PRESSURE DEPENDENT LEAK-OFF MITIGATION IN UNCONVENTIONAL FORMATIONS

摘要

Methods for reducing pressure dependent leak-off (PDL) in PDL fractures of an unconventional subterranean formation are described. The methods include introducing a first fluid including micro-proppant particulates into the formation, allowing a portion of the micro-proppant particulates in the first fluid to seal one or more PDL fractures in the formation, pumping an acid into the formation, allowing a portion of the micro-proppant particulates in the first fluid to divert a flow of at least a portion of the acid from the PDL fractures to a primary fracture, introducing a second fluid including micro-proppant particulates into the formation, and allowing a portion of the micro-proppant particulates in the second fluid to seal one or more PDL fractures in the formation.