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Effects of water on fluid physical properties of Puguang sour gas reservoir

Guo Xiao,Wang Peng   

  1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation/Southwest Petroleum University,Chengdu 610000,China
  • Received:2017-02-27 Revised:2017-06-13 Online:2017-07-10 Published:2017-07-10

Abstract:

In order to determine whether acidic gas reservoir water cut is influential to the fluid physical properties,some PVT experiments of anhydrous acid gas and aqueous acid gas were developed based on gas sample of Puguang sour gas reservoir.The experimental results show that water has no effect on gas deviation factor of acidic gas and a larger influence on gas viscosity,which is mainly manifested at low pressure (<40MPa).Temperature has less effect on water content,viscosity,deviation factor of acidic gas.At constant pressure,the higher temperature is,the greater water content in acidic gases is and the smaller gas viscosity is.Under constant temperature and low pressure,pressure increases,water content of acidic gas declines rapidly,and decreasing viscosity degree of aqueous acidic gas is bigger than that of anhydrous acidic gas.At high pressure (>40MPa),pressure increases,water has less influence on viscosity of acidic gas.

Key words: Sour gas reservoirs, PVT experiment, Water content, Viscosity, Deviation factor

CLC Number: 

  • TE122.2+3

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