摘要
苏北永安高精度三维工区地表及近地表地震地质条件复杂,存在较严重的静校正问题。而存在低降速带的永安地区地震资料并不适合高程静校正的应用,无法提高静校正计算的精度。层析成像静校正技术可适应复杂的地表情况,通过建模准确地计算出静校正量,然后对地震资料进行处理。该技术在永安工区的应用,消除了三洋河流域近地表静校正量的影响,提高了地震资料的信噪比和成像效果。
In high-accuracy 3D working area of Yong＇an in northern Jiangsu,there are serious static correction problems due to complex surface and near-surface seismic geologic conditions.And seismic data in the area with low deceleration zone are not suitable for the application of elevation static correction,which can not improve precision of static correction.Tomographic static correction technology may be adapted to the complicated earth＇s surface.By building a model,which calculated the static value precisely,the seismic data were processed.Through the application of the technique in Yong＇an area,influence of the near-surface static values of Sanyan river basin was eliminated,and the S/N ratios and imaging effect of the seismic data were enhanced
出处
《复杂油气藏》
2010年第4期43-46,共4页
Complex Hydrocarbon Reservoirs
关键词
永安地区
复杂地表
地震数据处理
层析成像
静校正
速度模型
低降速带
初至
Yong＇an area
complex surface
seismic data processing
tomographuic imaging
static correction
velocity model
low deceleration zone
first break
