Detecting mineralization and monitoring greenhouse gas plume location in subterranean formations
The disclosed methods and apparatus generally relate to disposal of detection of mineralization and monitoring of greenhouse gas plume locations in subterranean aquifers.
1 . A method for measuring the location of a subterranean gas plume, the method comprising:
injecting greenhouse gas bearing fluid into a subterranean formation, the injected fluid creating a gas plume in the formation, the plume moving locations over time, the plume causing earth surface uplift;
performing a series of measurements at spaced intervals of time to determine the changes in earth surface altitude or relative altitude at selected locations, the measurements providing measured data;
using the measured data to determine a first plume location at a selected first time;
using the measured data to determine a second plume location at a selected second time;
performing a series of measurements at spaced intervals of time to determine the changes in the subterranean pressure or permeability, the measurements yielding pressure or permeability data; and
using the measured pressure or permeability data to determine a mineralization of the subterranean plume at a selected first time; and using the measured pressure or permeability data to determine the mineralization of the subterranean plume at a selected second time.
2 . The method of claim 1 , further comprising taking direct leveling measurements to determine earth surface altitude or relative altitude.
3 . The method of claim 1 , further comprising taking radar interferometry, synthetic aperture radar, or interferometric synthetic aperture radar measurements to determine altitude or relative altitude.
4 . The method of claim 1 , further comprising transmitting and receiving electronic waves between surface mounted units and a satellite unit to indicate surface altitude or relative altitude.
5 . The method of claim 1 , further comprising measuring the tilt of the earth surface using a plurality of tilt meters positioned at spaced locations.
6 . A method for measuring the location of a subterranean gas plume, the method comprising:
injecting greenhouse gas bearing fluid into a subterranean formation, the injected fluid creating a gas plume in the formation, the plume moving locations over time, the plume causing earth surface uplift;
performing a series of measurements at spaced intervals of time to determine the changes in earth surface altitude or relative altitude at selected locations, the measurements providing measured data;
inputting the measured data into a computer having a non-transitory memory, a processor, and a software program executable by the computer, simulating, using the program, a subterranean reservoir and a simulated earth surface, including altitude or relative altitude at a plurality of locations on the simulated earth surface, based on the measured data taken at a first time;
simulating, using the program, a subterranean reservoir and a simulated earth surface, including altitude or relative altitude at a plurality of locations on the simulated earth surface, based on the measured data taken at a second time;
simulating, using the program, changes to the subterranean reservoir and the simulated earth surface based on the measured data;
predicting, using the computer, the altitude or relative altitude at a plurality of locations on the simulated earth surface based on the measured data; and
simulating mineralization of the plume, using the computer, based on the measured data.