Subsurface Migration of Gas and Fluids
|NETL efforts focus on better knowledge of how fluids and gas can migrate in complex geologic systems due to energy resource development.
Leads to improved ability to predict fluid and gas migration into shallow systems:
Solution: NETL is developing rapid sample processing and analytical chemistry tools for natural geochemical tracers that can be used to identify the sources of fluids and gases in complex geologic systems undergoing energy development
NETL is performing field magnetic surveys coupled with ground-truthing, and data mining of existing wellbore locations, to develop tools for evaluating the densities and locations of potential leakage pathways
NETL isperforming laboratory work to investigate the effect of gas on the effectiveness of well cements, and is mining existing data
resources on causes for poor well cementing in gas-rich systems
NETL is developing tools to evaluate the distribution of methane in the Appalachian Basin, and is developing means to evaluate how different shale gas extraction processes affect the natural distribution of methane due to changes in hydrology.
|Using Natural Geochemical Tracers to Track Fluid Migration
Chapman, E.; Capo, R.; Stewart, B.; Kirby, C.; Hammack, R.; Schroeder, K.; Edenborn, H. M. "Geochemical and strontium isotope characterization of produced waters from Marcellus Shale natural gas extraction." Environ. Sci. Technol. 46: 3545-3553