论文部分内容阅读
综合利用三维地震、测井及地球化学等资料,详细解剖断裂体系的静态和动态发育特征;运用多种剥蚀量恢复方法,求取侏罗系、白垩系及中生界剥蚀厚度,对东营凹陷中生代原型盆地格局进行恢复.研究结果表明:中生代活动的北西向断裂构成了该时期的控盆断裂体系,包括石村—平南—滨西断层,陈南断层东段两个主断裂带及王古1断层、王66断层、滨南断层等次级断裂,形成了北断南超的断陷盆地.原始地层沉积由石村—平南—滨西断层分隔,形成东、西两个沉积区,由次级断裂控制形成多个次级沉积区.东营凹陷原型盆地特征与现今盆地格局具有较大差异,整体为东、西两个主洼,东部主洼受陈南断层东段控制,次级北西向断层分割成多个次洼,呈现“盆岭相间”的格局;西部主洼由石村—平南断层控制,沉积中心位于青城凸起及花沟洼陷;该时期平方王潜山、纯化草桥鼻状构造带已经形成,林樊家凸起和青城凸起尚未形成.“,”Based on the comprehensive analysis and interpretation on 3D seismic data,logging and geochemistry profiles,the static and dynamic development characteristics of fault system are dissected in detail.With the several denudation recovery methods,the strata denudation thickness in Jurassic system,Cretaceous system and Mesozoi system was obtained and then it has been applied to restore the Dongying depression Mesozoic prototype basin pattern.The results show that fracture which is the northwest toward developing from Mesozoic activities constitutes a basin controlling fault system during that period,including Shicun-Pingnan-Binxi fault,two major faults in eastern section of Chennan fault and secondary faults,such as Wanggu 1 fault,Wang 66 fault and Binnan fault.They form a fault basin whose north side is faulted and south side overlapped.Separated by Shicun-Pingnan-Binxi fault,the original reservoir sedimentary shapes two sub-sedimentary areas,one is the east and the other is in the west.More sub-sedimentary areas are formed under the controlling of secondary faults.There exists great differences between the characteristics of Dongying depression prototype basin and the pattern of present basin:It wholly causes for two main sags in east and west.The main sag in east is controlled by eastern section of Chennan fault and divided into several sub-sags by secondary controlling sag faults,presenting a basin-alternating-with-ridge pattern.The stable sedimentation of the main sag in west is controlled by Shicun-Pingnan fault.During this period,the Pingfangwang Qian Moutain and Chunhuacaoqiao nose-like structure have formed while Linfanjia hump and Qingcheng hump have not formed yet.