Research and Application of Micro-fracturing Blockage Removal Technology in Low-Permeability Thin Sandstone Reservoirs

Low-permeability thin sandstone reservoirs are characterized by small thicknesses, low permeability, and low porosity, making them difficult to develop. This paper investigates a micro-fracturing blockage removal technique to improve the development performance of such reservoirs by injecting a certain amount of fracturing fluid into the wellbore to produce micro-fractures in the reservoir. This technique can improve the reservoir seepage conditions and increase crude oil production. The paper first introduces the principle and process flow of micro-fracturing blockage removal technology. It then analyzes the performance and influencing factors of fracturing fluid through numerical simulations. Finally, the application effect of micro-fracturing blockage removal technology in low-permeability thin sandstone reservoirs is verified through field tests. According to the results, the micro-fracturing blockage removal technology can effectively improve the production capacity and recovery rate of low-permeability thin sandstone reservoirs. It is a simple, economical, and effective method for reservoir development.