CPC C09K 8/805 (2013.01) [E21B 43/14 (2013.01); E21B 43/26 (2013.01); E21B 43/267 (2013.01); E21B 47/11 (2020.05); E21B 49/08 (2013.01)] | 10 Claims |
1. A method comprising:
providing a proppant mixture in a well, the proppant mixture having functionalized polymer proppants having mechanical structures configured to provide a mechanical or physical function in a well to hold open fissures or pathways created in formations caused by well fracking to allow a release of fluids from the well, wherein the fluids are hydrocarbons or water, each functionalized polymer proppant including an inner bead having an outer surface with a respective coating made of a functionalized polymer;
responding, by first functionalized polymer proppants with first functionalized polymer coatings of the functionalized polymer proppants, to a hydrocarbon released from the well;
providing, by the first functionalized polymer proppants, a first functionalized polymer as a first chemical taggant or chemical taggant compound containing an indication about the hydrocarbon released from the well;
responding, by second functionalized polymer proppants with second functionalized polymer coatings of the functionalized polymer proppants, to at least a different fluid other than the hydrocarbon released from the well; and
providing, by the second functionalized polymer proppants, a second functionalized polymer as a second chemical taggant or chemical taggant compound containing a corresponding indication about the different fluid released from the well.
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