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火烧山油田H3油组为一典型的强非均质裂缝性油藏,储层中裂缝非常发育,其裂缝系统呈“米”字形,无明显主方向。地层中既有大裂缝、中裂缝,又有微隐裂缝,且有较明显的区域性。在长期的开发过程中,由于频繁实施压裂、堵水等措施,储集层物性参数不断发生变化,一般的模型难以模拟这类油藏。基于这些特点,为准确高效模拟该类油藏,采用双重介质特征参数分区分阶段数值模拟方法,考虑了裂缝的影响、不同规模裂缝的区域性分布和开发过程中储层物性参数的变化,对火烧山油田H3油组进行了开发中后期精细数值模拟研究,分析了剩余油分布规律。以上方法能够更快地实现历史拟合,模拟结果符合开发实际,对油田实际开发有很好的指导作用,同时为其他该类油藏的模拟研究提供了参考。
The H3 oil group in Huoshaoshan oilfield is a typical strong heterogeneous fractured reservoir. The fractures in the reservoirs are very well developed. The fractured system is in the shape of “m”, with no obvious main direction. The formation of both large cracks, medium cracks, there are micro-cracks, and there is more obvious regional. In the long-term development process, due to the frequent implementation of fracturing, water shutoff and other measures, reservoir physical parameters continue to change, the general model is difficult to simulate such reservoirs. Based on these characteristics, in order to simulate this type of reservoirs accurately and efficiently, the dual-media characteristic parameters are divided into different stages by numerical simulation method. The influence of fractures, the regional distribution of fractures of different scales and the change of reservoir physical parameters during the development are considered. The H3 oil group of Huoshaoshan Oilfield has carried on the fine numerical simulation research in the middle and late stages of development, and analyzed the distribution law of remaining oil. The above method can achieve historical matching faster, and the simulation results are in line with the actual development, which can guide the actual development of the oilfield and provide a reference for the simulation research of other such reservoirs.