在盆地山岭相间地区的勘探中,探查隐蔽的断层或削蚀圈闭时,重力勘探方法是非常重要的手段。事实上,在铁路谷地中三个油田:鹰泉、阱泉和最近在鹰泉北面的发现都存在明显的重力异常。铁路谷地的石油主要产自白垩始新世和渐新世的断层或削蚀圈闭储集层中。这些圈闭都处于盆地边界主要断层带的下落翼上的向斜海湾相地层上。这种含油气的海湾相地层在第三纪等厚线图上表现为相对“厚”的部分。而在第三纪“厚”的部分出现局部重力低,并在盆地边缘主要断层带上出现线性重 Gravity exploration methods are very important tools for exploration of hidden faults or erosion in the exploration of the mountainous and mountainous regions of the basin. In fact, there are clear gravitational anomalies in the three fields in the Railway Valley: the eagle springs, the trap springs and the recent discovery in the eagle springs. The oil in the Railway Valley is mainly derived from the Cretaceous Eocene and Oligocene fault or corroded trapped reservoirs. These traps are all on the syncline bay facies on the fallen wing of the main fault zone on the basin boundary. This oil-bearing Gulf facies appears as a relatively “thick” part of the isometric map of the Tertiary. In the Tertiary “thick ” part of the local gravity is low, and in the main fault zone on the edge of the basin linear weight