【摘要】 为解决孤北洼陷古潜山上覆地层地质构造问题,在应用Geoframe地震解释软件对该区主要目的层精细解释的基础上,通过对断层展布特征、组合样式和形成机制的分析认为,桩南断裂带受郯庐断裂左旋应力场作用影响,形成张扭帚状构造体系,各断裂围绕漩涡表现为S型顺时针排列,形成了多方向、落差各异的断裂体系。该断层具有长期活动性特点,在活动期可为油气运移提供良好通道,在断裂活动停止后容易形成构造和构造-岩性油气藏。更多还原

【Abstract】 Distribution feature, assemblage pattern and forming mechanism of the faults are analyzed based on the detailed interpretation of the main intended zones by Geoframe seismic interpretation software so as to make the geologic structure of overlying formations of buried hill in Gubei Subsag. Zhuangnan fault zone shows a tenso-shear broom structure system effected by sinistral stress field of Tanlu Fault belt. The faults are distributed in clockwise with lazy S shapes around the swirl and form a fracture system with multidirection and different downthrow. Because of the long-term activity,the fault zone will provide favorable oil-gas migration pathway in motile phase and form structural and structural-lithologic hydrocarbon reservoirs after the movements ended.更多还原