高青地区油气藏类型和分布特征

以渤海湾盆地东营凹陷西南缘陡坡与青城凸起过渡地区的高青油气田为例，分析了凹陷与凸起边缘地区的油气藏类型及其分布特征。研究区油气藏类型丰富多样，尤以地层圈闭油气藏发育为特征。除砂岩油气藏外，还存在大量火成岩油气藏。不同构造单元的成藏机制、油气藏类型及油气分布特征表现出明显差异，油气主要沿凹陷与凸起之间的高青大断裂富集，呈条带状分布；而远离大断裂，油气的富集程度急剧变差。研究区的油气藏类型及分布特征在渤海湾盆地凹陷边缘地区具有一定的代表性

RESERVOIR TYPES AND THEIR DISTRIBUTION CHARACTERISTICS IN GAOQING REGION

Reservoir types and distribution of the three distinct zones of fault zone, slope zone and uplift area in Gaoqing oil gas field of Bohai Bay basin have different characteristics in the formation and occurence of oil gas pools. There are plentiful types of oil gas pools, and most of them can be classified into fault traps, stratigraghic unconformity traps, pinch out traps, combination traps based on origin of the traps. According to the types of reservoir, these oil gas pools can be dividied into sandstone pools and igneous rock ones. The three main petroliferous horizons, including Dongying formation,Kongdian formation and Mesozoic, occured respectively in the fault zone,slope zone and uplift area, and they are directly covered by Guantao formation mudstone cap rock. The hydrocarbons are mainly accumulated along Gaoqing fault as a belt, and the petroliferous abundance reduced remarkably from the fault to the west part.Obviously,the accumulation and distribution of oil and gas in studied area are mainly controlled by Gaoqing fault,unconformity and Guantao formation mudstone cape rock.