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常规波阻抗反演难以解决岩性油气藏勘探开发的难题。地质模型反演技术和方法是运用钻井、地质资料和参数建立地质模型,在地质模型的约束下进行反演,得到相应的地质数据体(密度、电阻率、速度数据体等),根据数据体进行分析可以预测油气藏。准噶尔盆地白家海地区地质条件复杂、构造圈闭贫乏的C8井区,侏罗系三工河组储层与非储层波阻抗差异较小,而密度和电阻率差异明显,经过地质模型反演,得到密度和电阻率数据体,进行交会预测油气藏分布,预测结果基本得到了验证。
Conventional wave impedance inversion is difficult to solve the exploration and development of lithologic reservoirs. Geological model inversion technology and method is to use the drilling, geological data and parameters to establish the geological model, in the inversion of geological model constraints, the corresponding geological data body (density, resistivity, velocity data body, etc.), according to the data body Analyzes can predict reservoirs. There is little difference in wave impedance between reservoir and non-reservoir in the C8 well region and the non-reservoir in the Jinghai Basin, where the geological conditions are complicated and the tectonic traps are scarce. However, the density and resistivity show obvious differences. After geological model inversion, Density and resistivity data were obtained, and the distribution of oil and gas reservoirs was predicted through rendezvous. The result of the prediction was basically verified.