摘要:
A micellar slug for use in the recovery of oil, consisting essentially of a surfactant and an aqueous medium, which may contain an inorganic salt. The surfactant contains:(a) at least one alkoxy sulfonate having the general formula (I): ##STR1## wherein R.sup.1 represents an alkyl group having 1 to 26 carbon atoms, R.sup.2 represents an alkyl or alkenyl group having 1 to 24 carbon atoms, R.sup.3 represents hydrogen or an alkyl group having 1 to 24 carbon atoms, n is a number of 0 to 5, and X represents an alkali metal, an alkaline earth metal, ammonium, or an organic amine, and(b) at least one other surfactant.The micellar slug obtains large intake amounts of oil and brine in the resultant micro-emulsions and a good dilution stability of the micro-emulsion, and is capable of recovering oil from subterranean reservoirs having a high salt content at a high oil recovery efficiency.
摘要:
A micellar slug for use in the recovery of oil, consisting essentially of a surfactant and an aqueous medium, which may contain an inorganic salt. The surfactant contains, as essential constituents,(a) at least one internal olefin sulfonate having 10 to 26 carbon atoms; and(b) 0.1 to 60 parts by weight, based on 100 parts by weight of the internal olefin sulfonate, of at least one ether sulfonate having the general formula:R.sup.1 --O--(R.sup.2 O).sub.m --(R.sup.3 O).sub.n --R.sup.4 --SO.sub.3 X (I) wherein R.sup.1 represents an alkyl or alkenyl phenyl group having 12 to 26 carbon atoms or an alkyl or alkenyl group having 10 to 24 carbon atoms, R.sup.2 represents C.sub.2 H.sub.4 or C.sub.3 H.sub.6, R.sup.3 represents C.sub.2 H.sub.4 or C.sub.3 H.sub.6, R.sup.4 represents C.sub.2 H.sub.4, C.sub.3 H.sub.6, or CH.sub.2 CH(OH)CH.sub.2, n.gtoreq.0, m.gtoreq.0, and n+m=0 to 15, and X represents an alkali metal or an alkaline earth metal.
摘要:
A micellar slug for use in the recovery of oil, the slug containing a hydrocarbon, an aqueous medium, a surfactant, and a cosurfactant. The surfactant contains as essential components (a) at least one alpha-olefin sulfonate having 10 to 30 carbon atoms and (b) at least one ethoxylate selected from the group consisting of polyoxyethylene alkyl ethers and polyoxyethylene alkylphenyl ethers in a weight ratio of component (a) to component (b) of 8/2 to 3/7. The micro-emulsion can be formed from this micellar slug in a wide composition range. Furthermore, this micellar slug has an excellent salinity tolerance and hard-water resistance.
摘要:
A stabilizer for mixed fuels containing a reaction product obtained by reacting (1) a polyol having at least 3 hydroxyl groups in the molecule and a molecular weight of 400-10,000 with (2) an epihalohydrin, as the principal component.
摘要:
Disubstituted aliphatic carboxylamidoamines of the general formula: ##STR1## wherein R stands for an aliphatic hydrocarbyl group with 7-17 carbon atoms and M for a hydrogen atom or an alkali metal atom. Detergents and toiletry compositions incorporated with the disubstituted aliphatic carboxylamidoamines are extremely low in irritating property to skin, eyes and mucous membranes.