Patent ID: 11873445
Assignee: UNIVERSITY OF WYOMING
Field: Civil engineering (Other fields)
Classification: CPC C  E  G | IPC C  E  G

Claim 16:
17. The method of claim 1, further comprising:
delivering a second feedstock downhole to the coal reservoir via the injection well;
generating a second biogas through microbial action, wherein the second biogas comprises a second isotopically differentiable methane and a second isotopically differentiable CO2, within the coal reservoir that is isotopically differentiable from the background gas and the biogas;
harvesting the second biogas at the injection well and one or more offset wells of the coal reservoir;
analyzing the second biogas from the coal reservoir at the injection well and at one or more offset wells within the same coal reservoir;
detecting the second biogas at the offset wells; and
mapping migration of the second biogas from the injection well through the coal reservoir of the offset wells using the second biogas as a second isotopic tracer.