Patent ID: 9715036
Date: 2017-07-25
CPC Classifications: C25B,G01N,G01V

Claim:
1. A system for determining at least one property of at least one fluid in at least one subterranean formation, the system comprising: a fluid delivery system configured and positioned to deliver a fluid into at least one of at least one subterranean formation and a wellbore extending through the at least one subterranean formation; a radiation source within the wellbore, the radiation source configured to generate excitation radiation; carbon quantum dots comprising a carbon core, the carbon core exhibiting at least one fluorescence property disposed in the fluid, wherein the carbon quantum dots comprise at least: a detector within the wellbore, the detector configured to measure the at least one fluorescence property of the carbon core of the first group of carbon quantum dots and the second group of carbon quantum dots.