| CPC C09K 8/805 (2013.01) [C09K 8/524 (2013.01); C09K 8/528 (2013.01); C09K 8/602 (2013.01); C09K 8/605 (2013.01); C09K 8/64 (2013.01); C09K 8/665 (2013.01); C09K 8/70 (2013.01); C09K 8/92 (2013.01); E21B 43/088 (2013.01); E21B 43/267 (2013.01); E21B 47/11 (2020.05); C09K 2208/10 (2013.01); C09K 2208/12 (2013.01); C09K 2208/20 (2013.01); C09K 2208/24 (2013.01); C09K 2208/26 (2013.01); C09K 2208/32 (2013.01)] | 12 Claims | 

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               1. A method of diagnostic evaluation of a hydraulic fracturing stimulation of a subterranean formation, comprising: 
            injecting a hydraulic fluid into at least one stage of the subterranean formation at a rate and pressure sufficient to open a fracture therein, the subterranean formation comprising one or more formation fluids and the hydraulic fluid comprising a proppant composition, the proppant composition comprising porous particulates infused with a biological marker, wherein the biological marker separates from the proppant composition and returns to the surface with the formation fluids; 
                recovering the biological marker; and 
                estimating relative hydrocarbon or water volume contribution of a stage or stages of the subterranean formation based on relative amounts of biological markers recovered from the stage or stages of the subterranean formation. 
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