HYDROXYSULTAINE- AND SULFOBETAINE-BASED GEMINAL ZWITTERIONIC LIQUIDS, METHOD FOR OBTAINING SAME, AND USE THEREOF AS WETTABILITY MODIFIERS HAVING CORROSION INHIBITING PROPERTIES.

摘要

The invention relates to the production and use of hydroxysultaine- and sulfobetaine-based geminal zwitterionic liquids as agents for modifying the wettability of rock, such as limestone, dolomite, sandstone, quartz or heterogeneous lithologies, in the presence of brines having a high concentration of divalent ions, such as calcium, magnesium, barium and strontium, and under high temperature and high pressure conditions, in enhanced oil recovery processes in order to increase oil production. The geminal zwitterionic liquids of the invention also act as inhibitors of the corrosion of ferrous metals used in ducts and equipment for operations involving the extraction, production, transport and storage of crude oil. These zwitterionic liquids are also advantageous in that, owing to their molecular structure, they can be dissolved in distilled water, brine, hydrocarbon and aromatic solvents, and alcohols.