Method of improving injection pressure and asphaltene remediation
OwnerWendy Huval, Marty Usie +2inventors
InventorsWendy Huval, Marty Usie, Kelly Berard, Naima Bestaoui-Spurr
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Abstract
A method of removing deposits from a substrate includes contacting the deposits with a treatment fluid containing a solvent and an additive composition including at least one of an alkylbenzene sulfonic acid or an alkylbenzene sulfonate wherein the treatment fluid is substantially free of water; and separating the deposits from the substrate with the treatment fluid to remove the deposits from the substrate, wherein the deposits includes asphaltenes. The deposits can be removed during a fracturing, acidizing, sand control, remedial, completion, or refracturing operation. The treatment fluid can also reduce the viscosity of crude oil and enhance oil recovery.
Claims19
A method of removing deposits from a substrate, the method comprising:
- providing a treatment fluid comprising a solvent and an additive composition comprising at least one of an alkylbenzene sulfonic acid or an alkylbenzene sulfonate wherein the treatment fluid is substantially free of water and is free of acids other than the alkylbenzene sulfonic acid;
- contacting the deposits with the treatment fluid;
- and
- separating the deposits from the substrate with the treatment fluid to remove the deposits from the substrate, wherein the deposits comprise asphaltenes.
A method of removing deposits from a substrate, the method comprising:
- providing a treatment fluid comprising
- about 10 to about 99 volume percent of an aromatic solvent, which comprises at least one of toluene, xylenes, or a low aromatic naphtha, and about 0 to about 50 volume percent of a co-solvent comprising at least one of an alcohol, an amine, an amide, an ether, an ester, a ketone, acetonitrile, dimethylsulfoxide, or a carbonate, each based on a total volume of the treatment fluid;
- about 1 to about 25 volume percent of a C8-30 alkylbenzene sulfonic acid or a salt thereof;
- and about 0 to about 10 volume percent of an additional surfactant comprising sodium trideceth sulfate, about 0 to about 0.07 volume percent of an inorganic acid or organic acid, and less than 1 weight percent of water wherein the volume and weight percents are based on a total volume and weight respectively of the treatment fluid;
- contacting the deposits with the treatment fluid;
- and
- separating the deposits from the substrate with the treatment fluid to remove the deposits from the substrate, wherein the deposits comprise asphaltenes.
Dependencies are inferred from the claim text.