复杂断块油藏精细地质建模研究--以大65断块为例

摘要

At present the accurate and quantitative characterization of fault-block reservoir is difficulty and research hotspot for reservoir geological modeling.Da 65 fault-block in DaWang Bei oilfield have the characteristics of complex reservoir structural, strong heterogeneity, large difference of block development effect.Based on the date from geological, well logging interpretation,core analysis,well drilling data,the seismic interpretation and so on,Da 65 fault-block fine structure mode was established according to the point-surface-body modeling steps.The sand body model was researched using the method of bounding surface restriction and deterministic modeling.And on this basis single well facies data of well log interpretation were used to construct the sedimentary microfacies mode using deterministic algorithm.Finally under the constraint of sedimentary microfacies,the reservoir parameter model was established by stochastic modeling technique.The fine 3D geological model of complex fault-block reservoir complete the quantitative characterization of structure and attributes,provide a reliable basis for accurate evaluation of the reservoir properties and potential,and also provide geological basis for later adjustment of reservoir development scheme.%针对大王北油田大65断块油藏构造复杂、非均质性强、不同断块开发效果差异大等特点，以地质、测井解释、岩心分析、钻井、地震解释等各方面资料为基础，首先按照点-面-体的建模步骤建立大65断块精细构造模型；通过界面约束法确定性建模方法建立砂体模型；在此基础上，以测井解释单井相数据为基准，采用确定性算法构建了沉积微相模型；并以相控随机建模技术为指导，建立了储层参数模型。大65断块复杂断块油藏精细三维地质模型的建立，实现构造和属性的空间定量表征，为准确评价储层性质及潜能提供了可靠依据，也为后期油藏开发方案的调整提供了地质依据。