新疆石油地质 ›› 1992, Vol. 13 ›› Issue (3): 257-263.

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蒸汽驱中地下蒸汽体积增长和累积注采比的计算

倪若石   

  1. 新疆石油管理局准噶尔盆地东部油田地质研究所 阜康 831511
  • 收稿日期:1981-10-28 出版日期:1992-09-01 发布日期:2020-07-21

CALCULATION OF STEAM GROWTH VOLUME IN—SITU AND CUMULATIVE INJECTION / PRODUCTION RATIO IN STEA MDRIVE PROCESS

Ni Ruoshi   

  1. Institute of Geology of Zhundong Oilfield, Xinjiang Petroleum Administration Bureau, Fukang 831511
  • Received:1981-10-28 Online:1992-09-01 Published:2020-07-21

摘要: 本文以P.J. Closmann的蒸汽区体积增长和CarslaW、Jachar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。

关键词: 稠油热采, 蒸汽驱, 蒸汽体积, 累积注采比

Abstract: On the basis of the mathematical models of steam growth volume in—situ presented by P. J. Closmann and temperature 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. lt suggests that existance of a gas state water may not be ignored during steamflooding, and a new equation for calculating cumulative injection/production ratio has been derived. Using actural data available, the values calculated is very close to field cases.

Key words: Thermal production for hcavy oil, Steamdrive, Steam volume, Cumulative injection/production ratio