Development of a Software for Simulation and Design of Sandstone Matrix Acidizing Process

In this paper, modeling of matrix acidizing process in sandstone formations and development of a matrix acidizing numerical simulator are investigated. Models used to describe sandstone matrix acidizing are presented and one of the most applicable models is used for computer programming. Governing equations in this model are presented and the steps for software development are explained. By means of this simulator, the effects of formation characteristics and design parameters are discussed. The most important designing parameters in sandstone matrix acidizing are acid formulation, injection rate and preflush and over flush volumes. Sensitivity analysis demonstrates that formation characteristics that affect these design parameters are type of damaging material, rock composition, radius and severity of damage. It is also concluded that modeling and numerical simulation can provide an invaluable means of determining the best matrix acidizing design for a given set of formation and damage characteristics. The simulator developed in this work could be used for such a purpose.

کلیدواژه ها:

Matrix acidizing ، Formation damage ، Mineral composition of rock ، Two acids- Three minerals model