Abstract: A fluid composition including a base fluid; and an additive composition. The additive composition includes an emulsifier; a fluid loss control agent; a rheology modifier; and a viscosifier. The fluid composition is free or substantially free of organophilic clay. The fluid composition may be used as a drilling composition.

Abstract: A high temperature-resistant and high oil-absorption resin particle plugging agent suitable for oil-based drilling fluid and its preparation method is prepared from raw materials in parts by mass as follows: 15-30 parts of reaction monomers, 5-12 parts of linear high polymers, 0.1-1.5 parts of cross-linking agents, 0.1-0.5 parts of initiators, 1-3 parts of modified starches, 1-5 parts of filler particles and 1-5 parts of dispersing agents; it has high oil absorption capacity under a high-temperature condition and high toughness after oil-absorbing expansion.

Abstract: The present disclosure relates to methods for adding a recirculation chemical composition to a hydrocarbon containing stream. The recirculation chemical composition may be an emulsion breaker. The hydrocarbon containing stream may be separated into a stream containing water and a stream containing oil. The stream containing oil may be contacted in a water wash unit, and the residual emulsion breaker may be removed from the stream containing oil.

Abstract: Disclosed are succinimide-based compounds used in compositions and methods for inhibiting natural gas hydrate agglomerates. The succinimide-based compounds are reaction products of an alkenyl succinic anhydride and an amine or amine alcohol.

Abstract: Methods of suspending at least one weighting agent in drilling fluids. The embodiments include adding a quantity of precursor nanoparticles including carbon nanotubes supported by metal oxide catalyst nanoparticles to the drilling fluid. The metal oxide catalyst nanoparticles and the drilling fluid are selected such that the metal oxide catalyst nanoparticles are dissolvable in the drilling fluid. The metal oxide catalyst nanoparticles dissolve in the drilling fluid, resulting in an amount of carbon nanotubes dispersed within the drilling fluid. The carbon nanotube dispersion increases the value of at least one of a Newtonian viscosity, a yield point, a plastic viscosity, and a density of the drilling fluid with the dispersed carbon nanotubes versus a similar or equivalent drilling fluid without the carbon nanotube dispersion. The method may further include adding at least one weighting agent which will become suspended in the drilling fluid.

Abstract: An inhibited mud acid composition, said composition comprising: hydrofluoric acid in solution; an alkanolamine; and a mineral acid selected from a group consisting of: HCl; MEA-HCl and other modified acids, wherein said alkanolamine and hydrofluoric acid are present in a molar ratio of at least 1:1.

Abstract: A solid scale inhibitor for use in fracking operations to inhibit scale build up, includes a powdered composition having a salt component and an acid component; the powdered composition is 100% dissolvable; and the acid component increases the dissolution rate associated with the salt component, thereby preventing the salt component from contributing to scaling formation in one or more production lines within a fracking operation. While both the salt and the acid in the present invention inhibit scale formation on their own, the acid (HEDP in the preferred embodiment) dissolves quickly, while the salt (HA in the preferred embodiment) dissolves very slowly; by combining the two, the dissolution rate of the acid is slowed and the dissolution rate of the salt is increased. Thus providing for an effective long term solid scale inhibitor.

Abstract: Methods and compositions for modifying the rheological properties of non-aqueous fluids for treating subterranean formation are provided. In one or mom embodiment, the compositions comprise a non-aqueous fluid; a weighting agent; and one or more associative polymers that are capable of associating to form one or more supramolecular assemblies. In one or more embodiments, the methods comprise introducing a treatment fluid into a wellbore penetrating at least a portion of a subterranean formation, wherein the treatment fluid comprises a non-aqueous fluid and one or more associative polymers.

Abstract: An invert-emulsion drilling fluid may include a dispersed aqueous phase including an aqueous base fluid, a continuous non-aqueous phase including a non-aqueous base fluid, and a first bridging package. The first bridging package may include one or more particulate carbonate materials. All of the particulate carbonate materials of the invert-emulsion drilling fluid may be part of the first bridging package. The first bridging package may have a trimodal particle size distribution such that the particle size distribution of the first bridging package includes three peaks, wherein each peak may be in the range of less than or equal to 300 microns in the particle size distribution. The invert-emulsion drilling fluid may be included in methods for reducing lost circulation in subterranean formations during drilling operations.

Abstract: A lost circulation material (LCM) is provided having an alkaline nanosilica dispersion and an ester activator. The alkaline nanosilica dispersion and the ester activator may form a gelled solid after interaction over a contact period. Methods of lost circulation control using the LCM are also provided.

Abstract: The present invention relates to the use of a sequenced polymer as an agent for monitoring the filtrate and the rheology of a fluid injected under pressure into an oil rock, wherein the fluid comprises solid particles and/or is brought into contact with solid particles within the oil rock after being injected, the polymer comprising: a first block which is adsorbed onto at least some of the particles; and a second block having a composition other than that of the first block and a mean molecular weight of more than 10,000 g/mol, for example more than 100,000 g/mol, and which is soluble in the fluid.

Abstract: A fiber silica composite microsphere for a shale stratum comprises a hollow silica sphere and fibers, and the fibers are partially coated on an outer surface of the hollow silica sphere and partially embedded into an interior of the hollow silica sphere. The hollow silica sphere has an outer diameter of 1-5 ?m and an inner diameter of 0.8-4.7 ?m; the fibers have a length of 5-10 ?m and a width of 1-3 ?m.

Abstract: A method of minimizing the weight loss of mass of the drilling pipe and wellbore casing while drilling a subterranean well with an oil-based drilling fluid comprising adding to the oil-based drilling fluid an anti-wear additive based on sulfated, sulfonated or sulfited natural oils or fats of vegetable or animal origin.

Abstract: A lignocellulose nanofibril material, a stable foam system based thereon, a preparation method and an application thereof are provided. The lignocellulosic nanofibril material includes the following components: 0.5-20 wt % of wood flour, 0.1-10 wt % of (2,2,6,6-tetramethylpiperidin-1-yl)oxidanyl, 2-25 mmol/g of an oxidant, 6-15 wt % of NaBr, and the remaining is water. The stable foam system based on the lignocellulosic nanofibril material includes: 0.1-1.0 wt % of the lignocellulosic nanofibril material, 0.2-1.0 wt % of a surfactant, 0.1-10 wt % of sodium chloride, 0.1-1.0 wt % of calcium chloride, 0.1-1.0 wt % of magnesium chloride, 0.1-1.0 wt % of sodium sulfate, and a balance of water.

Abstract: The present invention generally relates to compositions and methods for inhibiting corrosion at a surface in the production, transportation, storage, and separation of crude oil and natural gas.

Abstract: Copolymers and compositions containing copolymers having advantageous viscosity, friction reduction, dissolution, pH-stability, and temperature-stability are provided. These copolymers can be used as rheology modifiers for oil field applications.

Abstract: Embodiments of the present disclosure are directed to embodiments of synthetic functionalized additives. The synthetic functionalized additive may include a layered magnesium silicate. The layered magnesium silicate may include a first functionalized silicate layer including a first tetrahedral silicate layer covalently bonded to at least two different functional groups, an octahedral brucite layer, including magnesium, and a second functionalized silicate layer including a second tetrahedral silicate layer covalently bonded to at least two different functional groups. The octahedral brucite layer may be positioned between the first functionalized silicate layer and the second functionalized silicate layer. The at least two different functional groups covalently bonded to the first tetrahedral silicate layer may be the same or different than the at least two different functional groups covalently bonded to the second tetrahedral silicate layer.

Abstract: Compositions and methods for prevention and reduction of iron sulfide scale formation, one method including detecting at least one component indicative of an iron sulfide scale precursor, the at least one component selected from the group consisting of: H2S; HS?; S2?; Sn2?; FeS(aq); Fe2+; Fe3+, and combinations of the same; preparing a composition to react with the iron sulfide scale precursor, the composition comprising at least one compound selected from the group consisting of: a methylating agent; a metal operable to react with sulfide species; a compound to increase the oxidation state of Fe2+; and combinations of the same; and applying the composition to the iron sulfide scale precursor to consume the iron sulfide scale precursor.

Abstract: The invention provides a method for employing the total product stream from hydrolysis of triglycerides comprising fatty acids, glycerin and water to address at the environmental issues associated with drilling, completion and hydrofracturing wells employed for recovery of subterranean hydrocarbon deposits in an area of shale formation.

Abstract: Disclosed here are drilling fluid compositions containing linear alpha olefins, an invert emulsifier, a filtration control agent; and an inorganic mineral component including one or more of lime, calcium chloride, and barite. Also disclosed here are methods of using such compositions during drilling operations for recovery of hydrocarbons. Various other embodiments may be disclosed and claimed.