Salt-tolerance temperature-resistance foaming agent
2014
The invention provides a salt-tolerance temperature-resistance foaming agent. The salt-tolerance and temperature-resistance foaming agent is prepared from long-chain alpha-olefin sulfonates, a betaine type surfactant and a hydrophilic coupling agent according to the molar ratio of 1: 1: (0.01-0.24), wherein the long-chain alpha-olefin sulfonates is C14-16 alpha-olefin sulfonates, C14-18 alpha-olefin sulfonates, C16-18 alpha-olefin sulfonates or C20-24 alpha-olefin sulfonates, the betaine type surfactant is coconut fatty amido propyl betaine, hexadecyl betaine or a mixture of the coconut fatty amido propyl betaine and the hexadecyl betaine, and the hydrophilic coupling agent is hexadecyl glucoside, octadecyl glucoside or a mixture of the hexadecyl glucoside and the octadecyl glucoside. The foaming agent is suitable for a foam flooding foaming agent, a foam plugging agent, a foam drilling fluid foaming agent or a foam scrubbing agent used for drainage gas recovery under the oil reservoir conditions that the salinity is lower than 25*10 mg/L, and the temperature reaches up to 120 DEG C.
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