摘要
由于昆仑山前带地表条件及地下构造复杂,地震施工难度大,采集的资料品质低,噪声干扰严重,静校正问题严重,地下地层纵横向速度变化剧烈,资料处理难度较大,成像困难。针对这些难点,合理地设计采集参数,并采用灵活多变的观测系统进行采集,大大提高了原始资料的信噪比。通过有针对性地使用静校正技术、噪声压制技术以及构造成像技术,较好地解决了山地地震资料成像问题,最终剖面构造形态清晰,断层接触关系清楚。
Owing to the complex surface and subsurface conditions of Kunlun piedmont zone, seismic construction is very difficult. The data acquired is low in S/N ratio. And the noise interference is serious. In course of data processing, the problem of static correction is serious and the velocity of stratum in the subsurface is changing acutely in vertical and horizontal direction. There are many difficulties during seismic data processing. And it is difficult to image. Aiming at these difficulties, we designed the reasonable gathering parameter and used the changeable observation system to acquire data. These measures have greatly raised the S/N ratio. By way of using pertinent static technology, noise pressing technology as well as the construction imagery technology, we have solved the seismic data imagery problem in mountainous region. The constitute form is distinct and the fault contact concern is clear in the finally stack section.
出处
《西北地质》
CAS
CSCD
2004年第4期85-90,共6页
Northwestern Geology
基金
国家高新技术研究发展计划(2001AA602018)
关键词
山前带
采集技术
静校正
处理方法
piedmont zone
acquisition technology
static correction
processing method
