Adaptability Analysis of Water Control Completion Measures Under Different Reservoir Characteristics

The ICD/AICD type water control completion technology has been extensively researched and applied in China. Due to the differences in oil fields and blocks, the characteristics of oil reservoirs are also different, resulting in significant differences in the effectiveness of water control completion measures. In order to better utilize the stable oil and water control capabilities of water control completion measures, numerical simulation software was used to consider factors such as water avoidance height, permeability gradient, production pressure difference, viscosity, anisotropy, and crude oil density in ICD/AICD water control completion orthogonal simulation. The results showed that viscosity was the main reason affecting the two water control process measures. Based on the viscosity, adaptability and boundary analysis of ICD/AICD water control completion measures were carried out. The results showed that the water control completion measures effectively changed the main controlling factors of the conventional completion water mechanism, reduced the impact of production pressure difference on water production, and made viscosity the main controlling factor of the water production mechanism of the water control completion measures. AICD completion has shown good oil stability and water control effects in all orthogonal schemes; The factors affecting its effluent only vary greatly with viscosity, while other factors have a relatively small impact. The viscosity adaptability analysis results show that AICD can achieve the goal of stabilizing oil and controlling water within various viscosity ranges. It can significantly delay the time of bottom water breakthrough in low viscosity oil wells, and has a high oil production rate in high viscosity oil wells. The article uses numerical simulation methods to analyze the adaptability of water control completion measures in terms of viscosity, providing theoretical support for the optimization of on-site application of water control completion measures.