煤层气勘探开发从“以工程为主导”到“预测指导下的工程”之转变
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摘要
通过多年的实践,从煤层气赋存特征、煤层气地质学理论出发,分析煤层气与天然气的根本区别。通过对天然气AVO理论的取舍,重建了煤层气AVO技术的岩石物理理论,保留了天然气AVO技术的地震波理论外壳,建立了煤层气AVO技术的地震波理论基础。将煤层气AVO技术的岩石物理基础和地震波理论基础应用于煤层气勘探开发实践中,在煤层气局部富集区预测实践中取得了较好的应用效果,实现煤层气勘探开发从"以工程为主导"到"预测指导下的工程"之转变。
Based on practices in many years,starting from CBM occurrence features and CBM geological theory,analyzed basic differences between CBM and natural gas.Through accept or reject of natural gas AVO theories,reestablished CBM AVO technique petrophysical theory,kept down natural gas AVO technique seismic wave theoretical outer covering,established CBM AVO technique seismic wave theoretical basis.Taking petrophysical basis and seismic wave theoretical basis of CBM AVO technique applied in CBM exploration and exploitation practices,preferable applying effects have been acquired in CBM local enrichment area prediction,and realized the transformation of CBM exploration and exploitation from "project dominant" to "prediction guiding project".
Based on practices in many years,starting from CBM occurrence features and CBM geological theory,analyzed basic differences between CBM and natural gas.Through accept or reject of natural gas AVO theories,reestablished CBM AVO technique petrophysical theory,kept down natural gas AVO technique seismic wave theoretical outer covering,established CBM AVO technique seismic wave theoretical basis.Taking petrophysical basis and seismic wave theoretical basis of CBM AVO technique applied in CBM exploration and exploitation practices,preferable applying effects have been acquired in CBM local enrichment area prediction,and realized the transformation of CBM exploration and exploitation from "project dominant" to "prediction guiding project".
引文
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[2]常锁亮,杨起,刘大锰,等.煤层气储层物性预测的AVO技术对地震纵波资料品质要求的探讨[J].地球物理学进展,2008,(04).
[3]彭苏萍,高云峰,杨瑞召,等.AVO探测煤层瓦斯富集的理论探讨和初步实践--以淮南煤田为例[J].地球物理学报,2005,(06).
[4]杜文凤,彭苏萍,王珂,等.瓦斯突出煤和非突出煤AVO响应的比较[J].中国煤炭地质,2010,22(6).
[5]兰凤娟,秦勇,林玉成.煤层气组分浓度异常及其地球化学成因[J].中国煤炭地质,2009,21(4).
[6]师素珍,韩毅,刘万金,等.含煤地层AVO正演模型参数优选分析[J].中国煤炭地质,2009,21(4).
[7]于赟舟.煤层气地震解释误区之一——“底辟构造”[J].中国煤田地质,1998,10(2).
[8]冯世民.二维地震方法在红格尔煤田煤层气勘探中的应用[J].中国煤田地质,2006,18(S1).
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