Page 201 - Reservoir Formation Damage
P. 201
Chapter 10
Single-Phase
Formation Damage
by Fines Migration
and Clay Swelling*
Summary
A review of the primary considerations and formulations of the various
single-phase models for formation damage by fines migration and clay
swelling effects is presented. The applicability and parameters of these
models are discussed.
Introduction
The majority of the formation damage models were developed for
single phase fluid systems. This assumption is valid only for very specific
cases such as the production of particles with oil flow and for special
core tests. Nevertheless, it is instructive to understand these models before
looking into the multi-phase effects. Therefore, the various processes
involving single-phase formation damage are discussed and the selected
models available are presented along with some modifications and critical
evaluation as to their practical applicability and limitations. The method-
ology for determination of the model parameters are presented. The
parameters that can be measured directly are identified. The rest of
the parameters are determined by means of a history matching technique.
The applications of the models and the parameter estimation method are
demonstrated using several examples.
Parts reprinted by permission of the Society of Petroleum Engineers from Civan, ©1992
SPE, SPE 23787 paper, and by permission of the U.S. Department of Energy from
Civan, 1994.
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