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由于钻井方式的选择原因,在W13-6油田新开发井区无法获取岩心,导致无法使用开发试验的方法进行储层敏感性评价工作。针对W13-6油田典型的砂岩、低渗透油藏的地质特征,利用敏感性预测软件进行W13-6油田储层段的敏感性预测并进行储层损害机理研究,结合周边井区的岩石矿物学资料进行分析评价,最终确定W13-6油田为强速敏、强应力敏、有水敏类型地层。开发过程中应控制注入速度,控制注入水矿化度大于36552.5mg/L,并注意及时补充地层能量。
Due to the selection of drilling methods, the core can not be obtained in the newly developed well W13-6 field, which makes it impossible to use the method of development test for reservoir sensitivity assessment. According to the geological characteristics of typical sandstone and low-permeability reservoirs in W13-6 oilfield, the sensitivity prediction software is used to predict the sensitivity of reservoir section W13-6 and to study the mechanism of reservoir damage. Combined with the rock mineralogy Data analysis and evaluation, and ultimately determine the W13-6 oilfield for the strong speed sensitive, strong stress sensitivity, a water-sensitive type of formation. During the development process, the injection rate should be controlled to control the water salinity greater than 36552.5mg / L, and pay attention to timely replenishment of formation energy.