天然气地球科学 ›› 2011, Vol. 22 ›› Issue (5): 784–788.doi: 10.11764/j.issn.1672-1926.2011.05.784

• 天然气地质学 • 上一篇    下一篇

油气二次运移过程差异物理模拟实验油气二次运移过程差异物理模拟实验油气二次运移过程差异物理模拟实验油气二次运移过程差异物理模拟实验

姜林,洪峰,柳少波,马行陟,郝加庆,陈玉新   

  1. 1.中国石油勘探开发研究院,北京 100083;
    2.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;
    3.提高石油采收率国家重点实验室,北京100083;
    4.中国石油集团渤海钻探工程有限公司,天津 300280
  • 收稿日期:2011-04-22 修回日期:2011-08-19 出版日期:2011-10-10 发布日期:2011-10-10
  • 通讯作者: 姜林jianglin01@petrochina.com.cn. E-mail:jianglin01@petrochina.com.cn.
  • 作者简介:姜林(1976-),男,山东牟平人,工程师,博士,主要从事油气成藏综合研究.
  • 基金资助:

    国家重大专项“中西部前陆盆地大型油气田形成、分布与区带评价”(编号:2011ZX05003-001)资助.

Physical Simulation of Oil and Natural Gas Secondary Migration

 JIANG  Lin, HONG  Feng, LIU  Shao-Bo, MA  Hang-De, HAO  Jia-Qiang, CHEN  Yu-Xin   

  1. 1.Research Institute of Petroleum Exploration and Development,PetroChina,Beijing 100083,China;
    2.Key Laboratory of Basin Structure and Petroleum Accumulation,PetroChina,Beijing 100083,China;
    3.State Key Laboratory of EOR,PetroChina,Beijing 100083,China;
    4.CNPC Bohai Drilling Engineering Company Limited,Tianjin 300280,China
  • Received:2011-04-22 Revised:2011-08-19 Online:2011-10-10 Published:2011-10-10

摘要:

采用饱和水、玻璃珠充填的直玻璃管为模型,通过底部注入、顶部采出的方式分别进行油气二次运移物理模拟实验,模拟石油和天然气的二次运移过程。结果表明,原油的二次运移分为活塞式和优势式2个运移阶段;天然气的二次运移是一种断续式运移,也主要包括活塞式和优势式2种基本运移方式。结合油、气、水物理化学性质分析,探讨了油气二次运移过程的差异,认为石油和天然气自身属性的差异导致其二次运移过程不同。原油二次运移过程中不仅会驱替岩石孔隙中的自由水,而且会置换岩石表面的吸附水,可以与孔隙岩石形成稳定的作用关系,因此原油二次运移过[JP2]程的阶段性比较明显;天然气与地层水密度差异较大,导致二次运移的动力——浮力较强,而且天然气不能改变孔隙岩石的润湿性,因此运移比较活跃,形成与原油二次运移明显不同的断续式运移。

关键词: 二次运移, 物理模拟, 活塞式, 优势式, 断续式

Abstract:

In this paper,we simulate oil and natural gas secondary migration process by injecting oil and natural gas into straight glass tube model saturated water and filling glass beads from bottom in top.The results show that there are two migration stages of piston\|type and advantage-type during oil secondary migration process and natural gas secondary migration has the piston and advantages basic migration styles.We discuss the differences of oil and natural gas secondary migration process based on physical and chemical properties of oil,gas and water.The property of oil and gas itself cause the differences of secondary migration process.In the secondary migration process,oil can replace free water in rock pores and adsorbed water on rock surface,forming the stability with pore rock.So,the oil secondary migration phase is obvious.Natural gas secondary migration is much active owing to strong buoyancy difference between natural gas and formation water density.Thus,the natural gas secondary migration is an intermittent migration which is markedly different from oil secondary migration.

Key words: Secondary migration, Physical simulation, Piston-type, Advantage-type, Intermittent-type.

中图分类号: 

  • TE122.1

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