A Model of Reservoir Permeability Evolution during Oil Production

In this paper, we present a mathematical model to predict the evolution of rock permeability depending on effective pressure during oil production. The is based use results well testing data from wells operating in fields Perm–Solikamsk region north Volgo Ural and gas province. Dependences change flow characteristics reservoir were established. We performed comparative assessment using that normalized dimensionless forms k/ko P/Po. factors their influence nature determined. Depending type rock, its composition, initial permeability, bedding conditions, determined limits variation constants empirical equations describing rocks pressure. developed enables prediction production reservoirs basis properties such as pressure, average depth, net-to-gross ratio,