Abstract: A method of reducing scale on a surface, the method including: contacting (i) one or more biochelants; (ii) one or more organophosphorus compound; (iii) an optional enhancer and (iv) a solvent with the surface having one or more deposits comprising iron sulfide. A composition comprising: (i) a biochelant; (ii) an organophosphorus compound; (iii) an optional enhancer and (iv) a solvent. A method of servicing a wellbore disposed in a subterranean formation including: placing into the wellbore a fluid comprising a biochelant; (ii) an organophosphorus compound; (iii) an optional enhancer; and (iv) a solvent for a time period sufficient to reduce a level of iron sulfide deposits by at least about 10% wherein the optional enhancer comprises an amino alcohol.

Abstract: Additives may be used to decrease the viscosity of heavy residual hydrocarbons. The additives are prepared using a formulation comprising: a first component selected from the group consisting of (alkoxylated)-(di or tri)-alkyl phenol-aldehyde (amine) resins; ?-Olefin-maleic anhydride co-polymers and grafted polymers including half ester/amide and full ester/amide derivatives; and combinations thereof; and a second component which is a synergist and selected from the group consisting of polyamines, amidoamines, imidazolines, and combinations thereof.

Abstract: Additives may be used to decrease the viscosity of heavy residual hydrocarbons. The additives are prepared using a formulation comprising: a first component selected from the group consisting of (alkoxylated)-(di or tri)-alkyl phenol-aldehyde (amine) resins; ?-Olefin-maleic anhydride co-polymers and grafted polymers including half ester/amide and full ester/amide derivatives; and combinations thereof; and a second component which is a synergist and selected from the group consisting of polyamines, amidoamines, imidazolines, and combinations thereof.