葡西油田古1区块黑Ⅱ油层组储层地质建模
发布时间：2018-08-05 20:17
【摘要】：目前,葡西油田已经进入了勘探开发的中后期,存在“储层发育不稳定、砂体零散分布、油水分布复杂、以岩性油气藏为主”等问题,导致油田在开采过程中平面矛盾突出,产量递减快,开采难度相对较大。针对以上问题,本文以高分辨率层序地层学、沉积学等理论为指导,建立了全区统一精细的高分辨率层序地层格架,将葡西油田黑帝庙油层(黑Ⅱ油层组)划分为10个沉积时间单元。通过对研究区岩芯和测井资料的分析,落实了研究区目的层沉积亚相类型,认为研究区黑帝庙油层主要为三角洲前缘沉积,主要发育水下分流河道、河口坝、远砂坝、席状砂、分流间泥等几种微相类型,并绘制了10个沉积单元的沉积微相展布图。同时,开展了单砂体级流体性质及单砂层级物性参数解释研究。在上述研究的基础上,应用Petrel地质建模软件完成了葡西油田古1区黑Ⅱ油层组16条断层、10个沉积单元的构造建模工作,并针对所掌握的古1区实际情况采用了“相控条件下的序贯指示模拟”方法建立了黑Ⅱ油层组10小层的沉积相模型。同时,在随机建模理论和变差函数理论的指导下,将研究区内220口井的孔隙度、渗透率、饱和度等储层物性参数随机模拟到空间网格,完成储层属性模型建立。在建立起精细的属性模型的基础上,计算出模型地质储量。最终得到的三维储层地质模型,符合前期地质认识,不仅精确刻画了地下储层的非均质性、揭示了油气的分布规律,同时也可为数值模拟软件提供准确的三维地质体,这为油田勘探开发人员准确计算剩余油分布,制定合理的油气田开发方案提供一定的指导作用。
[Abstract]:At present, the Puxi oilfield has entered the middle and late stage of exploration and development, and there are some problems such as "unstable reservoir development, scattered distribution of sand bodies, complex distribution of oil and water, and mainly lithologic reservoirs", which lead to prominent plane contradictions in the process of exploitation. Production decline quickly, mining is relatively difficult. Based on the theories of high-resolution sequence stratigraphy and sedimentology, a unified and fine high-resolution sequence stratigraphic framework has been established in this paper. The Heidimiao reservoir in Puxi Oilfield is divided into 10 sedimentary time units. Based on the analysis of the core and logging data in the study area, the sedimentary subfacies types of the target layer in the study area are confirmed. It is considered that the Heidimiao oil layer in the study area is mainly delta front sedimentary, mainly developed underwater distributary channel, estuarine dam, far sand dam, sheet sand, etc. Several microfacies types such as distributary mud and other microfacies types are plotted and the sedimentary microfacies distribution of 10 sedimentary units is plotted. At the same time, the interpretation of single sand level fluid properties and single sand level physical parameters was carried out. On the basis of the above research, the structural modeling of 16 faults and 10 sedimentary units of Hei 鈪，
本文编号：2166900
[Abstract]:At present, the Puxi oilfield has entered the middle and late stage of exploration and development, and there are some problems such as "unstable reservoir development, scattered distribution of sand bodies, complex distribution of oil and water, and mainly lithologic reservoirs", which lead to prominent plane contradictions in the process of exploitation. Production decline quickly, mining is relatively difficult. Based on the theories of high-resolution sequence stratigraphy and sedimentology, a unified and fine high-resolution sequence stratigraphic framework has been established in this paper. The Heidimiao reservoir in Puxi Oilfield is divided into 10 sedimentary time units. Based on the analysis of the core and logging data in the study area, the sedimentary subfacies types of the target layer in the study area are confirmed. It is considered that the Heidimiao oil layer in the study area is mainly delta front sedimentary, mainly developed underwater distributary channel, estuarine dam, far sand dam, sheet sand, etc. Several microfacies types such as distributary mud and other microfacies types are plotted and the sedimentary microfacies distribution of 10 sedimentary units is plotted. At the same time, the interpretation of single sand level fluid properties and single sand level physical parameters was carried out. On the basis of the above research, the structural modeling of 16 faults and 10 sedimentary units of Hei 鈪，
本文编号：2166900
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