Effect of Biogeomechanical Altered Properties on Geologic Carbon Storage in Unconventional Reservoirs
Abstract
Geologic Sequestration (GS) is part of a process known as carbon capture, utilization, and storage (CCUS); used across the world to mollify extreme weather events (global warming) as a result of CO2 emissions and improve energy production. In this study, we experimentally and analytically investigate the impact of microbially-altered mechanical properties on geologic carbon storage in unconventional reservoirs, using a cultured bacteria solution with a novel growth nutrient, and shale rock specimens from Eagle Ford, Marcellus, and Niobrara formations. Firstly, we obtained the physical, mineralogical, and mechanical properties of untreated shale rock specimens. Secondly, we treated and cultivated the core samples with the cultured bacteria solution at specific temperature, time, and growth conditions. Further, we obtained the altered mineralogical and mechanical properties of the shale rock specimens impacted by the microbes. Lastly, we show the impact of microbially-modified mechanical properties on underground storage integrity of CO2 in unconventional shale reservoirs. Our results suggest that in shale reservoirs, biogeomechanical modifications can enhance the long-term integrity of geologic sequestration of atmospheric CO2, by mitigating any deep subsurface potential leakage to the atmosphere.
- Publication:
-
AGU Fall Meeting Abstracts
- Pub Date:
- December 2020
- Bibcode:
- 2020AGUFMB095.0004K
- Keywords:
-
- 0414 Biogeochemical cycles;
- processes;
- and modeling;
- BIOGEOSCIENCES;
- 0419 Biomineralization;
- BIOGEOSCIENCES;
- 0428 Carbon cycling;
- BIOGEOSCIENCES;
- 0448 Geomicrobiology;
- BIOGEOSCIENCES;
- 0463 Microbe/mineral interactions;
- BIOGEOSCIENCES;
- 0486 Soils/pedology;
- BIOGEOSCIENCES