Patent ID: 9303497
Filing Date: 2016-04-05
CPC Classification: C09K,E21B

Claim Text:
1. A method for determining a presence of a tracer from a subterranean location comprising: introducing at least one non-halogenated tracer into a subterranean location, where the at least one non-halogenated tracer is a molecule having from 10 to 30 carbon atoms selected from the group consisting of aliphatic, aromatic, saturated, unsaturated, and/or combinations thereof, of alcohols, ketones, organic acids, organic acid salts, sulfonated alcohols, sulfonated ketones, sulfonated organic acids, sulfonated organic acid salts, and combinations thereof, where the non-halogenated tracer is introduced in a form selected from the group consisting of: recovering a fluid from the subterranean location where the fluid comprises the at least one non-halogenated tracer; and reacting the at least one non-halogenated tracer with a reagent to give at least one derivatized tracer, where the reagent is a reagent that can attach at least one halogen atom to the non-halogenated tracer.