地震波阻抗反演方法之改进与三阶段、九步骤反演方法的初步实践
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摘要
地震波阻抗反演在储层预测中发挥了重要作用,它是确保地震数据、测井曲线、速度和地质信息正确综合的首要技术。地震反演的方法很多,对当前石油工业界常用的5种地震波阻抗反演方法的技术关键、适用性进行了分析和对比。由于受地震资料、地质条件和勘探开发程度的制约,现有波阻抗反演方法各具适应性,并不能很好地解决油田储层地震预测问题。为此,提出了一种新的工作思路——三阶段、九步骤反演方法。应用该方法在松辽盆地GLB地区PTH油层的勘探部署和储量评价中取得较好效果,可预测1~2 m薄储层,对于国内类似地质条件的薄储层预测具有一定的借鉴意义。
In recent years,seismic wave impedance inversion method plays an important role in reservoir prediction,which are the primary technology to ensure the proper integration of seismic data,well-logs,velocity and geological information.In this paper,we have overall analyzed and contrasted of the key technology and applicability of five types seismic wave impedance inversion methods commonly used in petroleum industry.Existing wave impedance inversion methods have different applicability,and there are the problems of seismic oil reservoir prediction due to the restriction of seismic data quality,geological condition,exploitation degree.These problems could not be preferably solved.Furthermore,we presented a thought for seismic inversion called three stages and nine steps inversion method.With this method,the good effects of appliance are acquired in exploration deployment and reserve evaluation of PTH oil layer in GLB of Songliao basin,and 1-2 m thin reservoir could be predicted.This method has some significances for reference to prediction of the thin reservoirs with similar geological conditions in China.
In recent years,seismic wave impedance inversion method plays an important role in reservoir prediction,which are the primary technology to ensure the proper integration of seismic data,well-logs,velocity and geological information.In this paper,we have overall analyzed and contrasted of the key technology and applicability of five types seismic wave impedance inversion methods commonly used in petroleum industry.Existing wave impedance inversion methods have different applicability,and there are the problems of seismic oil reservoir prediction due to the restriction of seismic data quality,geological condition,exploitation degree.These problems could not be preferably solved.Furthermore,we presented a thought for seismic inversion called three stages and nine steps inversion method.With this method,the good effects of appliance are acquired in exploration deployment and reserve evaluation of PTH oil layer in GLB of Songliao basin,and 1-2 m thin reservoir could be predicted.This method has some significances for reference to prediction of the thin reservoirs with similar geological conditions in China.
引文
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[2]王愫,杨治楷,苏明军,等.陆相砂泥薄互层岩性预测新方法[M].北京:石油工业出版社,2002.
[3]赵力民,郎晓玲,康洪全,等.波阻抗反演方法在预测岩性油藏中的应用[J].石油地球物理勘探,1999,34(增刊):39-44.
[4]李勇,邵泽辉,李琼.地震优化非线性反演方法及应用研究[J].矿物岩石,2004,24(1):101-104.
[5]张永刚.地震波阻抗反演技术的现状和发展[J].石油物探,2002,41(4):385-389.
[6]刘文霖.油气田开发地震技术[M].北京:石油工业出版社,1996.
[7]年静波,汤磊,刘喜武.地质统计分析在三维地震资料砂泥岩分布预测中的应用[J].石油物探,2004,43(3):278-282.
[8]沈平平,宋新民,曹红.现代油藏描述新方法[M].北京:石油工业出版社,2002.
[9]王西文.精细储层预测技术在油田开发中的应用[J].石油地球物理勘探,2005,40(2):209-218.
[10]王延光.储层地震反演方法以及应用中的关键问题与对策[J].石油物探,2002,41(3):299-304.
[11]孙春岩,牛滨华,黄新武,等.潜山风化壳碳酸盐岩油气藏地震响应特征研究及振幅横向差异属性在预测中的应用[J].现代地质,2004,18(1):127-132.
[12]居春荣.地震属性技术在岩性油藏滚动开发中的应用[J].现代地质,2004,18(2):244-248.
[13]李军,郝天珧,刘建,等.基于不同邻域系统的马尔可夫链模型的储层岩相随机模拟[J].现代地质,2006,20(4):621-627.
[14]Dolberg D M,Helgesen J,Hanssen TH,et al.Porosity predic-tion from seismic inversion,Laverans Field,Halten Terrace,Norway[J].The Leading Edge,2000,19(4):392-399.
[15]Helgesen J,Magnus I,Prosser S,et al.Comparison of constrainedsparse spike and stochastic inversion for porosity prediction at Kris-tin Field[J].The Leading Edge,2000,19(4):400-407.
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