应用地震数据体结构特征法预测普光气田储层含气性

Predicting gas reservoir of Puguang Gas Field by applying seismic data structure characteristics abnormality method

针对普光气田碳酸盐岩储层埋藏深,储集空间复杂多样,含气类型变化大,传统的一些油气预测方法已经不能取得较好应用效果的特点,首先引入了地震数据体结构特征油气预测方法,以每个地震道的地震数据元素之间的相互关系(即数据体结构特征)为研究对象,通过提取每一地震道的振幅数值等参数,研究其数据组合、排列特征与含油气性的关系,达到预测油气层的目的。最后,将地震数据体结构特征法用于普光气田储层含气性预测,结果表明,该方法受储层性质影响较小,适用于非均质性很强的碳酸盐岩储层的含气性预测。

The reserve space of carbonate reservoir is complex and various in Puguang Gas Field,so the traditional hydrocarbon prediction methods can not get better results.The paper used the structural characteristics of seismic data volume to predict hydrocarbon reservoir,which took relationship between seismic data components on each seismic trace（that is structural characteristics of data volume） as study object to research the characteristics of composition and range of various parameters and their relationship with hydrocarbon bearing ability by detecting the amplitude value of each seismic trace,achieving the goal of predicting the hydrocarbon reservoir.Finally,the method was used to predict reservoir of Puguang Gas Field.The applied results demonstrated that the method can overcome the influence of reservoir nature and can get better results in the prediction of strong nonhomogeneous carbonate reservoir.