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振幅属性在川中地区大安寨段中的应用——以J区块为例
The Application of Amplitude Attribute to the Daanzhai Member in Central Sichuan
【摘要】 川中地区大安寨段地层为典型的碳酸盐岩,主要储层为大一亚段。模型正演结果表明地层厚度与地震振幅强度存在一定关系。当地震波经过油气层时,其高频成分能量衰减较不含油气层时严重;谱分解技术利用最大熵谱方法,将地震数据变换到频率域,其地震振幅强度表征了油气分布情况。振幅属性在J区块大安寨段的应用效果明显,既可以定性预测大一亚段厚度,也能预测油气分布情况。
【Abstract】 The Daanzhai Member in central Sichuan is a typical carbonate reservoir.A forward modelling shows that amplitude-frequency is related to stratigraphic thickness.Distribution of oil and gas may be characterized by amplitude-frequency.The application to the Daanzhai Member indicates that amplitude attribute may be used for predicting reservoir thickness and distribution of oil and gas.
【关键词】 大安寨段;
碳酸盐;
模型正演;
谱分解;
振幅;
【Key words】 Daanzhai Member; carbonate; forward modelling; spectrum analysis; amplitude;
【Key words】 Daanzhai Member; carbonate; forward modelling; spectrum analysis; amplitude;
- 【文献出处】 四川地质学报 ,Acta Geologica Sichuan , 编辑部邮箱 ,2010年01期
- 【分类号】P618.13
- 【下载频次】156