In seismic exploration, subsurface salt dome, as a high-velocity geologic body, brought about a series of problems to ordinary processing in time domain and interpretation, for example, false image of subsalt structure and abnormal stack velocity field.
在地震勘探中,地下盐丘作为一个高速地质体会给常规时间域处理和解释带来一系列的问题,如盐下构造的假象和叠加速度场异常等。
The Lower Permian of uplifts in east merging of littoral Caspian Sea basin is a set of giant thickness of salt beds and multiple salt domes with significant thickness developed locally, in which the thickness is from 200m to 3500m.
滨里海盆地东缘隆起带下二叠统是一套巨厚的膏盐层,局部发育多个巨厚盐丘,厚度从200～3500m不等。
There are massive salt domes of great thickness,which ranges from several dozen meters to 3,700 meters,in pre-salt Carboniferous carbonate reservoirs of the Pre-Caspian Basin.
由于盐丘和围岩间存在巨大的速度差异,因此导致盐体本身和下伏地层在常规地震资料中出现反射品质降低、构造失真、畸变(如盐下石炭系目的层地震反射层在盐丘部位出现构造上拉现象),消除盐层的影响是含盐油气盆地勘探的重要课题。
The topics included point-source/point-receiver, multiples, directional illumination, salt imaging, time-lapse seismic, rock physics, and non-seismic technologies.
这些技术热点包括:点震源/点接收、多次波处理、定向照明分析、盐丘成像、时移地震、岩石物理以及非地震技术等。