Fluid loss additives and methods of making and using same

A non-aqueous wellbore servicing fluid comprising a fluid loss additive wherein the fluid loss additive comprises the reaction product of (i) a functional polymer comprising a copolymer of maleic anhydride and (ii) an oligomerized fatty acid wherein the fluid has a high-temperature high-pressure fluid loss at 300° F. that is reduced by greater than about 40% when compared to an otherwise similar wellbore servicing fluid lacking a fluid loss additive comprising the reaction product of (i) a functional polymer comprising a copolymerb of maleic anhydride and (ii) an oligomerized fatty acid.