Patent ID: 8438917
Filing Date: 2013-05-14
Classification: E21B,G01V,Y02C,Y02P

Abstract:
1. A method of long-term gravimetric monitoring of carbon dioxide stored in a geological formation, said method comprising: joining gravimetric sensors with sidewalls of boreholes in said geological formation at various vertical depths of said boreholes; using said gravimetric sensors, measuring a local gravitational field or a gravity gradient at a first time at each of said gravimetric sensors to develop baseline gravimetric data; reading said gravimetric sensors joined with said sidewalls to capture said baseline gravimetric data; transmitting said baseline gravimetric data to a data recording device exterior to said boreholes; using said gravimetric sensors, measuring a local gravitational field or a gravity gradient at each of said gravimetric sensors after said first time to develop post-baseline gravimetric data; reading said gravimetric sensors joined with said sidewalls to capture said post-baseline gravimetric data; transmitting said post-baseline gravimetric data to said data recording device exterior to said boreholes; and quantifying said carbon dioxide stored in said geological formation by comparing said baseline gravimetric data to said post-baseline gravimetric data to determine both vertical and horizontal positioning of said carbon dioxide stored in said geological formation.