Effect of Polymer and Polymer Gel on Disproportionate Permeability Reduction to Gas and Water for Tight Gas Baojun Bai, Petroleum Engineering, Missouri University of Science and Technology, Rolla, MO 65409,
[email protected] 1. Experimental Setup of single molecule imaging system
2. Polymer could significantly reduce the water permeability without changing the gas flow in the micro channels 3.4
70
-12
2
m )
3.2
Apparent gas permeability, Kg (10
Permeability Reduction
3.0 2.8 2.6 2.4 2.2 2.0 1.8 1.6 1.4 0
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60
()
K g (before) 24.7 10 12 m 2 ()
K g (after ) 23.9 10 12 m 2
50
40
30 Before Polymer After Polymer 20 0.00
Water flooding injection velocity (cm/hr)
3. Microscope Images of Fused-Silica Square Capillary Before and After Polymer Injection
0.01
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1/Pm (psi-1)
0.05
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