The Study Of Augmented Injection Technique By Acidization In Low Permeable Sublayer

Bonan oil field is low permeable, low viscosity, low saturation and inadequate natural drive lithologic oil reservoir. The essential feature is multiple zone, high effective thickness, well oil qualitative and low water asorbing capacity. Based on the data of correlation well drilling and coring well and production performance in Bonan oil field, the reasons of low injection rate have been studied by analysis the reservoir build, precipitation facie and physical property of reservoir. This paper proposes optimum effect acidation operating fluid formula and optimization technological design procedure based on effect analysis of previous acidation and reservoir feature in BoNan oil field and latent damage form by sensible factor of reservoir.