| 摘要 |
<p>The present invention refers to the application of germinal zwitterionic liquids of the bis-N-alkyl polyether or bis-N-alkenyl polyether or bis-N-aryl polyether bis-beta iminoacid type or salts as rock wettability modifiers such as limestone, dolomite, grit, quartz or heterogeneous lithologies, in the presence of brine with a high content of divalent ions such as calcium, magnesium, barium and strontium, high temperature and pressure, in improved processes of oil recovery. The wettability modifiers have zwitterionic liquids of the bis-N-alkyl polyether or bis-N-alkenyl polyether or bis-N-aryl polyether bis-beta iminoacid type, using distilled water or brine as a dissolvent with a high content of divalent ions such as calcium and magnesium or organic solvents derived from alcohols comprising methanol, ethanol, isopropanol or mixtures thereof, 6 aromatics such as isomers of xylem, toluene or diesel, gasoline or mixtures thereof. The zwitterionic liquids of the bis-N-alkyl polyether or b is-N-alkenyl polyether or bis-N-aryl polyether bis-beta iminoacid or the salts thereof are obtained upon reacting an aminealkyl or alkenyl or aromatic and a reactant polyether derived from the ethylene oxide or propylene or copolymer thereof, which may contain a tosyl or mesyl group structure; the reacting product is subsequently reacted with unsaturated acids such as acrylic acid or methacrylic acid and subsequently may or may not be neutralised with alkaline metal bases such as sodium or potassium hydroxide, potassium or sodium carbonates or bicarbonates.</p> |
