地震属性在延川南煤层气勘探中的应用
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摘要
从延川南地区地震资料中提取各种地震振幅、频率、相位等地震属性,比较分析地震属性与反射结构、煤层气储层中的煤层、含水层、含气层的关系,结果表明地震属性分析可以精细地描述煤层气储层的构造、地层和岩性特征,可以判别储层中强含水、含气层。结合钻井地质资料与测井资料,三瞬剖面解释可以进行煤层厚度估计与质量评价,为煤层气钻井设计提供依据。
Various seismic attributes,like amplitude,frequency,phase,etc.are drawn from seismic data of Yanchuan south area.By comparing the relationship between seismic attributes and reflection configuration,and coal seam,aquifers,gas-bearing layers in CBM reservoir,the authors found that seismic attributes could be used to describe elelaborately the tectonics,ground strata and lithologic characteristics of CBM reservoir,and they can be used to discriminate strong water-bearing and gas-bearing layers in the reservoir.Using geological data and logging data obtained in drilling,the three transient section interpretations can be used to estimate seam thickness,and to evaluate quality,so as to provide criteria for design of CBM well design.
Various seismic attributes,like amplitude,frequency,phase,etc.are drawn from seismic data of Yanchuan south area.By comparing the relationship between seismic attributes and reflection configuration,and coal seam,aquifers,gas-bearing layers in CBM reservoir,the authors found that seismic attributes could be used to describe elelaborately the tectonics,ground strata and lithologic characteristics of CBM reservoir,and they can be used to discriminate strong water-bearing and gas-bearing layers in the reservoir.Using geological data and logging data obtained in drilling,the three transient section interpretations can be used to estimate seam thickness,and to evaluate quality,so as to provide criteria for design of CBM well design.
引文
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[2]崔若飞,李晋平,等.地震属性技术在煤田地震勘探中的应用研究[J].中国矿业大学学报,2002,31(3):267～270.
[3]崔若飞,陈同,等.煤层气地震勘探技术,中国煤层气勘探开发利用技术进展——2006煤层气学术研讨会论文集,2006,155～162.
[4]陈军,陈岩.地震属性分析在储层预测中的应用[J].石油物探,2011,40(3):94～99.
[5]钱进,崔若飞,等.波阻抗反演技术在煤层地震勘探中的应用[J].北京:地质出版社,中国煤层气勘探开发利用技术进展——2006煤层气学术研讨会论文集,2006.
[6]鲍祥生,尹成,等.储层预测的地震属性优选技术研究,石油物探,2006,45(1):28～33.
[7]乔夫,朱慧贞.煤田地震反射波复数道分析[J].物化探计算技术,1989,11(2):156～162.
[8]袁子龙,杨冰,王建国.薄层、薄互层地震反射时间域与频率域正演模拟研究及应用,石油物探,1996,35(3):14～20.
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