DEGRADING WELLBORE FILTERCAKE WITH ACID-PRODUCING MICROORGANISMS

摘要

A method of degrading a filtercake in an interval of a wellbore penetrating a subterranean formation is provided, wherein the filtercake includes a gelled or solid material that can be dissolved or hydrolyzed with an acidic fluid. The method includes the steps of: (A) introducing a treatment fluid into the interval of the wellbore, the treatment fluid comprising: (i) water; and (ii) an acid-producing anaerobic microorganism; and then (B) shutting in the interval of the wellbore.