Pseudosteady-State Approach to Calculate Long-Time Performance of Closed Gas Reservoirs

유사정상상태 해법을 이용한 폐쇄 가스저류층의 장기거동 계산

This paper considers the applicability of a pseudosteady-state approach to the long-time behavior of real gas flow in a closed reservoir. The method involves a combination of a linearized gas diffusivity equation using a normalized pseudotime and a material balance equation. Comparison with a commercial reservoir simulator showed that highly accurate values of pseudopressure drawdown and well pressure are obtained by the pseudosteady-state approach with much less computational effort.