Patent ID: 9518211
Filing Date: 2016-12-13
CPC Classification: C09K,E21B

Claim Text:
1. A process for recovering oil from a subterranean oil-containing formation comprising at least the steps of: a) introducing solid particles and water into the subterranean oil-containing formation to obtain a solid particles-stabilized emulsion containing droplets, whereby water is the continuous phase and oil is the dispersed phase, and b) recovering said solid particles-stabilized emulsion from the subterranean oil-containing formation, wherein the solid particles comprise at least one layered double hydroxide of general formula (I) wherein M M A n is 1 or 2, x is the mole fraction having a value ranging from 0.1 to 0.5 and y is a value ranging from 0 to 5.0; wherein the solid-particles stabilized emulsion has a viscosity at 20° C. in the range of 5 to 30 mPa·s at a temperature of 20° C. under shear rate of 10/s.