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含油性定量预测是盆缘地层圈闭勘探的关键问题之一。在前人研究成果和对济阳坳陷75个区块地层油藏地质基础数据统计的基础上,依据地层油藏特征,以地层油气藏成藏动力为主线,确定了地层圈闭含油性的主控因素是储层物性、圈源距离、输导层倾角、盖储毛管压力差。地层圈闭的含油性可以用储层孔隙度下限和圈闭的含油高度来表征。通过多元回归分析,建立了济阳坳陷地层圈闭含油性定量预测模型。应用该模型对金家油田金16块含油性进行了预测,预测值与实测值相比误差仅为8%,表明建立的地层圈闭含油性预测模型具有较高的可靠性,能够实现对地层圈闭含油性钻前的定量预测。
Quantitative prediction of oil content is one of the key problems of trap exploration in basin margin. Based on the research results of predecessors and the statistics of reservoir geological data of 75 blocks in Jiyang Depression, based on the reservoir characteristics of the strata and the main driving force of reservoir formation, the stratigraphic trap oiliness The main controlling factors are reservoir physical properties, circle source distance, dip angle of conductivity layer and capillary pressure difference of cap storage. The stratum trap oiliness can be characterized by the lower limit of reservoir porosity and the trapped oil height. By multivariate regression analysis, a quantitative prediction model of formation oil content in the Jiyang depression was established. This model is used to predict the gold content in Jin 16 oil field of Jinjia Oilfield. The prediction error is only 8% compared with the measured value, indicating that the established oil trap prediction model of formation trap has high reliability and can realize the prediction of the formation Quantitative prediction of trap oil before drilling.