复杂构造二维地震精细速度分析与应用  

2D Seismic Fine Velocity Analysis and Application in Complex Structural Areas

作　　者：李红梅[1] 李建国[1] 马海兵[1] 孙渊[2] 于光明[3] Li Hongmei;Li Jianguo;Ma Haibing;Sun Yuan;Yu Guangming(Shanxi Provincial Geophysical and Geochemical Prospecting Institute,Yuncheng,Shanxi 044004;School of Geological Engineering and Surveying & Mapping,Chang’an University,Xi’an,Shaanxi 710054;Institute of Geology and Geophysics,CAS,Beijing 100029)

机构地区：[1]山西省地球物理化学勘查院,山西运城044004 [2]长安大学地测学院,西安710054 [3]中国科学院地质与地球物理研究所,北京100029

出　　处：《中国煤炭地质》2019年第2期66-71,共6页Coal Geology of China

摘　　要：山西省山阴北周—怀仁鹅毛口页岩气煤层气二维地震勘查区,位于大同新生代断陷盆地的北部,断裂构造复杂。勘查区仅有2个钻孔可用于资料分析与研究,可借鉴的地质成果十分有限。在资料处理过程中运用各向异性速度分析处理获得速度谱信息,结合已有测井速度资料对地震速度进行校正与标定,获得高精度的速度场,保证了构造解释及构造成图精度。经后期钻探验证,目的层位及深度预测精度较高,地质勘探效果明显,二维地震资料精细速度分析结合井控速度约束,应用效果良好。The Shanxi Province Beizhou of Shanyin–Emaokou of Huairen shale gas and CBM 2D seismic prospecting area is situated in the north part of Datong Cenozoic fault basin with complex faulted structures. In the prospecting area has only data from 2 boreholes can be used to analyze and research, geological results can be used for reference are very limited. During the data processing, through anisotropic velocity analysis obtained velocity spectrum information, combined with available well logging velocity data have carried out seismic velocity correction and calibration, obtained high precision velocity field, ensured structural interpretation and mapping accuracy. After succeeding drilling verification has shown that accuracies of target horizon and depth prediction are rather high with obvious geological exploration effect. Thus the 2D seismic data fine velocity analysis combined with well controlled velocity constraint has good applied effect.

关 键 词：地震勘探 速度分析 各向异性 时深转换 

分 类 号：P631.4[天文地球—地质矿产勘探]