›› 2009, Vol. 30 ›› Issue (12): 3602-3606.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Analysis of residual brine of salt rock gas storage during injecting gas to eject brine

CHEN Feng1, YANG Hai-jun2, YANG Chun-he1   

  1. 1. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China; 2. West-East Natural Gas Transmission Project Pipeline Branch Company , CN PC, Shanghai 200122, China
  • Received:2009-08-20 Online:2009-12-10 Published:2010-01-18

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Abstract:

In the natural gas storage engineering, the casing depth in the residual brine and the velocity of ejecting brine decide if the natural gas overflows from the salt cavern during injecting gas to eject brine. It is a difficult problem to adjust the velocity of ejecting brine under different casing depth in the residual brine and decrease the danger of the natural gas from the cavern. This technical problem is researched. The flow field of gas storage in the process of injecting gas to eject brine is modeled by the flowing theory of fluid. The maximal velocity of brine in the outside of casing is obtained. Based on the theory of the rising velocity of natural gas bubbles in the brine, the permitted velocities of ejecting brine under the different depths of residual brine are determined. The research result gives the technical support in the gas storage engineering of salt rock.

Key words: salt rock, gas storage, injecting gas to eject brine, flow field, permitted velocity

CLC Number: 

  • TD 871+.1
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