重新认识东营凹陷的深层构造

Renewing knowledge of deep structures of Dongying depression.

应用高分辨率重磁异常视深度滤波方法对东营凹陷布格重力异常进行视深度滤波处理,并获得由浅至深的水平切片。发现浅层(1-5km)异常主要反映Es3-Ed浅层构造;深层(6-10km)异常主要反映Es4-Ek深层构造。初步确定全区有11条较大断裂,其中对全区有重大影响的有两条,即长达110km北北西走向的惠-东大断裂及北北西走向的陈东隐蔽断裂。此外还解释出10个潜伏低凸起,为认识该区的深层构造提供了依据,并为下一步油气勘探指出了靶区。

Using high-resolution filtering method of gravity-magnetic anomalous apparent-velocity for implementing apparent velocities filtering processing of Bouguer gravitational anomaly in Dongying depression, the horizontal slices from the shallow to the deep are acquired. It is discovered that the shallow (1-5km) anomaly mainly reflects the Es3-Ed shallow structures ;the deep (6-10km) anomaly mainly reflects the Es,- Ek structures. 11 larger faults are preliminarily determined, among which there are 2 faults that have significant influence on the whole areas,i. e. 110km long and NNW orientated Hui-Dong big fault and NNW-oriented Chen-Dong subtle fault. Meanwhile. 10 hidden low-amplitude rises are interpreted, which provided a foundation for knowing the deep structures in the areas and pointed out the targets of following oil/ gas exploration.