Application Analysis of Well Pattern Optimization Algorithm in Well Pattern Densification Deployment Scheme of Low Permeability Reservoir

Abstract

Nowadays, China's medium and high permeability reservoirs have gradually entered the stage of medium and high water cut, and the proportion of low permeability reservoirs (LPR) is increasing, which has become an important supply of oil and gas reserves in China. The development of low permeability oilfield is very difficult, and the reservoir physical properties are poor, resulting in low single well production, rapid decline in production and poor stable production. Low recovery factor of LPR limits its development and utilization. Aiming at this problem, this paper establishes the application analysis of well pattern optimization algorithm in well pattern infill deployment scheme of LPR. In order to further verify the actual performance of the well pattern optimization algorithm, a number of experimental tests are carried out, and the test results are analyzed. It is concluded that the well pattern optimization algorithm can obtain accurate data results, which provides technical support for the implementation of well pattern encryption deployment scheme in LPR. In the experimental test, four wells in different directions are selected for index comparison. The results show that when the horizontal section is in the north-south direction, the water rises quickly, and the comprehensive water cut and recovery degree are significantly higher than the other four schemes.