Patent ID: 7687438

Claim:
A method comprising: placing a drill in fluid in the subterranean formation, the drill-in fluid comprising: an aqueous base fluid, a viscosifier, a relative permeability modifier fluid loss control additive, wherein the relative permeability modifier fluid loss control additive comprises a water-soluble hydrophobically modified polymer comprising a reaction product of a hydrophilic polymer and a hydrophobic compound, wherein the mole ratio of the hydrophilic polymer to the hydrophobic compound is in the range of from about 99.98:0.02 to about 90:10, and a degradable bridging agent comprising a degradable material capable of undergoing irreversible degradation downhole; and forming a self-degrading filter cake comprising the bridging agent upon a surface within the formation whereby the fluid loss through the self-degrading filter cake is reduced.