弹性参数反演与属性融合技术在“甜点”预测中的应用

发布时间：2018-05-02 23:06

本文选题：弹性参数反演 + 地震属性　；参考：《天然气地球科学》2017年04期

【摘要】：利用坐标旋转技术可以构建新的弹性参数,并且通过寻找合适的旋转角度,可以使新构建的弹性参数对储层物性和含气性的区分能力最大化。地震属性融合可以将多个属性融合在一起,达到更准确地预测储层的目的。首先通过岩石物理特征分析,利用坐标旋转技术选取和构建了对储层物性和含气性敏感的弹性参数,然后对这些弹性参数进行叠前同时反演;同时利用叠前和叠后地震数据提取了多种地震属性,从中优选出与"甜点"因子相关度较好的地震属性;最后将弹性参数反演结果与优选出的地震属性进行融合,并根据融合结果对储层"甜点"区进行了识别和预测,结果与钻井实际情况基本一致,且比用单一方法更加可靠。
[Abstract]:The new elastic parameters can be constructed by using coordinate rotation technique, and the new elastic parameters can be maximized in distinguishing reservoir physical properties and gas-bearing properties by finding suitable rotation angles. Seismic attribute fusion can fuse multiple attributes together to predict reservoir more accurately. Firstly, through the analysis of rock physical characteristics, the elastic parameters sensitive to reservoir physical properties and gas-bearing properties are selected and constructed by coordinate rotation technique, and then these elastic parameters are inversed simultaneously before stack. At the same time, a variety of seismic attributes are extracted from prestack and poststack seismic data, and the seismic attributes with good correlation with the "dessert" factor are selected. Finally, the inversion results of elastic parameters are fused with the selected seismic attributes. According to the fusion result, the reservoir "dessert" area is identified and predicted. The result is basically consistent with the drilling practice and is more reliable than the single method.
【作者单位】：中国海洋大学海洋地球科学学院;青岛海洋科学与技术国家实验室海洋矿产资源评价与探测技术功能实验室;海底科学与探测技术教育部重点实验室;
【基金】：国家自然科学基金“部分饱和孔隙介质中地震波的衰减和频散机理研究”(编号:41204089) 国家科技重大专项“东海深层大型气田勘探评价技术”项目(编号:2016ZX05027-002)联合资助
【分类号】：P618.13;P631.4

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