准噶尔盆地腹部隐蔽油气藏类型与成藏主控因素  

FORMATION OF THE SUBTLE RESERVOIRS AND THEIR EXPLORATION IN THE CENTRAL JUNGGAR BASIN

作　　者：牟琨[1] 云金表 

机构地区：[1]西北大学地质学系,西安710069 [2]中国石油化工股份有限公司石油勘探开发研究院,北京100083

出　　处：《石油实验地质》2010年第2期154-158,共5页Petroleum Geology & Experiment

基　　金：国家攻关项目(2008ZX05002-002)

摘　　要：准噶尔盆地腹部现今处于前陆盆地坳陷中。侏罗纪车莫古隆起的发育,一方面为早期成藏提供了构造背景,另一方面古隆起控制了河流三角洲砂体发育,不整合、地层超覆的分布。故本区形成了地层、岩性、断层三者复合的隐蔽油气藏发育区。后期剧烈的掀斜,导致古隆起周围圈闭类型、圈闭有效性发生变化或减弱。油藏多经历了后期调整、晚期充注,且类型多样。腹部地质背景及其演化,决定了油气形成与分布主要与古隆起及演化有关。The deep sag was located in the depression of the Junggar foreland basin.The early hydrocarbon accumulation in reservoirs,the development of fluvial-delta sand body and the distribution of unconformity and sequence overlaps were controlled by the Chepaizi-Mosuowan paleo-uplift formed in the Jurassic.The subtle reservoirs consisted of stratigraphic,lithologic,faults or their combination were developed in the area.Due to late strong tilting,trap types and their validity around the paleo-uplift were changed.The reservoirs underwent late modification and late hydrocarbon recharge and various kinds of reservoirs were formed.Hydrocarbon formation and distribution in the deep sag was controlled by the paleo-uplift.

关 键 词：输导体系 油藏类型 成藏模式 准噶尔盆地腹部 

分 类 号：TE122.3[石油与天然气工程—油气勘探]