相控随机建模技术在鄂尔多斯盆地低渗透油藏的应用

发布时间：2018-06-12 11:03

本文选题：鄂尔多斯盆地 + 低渗透油藏　；参考：《现代地质》2016年03期

【摘要】：鄂尔多斯盆地W油田21井区低渗透储集层非均质性较强,注水开发效果不理想。为了精确描述其储集层物性及展布特征,在地质、测井和开发动态等资料的基础上,综合应用相控建模技术,针对鄂尔多斯盆地低渗透油藏采用多种建模方法相结合的手段进行了建模研究,依次建立了研究区的构造、岩相、沉积微相以及微相控制下的储层属性等相关模型。同时对油气储集层相控与非相控建模结果进行了对比,对比结果显示相控属性模型对油藏特征的描述和表征更加合理、准确,应用Petrel地质建模与Eclipse数值模拟的一体化无缝连接,使后续的CO2驱油数值模拟研究也取得了良好的应用效果。这一研究结果直接体现出相控建模技术在鄂尔多斯盆地低渗透油藏的成功应用,也预示着相控建模技术是解决多种沉积微相和非均质性较强的低渗透储集层物性参数相关模拟的有效途径,能清晰地认识和识别砂体连通性及其展布规律,可为低渗透油藏后期开发提供可靠的地质基础。
[Abstract]:The heterogeneity of low permeability reservoir in well 21 of W Oilfield in Ordos Basin is strong, and the effect of water injection is not ideal. In order to accurately describe the physical properties and distribution characteristics of reservoir, based on the data of geology, logging and development, the phase-controlled modeling technology is applied synthetically. Based on the modeling of low permeability reservoir in Ordos Basin, several modeling methods are used to model the reservoir. The related models of structure, lithofacies, sedimentary microfacies and reservoir properties controlled by microfacies in the study area are established in turn. At the same time, the results of facies control and non-facies control modeling of oil and gas reservoirs are compared. The results show that the description and characterization of reservoir characteristics by phase control attribute model is more reasonable and accurate, and the integration of Petrel geological modeling and Eclipse numerical simulation is seamless. The following numerical simulation of CO 2 flooding has also achieved good results. This result directly reflects the successful application of phase-controlled modeling technology in low permeability reservoirs in Ordos Basin. It also indicates that the phase-controlled modeling technology is an effective way to solve the correlation simulation of physical parameters of various sedimentary microfacies and heterogeneous low permeability reservoirs, and can clearly understand and recognize the sand body connectivity and its distribution law. It can provide reliable geological basis for the later development of low permeability reservoir.
【作者单位】：大陆动力学国家重点实验室西北大学地质学系;陕西省能源化工研究院;怀俄明大学能源学院;
【基金】：国家科技重大专项(2011ZX05004-006-004)
【分类号】：TE319

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