柴达木盆地西南地区典型油田油气充注期研究

孟庆洋，桂丽黎，陈琰，袁莉，杨帆，隋立伟，白东来

doi:10.11764/j.issn.1672-1926.2015.02.0252

天然气地球科学 >

2015 , Vol. 26 >Issue 2: 252 - 260

DOI: https://doi.org/10.11764/j.issn.1672-1926.2015.02.0252

天然气地质学

柴达木盆地西南地区典型油田油气充注期研究

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1.中国石油天然气集团公司盆地构造与油气成藏重点实验室，北京100083；2.中国石油勘探开发研究院，北京100083|
3.中国石油青海油田分公司勘探开发研究院，甘肃敦煌736203；
4.大庆油田有限责任公司第一采油厂，黑龙江大庆163301；
5.东北石油大学地球科学学院,黑龙江大庆 163301

孟庆洋(1979-)，男，黑龙江鹤岗人，高级工程师，主要从事石油地质综合研究.E-mail：mqy5948@petrochina.com.cn.

收稿日期: 2014-03-18

修回日期: 2014-05-16

网络出版日期: 2015-02-10

基金资助

国家科技重大专项项目“前陆盆地油气成藏规律、关键技术及目标评价(二期)”(编号：2011ZX05003);中国石油科技开发项目“柴达木盆地基础地质深化研究与战略选区”(编号：2011E-0303)联合资助.

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Hydrocarbon Charging History of Typical Oilfields in Southwestern Qaidam Basin

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1.Key Laboratory of Basin Structure & Hydrocarbon Accumulation,CNPC,Beijing 100083,China； 2.Research Institute of Petroleum Exploration & Development,PetroChina,Beijing 100083,China； 3.Research Institute of Petroleum Exploration & Development,Qinghai Oilfield,PetroChina,Dunhuang 736202,China； 4.NO.1 Oil Production Plant Daqing Oilfield Company Ltd.,Daqing 163301,China； 5.Geoscience Institute of Northeast Petroleum University,Daqing 163301,China

Received date: 2014-03-18

Revised date: 2014-05-16

Online published: 2015-02-10

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摘要

通过包裹体岩相学、荧光光谱、红外光谱和显微测温等分析，对柴西南地区红柳泉、尕斯库勒和英东3个典型油田的油气充注期进行了研究。研究结果表明：①柴西南地区含油气包裹体发育，含油包裹体丰度(GOI)为5%~90%|②根据包裹体颜色、产状、宿主矿物等特征，可以划分为2类油气包裹体组合(黄色荧光包裹体和蓝色荧光包裹体)，反映了来自2期油气充注过程的产物|③包裹体荧光光谱的波峰范围和红外光谱的甲基含量特征均反映出蓝色荧光包裹体的成熟度高于黄色荧光包裹体。通过包裹体均一温度,结合埋藏史模拟结果，综合分析了典型油田的油气充注时间。尕斯库勒油田和红柳泉油田2期油气充注对应的时间分别约为26Ma和10Ma|而英东油田2期油气充注对应的时间分别为10Ma和5Ma。晚期构造演化与油气充注过程相匹配决定了油气的保存条件和富集程度。

关键词： 柴西南地区; 油气充注期; 英东; 红柳泉; 尕斯库勒; 流体包裹体

本文引用格式

孟庆洋，桂丽黎，陈琰，袁莉，杨帆，隋立伟，白东来 . 柴达木盆地西南地区典型油田油气充注期研究[J]. 天然气地球科学, 2015 , 26(2) : 252 -260 . DOI: 10.11764/j.issn.1672-1926.2015.02.0252

Abstract

The hydrocarbon charging history of Hongliuquan oilfield,Gasikule oilfield and Yingdong oilfield is studied in this paper by synthetically adopting fluid inclusion petrography,fluorescence spectrum,infrared spectrum,microthermometry analysis and burial history modelling.The results illustrate that grain with oil inclusions is well developed in the southwestern Qaidam Basin with the index of grain with oil inclusion (GOI) value between 5%-90%.According to the characteristics of fluorescence color,occurrence,host mineral of oil inclusion,two fluid inclusion assemblages can be classified as yellow fluorescence inclusion and blue fluorescence inclusion.The peak of fluorescence spectrum and methyl content of infrared spectrum both reflect that the maturity of blue fluorescence inclusion is higher than that of yellow fluorescence inclusion.Combined with homogenization temperature of fluid inclusions and thermal evolution analysis,it is confirmed that there were mainly two episodes of hydrocarbon charging in the southwestern Qaidam Baisn.The charging time of Gasikule oilfield and Hongliuquan oilfield is 26Ma and 10Ma,respectively.The charging time of Yingdong oilfield is separately 10Ma and 5Ma.The later hydrocarbon charging process and tectonic evolution control the preservation condition and hydrocarbon enrichment.

Key words：

Southwestern Qaidam Basin; Hydrocarbon charging history; Yingdong; Hongliuquan; Gasikule; Fluid inclusion

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