准噶尔盆地玛湖凹陷斜坡区百口泉组储层流体包裹体特征及油气充注史

齐雯，潘建国，王国栋，曲永强，谭开俊，尹路

doi:10.11764/j.issn.1672-1926.2015.S1.0064

天然气地球科学 >

2015 , Vol. 26 >Issue S1: 64 - 71

DOI: https://doi.org/10.11764/j.issn.1672-1926.2015.S1.0064

天然气地质学

准噶尔盆地玛湖凹陷斜坡区百口泉组储层流体包裹体特征及油气充注史

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(1.中国石油勘探开发研究院西北分院，甘肃兰州 730020；
2.甘肃省油气资源研究重点实验室/中国科学院油气资源研究重点实验室，甘肃兰州 730000；
3.中国科学院大学，北京 100049)

齐雯(1983-)，女，甘肃金昌人，工程师，博士研究生，主要从事油气地球化学综合研究. E-mail:qi_wen@petrochina.com.cn.

收稿日期: 2015-05-20

修回日期: 2015-09-01

网络出版日期: 2015-09-20

基金资助

国家自然科学基金(编号:41402127)资助.

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Fluid Inclusion and Hydrocarbon Charge History for the Reservoir of Baikouquan Formation in the Mahu Sag,Junggar Basin

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(1.Research Institute of Petroleum Exploration and Development-Northwest,PetroChina,Lanzhou 730020,China;
2.Key Laboratory of Petroleum Resources,Gansu Province/Key Laboratory of Petroleum Resources Research,
Institute of Geology and Geophysics,Chinese Academy of Sciences,Lanzhou 730000,China;
3.University of Chinese Academy of Sciences,Beijing 100049,China)

Received date: 2015-05-20

Revised date: 2015-09-01

Online published: 2015-09-20

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摘要

采用储层岩相学观察和包裹体显微测温方法，对准噶尔盆地玛湖凹陷斜坡区百口泉组储层流体包裹体进行了详细研究，再结合油气地球化学分析和单井埋藏史恢复了研究区油气充注史。结果表明研究区百口泉组储层经历3期油气充注,2期成藏:以黑色无荧光固体沥青为代表的第Ⅰ期油气充注发生于晚三叠世前，受保存条件限制，早期充注的油气蚀变为固体沥青，并被后期成岩作用改造；第Ⅱ期油气充注发生于早侏罗世，以发黄色荧光的烃类为代表，该期原油充注强度大、范围广，玛东、玛北、玛西和玛南等斜坡区均可见；第Ⅲ期油气充注则发生于早白垩世，以发蓝色荧光的高熟油为代表，同样形成大面积油藏。

关键词： 岩相学; 油气充注期次; 油气充注史; 准噶尔盆地; 玛湖凹陷斜坡区

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齐雯，潘建国，王国栋，曲永强，谭开俊，尹路 . 准噶尔盆地玛湖凹陷斜坡区百口泉组储层流体包裹体特征及油气充注史[J]. 天然气地球科学, 2015 , 26(S1) : 64 -71 . DOI: 10.11764/j.issn.1672-1926.2015.S1.0064

Abstract

According to the observation of characteristics of reservoir petrography and micro-thermometric analysis,the fluid inclusion characteristics and hydrocarbon charging history have been studied comprehensively,combined with hydrocarbon geochemical analysis and burial history reconstruction.The result shows that there are triple hydrocarbon charging and twice petroleum accumulation.The first hydrocarbon charging marked by the bitumen without fluorescence occurred before Late Triassic Epoch and was not collected as the overlying regional cap rock had not been deposited.Thereby,the earliest charged hydrocarbon was altered to bitumen which was subjected to the later diagenetic modification.The second charging represented by the hydrocarbon with yellow fluorescence began from Early Jurassic and the petroleum was finally preserved in most of the Baikouquan reservoir because of the strong intensity and wide range of charging.The third highly mature oil filling represented by the blue fluorescence hydrocarbon happened in Early Cretaceous.

Key words： Petrography; Hydrocarbon charging stage; Hydrocarbon charging history; Junggar Basin; Mahu slope area

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