尼日尔研究区声波曲线的拟合方法
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摘要
尼日尔研究区阿格巴达组(Agbada)压实程度相对较小,声波响应特征值小。测井资料广泛应用于地震反演,曲线重构是提高储集层与围岩速度差异不明显地区测井约束地震反演效果的有效技术。因该区声波测井资料匮乏,需要拟合声波曲线用于地震反演。文中简单介绍了测井资料的处理,对具有声波曲线井做测井交会图分析,阐述了同一沉积环境下的相同岩性的声波曲线以低频信息和高频信息相融合并参考地层岩性参数的拟合方法,对拟合的伪声波曲线做了对比分析并应用于储层反演。
Agbada Group,the research region in Niger,is under,compacted and acoustic logging response value is small.Well logging data are widely used in seismic inversion.Log reconstruction is an effective technique which can improve the inversion effect constrainted by well logging in the areas where there is little difference in velocity between reservoirs and surrounding rocks.Because there are less acoustic logging data about this area,it is necessary to reconstruct acoustic logs used in seismic inversion.This paper introduces how to process well logging data and analyze the logging cross-plots for the wells which have acoustic logs.It also formulates the method for acoustic log reconstruction through combination of low and high frequency signals under the same depositional environment and unified lithology with reference of formation lithology parameters.The reconstucted logs are compared and applied to reservoir inversion.
Agbada Group,the research region in Niger,is under,compacted and acoustic logging response value is small.Well logging data are widely used in seismic inversion.Log reconstruction is an effective technique which can improve the inversion effect constrainted by well logging in the areas where there is little difference in velocity between reservoirs and surrounding rocks.Because there are less acoustic logging data about this area,it is necessary to reconstruct acoustic logs used in seismic inversion.This paper introduces how to process well logging data and analyze the logging cross-plots for the wells which have acoustic logs.It also formulates the method for acoustic log reconstruction through combination of low and high frequency signals under the same depositional environment and unified lithology with reference of formation lithology parameters.The reconstucted logs are compared and applied to reservoir inversion.
引文
[1]姜传金、马学辉、周恩红,拟声波曲线构建的意义及应用,大庆石油地质与开发,2004,23(1):12-13
[2]陈钢花、王永刚,Faust公式在声波曲线重构中的应用,勘探地球物理进展,2005,28(2):125-126
[3]张鸣、宁松华,重构曲线在地震反演中的应用,断块油气田,2008,15(2):34-35
[4]郑四连、刘百红、张秀容、关达、付强,伽马拟声波曲线构建技术在储层预测中的应用,石油物探,2006,45(3): 257-258
[2]陈钢花、王永刚,Faust公式在声波曲线重构中的应用,勘探地球物理进展,2005,28(2):125-126
[3]张鸣、宁松华,重构曲线在地震反演中的应用,断块油气田,2008,15(2):34-35
[4]郑四连、刘百红、张秀容、关达、付强,伽马拟声波曲线构建技术在储层预测中的应用,石油物探,2006,45(3): 257-258
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