phase comprising 0.1 to 5 vol % of the emulsion of non-ionic or cationic surfactant and 0.25 to 3 vol % of the emulsion of sorbitan ester; (b) a dispersed aqueous phase comprising 0.05 to 3 vol % of the emulsion of a partial ester of a polyol with at least one C6 to C22 fatty acid and at least one of an acid, acid precursor, and a chelating agent; and (c) a density control agent. The fluid can display a delayed break of up to about 72 hours to enable clean-up of mud cake.

Abstract: Disclosed is an elastomer-conductive filler composite with improved dielectric properties. The composite includes conductive fillers and an ionic liquid dispersing the conductive fillers. The ionic liquid is used as a dispersant to effectively enhance the dispersion of the conductive fillers, achieving a high dielectric constant and a low dielectric loss of the composite without deteriorating the physical properties of the conductive fillers. The use of the ionic liquid can reduce the number of processing steps and the presence of the conductive fillers at a low concentration in the composite can minimize deterioration of the physical properties of the elastomer. Further disclosed is a method for producing the composite.

Abstract: A composition comprising crosslinked expandable polymeric microparticles capable of hydrolysis at or below neutral pH and a method of modifying the permeability to water of a subterranean formation by introducing such compositions into the subterranean formation is disclosed and claimed. This invention further relates to compositions and methods for the recovery of hydrocarbon fluids from a subterranean reservoir or formation subjected to CO2 or CO2 Water Alternating Gas flooding at low pH and increases the mobilization and/or recovery rate of hydrocarbon fluids present in the subterranean formations.

Abstract: Novel benzoxazine-thiol adducts are described, which may be may be cured to produce compositions useful in coating, sealants, adhesive and many other applications.

Abstract: Non-toxic, biodegradable base fluids are disclosed for use in making downhole fluids, where the base fluids include blends of paraffins, olefins, naphthenes, esters, and oxygenates, having low viscosities, having a pale-yellow color, having a flashpoint of >80° C. (175° F.) and have a pour point of about 19° F. Methods for making and using fluids include the base fluids of this invention are also disclosed.

Abstract: A method for the encapsulation and triggered-release of water-soluble or water-dispersible materials. The method comprises a) providing an amount of electrolyte having a charge, b) providing an amount of counterion having a valence of at least 2, c) combining the polyelectrolyte and the counterion in a solution such that the polyelectrolyte self-assembles to form aggregates, d) adding a compound to be encapsulated, and e) adding nanoparticles to the solution such that nanoparticles arrange themselves around the aggregates. Release of the encapsulated species is triggered by disassembly or deformation of the microcapsules though disruption of the charge interactions. This method is specifically useful for the controlled viscosity reduction of the fracturing fluids commonly utilized in the oil field.

Abstract: Methods and compositions for stimulating of the production of hydrocarbons (e.g., formation crude oil and/or formation gas) from subterranean formations are provided. In some embodiments, the compositions are emulsions or microemulsions, which may include water, a terpene, and a surfactant. In some embodiments, methods of selecting a composition for treating an oil or gas well are provided.

Abstract: Methods of treating a subterranean formation including providing a treatment fluid comprising a brine base fluid and an anionic carboxylated polysaccharide, wherein the brine base fluid comprises a concentration of salt in the range of from about 30,000 ppm to saturation and a pH in the range of from about 4 to about 8, and wherein the anionic carboxylated polysaccharide is present in the range of from about 0.05% to about 2% by weight of the treatment fluid; and introducing the treatment fluid into the subterranean formation.

Abstract: This invention refers to the production and use of a petroleum asphaltene handler additive compound which when applied in heavy oil, causes asphaltenes to remain in suspension or dissolve, producing a viscosity reduction effect that prevents formation of precipitation of asphaltenic conglomerates in oil wells and storage tanks, as well as prevents pipelines from being obstructed. The molecular binding of the components of this new additive compound is such that the final liquid may be miscible in all types of oil. There are currently solubility models using different methods for handling asphaltenes; some of which use solvents which generate other problems to the physical and chemical stability of the oil, while others, as for example with the use of steam or heat, provide a temporary solution because the oil ultimately returns to the initial conditions thereof owing to the use of reversible processes.

Abstract: The present invention realizes a display device or input device having excellent ultraviolet protection property for the touch panel, display element or the like, while retaining optical characteristics, even when a small amount of or no optical film is used. The pressure-sensitive adhesive sheet of the present invention has a total light transmittance of 85% or more, a light transmittance at a wavelength of 380 nm of 5% or less, and a haze of 3% or less. The pressure-sensitive adhesive sheet preferably includes a pressure-sensitive adhesive layer containing an acrylic polymer and a triazine-based ultraviolet absorber.

Abstract: The present invention relates to the use of certain benzotriazole derivatives of the general formula (I) where B is an optionally substituted 2-(2-hydroxyphenyl)-2H-benzotriazole group, n is an integer from the range from 3 to 20 and A is an n-valent organic radical, as UV absorber or stabilizer in inanimate organic materials. Furthermore, the invention relates to methods of stabilizing inanimate organic materials, in particular plastics, against the effect of light using specific benzotriazole derivatives. Further subject matters of the invention are certain benzotriazole derivatives and inanimate organic materials comprising certain benzotriazole derivatives.

Abstract: A method for breaking the viscosity of an aqueous fluid gelled with a water soluble polymer or a VES is disclosed. The method includes providing an aqueous fluid. The method also includes adding to the aqueous fluid, in any order: a water soluble polymer in an amount sufficient to form a gelled aqueous fluid having a viscosity, a water soluble oxidizing agent configured to generate free radicals and a plurality of metallic particles to produce a mixture comprising dispersed metallic particles dispersed within the gelled aqueous fluid, the metallic particles configured to dissolve in the gelled aqueous fluid and provide a reducing agent to accelerate the generation of free radicals. The method further includes dissolving the metallic particles in the gelled aqueous fluid to provide a source of at least one transition metal ion in an amount effective accelerate the generation of free radicals and reduce the viscosity.

Abstract: Apparatus and compositions for reducing the viscosity of a gelled fluid is provided. In one embodiment, a viscosity reducing microbe is disposed in a capsule and added to the gelled fluid. The gelled fluid may include a thickening agent adapted to increase its viscosity. Upon release from the capsule, the microbe begins to digest the thickening agent in the gelled fluid and/or releases enzymes that that breakdown the thickening agent.

Abstract: Methods of inhibiting corrosion of a metal surface in a well or pipeline are provided. The methods include the steps of: (a) forming a fluid of: (i) an aqueous acid solution; and (ii) inulin; and (b) introducing the fluid into the well or pipeline. The methods have wide application in various kinds of operations involved in the production or transportation of oil and gas, such as acid stimulation or remedial treatment in a pipeline.

Abstract: The present invention relates to a polyamide composition comprising (amounts are based on the total composition) (A) polyamide, (B) melamine cyanurate and (C) talcum as mineral filler wherein the amount of talcum is higher than 25 wt %, and the weight ratio melamine cyanurate/talcum is higher than ? and to articles made wholly or partly of this polyamide composition. The polyamide is preferably polyamide 6. The composition is commonly used in the industry of for instance electrical and electronic parts and preferably in miniature circuit breakers.

Abstract: A method for controlling the loss of drilling fluid from an oil well borehole into formations penetrated by a drill bit is disclosed by which resilient graphitic carbon particles having a resiliency greater than about 130% rebound after compression to 10,000 psi; a degree of graphitization greater than 85%, as measured by d002 using XRD; an average pore size larger than 0.035 micron; and an aspect ratio smaller than 0.63 are added to the drilling fluid.