大庆油田杏十二区葡I3储层三维地质建模与效果评价

发布时间：2018-10-24 07:05

【摘要】：杏十二区复合驱试验区河道严重切叠,平面及垂向非均质性复杂。三元复合驱实验阶段,需要搞清砂体平面及垂向展布特征,搞清注采井间砂体连通关系,采取有针对性的措施调整,才能大幅提高葡I3层采收率。本文主要采用多级相控建模的方法进行储层三维地质建模。运用该方法的首要目标是要有一个相控依据。故本文首先对研究区6个沉积时间单元进行了平面沉积相的研究,严格把关相控框架的准确性;其次绘制以井资料为主的栅状图,作为三维模型检验的重要依据。为了体现高精度建模标准,本文平面采用了平面网格单位为2m×2m,像素高达24.7万;以平均0.1m为垂向上砂体识别分辨率。分析对比了截断高斯模拟、序贯指示模拟以及指示克里金模拟三种不同算法在研究区的应用情况。结果表明,应用指示克里金模拟法对研究区进行沉积相建模的三维呈现效果最好,符合本文的期望。应用交互式相建模方法对特殊成因沉积微相(骑墙河道、上部河道)进行层内或跨层的模拟,并修正模型算法不足。综合三维地质模型、平面沉积相图及栅状图,对储层三维模型进行评价及验证,结果显示模型内各沉积微相砂体识别准确、精度高,三维沉积微相体积分布占比合理,模型与井栅状图符合程度高。
[Abstract]:The river channel in the experimental area of compound flooding in Xing12 area is severely tangent, and the plane and vertical heterogeneity are complex. In the experimental stage of ASP flooding, it is necessary to make clear the sand body plane and vertical distribution characteristics, to find out the sand body connectivity between injection and production wells, and to adopt targeted measures to adjust, in order to improve the recovery factor of the Portuguese I _ 3 layer. In this paper, multi-level phase-controlled modeling method is used to model reservoir three-dimensional geology. The primary goal of applying this method is to have a basis for phase control. Therefore, in this paper, the planar sedimentary facies of six sedimentary time units in the study area are studied, and the accuracy of the framework is strictly checked. Secondly, the grid diagram, which is mainly well data, is drawn as an important basis for 3D model checking. In order to reflect the high precision modeling standard, the flat mesh unit is 2 m 脳 2 m, the pixel is up to 247000, and the average resolution is 0.1 m for vertical sand body recognition. The application of truncated Gao Si simulation, sequential indicator simulation and directed Kriging simulation in the study area is analyzed and compared. The results show that the three dimensional presentation of sedimentary facies in the study area is the best by using the indicative Kriging simulation method, which is in line with the expectation of this paper. The interactive phase modeling method is used to simulate the special genetic sedimentary microfacies (rigged channel, upper channel), and to correct the deficiency of the model algorithm. Three dimensional geological model, plane sedimentary facies diagram and grid diagram are integrated to evaluate and verify the reservoir 3D model. The results show that the sand bodies of each sedimentary microfacies in the model are identified accurately, the accuracy is high, and the volume distribution of three-dimensional sedimentary microfacies is reasonable. The model is in good agreement with the well grid diagram.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE319;P618.13

【相似文献】