轻质组分挥发对蒸汽热采稠油影响的数值模拟

doi:10.7623/syxb201206017

石油学报 ›› 2012, Vol. 33 ›› Issue (6): 1043-1048.DOI: 10.7623/syxb201206017

轻质组分挥发对蒸汽热采稠油影响的数值模拟

唐明云 1,2　施安峰 1 王晓宏 1 贾江涛 1

1.中国科学技术大学热科学和能源工程系安徽合肥 230026; 2．安徽理工大学能源与安全学院安徽淮南 232001

收稿日期:2012-05-27 修回日期:2012-08-08 出版日期:2012-11-25 发布日期:2012-12-07
通讯作者: 王晓宏，男，1966年9月生，1993年获中国科学技术大学博士学位，现为中国科学技术大学热科学和能源工程系教授、博士生导师，主要从事多孔介质中多相流动数值模拟的研究工作。
作者简介:唐明云，男，1978年2月生，2005年毕业于安徽理工大学安全工程专业，现为中国科学技术大学博士研究生，主要从事蒸汽热采稠油数值模拟方面的研究。
基金资助:
国家自然科学基金项目(No.11172295)、中国科学院知识创新工程重大项目(KJCX1-YW-21)和国家高技术研究发展计划（863）项目(2006AA06Z228)资助。

Numerical simulation of the effect of light component volatility on heavy-oil production by steam injection

TANG Mingyun 1,2　 SHI Anfeng 1　 WANG Xiaohong 1 　JIA Jiangtao 1

Received:2012-05-27 Revised:2012-08-08 Online:2012-11-25 Published:2012-12-07

摘要/Abstract

摘要：

针对蒸汽驱和蒸汽辅助重力泄油（SAGD），利用油藏数值模拟研究了轻质组分挥发对注蒸汽热采稠油效率的影响及其作用机制。计算结果表明，在蒸汽注采过程中，蒸汽腔内挥发出来的轻质组分向锋面聚集，从而提高了锋面附近的油相流动性，重力作用使得轻质组分更易聚集在蒸汽腔上半部的锋面附近;轻质组分挥发作用对蒸汽驱影响较大，而对SAGD影响较小;同时对比分析了不同化学成分及其含量的轻质组分挥发对采油效率的影响程度。结果表明,当对轻质组分分子量较大且含量较低的稠油油藏进行数值模拟时，可以简化为三相二组分模型而不考虑轻质组分的挥发。

关键词: 蒸汽热采, 稠油, 轻质组分挥发, 数值模拟, 采油效率

Abstract:

Effects of light components on the heavy-oil thermal recovery during processes of steam drive and steam assisted gravity drainage (SAGD) were studied by numerical simulation. The result shows that light components inside a steam chamber tend to move towards thermal fronts and aggregate there at the upper part of the steam chamber because of gravity, which can increase the local oil mobility. Influences of the light component volatility on the oil production depend upon types of the thermal recovery. For example, this influence in the steam drive process is more obvious than that in the SAGD process. Based upon the numerical simulation, volatility effects of different chemical compositions and contents of light components on the oil production efficiency were also analyzed. The result indicates that the volatility effect of light components can be ignored in the thermal recovery simulation of heavy-oil reservoirs when light components have relatively large molecular weight and a small amount.

Key words: oil production by steam injection, heavy oil, volatility of light component, numerical simulation, oil production efficiency

唐明云施安峰王晓宏贾江涛. 轻质组分挥发对蒸汽热采稠油影响的数值模拟[J]. 石油学报, 2012, 33(6): 1043-1048.

TANG Mingyun SHI Anfeng WANG Xiaohong JIA Jiangtao . Numerical simulation of the effect of light component volatility on heavy-oil production by steam injection[J]. Editorial office of ACTA PETROLEI SINICA, 2012, 33(6): 1043-1048.

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轻质组分挥发对蒸汽热采稠油影响的数值模拟

Numerical simulation of the effect of light component volatility on heavy-oil production by steam injection

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