一种自动识别高分辨率层序地层的方法及计算机实现
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摘要
短期基准面旋回的识别是划分高分辨率层序地层的关键 ,因此 ,采用定量的方法来研究基准面旋回的变化具有十分重要的意义。本文从测井资料的砂泥比计算入手 ,通过分别对地震反射系数密集度、合成地震记录振幅的旋回变化及地震时频的旋回变化进行分析 ,提出了一种综合识别基准面旋回并进行高分辨率层序地层自动划分的方法。通过在实际资料中的应用 ,验证了此方法的正确性 ,为层序地层的定量化研究提供了一种新的方法
Recognition of short base level cycle is key to divide high resolution sequence stratigraphy;therefore,adopting quantitative method to study the change of base level cycle has very important meaning.Starting from calculating the sand to shale ratio based on logging data and through analyzing the density of seismic reflectivity,cycle change of synthetic seismic amplitude and of seismic time frequency,the paper presented a method for synthetic recognition of base level cycle and automatic division of high resolution sequence stratigraphy.The application of real data proved the correctness of the method,which a new method for quantitative study of sequence stratigraphy has been provided.
Recognition of short base level cycle is key to divide high resolution sequence stratigraphy;therefore,adopting quantitative method to study the change of base level cycle has very important meaning.Starting from calculating the sand to shale ratio based on logging data and through analyzing the density of seismic reflectivity,cycle change of synthetic seismic amplitude and of seismic time frequency,the paper presented a method for synthetic recognition of base level cycle and automatic division of high resolution sequence stratigraphy.The application of real data proved the correctness of the method,which a new method for quantitative study of sequence stratigraphy has been provided.
引文
[1] 徐怀大.层序地层学理论用于我国断陷盆地分析中的问题.石油与天然气地质,12(1)
[2] 邓宏文,王洪亮.层序地层基准面的识别.对比技术及其应用.石油与天然气地质,17(3)
[3] VailP R.Seism ic stratigraphy interpretation using se-quence stratigraphy.AAPG,1987,27:1～10
[4] CrossT A andL essengerM A .Sedim ent volume par-titioning:rational for stratigraphic model evaluationand high- resolution stratigraphic correlation.Acceptedfor publication inN orwegian petroleums- forening con-ference volume“PredictiveH igh-ResolutionSequenceStratigraphy”,1996
[5] MitchumR M andVanWagonerJC.High frequencysequences and their stacking patterns:sequnce- strati-graphic evidence of high frequency eustatic cycles.Sediment.Geol,1991,70
[6] 刘建春.VisualC++高级编程技术——开发实例剖析.北京:电子工业出版社,1999
[2] 邓宏文,王洪亮.层序地层基准面的识别.对比技术及其应用.石油与天然气地质,17(3)
[3] VailP R.Seism ic stratigraphy interpretation using se-quence stratigraphy.AAPG,1987,27:1～10
[4] CrossT A andL essengerM A .Sedim ent volume par-titioning:rational for stratigraphic model evaluationand high- resolution stratigraphic correlation.Acceptedfor publication inN orwegian petroleums- forening con-ference volume“PredictiveH igh-ResolutionSequenceStratigraphy”,1996
[5] MitchumR M andVanWagonerJC.High frequencysequences and their stacking patterns:sequnce- strati-graphic evidence of high frequency eustatic cycles.Sediment.Geol,1991,70
[6] 刘建春.VisualC++高级编程技术——开发实例剖析.北京:电子工业出版社,1999
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