碎屑岩成岩作用数值模拟及其应用

根据成岩阶段划分原理，建立成岩演化模型，通过成岩阶段的变化表征不同成岩阶段对储集层改造的结果．采用效应模拟方法，模拟成岩参数的空间分布．反演成岩史．建立储集层成岩阶段空间分布格架，为储集层评价和预测提供依据。在库车坳陷东部下侏罗统储集层的成岩作用数值模拟研究中．考虑了埋藏热效应和侧向构造挤压应力对储集层演化的综合作用，认为构造挤压应力是造成研究区目前储集层质量分布格局的主要影响因素。尝试用将构造挤压应力的热效应转化为埋藏热效应的方法研究构造应力对成岩演化的影响．据研究结果认为．研究区西部yxl-kzl井区的成岩强度高主要是构造挤压力引起的,造成储集层质量差；yn2-yn5-tz2井区挤压应力较弱．为有利储集层分市区。图4参10

Numerical simulation of clastic diagenesis and its application

Based on the diagenetic stage division theory and the effect-oriented modeling method, the diagenetic stages are used to describe the modified results of reservoirs due to different diagenesis. The diagenesis study is carried on in two domains of time and space by establishing the diagenetic parameter evolution models to reverse diagenetic history, and by simulating the spatial distribution of diagenetic parameters to build the spatial sketch of diagenetic stages, which supports the basin or sag wide reservoir evaluation and prediction. In the diagenetic modeling of the Lower Jurassic reservoir in the eastern Kuche Sag, considering the integrated effects of burial and tectonic compaction, the tectonic compaction is the major factor controlling the distribution of reservoir quality.