A Rationalized Well Density Study for Steam Injection Recovery in Heavy Oil Reservoirs

摘要

Most heavy oil reservoirs in China are developed with steam stimulation and steam drive at present. Well spacing has direct effect on the profits of steam stimulation and steam drive. This paper analyzes the mechanism of steam injection recovery, according to the characteristics of heavy oil reservoirs, establishes the analytical model on the basis of heat transfer and energy balance, and determines the method to optimize well spacing of steam. A numerical simulator is developed and its reliability is verified.