%0 Journal Article
%T 柴达木盆地西部英东地区油气成藏过程<br>Hydrocarbon Charge History of Yingdong 〇ilfield, Western Qaidam Basin
%A 桂丽黎
%A 刘可禹
%A 
%A 柳少波
%A 孙维凤
%A 孟庆洋
%A 袁 莉
%A 吴 凡
%A 郝加庆&lt
%A br&gt
%A Gui Lili
%A Liu Keyu''·
%A Liu Shaobo
%A Sun Weifeng
%A Meng Qingyang
%A Yuan Li'
%A Wu Fan'
%A Hao Jiaqing
%J 地球科学(中国地质大学学报)
%D 2015
%R 10.3799/dqkx.2015.073
%X 柴达木盆地西部英东地区多期构造运动导致油气分布复杂,勘探难度大.采用油气地球化学、流体包裹体、定量荧光以 及傅里叶红外光谱等方法系统分析英东地区油气成藏演化过程.研究表明:(1)英东地区新近系储层发育黄色和蓝色荧光两类 油包裹体和天然气包裹体,黄色荧光和蓝色荧光油气包裹体对应两期油气充注时间分别为12Ma和5Ma.(2)现今油藏原油 具有同源-低熟的特点,黄色荧光油包裹体成熟度较低与现今油藏原油特征相似,是现今油藏的主要贡献者.(3)蓝色荧光油 包裹体的成熟度较高,蓝色荧光油包裹体和气烃包裹体是早期低熟原油沿后期构造产生的断层疏导体系向上调整运移至浅 层分馏和脱气的产物.通过以上分析明确了英东油藏经历了下油砂组(N12 )沉积末期(12Ma)的低熟原油充注和上油砂组(N22 ) 沉积末期(5Ma)至今油气调整与改造的成藏过程,与喜山期主要构造活动期有很好的对应关系,反映构造活动对油气成藏具 有重要控制作用.<br>The Yingdong oilfield, western Qaidam basin, is an important petroleum exp1oration front in the basin. However, the distribution of oi1-gas-water is complex due to the complex structures and the pervasive faulting in the reservoirs and the pe- troleum accumulation process is sti11 to be probed in detai1. The petroleum accumulation process in the area was investigated by using an integrated grain fluorescence, fluid inclusion and organic geochemica1 analyses in this study. The results show fo11ows: (1) There were two episodes of oi1 charge in N1-N2 , as reflected by three types of hydrocarbon inclusions, occurred in around 12 Ma and5 Ma, respectively. (2) The current oi1 accumulations in the oilfield derived from upward migration of palaeo-oi1 res- ervoirs in the depth are from the same sources. (3) The QGF index which islarger than2 and the deve1opment of ye11ow fluo- rescent hydrocarbon inclusions with1ow mature crude oi1 indicate that there existed crude oi1 with1ow maturity recharge in the early stage. Such crude oi1 came from the same1ow mature oi1 source and there is no high mature oi1 in the source. The decrea- sing of light component with increasing buried depth indicates that the blue fluorescent hydrocarbon inclusions and gas hydro- carbon inclusions resulted from thelate tectonic activity and the fault adjusted upward migration degassing channe1 system. The Yingdong oilfield has great exp1oration potentia1 because of the inheritance structura1 deve1opment and the occurrence of two ep- isodes of hydrocarbon accumulations
%K 英东油田
%K 油藏演化
%K 定量颗粒荧光技术
%K 流体包裹体
%K 红外光谱
%K 石油地质
%K 柴达木盆地.&lt
%K br&gt
%K Yingdong oilfield
%K hydrocarbon charge history
%K quantitative grain fluorescence
%K fluid inclusion
%K infrared spectrosco- py
%K petroleum geo1ogy
%K Qaidam basin.
%U http://www.earth-science.net/WebPage/Article.aspx?id=3081