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岩性地层油气藏已成为我国陆上今后相当长一个时期内最有潜力、最现实的油气勘探领域,砂岩透镜体油气藏已成为岩性地层油气藏勘探的热点,但目前对其成藏条件尚未达成共识。在对砂岩透镜体成藏的可能模型进行详细分类的基础上,利用先进的数值模拟软件模拟并结合油田实例分析,对源内无断层沟通型水平状砂岩透镜体成藏条件进行了初步探讨,结果表明:泥岩初始含油饱和度是源内无断层沟通型水平状砂岩透镜体成藏的主导因素,泥岩的渗透率、泥岩与砂岩毛细管压力压差等,也是源内水平状砂岩透镜体成藏不可忽视的因素。
Lithologic stratigraphic reservoirs have become the most potential and realistic field for oil and gas exploration in China for a long period of time in the future. Sandstone lens reservoirs have become the focus of exploration for lithologic stratigraphic reservoirs. However, their hydrocarbon accumulation conditions No consensus yet reached. Based on the detailed classification of the possible models of sandstone lens formation and the advanced numerical simulation software combined with the analysis of oilfield examples, the reservoir forming conditions of horizontal and vertical sandstone lenses with no fault in the source were discussed. The results It is shown that the initial oil saturation of mudstone is the dominant factor for the accumulation of horizontal sandstone lenses with no fault in the source, the permeability of mudstone, the capillary pressure difference between mudstone and sandstone, and also the accumulation of horizontal sandstone lenses in the source can not be ignored factor.