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中文摘要：
综合应用各种地质、测井、岩心、分析化验等资料,对洪积扇相储层沉积微相-岩石相进行随机模拟。具体方法是：在对洪积扇相储层特征详细研究的基础上,应用沉积微相-岩石相划分方法精细表征扇中辫状水道微相砂体之间岩性、物性上的差异,总结洪积扇沉积模式,建立不同类型沉积微相-岩石相的储层地质知识库;在沉积模式及储层地质知识库的指导下,应用序贯指示模拟方法建立洪积扇相储层沉积微相-岩石相三维模型,并建立相控下的储层参数模型,利用此模拟方法对实际地层进行随机模拟。结果表明,此方法增强了地质条件的约束力,避免了井间插值的随意性,提高了相控储层参数模型的精度,在实际应用中取得了较好的效果。
英文摘要：
By integrating geological data with well logs and core analysis data,stochastic modeling of sedimentary microfacies-lithofacies model for proluvial fan reservoir was carried out.Based on sophisticated studies on the characteristics of sedimentary microfacies of proluvial fan reservoir,the braided channel sandbodies in midfan were subdivided into three types of sedimentary microfacies-lithofacies characterized by different lithology and reservoir properties.Furthermore,the sedimentary model for proluvial fan reservoir was summarized,and the geological knowledge database for different types of sedimentary microfacies-lithofacies was also set up from the depiction of infill well pattern.Guided by both the sedimentary model and the geological knowledge database,3D model of sedimentary microfacies-lithofacies was established using sequential indicator simulation,and further 3D model of facies-controlled reservoir parameters was established.The simulation method was applied to the stochastic modeling of real formation.The research results show that this methodology strengthens geological constraints,avoids randomness of interpolation between wells,and increases the precision of facies-controlled reservoir model,which has achieved good results in the practical application.
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