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| 塔木察格油田复杂断块储层非均质性指数与剩余油分布研究 |
| Research on the Reservoir Heterogeneity Index and the Remaining Oil Distribution in the Complex Fault Blocks in TamsagSOilfield |
| 投稿时间：2020-02-18 修订日期：2020-02-18 |
| DOI： |
| 中文关键词: 断块油藏 储层非均质性 渗透率变异系数 非均质性综合指数 剩余油分布 |
| 英文关键词: fault block oil reservoir reservoir heterogeneity variation coefficient of permeability heterogeneous synthetic index remaining oil distribution |
| 基金项目:中国石油重大专项“外围油田改善开发效果及提高采收率技术研究与应用”(2016E-0209) |
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| 中文摘要: |
| 复杂断块油藏非均质性显著,限制了剩余油分布的准确预测,是领域研究的热点与难点。本文以蒙古国塔木察格油田为例,引入储层非均质综合指数来定量表征这种非均质性。结果表明,基于对研究区储层非均质性影响因素的细致分析,选取出沉积微相、微构造、油层有效厚度、孔隙度、隔夹层分布特征、渗透率以及渗透率变异系数为优选参数,以更加全面、有效地反映储层特征,通过归一化处理和加权平均等方法得出了非均质性综合指数值。实践应用表明,塔21-35断块储层非均质综合指数介于0.3~0.5之间的层位为剩余油主要分布区,是寻找潜力的主要目标区。该方法在准确预测复杂地区剩余油分布方面具有良好潜力,值得加以推广应用。 |
| 英文摘要: |
| It is a hot but difficult research point to accurately predict the remaining oil distribution in complex fault blocks due to the outstanding feature of the reservoir heterogeneity.This research applies heterogeneous synthetic indexto quantify the heterogeneous result in the TamsagSOilfield in Mongolia. The index is obtained through normalization, weighting and averaging in detailed analysis of the influences on the reservoir heterogeneity and by choosing the sedimentary microfacies, ministructure, effective thickness, porosity, inter-layer distribution, permeability and permeability variation coefficient as preferred parameters to show the reservoir characteristics more effectively and more comprehensively.The application result shows that the remaining oil distribution in Ta 21-35 fault blocks mainly lies in the horizons with the reservoir heterogeneous synthetic index between 0.3 and 0.5, which should be the target of oil search. The result also shows that this research method is of great potential in accurately predicting the remaining oil distribution in complex geologic areas and worth widely spreading. |
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