煤矿采区三维地震勘探资料的反演及其岩性解译实例
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摘要
测井能提供地下介质较准确的岩性参数和具有较高的垂向分辨率,但只局限于井的附近,而地震勘探有较密的横向采样,对岩性的横向变化敏感。利用三维地震资料具有大面积密集采集信息的优势,从平面和立体角度研究煤层厚度及顶底板的岩性变化,推断煤系地层岩性在平面上的变化情况,大大提高三维地震资料的纵、横向分辨率及对地质问题的研究程度。本文介绍了Strata反演软件的原理和流程,通过实际煤矿采区地震勘探资料的处理与资料分析,在大量统计的基础上建立了不同岩性与波阻抗之间的解释标准,说明了在岩性描述中的应用与成果。
It is well known that logging can provide relatively reliable lithological parameters of the subsurface medium and has a higher vertical resolution,but it is only limited to the well nearby,for seismic exploration has a denser lateral sample and is sensitive to lateral lithological variations.The 3-D seismic data are used to have the advantages of collecting the large-scale information.The lithology changes of the coal seam thickness and roof or floor are studied from the points of plane and 3-D angles to deduce the changes of the coal strata lithology on the plane,which greatly improves the seismic data vertical and horizontal resolution and the studies of the geological problems.This paper describes the principle and process of the software Strata inversion.Through processing and analyzing coal mining seismic data,the interpretation standards between lithology and wave impedance are established on the basis of the statistics.The application and results are explained in the lithological descriptions.
It is well known that logging can provide relatively reliable lithological parameters of the subsurface medium and has a higher vertical resolution,but it is only limited to the well nearby,for seismic exploration has a denser lateral sample and is sensitive to lateral lithological variations.The 3-D seismic data are used to have the advantages of collecting the large-scale information.The lithology changes of the coal seam thickness and roof or floor are studied from the points of plane and 3-D angles to deduce the changes of the coal strata lithology on the plane,which greatly improves the seismic data vertical and horizontal resolution and the studies of the geological problems.This paper describes the principle and process of the software Strata inversion.Through processing and analyzing coal mining seismic data,the interpretation standards between lithology and wave impedance are established on the basis of the statistics.The application and results are explained in the lithological descriptions.
引文
[1]李庆忠.走向精确勘探的道路——高分辨率地震勘探系统工程剖析[M].北京:石油工业出版社,1994.
[2]姚姚,詹正彬,钱绍湖.地震勘探新技术与新方法[M].武汉:中国地质大学出版社,1991.
[3]崔若飞,孙学凯,崔大尉.地震反演——煤田地震勘探的新进展[J].中国煤炭地质,2008,20(6):49～52.
[4]许永忠,崔若飞,潘冬明,等.煤田采区火成岩分布地震反演技术的应用研究[J].中国矿业大学学报,2006,35(2):265～268.
[5]钱进,崔若飞.波阻抗反演预测煤层岩浆侵入范围[J].中国煤炭地质,2010,22(1):58～61.
[6]李仁海,崔若飞,毛欣荣,等.利用岩性解释方法圈定岩浆岩侵入煤层范围[J].地球物理学进展,2008,23(1):242～248.
[7]李仁海,崔若飞,毛欣荣.利用岩性反演和谱分解技术确定岩浆岩侵入煤层范围[J].物探化探计算技术,2008,30(2):105～109.
[8]赵虎,崔若飞.基于模拟测井资料的波阻抗反演[J].物探化探计算技术,2007,29(3):197～199.
[9]刘伍,崔若飞,高级.波阻抗反演在煤炭资源勘探中的应用[J].中国煤炭地质,2008,20(6):59～62.
[10]杨立强.测井约束地震反演综述[J].地球物理学进展,2003,18(3):530～534.
[2]姚姚,詹正彬,钱绍湖.地震勘探新技术与新方法[M].武汉:中国地质大学出版社,1991.
[3]崔若飞,孙学凯,崔大尉.地震反演——煤田地震勘探的新进展[J].中国煤炭地质,2008,20(6):49～52.
[4]许永忠,崔若飞,潘冬明,等.煤田采区火成岩分布地震反演技术的应用研究[J].中国矿业大学学报,2006,35(2):265～268.
[5]钱进,崔若飞.波阻抗反演预测煤层岩浆侵入范围[J].中国煤炭地质,2010,22(1):58～61.
[6]李仁海,崔若飞,毛欣荣,等.利用岩性解释方法圈定岩浆岩侵入煤层范围[J].地球物理学进展,2008,23(1):242～248.
[7]李仁海,崔若飞,毛欣荣.利用岩性反演和谱分解技术确定岩浆岩侵入煤层范围[J].物探化探计算技术,2008,30(2):105～109.
[8]赵虎,崔若飞.基于模拟测井资料的波阻抗反演[J].物探化探计算技术,2007,29(3):197～199.
[9]刘伍,崔若飞,高级.波阻抗反演在煤炭资源勘探中的应用[J].中国煤炭地质,2008,20(6):59～62.
[10]杨立强.测井约束地震反演综述[J].地球物理学进展,2003,18(3):530～534.
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