利用地震属性技术分析储层含油气信息——以塔里木盆地HD4油田为例

Seismic attributes reflecting the information of oil-bearing reservoirs—A case study of HD4 Oilfield in Tarim Basin

利用地震属性技术结合地层尖灭正演模型模拟,对薄储层厚度的变化以及储层含油气信息进行了详细的理论和实际分析:分析了地震对储层厚度的分辨率问题,提出了利用地震属性可以分辨小于1/4波长的储层;根据地震波传播过程中的振幅调谐理论,分析了地层厚度变化与振幅调谐之间的关系;利用大面元采集、相对保持振幅高分辨率处理的地震资料,进行了精细的构造解释;通过提取地震属性,结合地质条件分析和大量的井资料分析,对HD4油田油气分布特征进行了分析和预测,其结果极大地促进了油田的勘探和开发进程。

This paper expounds the changes of reservoir thickness and the information of oil-bearing reservoirs by using seismic attributes technology in conjection with the forward model of formation pinchout, including seismic resolution of reservoir thickness. Seismic attributes can distinguish the reservoirs with wave lentgh less than 1/4; the relation between formation thickness changes and amplitude tuning is analysed; and the structure is interpreted based on large bin size acquisition and high resolution seismic data. Through seismic attributes, geological analysis and well data analysis, the distribution of oil and gas in HD4 oilfield is analyzed and predicted, and the result has promoted the exploration and development process.