摘要
以鄂尔多斯盆地延长组长8-长6致密储集层为例,采用地质统计数学(Levy Sim)和沉积地层正演模拟对沉积非均质性进行研究。结果表明,地质统计学Levy函数能够有效地表征非均质性参数,不仅可以表征油藏尺度(岩心、露头和测井曲线尺度),而且也可以有效刻画岩石微观尺度的非均质性。而三维正演地层模拟方法 Sedsim则能够有效地模拟浅水三角洲砂体的空间展布。沉积地层正演模拟与非传统地质统计学相结合,能够更真实地定量刻画不同尺度的沉积非均质性,该方法不仅有效地解决了不同尺度沉积储集层、烃源岩及盖层非均质性定量表征的难题,而且为非常规油气成藏研究提供了新思路与新的定量评价方法。
Sedimentary heterogeneities,which exist in nature at all scales,can be quantitatively characterized by using geostatistics and numerical simulations. In this study,a three-dimensional stratigraphic forward modelling program,Sedsim,was used to simulate the development and evolution of the shallow-water deltas of the Chang 8-6 members of the Yanchang Formation in the Odors Basin. The results showed that bath geostatistics and stratigraphic forward simulations can characterize the sedimentary heterogeneities well. For instance,the geostatistical approach,such as Levy Sim,can effectively characterize the heterogeneity parameters of sedimentary facies without tedious subdivision,while numerical simulations,such as stratigraphic forward modelling tools（Sedsim）,can be used to rapidly test multiple working hypotheses of the relationships between the hydrodynamic processes and depositional facies at various scales. The combination of the non-Gaussian geostatistical method and stratigraphic forward modeling approaches not only can effectively characterize sedimentary heterogeneities at different scales but also can provide a new way for the quantitative evaluation of unconventional reservoirs.
出处
《矿物岩石地球化学通报》
CAS
CSCD
北大核心
2015年第1期61-69,2,共9页
Bulletin of Mineralogy, Petrology and Geochemistry
基金
国家重点基础研究计划(2014CB239004)
中国石油天然气股份有限公司科技管理部项目(2011A-0207)
中国石油长庆油田石油分公司示范工程项目(2011ZX05044)
作者简介
黄秀（1981-），女，博士研究生，研究方向：盆地分析数值模拟．E-mail：huangxiu1983@petrochina．com．cn．
通讯作者简介：刘可禹（1963-），男，教授，研究方向：含油气系统分析．E-mail：keyu-liu@petrochina．com．cn．
