西南石油大学学报(自然科学版) ›› 2006, Vol. 28 ›› Issue (2): 52-55.DOI: 10.3863/j.issn.1000-2634.2006.02.014

• 石油与天然气工程 • Previous Articles     Next Articles

WELL TEST METHOD IN HEAVY OIL THERMAL RE-COVERY WITH CONSIDERATION OF GRAVITY OVERRIDE

HUO jin 1,2 JIA Yong-1u1 YU Jia 1 et al.

  

  1. (Heavy Oil Production Co, PetroChina Xinjiang Oil Field Branch Company , Kalamay 834000 , China )
  • Received:2005-02-21 Revised:1900-01-01 Online:2006-04-20 Published:2006-04-20
  • Contact: HUO jin

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Abstract: Aimed at Gravity Override in a steam-injection processes,a well test analysis model of wedge-shaped compound reservoir is set up to simulate to slant steam front. 1'he mathematical mod-e1 considering heat loss is given and solved by Iaplace transfor-mation, then stehfest algorithm is used to obtain dismentionless wellbore pressure. The influence of the parameter on the dis-
mentionless wellbore pressure is discussed, such as slant angle,heat loss, and mobility ratio.

Key words: Gravity Override, compound reservoir, wellt-est analysis, Laplace transformation, stehfest algorithm

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