摘要
民和盆地地形起伏剧烈,地表岩性纵、横向变化大,黄土覆盖层和下伏老地层之间形成较强的波阻抗界面,地震波激发、接收条件存在严重的非一致性问题,面波、浅层折射、侧面波、散射等干扰波发育,能量强、衰减慢,导致以往原始单炮记录信噪比极低。通过多信息折直测线布设、优化激发因素、高密度地震采集、精细表层调查和静校正等多种方法的综合应用,见到了良好的效果,对盆地的构造格局与资源潜力有了新的认识。
The Minhe basin is characterized by strong fluctuation of geography and large variation of near-surface lithology both in vertical and lateral directions,forming strong wave impedance interface between the loess cover coat and the underlying old layers,resulted in seriously non-consistent issue for shooting and receiving condition of seismic waves,developing such interference waves as plane wave,shallow refractions,sidewipe and scattering characterized by strong energy and slow attenuation,all these resulte...
出处
《石油地球物理勘探》
EI
CSCD
北大核心
2008年第S1期1-4,195+5,共6页
Oil Geophysical Prospecting