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- W2380450095 abstract "The titled polymer for EOR,marked by COMB-B1,is developed for use in the 2nd category oil reservoirs of K in range 0.1—0.3 μm~2 in Daqing,to which polymers of intermediate molecular mass,1.3×10~7—1.8×10~7,are appropriate.Starting from the molecular design principles of salts resistant comb-like polymer KYPAM,a comonomer with 2 side groups is used instead of one with single side group and the 2 side chain groups become braided in the comb-like acrylamide copolymer and lead to increasing the rigidity of main copolymer chain.With lower apparent molecular mass,M_a,such polymer has higher tolerancy to salts.This polymer is not hydrophobically associating in aqueous solution.For COMB-B1(M_a=1.793×10~7,HD=23.8%),KYPAM(1.992×10~7,29.0%),and Mitsubishi's HPAM MO-4000(2.514×10~7,26.4%), the dissolution rate in water is similar;the viscosity at 45℃ and 7.34 s~(-1) of 1 g/L solution in Daqing fresh water(FW,TSD=1 g/L and Ca~(2+)+Mg~(2+)15 mg/L) is of 88.7,66.5—76.6,and 64.4 mPa·s and in Daqing produced water(PW,4 g/L and 60 mg/L)is of 45.6,42.8—44.4,and 32.3 mPa·s,respectively. The viscosity of 0.2—2 g/L solutions of COMB-B1 is always higher in FW and similar in PW in comparison with that of KYPAM and is much higher in both cases than that of MO-4000.The K value in power law equation,consistancy coefficient,is larger notably in FW and a little in PW for COMB-B1 than that for KYPAM and is very little for MO-4000 in both cases;the n value,expressing fluid pseudoplasticity,is similar for COMB-B1 and KYPAM and is larger for MO-4000." @default.
- W2380450095 created "2016-06-24" @default.
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- W2380450095 date "2006-01-01" @default.
- W2380450095 modified "2023-09-25" @default.
- W2380450095 title "Laboratory Study on Salts Tolerant Comb-Shape Polymer with Braided Side Chain for EOR" @default.
- W2380450095 hasPublicationYear "2006" @default.
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