Described herein are associative polymers capable of controlling one or more physical and/or chemical properties of non-polar compositions and related compositions, methods and systems.

This disclosure relates to winterized pour point depressant compositions for petroleum fluids. Such compositions exhibit stability and are flowable at temperatures down to as low as 47 C., without the need for further dilution.

The invention relates to an oil-in-water emulsion comprising an oil phase and an aqueous phase, and a primary surfactant, wherein the oil phase is dispersed in the aqueous phase, and wherein the oil-in-water emulsion has: an average droplet size distribution (D[4,3]) in the range of from 3 to 15 um and less than 3 wt % of the droplets have a particle size of greater than 125 um; a viscosity of greater than 100 and up to 700 mPas at 50 C.+10% and 20 s.sup.1+10%; and a static stability of less than 5% residue after centrifugation at 50 C.+10% and 2000 g=10% for 30 minutes+10%.

The invention relates to an oil-in-water emulsion comprising an oil phase and an aqueous phase, and a primary surfactant, wherein the oil phase is dispersed in the aqueous phase, and wherein the oil-in-water emulsion has: an average droplet size distribution (D[4,3]) in the range of from 3 to 15 um and less than 3 wt % of the droplets have a particle size of greater than 125 um; a viscosity of greater than 100 and up to 700 mPas at 50 C.+10% and 20 s.sup.1+10%; and a static stability of less than 5% residue after centrifugation at 50 C.+10% and 2000 g=10% for 30 minutes+10%.

A liquid hydrocarbon marine fuel oil includes a marine distillate fuel or a heavy oil or a blend thereof containing an additive combination including: (A) a polyalkenyl-substituted carboxylic acid or anhydride, and (B) a metal hydrocarbyl-substituted hydroxybenzoate and/or sulfonate detergent, where the mass:mass ratio of (A) to (B) is in the range of 20:1 to 1:20 and the treat rate of the additive combination is in the range of 5 to 10000 ppm by mass.

Described herein are associative polymers capable of controlling a physical and/or chemical property of non-polar compositions that can be used when the non-polar composition is in a flow, and related compositions, methods and systems. Associative polymers herein described have a non-polar backbone with a longest span having a molecular weight that remains substantially unchanged under the flow conditions and functional groups presented at ends of the non-polar backbone, with a number of the functional groups presented at the ends of the non-polar backbone formed by associative functional groups capable of undergoing an associative interaction with another associative functional group with an association constant (k) such that the strength of each associative interaction is less than the strength of a covalent bond between atoms and in particular less than the strength of a covalent bond between backbone atoms.

Described herein are associative polymers capable of controlling a physical and/or chemical property of non-polar compositions that can be used when the non-polar composition is in a flow, and related compositions, methods and systems. Associative polymers herein described have a non-polar backbone with a longest span having a molecular weight that remains substantially unchanged under the flow conditions and functional groups presented at ends of the non-polar backbone, with a number of the functional groups presented at the ends of the non-polar backbone formed by associative functional groups capable of undergoing an associative interaction with another associative functional group with an association constant (k) such that the strength of each associative interaction is less than the strength of a covalent bond between atoms and in particular less than the strength of a covalent bond between backbone atoms.

Improved fuel compositions and fuel additive packages which serve to prolong stability at various ambient conditions and to increase fuel efficiency and fuel economy while also significantly reducing the level of multiple emissions constituents generated upon combustion of the fuels including CO.sub.2, NO.sub.x, SO.sub.x, Particulate Matter PM2.5, PM10 and Black Carbon. The fuels may include the hydrocarbon fuels gasolines, diesel fuels, biodiesel fuels, biomass diesel fuels, renewable fuels, synthetic fuels, algae-based fuels, kerosene fuel or heavy fuel oils, or may alternatively be hydrosols, and include an additive package having a sorbitan oleate, a polyoxyethylene alcohol, an alkylene glycol, and an amine. The fuels are mixed with an additive and are emulsified with clean, soft water having a water quality of 1 micron or less.

Compositions may include a wax modifier that is the product of a reaction between a polysaccharide having a number of sugar subunits in the range of 2 to 60 and one or more fatty acid reagents, and a reservoir fluid produced from a subterranean formation comprising one or more components capable of producing waxes. Methods may include contacting a hydrocarbon fluid with a wax modifier, wherein the wax modifier is the product of the reaction of a polysaccharide and one or more fatty acid reagents. Methods may also include introducing a wax modifier into a wellbore penetrating a subterranean formation, wherein the wax modifier is the product of a reaction between a polysaccharide and one or more fatty acid reagents; producing hydrocarbons from the subterranean formation; and allowing the wax modifier to inhibit the precipitation of a wax.

Compositions may include a wax modifier that is the product of a reaction between a polysaccharide having a number of sugar subunits in the range of 2 to 60 and one or more fatty acid reagents, and a reservoir fluid produced from a subterranean formation comprising one or more components capable of producing waxes. Methods may include contacting a hydrocarbon fluid with a wax modifier, wherein the wax modifier is the product of the reaction of a polysaccharide and one or more fatty acid reagents. Methods may also include introducing a wax modifier into a wellbore penetrating a subterranean formation, wherein the wax modifier is the product of a reaction between a polysaccharide and one or more fatty acid reagents; producing hydrocarbons from the subterranean formation; and allowing the wax modifier to inhibit the precipitation of a wax.