渤中凹陷油气晚期快速成藏机理研究——以黄河口凹陷BZ34断裂带为例

Late and Rapid Petroleum Accumulation Pattern in Bozhong Depression By Taking BZ34 Fault Zone in Huanghekou Depression for Example

应用单井及二维盆地模拟、油源对比、流体包裹体均一温度分析等方法和技术对渤中坳陷黄河口凹陷烃源岩生烃演化史、BZ34断裂带油气运移通道、油气来源和充注历史进行了研究,提出在烃源岩晚期快速埋藏、快速成熟,晚期活动断裂发育的背景下,BZ34断裂带油气充注为断裂贯通型晚期快速成藏模式。指出活跃烃源岩与晚期活动断裂贯通型输导格架是油气晚期快速成藏的2大主控因素。

The classical petroleum geology has ever suggested that the petroleum migration & accumulation is a slow process and the late tectonic activity is one of the major factors for oil & gas reservoir failure.However,at the late stage,rapid petroleum accumulation patterns of BZ34 fault zone are brought forward in the background of the source rock bury and fast mature and the late active rupture are well developed.The history of source rock maturation,the pass-through passage system,the hydrocarbon source and its displacement history of BZ34 fault zone are studied by means of single-well & 2 Dimensional basin modeling,oil-to-source correlation and the analysis of fluid inclusion.It is pointed out that the 'active' source rock and the late active rupture are two controlling factors of the late and rapid petroleum accumulation pattern.