new multi-purpose oil development and use of surfactant

Its chemical composition is: RX (CH2-CR1Y) a-(CH2-CR2Z) bH, wherein R = 6 ~ 24 carbon atoms, an alkyl or alkaryl group R1 = H? CH3 or C2H5; R2 = H? CH3? C2H5 or CH2COOH; X = S a sulfonyl group or a sulfonyl group; Y = CN? CONH2? CH2CONH2? CONHCH3? CONHC2H5? COOCH3? COOC2H5? COOC2H4OH? COOC3H6OH or CONHCH2OH; Z = CH2COOH? COOH? OCH3? OC3H5 or CH2OH, or a salt thereof; a + b = 2 ~ 50, and a / (a ??+ b) = 0 ~ 0.8. The surfactant has a high salt and divalent ions capability, high solubilization capacity and lower the interfacial tension between oil and brine. Pellet mill $! J & reported a new a branched ether surfactant of the formula: wherein R3 = 8 ~ 12-alkyl; R4 = 2 ~ 6-alkyl; A = 2 ~ 3 carbon epoxy alkyl; P mean = 2 ~ 6; Y = hydroxyl or without hydroxyl containing 1 to 3 carbon alkylene group; m1 and m2 = 0 or 1, but oil expeller 0; r = 0 or 1. The surfactant has a good solubilization capacity, resistance to high concentrations in seawater divalent ions ability, and appear in the phase microemulsion salinity range, suitable for sea water injection surfactants for enhanced oil recovery in oil wells. Andrew degree application by the two-step method C22, and C26 paraffinic and naphthenic petroleum distillate production rate for EOR salt surfactant. Also recently reported non-petroleum sulfonate efficient? Inexpensive surfactants tall oil pitch? Rhamnose ester? Lignin and so on.