地震勘探在陕北深部煤田预查中的应用
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摘要
地震勘探在煤炭预查中发挥着重要作用。通过陕北侏罗纪煤田应用实例,结合深部煤炭预查和地震勘探的特点,对勘探过程中的各阶段进行了论述,选择合理的采集方法是保证质量的前提,根据工区特点处理过程主要运用了折射静校正、F-X域相干噪声衰减、保持振幅处理等技术,根据地震解释结果,结合钻井资料以及速度分析结果,得到了煤层构造展布、煤层厚度展布等可靠的地质成果。认为通过选用合理的施工方法,在陕北复杂地表地质条件下可获得较好的勘探资料,充分利用油田地震勘探成熟的处理解释技术可以提高地震地质解释的精度,运用波组抗反演技术,可以进行煤层厚度的预测。
The pre-seismic prospecting plays an important role in investigating coal field.Through the Jurassic in northern Shaanxi Coalfield applications,various phases of the exploration process are discussed in combination with the prospect of deep coal field and the characteristics of seismic exploration.Selecting a reasonable collection method is the premise to assure good quality.According to the characteristics of main working area,we used the refraction static correction,F-X domain coherent noise attenuation,and amplitude-keeping technologies.According to the results of seismic interpretation and in combination with drilling data as well as the result of speed analysis,the distribution of structures and thickness of coal seams has been obtained.By selecting a reasonable method available for better exploration data under complex geological conditions in northern Shaanxi,making full use of oil field seismic processing and interpretation of sophisticated technology,we can improve the accuracy of seismic geological interpretation.In addition,the use of the inversion technology of wave impedance can be forecast the thickness of coal seams.
The pre-seismic prospecting plays an important role in investigating coal field.Through the Jurassic in northern Shaanxi Coalfield applications,various phases of the exploration process are discussed in combination with the prospect of deep coal field and the characteristics of seismic exploration.Selecting a reasonable collection method is the premise to assure good quality.According to the characteristics of main working area,we used the refraction static correction,F-X domain coherent noise attenuation,and amplitude-keeping technologies.According to the results of seismic interpretation and in combination with drilling data as well as the result of speed analysis,the distribution of structures and thickness of coal seams has been obtained.By selecting a reasonable method available for better exploration data under complex geological conditions in northern Shaanxi,making full use of oil field seismic processing and interpretation of sophisticated technology,we can improve the accuracy of seismic geological interpretation.In addition,the use of the inversion technology of wave impedance can be forecast the thickness of coal seams.
引文
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宋国良,冯玉芬.煤田高分辨率地震勘探方法[J].勘探地球物理进展,2002,24(4):32-34.Song Guoliang,Feng Yufen.High resolution seismic tech-nology in coal exploration[J].Progressin ExplorationGeophysics,2002,24(4):32-34.
徐成明,王云.地表复杂地区煤田地震勘探方法及效果[J].物探与化探,2001,25(6):437-442.Xu Chengming,Wang Yun.Coalfield seismic explorationmethod in surface complex areas and its effects[J].Geophysical&Geochemical Exploration,2001,25(6):437-442.
徐明才,高景华.深部地震资料的处理和解释方法[J].物探化探计算技术,1999,21(2):56-63.Xu Mingcai,Gao Jinghua.The processing and interplatationmethod of depth seismologic data[J].Computing Tech-niques for Geophysical and Geochemical Exploration,1999,21(2):56-63.
孙渊.陕北煤田地震数据处理技术初探[J].煤炭科学技术,2007,35(5):92-96.Sun Yuan.Discussion on processing technology for seismicdata of North Shaanxi Coal Field[J].Coal Science andTechnology,2007,35(5):92-96.
朱芳香.地球物理探测在陕北侏罗纪煤田勘探中的应用[J].陕西煤炭,2001(4):36-39.Zhu Fangxiang.The application of geophysics exploration inShaanbei Jurassic Coal Field[J].Shaanxi Coal,2001(4):36-39.
邓国成.地震勘探在深部找煤中的应用[J].西部探矿工程,2006,18(11):112-114.Deng Guocheng.Seismic exploration in deep to find the ap-plication of coal[J].Western Exploration Engineer-ing.2006,18(11):112-114.
李正越.地震勘探技术在深部找煤中的应用[J].中国煤炭地质,2008,20(11):67-68.Li Zhengyue.Application of Seismic Prospecting Technolo-gy in Deep Part Coal Looking[J].Coal Geology of Chi-na.2008,20(11):67-68.
宋春山.地震勘探在煤炭预查中的应用[J].中州煤炭,2007,(5):38-39.Song Chunshan.Application of Seismic Prospecting Tech-nology in deep part Coal Field[J].Zhongzhou Coal.2007,(5):38-39.
李国发.复杂地表煤田地震资料处理的关键技术研究[J].中国矿业大学学报,2009,38(1):61-66.Li Guofa.Research on Key Techniques for Coalfield SeismicData Processing in the Rugged Topography Areas[J].Journal of China University of Mining&Technology,2009,38(1):61-66.
宋国良,冯玉芬.煤田高分辨率地震勘探方法[J].勘探地球物理进展,2002,24(4):32-34.Song Guoliang,Feng Yufen.High resolution seismic tech-nology in coal exploration[J].Progressin ExplorationGeophysics,2002,24(4):32-34.
徐成明,王云.地表复杂地区煤田地震勘探方法及效果[J].物探与化探,2001,25(6):437-442.Xu Chengming,Wang Yun.Coalfield seismic explorationmethod in surface complex areas and its effects[J].Geophysical&Geochemical Exploration,2001,25(6):437-442.
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