TREATMENT OF SUBSURAFACE GAS-BEARING FORMATIONS TO REDUCE WATER PRODUCTION THEREFROM

摘要

TREATMENT OF SUBSURFACE GAS-BEARING FORMATIONS TO REDUCE WATER PRODUCTION THEREFROM Excessive water production from a producing gas well is substantially reduced by the injection of a hydrocarbon-diluted waterin-oil emulsion comprising a viscosifying polymer such as polyacrylamide, the injected emulsified polymer swelling on contact with connate water in the subsurface gas producing formation to restrict transfer of water therethrough toward the producing gas well.