摘要
为了明确松辽盆地三肇凹陷泉头组扶余油层致密油气充注期次及其成藏贡献,综合利用薄片鉴定、包裹体测温、荧光光谱等方法,对扶余油层微观油包裹体及其伴生盐水包裹体进行了研究,并结合储层埋藏史对该地区油气充注期次及其成藏贡献进行了探讨。研究结果表明:三肇凹陷扶余油层油气具有多期充注成藏特征,总体上表现为两期原油充注成藏,第1期发生在嫩江组末期77~74 Ma期间,对应于第1幕充注;第2期发生在明水组末期67~65 Ma期间,对应第2幕、第3幕和第4幕充注。三肇凹陷扶余油层第2期(明水组末期)致密油充注对现今油藏贡献率为83%,第1期(嫩江组末期)致密油充注贡献率为17%;可见明水组末期充注的原油对今油藏的贡献更大。
In order to clarify the tight oil and gas charging periods and their contribution to the formation of the Cretaceous Fuyu oil layer in the Sanzhao sag of the Songliao basin,a comprehensive study was conducted on the micro-oil inclusions and their associated aqueous inclusions in the Fuyu oil layer using methods such as thin section identification,inclusion temperature measurement,and fluorescence spectroscopy.The charging periods and accumulation contribution of oil and gas in this area were discussed in combination with reservoir burial history.The results show that the oil and gas in Fuyu oil layer of Sanzhao sag have the characteristics of multi-stage charging and accumulation,which is generally characterized by two stages of crude oil charging and accumulation.The first stage occurred in the period of 77-74 Ma at the end of Nenjiang Formation,corresponding to the first stage of charging.The second episode occurred during 67-65 Ma at the end of the Mingshui Formation,corresponding to the second,third and fourth episodes.The tight oil filling in the second stage(the end of Mingshui Formation)of Fuyu oil layer in Sanzhao sag contributes to the current reservoir,with a contribution rate of 83%,and the contribution rate of the first stage(the end of Nenjiang Formation)of tight oil filling is 17%.After comparing the contribution of oil filling in the two periods,it is considered that the crude oil filled in the late Mingshui period contributes greatly to the present reservoir.
作者
斯尚华
喻意
王小龙
王新星
赵玉涛
吴伟涛
Si Shanghua;Yu Yi;Wang Xiaolong;Wang Xinxing;Zhao Yutao;Wu Weitao(School of Earth Sciences and Engineering,Xi’an Shiyou University,Xi’an 710065,China;Shaanxi Key Laboratory of Petroleum Accumulation Geology,Xi’an 710065,China;No.4 Oil Production Plant of Changqing Oilfield Company,PetroChina,Jingbian 718500,Shaanxi,China;No.5 Oil Production Plant of Changqing Oilfield Company,PetroChina,Dingbian 718600,Shaanxi,China;Exploration and Development Research Institute of Jilin Oilfield Co.,Ltd.,Songyuan 138000,Jilin,China)
出处
《吉林大学学报（地球科学版）》
CAS
CSCD
北大核心
2024年第5期1457-1467,共11页
Journal of Jilin University：Earth Science Edition
基金
陕西省科技厅重点研发计划项目(2023-YBGY-077)。
关键词
流体包裹体
致密油气
充注期次
成藏贡献
扶余油层
三肇凹陷
fluid inclusions
tight oil and gas
charging periods
accumulation contribution
Fuyu oil layer
Sanzhao sag
作者简介
斯尚华(1981-),男,副教授,博士,主要从事油气成藏地质方面的研究,E-mail:sishanghua0724@qq.com。
