宋家营南地区二维地震老资料连片精细处理技术与应用效果分析
Analysis on the Technology and Application Effect of Contiguous Fine Processing of the 2D Historical Seismic Data in the South of Songjiaying
亚东菊 1李庆峰 1张灯亮 1台立勋 1童健活1
作者信息
- 1. 河北省煤田地质局物测地质队(河北省煤炭地下气化研究中心),河北邢台 054000
- 折叠
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.
Abstract
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 tech-niques of refraction static correction,pre-stack denoising,surface consistent amplitude com-pensation,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 ob-viously improved.After drilling verification,the minimum relative error of coal seam predic-tion depth is 0.24％,which proves that the fine processing interpretation method is reasona-ble and effective,and provides more accurate geological information for subsequent coal and comprehensive gas exploration.
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Key words
Songjiaying south/data processing/refraction statics/noise before stack/ampli-tude compensation/time shift before stack引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据