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川东石炭系碳酸盐岩储层,形成机制主要为白云化和古岩溶作用.在成岩作用与古岩溶作用研究的基础上,用地球化学自组织理论深入研究了流体热驱对流对储层的影响.结合孔隙介质中水的运移形式,提出川东石炭系碳酸盐岩储层的3个成岩模式:(1)顶部固结一扩散成岩模式;(2)中部岩溶一热驱对流成岩模式;(3)底部淡水平流去白云化成岩模式.控制本区储层发育及分布的主要因素是古岩溶一热驱对流作用.
Based on the study of diagenesis and palaeokarst, the formation mechanism of Carboniferous carbonate reservoirs in eastern Sichuan is mainly composed of dolomitization and palaeokarst, and the geothermal self-organization theory is used to study the effects of fluid thermal-driven convection on reservoir The paper proposes three diagenetic models of Carboniferous carbonate reservoirs in eastern Sichuan: (1) top consolidation-diffusive diagenetic model; (2) central karst-thermal convection Diagenetic model, and (3) pale-leveled bottom-stream dolomitization diagenetic model.The main factor that controls the development and distribution of the reservoirs in this area is the convection of paleokarst-a-thermal flooding.