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Weh油田T2k1组油藏为低渗透、难开发油藏。运用砂体微相分析方法,采用储量分布模型建立技术,达到了弄清新疆Weh油田T2k1组低渗难采油藏储量分布特征和下一步挖潜靶区选择的目的。结果表明:油水界面受构造、断裂、砂体展布、物性和成岩后生作用等多因素控制,为一不规则的倾斜面;储量分布与扇三角洲平原亚相的辫状水道微相分布具有较好的相关性;辫状水道微相是下一步扩边挖潜的有利目标。上述工作对低渗难采油藏剩余油分布预测具有指导意义。
The T2k1 reservoir in Weh Oilfield is characterized by low permeability and difficult exploitation of reservoirs. By using the sand body micro-phase analysis method and the reserves distribution model to establish the technology, the objective is to find out the distribution characteristics of the T2k1 low-permeability oil-bearing reservoirs in the Weh oilfield of Xinjiang and the selection of tapping potential targets in the next step. The results show that the oil-water interface is an irregular slope controlled by multiple factors such as tectonics, faults, sand body distribution, physical properties and diagenetic metaplasia. The distribution of oil-water interface is similar to that of the braided channel in fan-delta delta subfacies Good correlation; braided channel micro-phase is the next step to expand the edge to tap the potential target. The above work is of guiding significance for the prediction of remaining oil distribution in low-permeability difficult-to-oil reservoir.