论文部分内容阅读
从储层成岩环境参数、物理化学作用和孔隙度演化3个方面进行数值模拟研究.通过对层序地层格架/沉积微相框架下的成岩数值模拟研究、不同时期流体与岩石相互作用下的效应数值模拟研究、沉积模拟和成岩作用模拟相结合的成岩数值模拟研究、成岩物理模拟和成岩数值模拟的融合研究、基于构造-沉积-成岩相融合的成岩数值模拟研究,阐述了成岩数值模拟技术包括基于成岩环境参数研究的储层成岩相演化预测、基于流体-岩石相互作用的物理化学作用、基于沉积模拟和成岩作用模拟相融合的成岩数值模拟和基于成岩作用的储层响应特征.研究结果表明:1)正演盆地模拟和成岩作用模块相互耦合的孔隙度演化模拟技术,重现孔隙演化过程,可准确地评价出孔隙度空间差异性,评价出低渗-致密储层“甜点”空间分布;2)流体-岩石相互作用下的效应数值模拟,研究地质体矿物组分空间差异性条件下的流体-岩石相互作用,揭示储层“溶蚀次生孔隙”型和“原生+溶蚀”型“甜点”的成因机制及响应特征;3)分级次、分类型、按照不同尺度构造-沉积-成岩“三相”融合的成岩数值模拟一体化技术,可评价出低渗-致密储层“甜点”空间分布、控制因素和油气富集规律.
Numerical simulation is carried out from three aspects of reservoir diagenetic environment parameters, physical chemistry and porosity evolution.Based on the numerical simulation of diagenesis under the sequence stratigraphic framework / sedimentary microfacies framework, the interaction between fluid and rock in different periods Effect numerical simulation, diagenetic numerical simulation combining sedimentation and diagenesis simulation, fusion study of diagenetic physical simulation and diagenetic numerical simulation, diagenetic numerical simulation based on tectonic-sedimentary-diagenetic integration and elucidation of diagenetic numerical simulation Including the prediction of reservoir diagenetic facies evolution based on study of diagenetic environment parameters, physical and chemical effects based on fluid-rock interaction, diagenetic numerical simulation based on sedimentary simulation and diagenetic simulation, and reservoir response characteristics based on diagenesis.Results The results show that: 1) The porosity evolution simulation technique of coupling basin modeling and diagenesis modules to reproduce the evolution of pores can accurately evaluate the spatial variability of porosity, and evaluate the porosity and permeability of low permeability and tight reservoir “Spatial distribution; 2) Numerical simulations of the effects of fluid-rock interaction, studied Fluid-rock interaction under the spatial heterogeneity of bulk mineral components, revealing the genetic mechanism and response characteristics of reservoirs ”dissolution secondary porosity“ and ”primary + dissolution“ type ”sweetness“; 3 ) Graded and sub-typed, according to the integration of diagenesis and numerical simulation of tectonic-sedimentary-diagenetic and ”three-phase“ fusion at different scales, the spatial distribution and controlling factors of low permeability and tight reservoir ”sweet Oil and gas enrichment laws.