Optimization study of diamond-shaped inverted nine spot patterns in low permeability reservoirs of horizontal well

Abstract

In recent years, many people have made some research in horizontal wells of low permeability oil reservoirs. In order to further refinement of the existing research, this paper utilized conformal transformation and Potential superposition principle method to optimize and analyze the productivity of rhombus inverted nine-spot horizontal well pattern in low permeability reservoirs.On the basis of other parameters are given, by analyzing the relationships of dimensionless length and shape factor, dimensionless length and dimensionless output of horizontal well, he optimal shape factor and optimal dimensionless output under different well net area, reservoir thickness, and dimensionless length in low permeability reservoirs was got. The results show that it is suitable for using little well net area in low permeability reservoirs.