厚层非均质气藏控水开发研究方法及发展方向OA

To achieve a coordinated regulation of efficient development,balanced recovery,and water influx control in thick heterogeneous gas reservoirs,this study conducts a comprehensive literature review on research methods for interference flow mechanisms,water influx patterns,and water control techniques.Also,the development directions of these research methods were predicted and analyzed.Results show that:(i)traditional physical simulation methods are limited in scale and heterogeneity representation,and yield physical field characterizations with insufficient accuracy,making it difficult to reflect the spatial distribution of physical fields and the characteristics of interference flow during thick-layer reservoir development;(ii)fluid migration in thick-layer reservoirs is jointly affected by heterogeneity and multiple seepage effects.Conventional theories fail to couple multi-directional heterogeneity with nonlinear flow behavior,leading to distorted representations of the flow process;(iii)reserves mobilization and water control in thick-layer reservoirs are mutually restrictive and coupled.Single-objective numerical simulation methods cannot quantitatively describe their interaction and rationally determine the optimal balance between them;(iv)research tools will evolve toward large-scale physical models with high similarity and refined visualization of physical fields,coupled mathematical models for bidirectional heterogeneity,multifield interaction,and multiphase flow,intelligent numerical simulation platforms integrating physical constraints and deep learning,and collaborative decision-making systems for balanced development and water influx regulation.The conclusion is that the reserves mobilization and stable water control in thick heterogeneous gas reservoirs are mutually constrained and coupled.Quantifying the collaborative mechanism between the two and constructing a multi-dimensional collaborative optimization method are the future research directions for balanced water control development under reasonable pressure control in this type of gas reservoir.