摘要
宋家营南地区位于华北地区开平向斜东南翼,地质构造复杂,煤炭资源丰富。然而早期地震资料分辨率较低,数据处理技术有限,部分煤炭资源与地质构造未能得到充分识别。本文采用折射波静校正、叠前去噪、地表一致性振幅补偿、组合反褶积、高精度速度分析和叠前时间偏移等技术,对宋家营南地区三个区块的二维地震老资料进行连片处理。并在此基础上开展地震精细解释,对地层和构造有了重新认识,尤其是三区闭合差较大的接壤地带,分辨率和信噪比得到了明显提高。经过钻孔验证,煤层预测深度最小相对误差为0.24%,证明本次精细处理解释手段合理有效,为后续煤炭和综合气勘探提供了更准确的地质信息。
South area of Songjiaying is located in the southeast wing of Kaiping syncline in North China,with complex geological structure and abundant coal resources.However,due to the low resolution of early seismic data and limited data processing technology,some coal resources and geological structures have not been fully identified.In this paper,the techniques of refraction static correction,pre-stack denoising,surface consistent amplitude compensation,combined with deconvolution,high-precision velocity analysis and pre-stack time migration are used to process the 2D historical seismic data of three blocks in the south Songjiaying area.On this basis,the detailed seismic interpretation is carried out,and a new understanding of the stratum and structure is obtained,especially in the border zone with large closure difference among the three areas,the resolution and signal-to-noise ratio are obviously improved.After drilling verification,the minimum relative error of coal seam prediction depth is 0.24%,which proves that the fine processing interpretation method is reasonable and effective,and provides more accurate geological information for subsequent coal and comprehensive gas exploration.
作者
亚东菊
李庆峰
张灯亮
台立勋
童健活
Ya Dongju;Li Qingfeng;Zhang Dengliang;Tai Lixun;Tong Jianhuo(Geological Survey Team of Hebei Coalfield Geological Bureau(Hebei Underground Coal Gasification Research Center),Xingtai Hebei 054000,China)
出处
《工程地球物理学报》
2024年第2期327-337,共11页
Chinese Journal of Engineering Geophysics
关键词
宋家营南
资料连片处理
折射静校正
叠前去噪
振幅补偿
叠前时间偏移
Songjiaying south
data processing
refraction statics
noise before stack
amplitude compensation
time shift before stack
