Patent Document ID: 20180066504
Application ID: 15668395
Patent Flag: 0

Claim One:
1. A method of producing hydrocarbons comprising: (a) obtaining one or more samples from a well in a region of interest; (b) analyzing the one or more samples to determine a baseline isotopic signature, wherein the baseline isotopic signature comprises one or more of multiply substituted isotopologue signatures, clumped isotope signatures, and position-specific isotope signatures; (c) performing a microbial stimulation operation on the region of interest; (d) obtaining one or more post-stimulation samples from the well; (e) analyzing the post-stimulation sample to determine an induced isotopic signature, wherein the induced isotopic signature comprises multiply substituted isotopologue signatures, clumped isotope signatures, and/or position-specific isotope signatures; (f) comparing the baseline isotopic signature and the induced isotopic signature; (g) determining whether the type of hydrocarbons being produced by the well has changed.