Experiment research on water locking damage in low-permeability sand gas reservoirs
Online published: 2008-09-15
Based on the lab experimental research, the comparison is performed among the three types ofwater locking damage of low-permeability sand gas reservoirs. The research shows that water locking damage happens widely and seriously in low-permeability sand gas reservoirs. Among these three types of water locking damage, the water locking under underpressure condition has the minimal damage, the damage under overpressure condition is relatively maximal, and the damage under normal pressure is relatively medial. We should not use water base working fluid, if have to, we should make it in the underpressure condition.
BIAN Lien , HE Zhenhua , HUANG Deji . Experiment research on water locking damage in low-permeability sand gas reservoirs[J]. Lithologic Reservoirs, 2008 , 20(3) : 124 -127 . DOI: 10.3969/j.issn.1673-8926.2008.03.025
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