Effect of Cationic Polyacrylamide on Gas–Water Seepage in Quartz Sands before and after Methane Hydrate Formation
Yun Feng,
Xiaosen Li,
Zhaoyang Chen
et al.
Abstract:Excessive water production impacted marine natural gas hydrate production. Cationic polyacrylamide (CPAM), one kind of chemical reagent, was used for the first time to selectively reduce water production while having less impact on gas production. After quartz sands with an absolute permeability of 100−1000 mD were treated with CPAM, the water phase permeability was reduced to 1/15, while the gas phase permeability almost had no change. Furthermore, CPAM was effective in controlling water flow in quartz sands … Show more
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