钻探工程2025，Vol.52Issue(5)：34-41,8.DOI:10.12143/j.ztgc.2025.05.005
致密砂岩岩心水驱前缘形貌演化规律研究
Morphology evolution of water flooding front in tight sandstone cores
摘要
Abstract
The development effect of water flooding in tight sandstone reservoirs is closely related to the morphology of water flooding front,so accurate prediction of the water flooding front topography is the key to evaluating the water flooding development effect of tight sandstone reservoirs.Most current water flooding front evolution models assume that the reservoirs are homogeneous and do not consider the microstructures of the reservoirs,so they cannot effectively predict the evolution law of the water flooding front in tight sandstone reservoirs.In this work,by combining the water flooding front morphology evolution tests,and the fractal theory,the evolution of the average displacement and the fractal dimension of water flooding front in tight sandstone reservoirs are studied.On this basis,by combining the Langevin equation,the stochastic theory,and the Buckley-Leverett theory,a theoretical model for predicting the water flooding front evolution in tight sandstone reservoirs is established.The results show that the theoretical calculation is in good agreement with the experimental results,which verifies the correctness of the theoretical model.The boundary position of water flooding front in tight sandstone reservoirs is influenced by the macroscopic average displacement(controlled by the Buckley-Leverett theory)and the fractal dimension of water flooding front topography(controlled by water phase viscosity and rock heterogeneous pore structures).The results reveal the physical and mechanical mechanism of complex displacement boundaries caused by water flooding in tight sandstone reservoirs.关键词
致密砂岩油藏/水驱前缘/演化规律/分形维数/宏观平均位移Key words
tight sandstone/water flooding front/evolution law/fractal dimension/macroscopic average displacement分类
能源科技引用本文复制引用
吴阳,汪可艺,胡晨,莫邵元,焦春艳..致密砂岩岩心水驱前缘形貌演化规律研究[J].钻探工程,2025,52(5):34-41,8.基金项目
岩土钻掘与防护教育部工程研究中心开放基金(编号:202406) （编号:202406）
