油田上方的微磁异常

WEAK GEOMAGNETIC ABNORMALITY OVER OILFIELD

提取油田上方的微磁异常,以便指导油田的勘探开发,已成为我们航磁工作者的一项重要任务。1982年以来,我们先后在大庆、胜利及其他油田开展了这方面的研究,取得了较好的效果。

The results of aeromagnetic survey in Songliao, Jiyang and Qaidam Basins indicatethat weak geomagnetic abnormality occurred over the oilfields in these basins. It is sug-gested that horizontal differential quotient and residual methods are favourable ways toobtain weak geomagnetic abnormality.