Patent ID: 9133709
Filing Date: 2015-09-15
Classification: C09K,E21B,G01V,Y02A

Abstract:
1. A method of determining a presence, measuring a distribution and saturation or both of an oil or a hydrocarbon or CO 2 in a reservoir rock or subsurface formation comprising: injecting a fluid comprising one or more paramagnetic nanoparticles coated with a polymer or a surfactant or any combinations thereof into the reservoir rock or subsurface formation to adsorb the one or more coated paramagnetic nanoparticles at an oil/water, gas/water or CO applying an external magnetic field to oscillate the one or more coated paramagnetic nanoparticles adsorbed at the oil/water, gas/water or CO measuring one or more acoustic response parameters generated by the oscillation of the one or more coated paramagnetic nanoparticles adsorbed at the oil/water, gas/water or CO determining the presence and an oil, a gas or a CO