Lithologic Reservoirs ›› 2014, Vol. 26 ›› Issue (2): 125-127.doi: 10.3969/j.issn.1673-8926.2014.02.020

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Experiment research on shrink-proof expansion to huff and puff for Kexia heavy oil reservoir in Liudong area

XU Sha1， YIN Xiangxiang1， LIU Linquan2， ZHANG Xin2， ZENG Xianyou1   

  1. 1. Key Laboratory of Drillng and Production Engineering for Oil and Gas of Hubei Province，Yangtze University， Wuhan 430100， China； 2. Shixi Working District， PetroChina Xinjiang Oilfield Company， Karamay 834000， Xinjiang， China
  • Online:2014-04-06 Published:2014-04-06

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Abstract:

Based on geologic characteristics of Kexia heavy oil reservoir, research on shrink-proof expansion treatment was carried out before huff and puff test. Combined with the results of reservoir sensitivity evaluation, shrink-proof expansion optimization and static performance evaluation, through the research of temperature resistance performance and core flow experiments, this paper determined the anti-swelling cycles, treatment radius and injection program on site. The results show that the favorable anti-swelling agents are 1% HCS-G and 1% EXHCS, they are resistant to high temperature of 230 ℃, and can meet the requirements of steam stimulation; The shrink-proof treatment radius is 3.5 m, the anti-swelling cycle is about 2 years, and shrinkage and expansion cycle is about 1 year. And this paper also designed the injection program on site.

Key words: tight oil, reservoir characteristics, “sweet spots&rdquo, prediction, Permian, Fengcheng Formation, Junggar Basin

CLC Number: 

  • TE345