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针对用实测声波反演结果无法界定单砂层的顶底 ,无法进行单砂层储层预测与描述的难题 ,对史南 -郝家油田测井资料进行了分析。结果表明 :由于其储层单层厚度薄 ,常规地震方法只能描述砂层组的变化 ,在实测声波曲线上的特征不明显 ,但在自然电位曲线上的特征非常明显 ,顶底界清楚 ,而且块状化后的声波与自然电位之间存在良好的线性关系 ,提出了一种基于自然电位重构声波和实测声波两次反演联合进行储层横向预测的方法 ,进行了反演结果的分辨分析、砂体标定与砂体追踪 ,得出了砂体构造图厚度图的制作步骤和砂体物性参数的估算方法 ,为进一步勘探开发部署提供了地质依据。该方法突出了储层的特征 ,提高了反演结果的可解释性 ,解决了薄层浊积岩单砂体描述的地质难题。
In view of the fact that it is impossible to define the top and bottom of a single sand layer by using the measured acoustic wave inversion results, the prediction and description of the single sand layer reservoir can not be carried out. The logging data of the Shijian-Haojia Oilfield are analyzed. The results show that due to the thin thickness of single reservoir, the conventional seismic method can only describe the change of sand group, but the characteristics on the actual acoustic curve are not obvious. However, the characteristics of the natural potential curve are obvious, the top and bottom boundaries are clear, In addition, there is a good linear relationship between the acoustic wave and the natural potential after massing. A method based on the combination of the natural potential reconstructed acoustic wave and the measured acoustic wave two times inversion to predict the lateral reservoir is proposed. The inversion results Resolution analysis, sand body calibration and sand body tracking, and obtained the steps of making the sand body structure map thickness map and the method of estimating sand body physical parameters, which provided the geological basis for further exploration and deployment. The method highlights the characteristics of the reservoir, improves the interpretability of the inversion results and solves the geological problems described by the thin turbidite single sand body.