断陷盆地成藏动力系统特征与油气分布规律——以苏北盆地为例  

Dynamic hydrocarbon accumulation systems and hydrocarbon distribution in rifted basin: a case of North Jiangsu basin

作　　者：侯建国[1,2] 林承焰[1] 姚合法[1] 张小莉[1,3] 

机构地区：[1]石油大学 [2]江苏油田分公司 [3]西北大学

出　　处：《中国海上油气（工程）》2004年第6期361-364,共4页China Offshore Oil and Gas

基　　金：山东省自然科技基金项目 (编号Y2 0 0 0F0 1);中国石化集团公司重大科研攻关项目"苏北盆地第三系油气成藏动力学机理及勘探目标研究"资助部分成果

摘　　要：以苏北盆地为例 ,探讨了断陷盆地成藏动力系统类型与油气分布的关系。苏北盆地第三系成藏动力系统可以划分为 3种类型 ,它们具有不同的油气运聚特征和分布规律。深凹 斜坡带E2 d E2 s成藏动力系统油气主要分布在深凹带 ,烃源岩成熟度和盖层条件控制油气的分布 ;深凹 斜坡带K2 t E1f成藏动力系统油气主要分布在斜坡带和生烃次凹之间的构造高带上 ,侧向遮挡是油气成藏的关键 ;断阶 凸起带成藏动力系统油气主要分布在控凹断层上升盘的圈闭中 ,断层活动期与油气运移期的匹配关系控制油气藏的形成 ,储盖组合控制油气的富集。Taking North Jiangsu basin as a case, this paper has discussed relationships between the types of dynamic hydrocarbon accumulation system and hydrocarbon distribution in rifted basin. There are three types of Tertiary dynamic accumulation system in North Jiangsu basin, which are different in hydrocarbon migration, accumulation and distribution. For E 2d?E 2 s accumulation system in the deep_depression slope belt, hydrocarbon mainly occurs in the deep depression, and it's distribution is controlled by source maturity and seals. For K 2t?E 1f accumulation system in the same belt, hydrocarbon mainly accumulates along a structure zone between the slope and the hydrocarbon generation sub_depression, and a lateral barrier is crucial to hydrocarbon accumulation. For the accumulation systems in the fault terrace_uplift belt, hydrocarbon mainly occurs in upside traps of the depression_controlled fault, and hydrocarbon accumulation is controlled by a match between hydrocarbon migrations and fault activities and a combination of reservoir rocks with seal rocks.

关 键 词：成藏动力系统 断陷盆地 油气分布规律 苏北盆地 斜坡带 储盖组合 断层活动 生烃 油气成藏 烃源岩成熟度 

分 类 号：TE122[石油与天然气工程—油气勘探] P618[天文地球—矿床学]