深盆气地震特征及预测方法
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摘要
目前国内对深盆气的研究主要集中在深盆气的地质理论和地质预测方法上,对于深盆气的地震响应特征以及怎样利用这些地震异常特征来预测和评价深盆气等方面还缺乏系统分析和认识。在分析深盆气地质特征的基础上,开展了对其地震响应特征和预测方法的研究及探讨。依据深盆气地质特征的特殊性,认为深盆气一般的地震特征是"平点强振幅、低频条带状、波形复杂化、速度异常面";针对深盆气的地震响应特征,结合国外的预测技术和参照常规天然气的识别方法,把利用地震技术来预测深盆气的方法分为了5类(振幅类、衰减类、波形类、速度类和综合预测类)共20种,建立了深盆气的地震预测方法体系;且重点分析了其中8种针对性强、识别效果好的地震预测方法。
On the basis of analyzing geologic characters of deep-basin gas,the characters and prediction methods of seismic response were studied and discussed.Based on the speciality of deep-basin gas geologic characters,it was considered that the seismic characters of deep-basin gas included "strong amplitude in flat spot and low frequency ribbon,complex wave form and abnormal velocity".In allusion to the seismic response characters of deep-basin gas,in combination with the predicting techniques abroad and conventional gas recognition method,the methods for predicting deep-basin gas with seismic technique are divided into 5 categories(amplitude,attenuation,wave form,velocity and comprehensive prediction)involving 20 types in total.Systematical methods are established for deep-basin gas prediction.Eight seismic prediction methods with obvious effect and recognition efficiency are analyzed.
On the basis of analyzing geologic characters of deep-basin gas,the characters and prediction methods of seismic response were studied and discussed.Based on the speciality of deep-basin gas geologic characters,it was considered that the seismic characters of deep-basin gas included "strong amplitude in flat spot and low frequency ribbon,complex wave form and abnormal velocity".In allusion to the seismic response characters of deep-basin gas,in combination with the predicting techniques abroad and conventional gas recognition method,the methods for predicting deep-basin gas with seismic technique are divided into 5 categories(amplitude,attenuation,wave form,velocity and comprehensive prediction)involving 20 types in total.Systematical methods are established for deep-basin gas prediction.Eight seismic prediction methods with obvious effect and recognition efficiency are analyzed.
引文
[1]金之钧等.小草湖洼陷根缘气有利目标预测.石油大学(北京),2000.
[1]张金川.根缘气(深盆气)的研究进展[J].现代地质,2003,17(2):210.
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[7]Law B E,Ul mishek G F,Clayton J L,et al.Basin-centered gas evaluatedin Dnieper-Donets basin,Donbas foldbelt,Ukraine[J].Oil&Gas Journal,1998,96(47):74～77.
[8]张永刚.油气地球物理新进展:第73届SEG年会论文概要[M].北京:石油工业出版社,2004.
[9]李霞.俄罗斯地球物理勘探前沿技术文集[M].北京:石油工业出版社,2000.
[1]张金川.根缘气(深盆气)的研究进展[J].现代地质,2003,17(2):210.
[2]张金川,金之钧.深盆气成藏机理及勘探预测[M].北京:石油工业出版社,2005.
[3]陈洁,尹长河,张学才等.深盆气藏研究进展[J].油气地质与采收率,2002,9(2):41～43.
[4]刘企英.利用地震信息进行油气预测[M].北京:石油工业出版社,1994.
[5]潘仁芳,史松群,赵玉华.苏里格庙气田盒8段砂岩AVO正演模型研究[J].天然气工业,2002,22(5):7～10.
[6]Law B E.Basin-centered gas systems[J].AAPG Bulletin,2002,86(11):1891～1919.
[7]Law B E,Ul mishek G F,Clayton J L,et al.Basin-centered gas evaluatedin Dnieper-Donets basin,Donbas foldbelt,Ukraine[J].Oil&Gas Journal,1998,96(47):74～77.
[8]张永刚.油气地球物理新进展:第73届SEG年会论文概要[M].北京:石油工业出版社,2004.
[9]李霞.俄罗斯地球物理勘探前沿技术文集[M].北京:石油工业出版社,2000.
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