西南石油大学学报(自然科学版)

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Horizontal Well Staged Fracturing Technology of Tight Sandstone
Reservoirs with Super Depth in Tazhong Area

Mi Qiangbo1,2*, Yi Xiangyi2, Luo Pandeng1, Ren Lan3   

  1. 1. Research Institute of Engineering Technology,Northwest Oilfield Branch,SINOPEC,Urumqi,Xinjiang 830011,China
    2. College of Energy Resources,Chengdu University of Technology,Chengdu,Sichuan 610059,China
    3. Key Laboratory of Gas Reservoir Geology And Exploitation Engineering,Southwest University of Petroleum,Chengdu,Sichuan 610500,China
  • Online:2015-04-01 Published:2015-04-01

Abstract:

Horizontal Staged fracturing technology has been widely used in oil and gas fields in Daqing,Liaohe,and Huabei
and Xi′an in China,but it is mainly used in reservoirs with vertical depth of less than 4 000 m. Conventional vertical well
fracturing stimulation has limitations in production increase,and cannot sustain the industrial oil flow as sandstone reservoirs
in Shun – 9 well area,which has super depth reservoirs and their poor physical properties. So there has great needs to increase
the drainage area and improve well productivity through horizontal staged fracturing technology. But the characteristics of super
buried depth,high closure pressure and fracture pressure of Shun – 9 well bring a series of difficulties for the staged fracturing
technology of transformation tool selection,liquid systems and technology method. Based on the analysis of foreign fracturing
technology deep horizontal well of Shun – 9 well reservoir characteristics and an domestic technical capabilities horizontal well
transformation,the horizontal well transformation process and tools,liquid systems and fracture parameters are optimized for
developing the horizontal well fracturing technology for Shun – 9 well area.

Key words: shun &ndash, 9;tight sandstone;horizontal well;staged fracturing;closure pressure