摘要
本文以P.J.Closmann的蒸汽区体积增长和Carslaw、Jaehar的温度分布的数学模型为基础,对油藏进行了一定的简化,提出了以恒定的注汽速度向油藏预热注汽时,地下蒸汽带体积和蒸汽所占体积的计算方法。强调在蒸汽驱过程不能忽略气态水的存在,导出了在新概念下累积注采比的计算公式。实例计算表明以本文方法计算的累积注采比更接近实际。
On the basis of the mathematical models of steam growth volume in-situ presented by P. J. Closmann and tem-perature distribution by Carslaw and Jaegar, this paper presents the methods for calculating the steam volume and the volume of pore volume in-situ at constant injection rate. It suggests that existance of a gas state water may not be ig-nored during steamflooding, and a new equation for calculating cumulative injection / production ratio has been de-rived. Using actural data available, the values calculated is very close to field cases.
出处
《新疆石油地质》
CAS
CSCD
北大核心
1992年第3期257-263,共7页
Xinjiang Petroleum Geology
关键词
蒸汽
蒸汽体积
粘性原油
注采比
Thermal production for heavy oil
Steamdrive
Steam volume
Cumulative injection/production ratio
