埕岛油田油气藏类型及成藏模式  

TRAP TYPES AND HYDROCARBON ACCUMULATION PATTERNS IN CHENGDAO OIL FIELD

作　　者：高喜龙[1] 杨鹏飞[2] 等 

机构地区：[1]中国科学院广州地球化学所，广州510240 [2]胜利石油管理局，山东东营257237

出　　处：《中国海上油气（地质）》2000年第2期104-107,共4页China Offshore Oil and Gas(Geology)

摘　　要：埕岛油田的结晶基底为太古界花岗片麻岩，沉积基底为古生界碳酸盐岩和中生界碎屑岩，埕岛油田是在潜山背景上发育的大型披覆构造，发育了潜山，构造，岩性，地层及岩性－构造等多种类型油气藏，主要含油层系为馆陶组上段，主要油气藏类型为大型披覆背斜油气藏，其成藏模式具有沿二级构造复式聚集的特点，根据油气聚集的构造位置，成藏模式可分为凸起主体，凸起陡坡，凸起缓坡及凹间高地聚集油气等4种类型，作为发育大型披覆背斜油气藏的凸起主体，良好的成藏条件决定了它成为埕岛油田最主要的油气聚集区，总结研究这种复式油气聚集特征，对于指导埕岛及其外围地区的勘探具有十分重要的意义。Chengdao oil field has a crystalline basement of Achaean granire gneiss and a sedimentary basement of Paleozonic carbonate rock or Mesozonic clastic rock. It is a great drape anticline in a buried hill setting, where various types of trap have developed, such as buried hill, structural, lithologic and stratigraphic structural traps. The upper member of Guantao formation is the main oil bearing series, the large drape anticline is the main type of oil traps, and the pattern of hydrocarbon accumulation is characterized by multiple trapping along secondary structures. In the light of structural positions, the hydrocarbon accumulation patterns can be divided into four types, including uplift's main part, uplift's steep slope, uplift's gentle slope and high between sags. The large drape anticline develops in the main part of uplift, which has good conditions for hydrocarbon acumulation and is the most important area of production. For future exploration in Chengdao and its surrounding areas, it is very helpful to study this mechanism of multiple trapping.

关 键 词：埕岛油田 油气藏 类型 成藏模式 披覆背斜 凸起 

分 类 号：P618.130.2[天文地球—矿床学] TE12[天文地球—地质学]