改进的基于目标的高精度沉积微相建模方法在苏14加密实验区的应用

发布时间：2018-04-21 21:20

本文选题：测井约束反演 + 岩相模型　；参考：《成都理工大学学报(自然科学版)》2017年01期

【摘要】：探讨适合鄂尔多斯盆地苏里格地区地质特征的相控建模方法。以苏里格气田苏14加密实验区为解剖对象,综合运用地质、测井和三维地震资料,在基于模型的测井约束反演结果基础之上,用反演波阻抗数据协同模拟泥质含量模型,进而利用泥质含量识别储层的下限标准建立岩相模型;再利用岩相模型对砂体规模和展布进行分析,并获得基于目标建模所需的各种参数;最后用基于目标体结果的方法(示性点过程法)建立高精度的三维沉积微相模型,开展不同"相控"条件下的属性模型比较分析。结果表明沉积微相控制下的属性模型中,心滩内部储层物性条件最好,其次是点坝,再次是河道微相;而以岩相控制的属性模型无法反映不同沉积微相内部储层物性参数的数学期望值与方差值,模拟结果具有较大的随机性。利用该方法所建的三维沉积微相模型可精细反映各微相的平面、剖面形态以及各微相的接触关系,其约束下的属性模型分相带反映储层的物性变化。
[Abstract]:A phase control modeling method suitable for the geological characteristics of Sulige area in Ordos Basin is discussed. Taking Su14 infilled experimental area of Sulige gas field as the anatomical object, using geological, logging and 3D seismic data synthetically, and based on the results of logging constrained inversion based on model, the mud content model is simulated with inversion wave impedance data in cooperation. Then, the lithofacies model is established by using the lower limit standard of identifying the reservoir with mud content, and then the sand body size and distribution are analyzed by using the lithofacies model, and the various parameters needed for the modeling based on the target are obtained. Finally, a high-precision 3-D sedimentary microfacies model is established by using the method based on the results of the object (the indicative point process method), and the attribute models under different "phase control" conditions are compared and analyzed. The results show that, in the attribute model controlled by sedimentary microfacies, the physical properties of reservoir in Xintan are the best, followed by point dam and channel microfacies. However, the attribute model controlled by lithofacies can not reflect the expected value and variance value of reservoir physical property parameters in different sedimentary microfacies, and the simulation results are relatively random. The 3D sedimentary microfacies model established by this method can accurately reflect the plane, profile shape and contact relationship of each microfacies, and the restricted attribute model can reflect the physical changes of the reservoir.
【作者单位】：中国石化中原油田博士后工作站;中国石化中原油田勘探开发科学研究院;中国石油长庆油田公司苏里格气田研究中心;中国石化中原油田分公司开发管理部;中国石油化工股份有限公司上海海洋油气分公司勘探开发研究院;
【基金】：国家重大科技专项(2011ZX05001)
【分类号】：P618.13

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