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地质科学  2012, Vol. 47 Issue (1): 202-210    DOI:
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纯油条件下合成碳酸盐岩烃类包裹体及其捕获机制探讨
葛云锦1,2, 陈勇2, 周瑶琪2, 周振柱2, 王艳1
1. 延长石油集团有限责任公司研究院 西安 710075;
2. 中国石油大学(华东)地球科学与技术学院 山东青岛 266555
Synthesizing hydrocarbon inclusions in carbonate with pure oil and discussion of its trapping mechanism
Ge Yunjin1,2, Chen Yong2, Zhou Yaoqi2, Zhou Zhenzhu2, Wang Yan1
1. Research Institute of Yanchang Petroleum(GROUP)Co. , Ltd. , Xi'an 710075;
2. School of Geosciences, China University of Petroleum China, Qingdao, Shandong 266555
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摘要 设计了在接近实际储层温压条件下,流体介质为纯原油时在冰洲石中合成烃类包裹体的实验。合成样品的显微观察及荧光分析证实实验成功合成了烃类包裹体,实验证明油气对晶体生长和包裹体的形成有抑制作用,但不会终止其形成,纯油条件晶体仍能生长捕获包裹体,水并不是矿物生长捕获烃类包裹体的必须条件。结合矿物润湿性实验及前人研究将碳酸盐岩烃类包裹体捕获机制归纳为3种情况:油水共存(水润湿)、油水共存(油润湿)及纯油条件。水润湿条件下由水溶液提供矿物质来源,较易形成包裹体; 油润湿条件下由水溶液和油中的极性组分共同提供矿物质来源; 纯油条件下由原油中的极性组分和裂解产生的有机酸提供物源,形成烃类包裹体较少,晶体生长受到抑制。
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关键词纯油条件   人工合成烃类包裹体   方解石   润湿性   捕获机制     
Abstract: The experiment which temperature and pressure were near the condition ofnatural reservoir was carried out to synthesize hydrocarbon inclusions in carbonate within pure oil.Through the microscopic and fluorescent characters of hydrocarbon inclusions in carbonate,it demonstrated that carbonate remained growing and trapping inclusions when fluid medium was pure oil.The water was not necessity for trapping hydrocarbon inclusions in growing carbonate.Combined with conclusions of predecessors and wettability determination of carbonate,the trapping mechanism of hydrocarbon inclusions in carbonate was concluded as follows:coexistence of oil and water(water wetted),coexistence of oil and water(oil wetted)and pure oil.Under the conditions of water wetted,the mineral matter for carbonate growing was supplied by water solution.The speed of carbonate growing was relatively quick and quantity of synthetic hydrocarbon inclusions was big.Under the conditions of oil wetted,the mineral matter was supplied by both water solution and polar component of oil.Under condition of pure oil,the mineral matter was supplied by polar component of oil and organic acid generated when oil cracking.The mineral matter was limited,so carbonate growing was constrained and quantity of hydrocarbon inclusions was little.
Key wordsCondition of pure oil   Synthetic hydrocarbon inclusion   Carbonate   Wettability   Trapping mechanism   
收稿日期: 2011-04-18;
基金资助:

国家"863"计划项目(编号: 2007AA06Z210)、国家自然科学基金项目(编号: 40902040)、山东省自然科学基金项目(编号:Y2008E25)和油气资源与探测国家重点实验室开放课题(编号: 2009006)资助

通讯作者: 陈 勇, 男, 1976年2月生,博士,副教授,地球化学专业。E-mail: Yongchenzy@upc.edu.cn     E-mail: Yongchenzy@upc.edu.cn
作者简介: 葛云锦, 男, 1981年11月生,博士,地球化学专业。E-mail: upcgyj@163.com
引用本文:   
. 2012, 纯油条件下合成碳酸盐岩烃类包裹体及其捕获机制探讨. 地质科学, 47(1): 202-210.
. Synthesizing hydrocarbon inclusions in carbonate with pure oil and discussion of its trapping mechanism[J]. Chinese Journal of Geology, 2012, 47(1): 202-210.
 
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