Analysis of Influencing Factors of Water Flooding Productivity in Tight Oil Reservoirs

Abstract

With the continuous development of tight oil resources in China, water flooding has become the main development method of major oilfields. However, due to the influence of formation burial depth, cement type, cementation mode and other factors, the fluid flow is difficult, which affects the flow characteristics of the fluid in the reservoir. Based on the analysis of microscopic pore structure characteristics of different levels of reservoirs, combined with the test results of reservoir fluid physical properties, the macroscopic, microscopic, dynamic and static characteristics of reservoirs are systematically summarized, and the effects of cementation degree, reservoir damage, flow threshold and other factors on single well productivity are classified and evaluated. By analyzing the distribution law of water flooding remaining combined with the characteristics of reservoir microscopic pore structure, the characteristics of current productivity influencing factors are comprehensively analyzed.