Simulation of sandstone acidizing of a damaged perforation
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A mathematical model has been developed to study the effect of acidizing on the productivity of a single perforation penetrating a sandstone reservoir as a function of the distribution of damage around the perforation. Assuming the perforation to be ellipsoidal in goemetry, the author derived a 2-D model which describes the single-phase flow of an acid through a perforated sandstone that contains two pseudochemical minerals dissolving at different rates. The pressure and concentration distributions over the region of interest are obtained by solving the system of governing equations in ellipsoidal coordinates. In this paper, cases showing the effectiveness of acidizing in removing both drilling fluid damage and perforation damage are presented.
author list (cited authors)
Lea, C. M., Hill, A. D., & Sepehrnoori, K.
complete list of authors
Lea, CM||Hill, AD||Sepehrnoori, K