基于沉积参数的地震相分析新方法
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摘要
地震相分析是进行含油气盆地沉积体系研究的重要手段。传统的地震相分析方法主要根据地震属性或波形特征的相似性进行地震相的划分。当岩性组合复杂造成地震属性难以和地震相建立较为匹配的相关关系时,传统地震相分析方法存在着较强的多解性。本文提出基于沉积参数的地震相预测方法是首先根据地震属性和测井数据预测出砂层厚度、油层厚度、灰质厚度、地层厚度等的沉积参数的分布特征,再将这些沉积参数输入进行地震相的划分。与直接使用地震属性相比,沉积参数能更好地刻画沉积微相特征,因而可以有效降低多解性。该方法在济阳坳陷车西地区深层勘探中取得了良好的应用效果。
The seismic facies analysis is very important for studying the sedimentary system in petroleum-bearing basins.The traditional method of the seismic facies analysis is mainly classified by seismic attributes or waveform similarity.When the complex of lithology association can not easily make seismic attributes match with seismic facies,the traditional method might give more than one result.In this paper,we propose a seismic facies forecasting method based on deposition parameters,in which the deposition parameter distribution characteristics of the sand thickness,oil thickness,limestone thickness,layer thickness and so on are performed by seismic attributes and logging data,and then the deposition parameters are regarded as input data to classify the seismic facies.Compared with the traditional method,the new method can display the characteristics of the deposition microfacies much better,so multi-results can be reduced effectively.The new method obtains a good application effect in deep exploration in Jingyang depression of Chexi.
The seismic facies analysis is very important for studying the sedimentary system in petroleum-bearing basins.The traditional method of the seismic facies analysis is mainly classified by seismic attributes or waveform similarity.When the complex of lithology association can not easily make seismic attributes match with seismic facies,the traditional method might give more than one result.In this paper,we propose a seismic facies forecasting method based on deposition parameters,in which the deposition parameter distribution characteristics of the sand thickness,oil thickness,limestone thickness,layer thickness and so on are performed by seismic attributes and logging data,and then the deposition parameters are regarded as input data to classify the seismic facies.Compared with the traditional method,the new method can display the characteristics of the deposition microfacies much better,so multi-results can be reduced effectively.The new method obtains a good application effect in deep exploration in Jingyang depression of Chexi.
引文
[1]赵澄林,朱筱敏.沉积岩石学[M].北京:石油工业出版社,2004.
[2]吴兴宁,周建勋.渤海湾盆地构造成因观点剖析[J].地球物理学进展,2000,15(1):98～105.
[3]高哲民,白应甫,徐筱冰.地震相模式识别[J].石油物探,1987,26(4):102～113.
[4]王如良,宋传春,冯光铭.车镇凹陷车西洼陷油气富集规律[J].油气地质与采收率,2001,8(4):28～31.
[5]毕俊凤.地震多属性加权融合显示技术在宣汉—达县地区的应用[J].油气地质与采收率,2008,15(2):75～77.
[6]吴俊林,何诚,徐敏,等.基于测井资料和地震属性分析地震相分布[J].工程地球物理学报,2010,7(6):732～735.
[7]孟召平,郭彦省,王赟,等.基于地震属性的煤层厚度预测模型及其应用[J].地球物理学报,2006,49(2):512～517.
[8]吕公河,于常青,董宁.叠后地震属性分析在油气田勘探开发中的应用[J].地球物理学进展,2006,21(1):161～166.
[9]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):11～18.
[10]罗红梅.相控模式下的济阳坳陷中深层气藏预测方法——以孤北深层石炭—二叠系煤成气藏为例[J].油气地质与采收率,2007,14(4):41～44.
[2]吴兴宁,周建勋.渤海湾盆地构造成因观点剖析[J].地球物理学进展,2000,15(1):98～105.
[3]高哲民,白应甫,徐筱冰.地震相模式识别[J].石油物探,1987,26(4):102～113.
[4]王如良,宋传春,冯光铭.车镇凹陷车西洼陷油气富集规律[J].油气地质与采收率,2001,8(4):28～31.
[5]毕俊凤.地震多属性加权融合显示技术在宣汉—达县地区的应用[J].油气地质与采收率,2008,15(2):75～77.
[6]吴俊林,何诚,徐敏,等.基于测井资料和地震属性分析地震相分布[J].工程地球物理学报,2010,7(6):732～735.
[7]孟召平,郭彦省,王赟,等.基于地震属性的煤层厚度预测模型及其应用[J].地球物理学报,2006,49(2):512～517.
[8]吕公河,于常青,董宁.叠后地震属性分析在油气田勘探开发中的应用[J].地球物理学进展,2006,21(1):161～166.
[9]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):11～18.
[10]罗红梅.相控模式下的济阳坳陷中深层气藏预测方法——以孤北深层石炭—二叠系煤成气藏为例[J].油气地质与采收率,2007,14(4):41～44.
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