正演照明方法在龙湾筒地区地震观测系统优化中的应用

The Seismic Observation System Optimization Based on Forward and Illumination Methods in Longwantong

辽河探区外围盆地龙湾筒地区是典型低的信噪比地区。因地震地质条件复杂多变,其深层反射能量非常弱,成像精度很低。从优化地震采集观测系统的角度来尝试解决此难题。在观测系统设计阶段,使用了基于模型正演和照明分析方法的观测参数优选技术进行道距、最大炮检距和炮排距的选择,从实际生产的地震剖面来看效果明显。

Longwantong is an area of typical low signal-to-noise ratio.Because of the complex and changeful seismic and geological conditions,its deep reflection energy is very weak,and imaging precision is very low.Thus,whether solving this problem by optimizing seismic acquisition observation system,is the focus.In the designing stage of observation system,the distance of traces,maximum shot-detector and shot rows with observation meters optimization are choosed based model forward and illumination methods.From the seismic profile,the effect is obvious.