二连盆地坡折带类型及其对高位域砂体的控制  

TYPES OF SLOPE BREAKS IN ERLIAN BASIN AND ITS CONTROL ON SAND-BODY OF HIGHSTAND SYSTEM TRACT

作　　者：郝琦[1] 刘震[1] 赵贤正 李春霞[1] 

机构地区：[1]中国石油大学石油天然气成藏机理教育部重点实验室,北京昌平102249 [2]中国石油华北油田分公司

出　　处：《西南石油大学学报（自然科学版）》2007年第2期92-95,共4页Journal of Southwest Petroleum University(Science & Technology Edition)

摘　　要：二连盆地坡折带按形成时间可以分为同沉积坡折带和古地貌坡折带;按成因机制可分为构造坡折带、沉积坡折带和侵蚀坡折带,构造坡折带又可分为断裂坡折带和褶皱坡折带;具有多级坡折带的特点。坡折带控制了高位体系域内扇三角洲、辫状河三角洲及湖底扇砂体的形成与分布,使得高位域砂体形成上倾尖灭和透镜体岩性圈闭。多级坡折带的不同类型坡折带上发育不同类型和形态的高位域砂体。同时,坡折带的平面展布也控制了高位域砂体的分布,形成了岩性地层油藏富集带。Erlian Basin slope breaks can be classified into syndepositional slope break and palaeomorphological slope break, and furthermore, according to origin mechanism, slope breaks can be divied into structural, sedimentary and erosional slope breaks. Structural slope break is subdivided into fault and fold slope breaks with the characters of multi-level slope breaks. Sandbodies of highstand system track include highstand, the slope breaks control forming and distribution of fan-delta, braided river delta and turbidite fans in highstand system track, which makes the sandbodies of highstand system track form updip wedge-out and lenticular lithologic traps. Slope breaks on multi-level slope breaks develop highstand sandbodies with different types and shapes. Moreover, distribution of highstand sandbodies is controlled by plane distribution of slope breaks, where rich hydrocarbon accumulation zones of lithological and stratigraphical reservoisr are formed.

关 键 词：坡折带 高位体系域 砂体 岩性地层油藏 二连盆地 

分 类 号：TE112[石油与天然气工程—油气勘探]