摘要
河套盆地为中—新生代含油气叠合盆地,已发现的油气藏具有圈闭规模大、充满度高、环生油中心分布的特点。目前临河坳陷油气探明程度很低,白垩系—古近系探明率仅为14.6%,尚具有很大的油气勘探潜力。为此,在构造、烃源岩、储层特征基础上分析油气成藏特征,进而指出下一步油气有利的勘探方向。研究认为,以断层、砂岩为主的源—储—圈对接体系是临河坳陷油气成藏和富集的主要控制因素;发育自生自储、下生上储、上生下储3种成藏组合;下一步有利勘探方向为扎格、图布东、乌兰图克和兴华西等构造。
Hetao Basin is an oil-gas bearing superimposed basin developed in the Mesozoic to the Cenozoic.Its discovered oil and gas reservoirs are characterized by large trap scale and high fullness,which are distributed around oil generating centers.At present,the exploration degree in Linhe Depression is very low,and the proved rate of Cretaceous Paleogene resources is only 14.6%,which still has great potential for oil and gas exploration.Therefore,the characteristics of oil and gas accumulation are analyzed based on structure,source rock,and reservoir characteristics to point out the further direction of oil and gas exploration.This study shows that the source-reservoir-circle connection system dominated by faults and sandstone is the main controlling factor for oil and gas accumulation and enrichment in Linhe Depression.There are three types of reservoir accumulation assemblages including self-generation and self-storage,lower generation and upper storage,and upper generation and lower storage.The further favorable exploration directions are Zage structure,Tubudong structure,Wulantuk structure,and Xinghuaxi structure.
作者
郭增虎
万照飞
王鹤华
王鹏
刘滨莹
唐美珍
GUO Zenghu;WAN Zhaofei;WANG Hehua;WANG Peng;LIU Binying;TANG Meizhen(Geological Research Center,GRI,BGP Inc.,CNPC,Zhuozhou,Heibei 072751,China)
出处
《石油地球物理勘探》
EI
CSCD
北大核心
2022年第S02期185-192,233-234,共10页
Oil Geophysical Prospecting
关键词
河套盆地
临河坳陷
成藏特征
烃源岩
生油中心
勘探方向
Hetao Basin
Linhe Depression
reservoir accumulation characteristics
source rock
oil generating center
exploration direction
