摘要
西部某黄土塬勘探区位于沙漠边缘,煤层埋藏较浅、无潜水、覆盖层横向变化大、多风沙,三维地震勘探存在着诸如压制干扰、检波器耦合、激发层位设定等难题。在充分试验的基础上确定了施工参数,并针对该区的地质特征,在资料处理时重点抓住空间属性文件的建立,三维静校正反褶积、速度分析、剩余静校正、保持振幅叠加、全三维偏移等环节,为资料解释提供了真实可信的数据体。
A western loess tableland exploration area is located at the margin of a desert. Where the coal seams are shallow buried, no groundwater, transversal variation of overburden is relatively large, sand blown by the wind is very often. Hard nuts of suppression of interference, geophone coupling, and shotpoint selling are existed in the 3D seismic prospecting. We determined operational parameters based on abundant trials. In allusion to the geological characteristics of the area, put the stress on spatial attribute files creating, 3D statics deconvolution, velocity analysis, residual statics, holding amplitude stackiug, full 3D migration in data processing. Thus provide data interpretation with authentic, credible data volume.
出处
《中国煤田地质》
2006年第3期50-53,56,共5页
Coal Geology of China
关键词
三维地震勘探
有效波
激发因素
观测系统
黄土塬
loess tableland
effective wave
triggering factor
field setup
3D seismic prospecting
