高精度重磁资料在松辽盆地古龙断陷火山岩气藏勘探中的应用

Application of high-precision gravity and magnetic data in exploration of volcanic gas reservoir in Gulong fault depression of Songliao basin

本文在分析钻井、物性资料的基础上,利用高精度重磁力、地震资料,采用重磁力弱信息提取、重力异常剥离、重磁震联合反演解释等技术,实现重磁异常分离、提取并增强了与火山岩有关的重磁异常信息,综合研究了区内营城组火山岩的发育特征。研究结果表明,区内营城组火山岩分布广泛,岩性主要以酸性火山岩为主。火山岩主要沿主控断裂呈带状分布,岩相以爆发相居多,磁异常形态主要呈圆形、椭圆形。

Based on analyzing drilling and physical data,the paper realized separation of gravity and magnetic anomalies,picked up and strengthened the data of gravity and magnetic anomalies relative to volcanic rock and synthetically studied the developing feature of Yingcheng Formation volcanic rock in the area by pickup of weak gravity and magnetic data,stripping of gravity anomaly and joint inversion and interpretation of gravity,magnetic and seismic data.The studied results showed that the distribution of Yingche...