高频拓展处理技术在渤海H油田开发中的应用
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摘要
渤海H油田储层为浅水三角洲相中-细粒砂岩,沉积微相主要为分流河道。常规地震资料对砂泥岩薄互层的分辨能力有限,使储层描述和油田开发方案设计等工作面临着很大难度和风险。高频拓展处理技术采取压缩子波的途径避开了在求取子波方法上存在的难题,可以大幅度提高地震资料的分辨率,丰富各种地质信息,同时还基本保持了地震数据原有的信噪比、相对振幅关系和时频特性,为油藏精细描述和井位设计调整提供了可靠的基础资料。
The Bohai Sea H oilfield reservoir is the shallow delta facies middle-fine sandstone,sedimentary micro facies are mainly the distributary channel.The convention seismic data is limited to the resolution of sand shale thin interbed,brings great difficulty and risk to the reservoir description and oilfield development design.The high frequency expansion processing technology adopted the compression wavelet to avoid the difficult problem in obtaining the wavelet,this might enhance the resolution of the seismic data in large scale,enrich various geological information.Meanwhile maintain the previous signal to noise ratio,relative amplitude relation and time-frequency characteristics of seismic data,which has provided the reliable basic data for the reservoir fine description and the well position design adjustment,and gained very good development progress for the oilfield.
The Bohai Sea H oilfield reservoir is the shallow delta facies middle-fine sandstone,sedimentary micro facies are mainly the distributary channel.The convention seismic data is limited to the resolution of sand shale thin interbed,brings great difficulty and risk to the reservoir description and oilfield development design.The high frequency expansion processing technology adopted the compression wavelet to avoid the difficult problem in obtaining the wavelet,this might enhance the resolution of the seismic data in large scale,enrich various geological information.Meanwhile maintain the previous signal to noise ratio,relative amplitude relation and time-frequency characteristics of seismic data,which has provided the reliable basic data for the reservoir fine description and the well position design adjustment,and gained very good development progress for the oilfield.
引文
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[2]王兆旗,陈见伟,胡冰.地震数据高分辨率处理技术在苏北盆地的应用[J].石油天然气学报,2009,31(5):278-283.
[3]袁红军,吴时国,王箭波,等.拓频处理技术在大牛地气田勘探开发中的应用[J].石油地球物理勘探,2008,43(1):69-75.
[4]徐衍和.优化高频拓展法在煤田勘探中的应用[J].中国煤田地质,2006,18(2):52-54.
[5]赵忠华,陈志德,张晶,等.高分辨率处理技术在松辽盆地塔112区块中的应用[J].内蒙古石油化工,2008,(24):160-162.
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