Geologic carbon sequestration injection wells in overpressured storage reservoirs: estimating area of review
Abstract
Abstract The Area of Review (AoR) under the US Environmental Protection Agency's (EPA) Class VI CO 2 injection permit is defined as the region surrounding the geologic carbon sequestration (GCS) project where underground sources of drinking water (USDWs) may be endangered. Estimation of the AoR is based on the calculated reservoir pressurization due to CO 2 injection and the associated potential to lift saline water into potable groundwater aquifers through open flow paths (e.g. wells) assuming the system is hydrostatic. In cases where the storage reservoirs are not initially hydrostatic, and in particular where they are overpressured, AoR estimation methods need to be altered. In this paper, we present and apply an approach to evaluating potential endangerment of USDW based on comparing brine leakage through a hypothetical open flow path in a no‐injection scenario and brine leakage in a CO 2 ‐injection scenario. We present six possible ways to normalize injection‐related leakage relative to no‐injection leakage. We calculate leakage using semi‐analytical solutions for single‐phase flow and model reservoir pressurization and flow up (single) leaky wells located progressively farther from the injection well. For an example case of relative overpressure and using an injection‐rate‐based approach, results show 50‒60% larger open‐well‐leakage ratesmore »
- Authors:
-
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Montana State Univ., Bozeman, MT (United States). Big Sky Carbon Sequestration Partnership
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Fossil Energy (FE)
- OSTI Identifier:
- 1474985
- Alternate Identifier(s):
- OSTI ID: 1400985
- Grant/Contract Number:
- AC02-05CH11231; DE‐AC02‐05CH11231
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Greenhouse Gases: Science and Technology
- Additional Journal Information:
- Journal Volume: 6; Journal Issue: 6; Journal ID: ISSN 2152-3878
- Publisher:
- Society of Chemical Industry, Wiley
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 58 GEOSCIENCES; 54 ENVIRONMENTAL SCIENCES; Class VI; overpressured reservoirs; non‐hydrostatic; USDW endangerment
Citation Formats
Oldenburg, Curtis M., Cihan, Abdullah, Zhou, Quanlin, Fairweather, Stacey, and Spangler, Lee H. Geologic carbon sequestration injection wells in overpressured storage reservoirs: estimating area of review. United States: N. p., 2016.
Web. doi:10.1002/ghg.1607.
Oldenburg, Curtis M., Cihan, Abdullah, Zhou, Quanlin, Fairweather, Stacey, & Spangler, Lee H. Geologic carbon sequestration injection wells in overpressured storage reservoirs: estimating area of review. United States. https://doi.org/10.1002/ghg.1607
Oldenburg, Curtis M., Cihan, Abdullah, Zhou, Quanlin, Fairweather, Stacey, and Spangler, Lee H. Wed .
"Geologic carbon sequestration injection wells in overpressured storage reservoirs: estimating area of review". United States. https://doi.org/10.1002/ghg.1607. https://www.osti.gov/servlets/purl/1474985.
@article{osti_1474985,
title = {Geologic carbon sequestration injection wells in overpressured storage reservoirs: estimating area of review},
author = {Oldenburg, Curtis M. and Cihan, Abdullah and Zhou, Quanlin and Fairweather, Stacey and Spangler, Lee H.},
abstractNote = {Abstract The Area of Review (AoR) under the US Environmental Protection Agency's (EPA) Class VI CO 2 injection permit is defined as the region surrounding the geologic carbon sequestration (GCS) project where underground sources of drinking water (USDWs) may be endangered. Estimation of the AoR is based on the calculated reservoir pressurization due to CO 2 injection and the associated potential to lift saline water into potable groundwater aquifers through open flow paths (e.g. wells) assuming the system is hydrostatic. In cases where the storage reservoirs are not initially hydrostatic, and in particular where they are overpressured, AoR estimation methods need to be altered. In this paper, we present and apply an approach to evaluating potential endangerment of USDW based on comparing brine leakage through a hypothetical open flow path in a no‐injection scenario and brine leakage in a CO 2 ‐injection scenario. We present six possible ways to normalize injection‐related leakage relative to no‐injection leakage. We calculate leakage using semi‐analytical solutions for single‐phase flow and model reservoir pressurization and flow up (single) leaky wells located progressively farther from the injection well. For an example case of relative overpressure and using an injection‐rate‐based approach, results show 50‒60% larger open‐well‐leakage rates for wells located at 2 km and 10% increase for wells located at 10 km from the injection well relative to the no‐injection case. If total brine leakage is considered, the results depend strongly on the assumed pre‐injection to post‐injection time frames and on the methods of normalization used to calculate incremental leakage. © 2016 Society of Chemical Industry and John Wiley & Sons, Ltd},
doi = {10.1002/ghg.1607},
journal = {Greenhouse Gases: Science and Technology},
number = 6,
volume = 6,
place = {United States},
year = {Wed Jun 29 00:00:00 EDT 2016},
month = {Wed Jun 29 00:00:00 EDT 2016}
}
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