Urea as a cosurfactant in enhanced oil recovery processes
Use of alkali metal silicate foam with a chemical blowing agent
Use of materials as waterflood additives
Use of polyampholytes to enhance oil and/or gas recovery
Use of surfactants to improve oil recovery during steamflooding
Use of taurine additives in enhanced oil recovery with anionic s
Use of unmodified kraft lignin, an amine and a water-soluble sul
Using geothermal energy to heat a portion of a formation for...