Numerical Simulation of Cyclic Gas Injection in Condensate Gas Reservoir with aquifer by Horizontal Vertical Composed Well Pattern

摘要

Pressure maintenance such as gas cycling which re-injection of produced lean gas into the reservoir are common practices and effective measures to improve the development performance of gas condensate reservoir. However, effectively control of gas channeling and control water cut of horizontal well in gas reservoir with aquifer both the keys to improve the development effectiveness. There are many factors that respond for gas channeling and water cresting, single factor experiment is difficult to obtain reliable result. Orthogonal experimental design, also called Taguchi experimental design, is widely used in various fields of scientific research. This paper applied Taguchi experimental design, an L9 orthogonal was used to the X gas reservoir numerical simulation to carry out sensitivity analysis among four factors which are the well pattern, gas cycle time, gas off take, recirculating ratio.