Study on Well Pattern Adjustment of Binary Compound Flooding in a Block of S Oilfield

Abstract

A well area is located in the north of S oilfield in the periphery of Daqing, where medium-porosity and medium-permeability reservoirs are developed. At present, there are problems of high water cut and low oil production rate. As a whole, it has entered the development stage of ultra-high water cut. It is planned to carry out the pilot test of binary compound flooding for enhanced recovery. The development characteristics of oil reservoirs in the test area are analyzed, and the development effect of water flooding in the test area is evaluated. According to the characteristics of the test area, the numerical simulation method is used to study the well spacing of the compound flooding well pattern and determine the well pattern adjustment principle. Design the well pattern deployment plan of compound flooding, improve the recovery factor through numerical model prediction, and evaluate the economic benefits to ensure the effect of compound flooding in the test area.