地震属性的地质意义分析
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摘要
在隐蔽油气藏勘探中,地震属性的实际运用使得地震信息的充分利用成为可能。地震属性分析就是以地震属性为载体从地震资料中提取隐含的信息,并结合地质、钻井资料,进行储层岩性及岩相、储层物性和含油气性分析。其流程大致如下:确定时深关系,做好层位标定;地震属性的提取和优化;地震属性分析。地震属性分析技术主要从横向上定性分析沉积边界和储存识别问题。在陆相盆地,均方根振幅、平均绝对振幅、平均反射能量、50%频率、能量半衰时斜率、瞬时频率的斜率、弧长、平均反射强度、瞬时振幅、瞬时频率、瞬时相位等地震属性能较好应用于储层预测。
In the exploration of subtle reservoirs,the application of seismic attributes make it possible to use seismic information completely.The analysis of seismic attribute is predicting lithology and lithofacies,reservoir physical and oil-bearing properties based on seismic attributes through extracting subtle information from seismic data ,simultaneously combing geological and drilling data. The flow of analysis is as following:making sure the relationship of depth-time and accomplish horizon calibration; making extraction and optimization of seismic attributes and analysis.The analysis of seismic attributes mainly analyses reservoir qualitatively and identifies deposition boundary. In limnic basin,we can make use of root-mean-square amplitude,average absolute amplitude,average reflecting energy,50% frequency,the slope of energy half time,the slope of instantaneous frequency,arc length,average reflection strength,instantaneous amplitude,instantaneous frequency,instantaneous phase etc.to forecast reservoir.
In the exploration of subtle reservoirs,the application of seismic attributes make it possible to use seismic information completely.The analysis of seismic attribute is predicting lithology and lithofacies,reservoir physical and oil-bearing properties based on seismic attributes through extracting subtle information from seismic data ,simultaneously combing geological and drilling data. The flow of analysis is as following:making sure the relationship of depth-time and accomplish horizon calibration; making extraction and optimization of seismic attributes and analysis.The analysis of seismic attributes mainly analyses reservoir qualitatively and identifies deposition boundary. In limnic basin,we can make use of root-mean-square amplitude,average absolute amplitude,average reflecting energy,50% frequency,the slope of energy half time,the slope of instantaneous frequency,arc length,average reflection strength,instantaneous amplitude,instantaneous frequency,instantaneous phase etc.to forecast reservoir.
引文
[1]潘元林.油气地质地球物理综合勘探技术[M].北京:地震出版社,1998
[2]张德林.地震储层横向预测技术与实例[M].北京:石油工业出版社,1992
[3]王玉梅,季玉新,李东波,等.应用地成属性技术预测A地区储层[J].石油物探,2001,40(4):69-76
[4]鲍祥生,尹成,赵伟,等.储层顶测的地震属性优选技术研究[J].石油物探,2006,45(1):28-33
[5]张荣忠,季玉新,崔凯,等.油储地球物理综合描述技术[J].勘探地球物理进展,2002,25(1):55-62
[6]李庆忠.含油气砂层的频率特征及振幅特征[J].石油地球物理勘探,1995,30(1):1-23
[2]张德林.地震储层横向预测技术与实例[M].北京:石油工业出版社,1992
[3]王玉梅,季玉新,李东波,等.应用地成属性技术预测A地区储层[J].石油物探,2001,40(4):69-76
[4]鲍祥生,尹成,赵伟,等.储层顶测的地震属性优选技术研究[J].石油物探,2006,45(1):28-33
[5]张荣忠,季玉新,崔凯,等.油储地球物理综合描述技术[J].勘探地球物理进展,2002,25(1):55-62
[6]李庆忠.含油气砂层的频率特征及振幅特征[J].石油地球物理勘探,1995,30(1):1-23
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