Charged Block Co-polymers as Pour Point Depressants

A method comprising:

• contacting an oil-based fluid fluid having at least one fouling component with an additive in an effective amount for at least partially reducing an accumulation of the at least one fouling component within the hydrocarbon fluid as compared to an otherwise identical hydrocarbon fluid absent the additive;
• wherein the at least one fouling component is selected from the group consisting of wax, paraffins, asphaltene, resins, and combinations thereof;
• wherein the additive comprises a block copolymer comprising at least a first component and a second component;
• wherein the first component is a charged monomer selected from the group consisting of a cationic acrylate based monomer, an anionic acrylate based monomer, a sulfonated styrene, a cationic styrene derivative, an ester derived from a cationic terminated alcohol, an ester derived from a carboxylate terminated alcohol, a derivative formed from alkylation with a cationic terminated epoxide, a derivative formed from alkylation with an anionic terminated epoxides, and combinations thereof;
• and wherein the second component is a long chain fatty alcohol acrylate monomer.

A fluid composition comprising:

• an oil-based fluid;
• at least one fouling component;
• an additive comprising a block copolymer having a long chain fatty acid acrylate monomer and a charged monomer;
• and
• wherein the fluid composition has a reduced accumulation of the at least one fouling component as compared to an otherwise identical fluid composition absent the additive.

A fluid composition comprising:

• an oil-based fluid selected from the group consisting of a crude oil, a refinery fluid, a lubricant, a fuel oil, and combinations thereof;
• at least one fouling component;
• an additive comprising a block copolymer having a long chain fatty acid acrylate monomer and a charged monomer selected from the group consisting of a cationic acrylate based monomer, an anionic acrylate based monomer, a sulfonated styrene, a cationic styrene derivative, an ester derived from a cationic terminated alcohol, an ester derived from a carboxylate terminated alcohol, a derivative formed from alkylation with a cationic terminated epoxide, a derivative formed from alkylation with an anionic terminated epoxides, and combinations thereof;
• and
• wherein the fluid composition has a reduced accumulation of the at least one fouling component selected from the group consisting of wax, paraffins, asphaltene, resins, and combinations thereof as compared to an otherwise identical fluid composition absent the additive.