In response to the high temperature(110-130 ℃)reservoir of flue gas,a temperature-resistant polymer gel was performed by low-cost HPAM crosslinked by amino resin,which is applicable for plugging flue gas channeling due to its suitable gelation time,gel strength and thermal stability.The experimental results show that the polymer gel was damaged by dissolved oxygen within 30 days of heat treatment in the presence of flue gas under the condition of 3 MPa and 130 ℃,and the gel strength initially increased,then maintained stable,and was damaged at last.The complex rheological method showed that the gel has a characteristic of shear intolerance under large strain,but the gel elasticity is increased after heat treatment for 22 days.The large amplitude oscillatory shear tests show that the strength of the gel is increased before being damaged due to its shrinkage and dehydration,which is conducive to efficient plugging during the effective period of gel.The research results indicate that the polymer gel can be used as a slug in the near-wellbore area where the flue gas exists and the temperature is less than 130 ℃.
carbon capture,untilization and storage(CCUS)fluegaspolymer gelviscoelasticitygel stability
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