Carbon Dioxide (CO2) is utilized by industry to enhance oil recovery. Subsurface CO2 storage could significantly impact reduction of CO2 emissions to the atmosphere, but the economics and potential risks associated with the practice must be understood before implementing extensive programs or regulations. Utilization of other energy-related gases such as helium (He), if separated and concentrated from the produced natural gas stream, can make otherwise low-thermal (un-economic) natural gas deposits a viable part of the national natural gas resource base. Geologic energy storage options require additional investigation and assessments of available storage resources.
Federal Lands Greenhouse Gas Emissions and Sequestration in the U.S.

The USGS has produced estimates of the greenhouse gas emissions resulting from the extraction and end-use combustion of fossil fuels produced on Federal lands in the United States, as well as estimates of ecosystem carbon emissions and sequestration.
Downloadable Geologic Carbon Dioxide Sequestration Spatial Data

A list of downloadable geologic carbon dioxide sequestration spatial data and associated geologic reports is available here.
Our interactive web map includes investigated basins, assessed areas, stratigraphic columns, and well density information.
Geologic Carbon Dioxide Utilization Topics
- Assessment Methodologies
- National Carbon Dioxide Storage Assessment Results
- Select Energy Resources Program Carbon Dioxide Publications
- Global Carbon Dioxide Storage Resource Assessments
- Project Staff
- Geologic Carbon Sequestration Project Overview Handout
- Helium Concentrations in United States Wells
The Utilization of Carbon and other Energy Gases – Geologic Research and Assessments project conducts science to:
- Estimate how much oil can be produced by injecting CO2 into reservoirs for enhanced oil recovery
- Estimate the amount of CO2 that could be stored in geologic reservoirs nationwide
- Assess the environmental risks of storing CO2 in underground reservoirs, including the potential for CO2 leakage, impacts to drinking water, and induced seismicity
- Evaluate the origin, distribution, and resource-potential of non-hydrocarbon natural gases
- Evaluate subsurface geologic energy storage options including natural gas storage, compressed air storage, pumped hydroelectric storage, and geothermal storage
During the course of the Utilization of Carbon and other Energy Gases – Geologic Research and Assessments project, the following research and assessment topics are being investigated:
- Methodology Development and Assessment of National Carbon Dioxide Enhanced Oil Recovery and Associated Carbon Dioxide Storage Potential
- Geologic Carbon Dioxide and Energy-related Storage, Gas Resources, and Utilization
- Assessing Emissions from Active and Abandoned Coal Mines
- Geologic Energy Storage
- Induced Seismicity Associated with Carbon Dioxide Geologic Storage
- Economics of Energy Transitions
Slideshows Associated with Project Member Talks:
- National Unplugged Orphan Oil and Gas Well Database - Presentation [.pdf] [3.71 MB]
- Carbon Dioxide Mineralization Feasibility in the United States [.pdf] [3.91 MB]
- Subsurface Carbon and Energy Storage Resource Assessments [.pdf] [1.74 MB]
- Federal lands greenhouse gas emissions and sequestration – a modified EPA methodology [.pdf]
- A Pressure-limited Model to Estimate CO2 Injection and Storage Capacity of Saline Formations: Investigating the Effects of Formation Properties, Model Variables and Presence of Hydrocarbon Reservoirs [.pdf] [1.2 MB]
- Enhanced Oil Recovery and Residual Oil Zone Studies at the U.S. Geological Survey [.pdf] [2.0 MB]
- Overview of USGS Carbon Sequestration - Geologic Research and Assessments Project [.pdf] [2.1 MB]
- Microseismicity Monitoring at the Decatur, IL, CO2 Sequestration Demonstration Site [.pdf] [8.9 MB]
- Status Report: Estimating greenhouse gas emissions from fossil fuels produced from Federal lands [.pdf] [1.2 MB]
- A Probabilistic Assessment Methodology for Carbon Dioxide Enhanced Oil Recovery and Associated Carbon Dioxide Retention [.pdf] [.67 MB]
- A Database and Probabilistic Assessment Methodology for Carbon Dioxide Enhanced Oil Recovery and Associated Carbon Dioxide Retention in the United States [.pdf] [1.7 MB]
- Enhanced Oil Recovery and CO2 Resource Studies at the U.S. Geological Survey [.pdf] [1.2 MB]
- Induced Seismicity Monitoring at the Decatur, IL, CO2 Sequestration Demonstration Site [YouTube]
- U.S. Geological Survey National Assessment of Geologic Carbon Dioxide Storage Resources and Associated Research [.pdf] [2.3 MB]
- U.S. Geological Survey National Assessment of Geologic Carbon Dioxide Storage Resources and Associated Research [.pdf] [2.6 MB]
- National Assessment of Geologic Carbon Dioxide Storage Resources - Results [.pdf] [2.2 MB]
- Development Philosophy of an Assessment Methodology for Hydrocarbon Recovery Potential Using CO2-EOR Associated with Carbon Sequestration [.pdf] [.57 MB]
- U.S. Geological Survey Geologic Carbon Dioxide Storage Resource Assessment of the United States - 2012 Project Update [.pdf] [3.9 MB]
- Examining Salinity Restrictions for CO2 Storage: Suggestions from Basin to Reservoir Scales [.pdf] [1.9 MB]
- Using ArcGIS to Identify Environmental Risk Factors Associated with CO2 Storage [.pdf] [1.7 MB]
- A Probabilistic Assessment Methodology for the Evaluation of Geologic Carbon Dioxide Storage [.pdf] [1.4 MB]
- CO2 Fluid Flow Modeling to Derive the Time Scales of Lateral Fluid Migration [.pdf] [1.2 MB]
- U.S. Geological Survey Geologic Carbon Dioxide Storage Resource Assessment of the United States - Project Update [.pdf] [3.3 MB]
Below are other science projects associated with this project.
Economics of Energy Transitions
Geologic Energy Storage
Assessing Emissions from Active and Abandoned Coal Mines
Induced Seismicity Associated with Carbon Dioxide Geologic Storage
Geologic Carbon Dioxide and Energy-related Storage, Gas Resources, and Utilization
Methodology Development and Assessment of National Carbon Dioxide Enhanced Oil Recovery and Associated Carbon Dioxide Storage Potential
Below are data or web applications associated with this project.
Optimization simulations to estimate maximum brine injection rates in the Illinois Basin
United States Documented Unplugged Orphaned Oil and Gas Well Dataset
National assessment of carbon dioxide enhanced oil recovery and associated carbon dioxide retention resources - data release
Geologic formations and mine locations for potential CO2 mineralization
Dataset of Helium Concentrations in United States Wells
Model of groundwater flow, gas migration, and reactive transport in the Virgin River Basin, SW Utah
Geospatial Data for a Preliminary GIS Representation of Deep Coal Areas for Carbon Dioxide Storage in the Contiguous United States and Alaska
Federal Lands Greenhouse Gas Emissions and Sequestration in the United States: Estimates 2005-14 - Data Release
Mercury injection capillary pressure data in the U.S. Gulf Coast Tuscaloosa Group in Mississippi and Louisiana collected 2015 to 2017
Microbiology of the greater Bravo Dome region
Below are publications associated with this project.
Dynamic estimates of geologic CO2 storage resources in the Illinois Basin constrained by reinjectivity of brine extracted for pressure management
Possible effects of multiphase methane evolution during a glacial cycle on underpressure development in sedimentary basins: An analysis with application to the northeast Michigan Basin
National assessment of carbon dioxide enhanced oil recovery and associated carbon dioxide retention resources — Summary
National assessment of carbon dioxide enhanced oil recovery and associated carbon dioxide retention resources — Results
Decision analysis and CO2–Enhanced oil recovery development strategies
National assessment of helium resources within known natural gas reservoirs
Single-well production history matching and geostatistical modeling as proxy to multi-well reservoir simulation for evaluating dynamic reservoir properties of coal seams
Assessing gas leakage potential into coal mines from shale gas well failures: Inference from field determination of strata permeability responses to longwall-induced deformations
Potential Pb+2 mobilization, transport, and sequestration in shallow aquifers impacted by multiphase CO2 leakage: A natural analogue study from the Virgin River Basin in Southwest Utah
Computational methodology to analyze the effect of mass transfer rate on attenuation of leaked carbon dioxide in shallow aquifers
Estimating the net costs of brine production and disposal to expand pressure-limited dynamic capacity for basin-scale CO2 storage in a saline formation
Characterization of the unconventional Tuscaloosa marine shale reservoir in southwestern Mississippi, USA: Insights from optical and SEM petrography
Below are data or web applications associated with this project.
Geologic Carbon Dioxide Sequestration Interactive Map
The Geologic CO2 Sequestration interactive web map includes investigated basins, assessed areas, stratigraphic columns, and well density information.
Federal Lands Emissions and Sequestration in the United States: Estimates 2005-14
This website is a data visualization companion to the U.S. Geological Survey (USGS) report titled Federal Lands Greenhouse Gas Emissions and Sequestration in the United States: Estimates 2005-14. The maps and charts on this site include the estimated emissions and sequestration from both fossil fuel activities and ecosystem processes on Federal lands only.
Below are news stories associated with this project.
Below are FAQ associated with this project.
How does carbon get into the atmosphere?
Atmospheric carbon dioxide comes from two primary sources—natural and human activities. Natural sources of carbon dioxide include most animals, which exhale carbon dioxide as a waste product. Human activities that lead to carbon dioxide emissions come primarily from energy production, including burning coal, oil, or natural gas.Learn more: Sources of Greenhouse Gas Emissions (EPA)
Has the USGS made any Biologic Carbon Sequestration assessments?
The USGS is congressionally mandated (2007 Energy Independence and Security Act) to conduct a comprehensive national assessment of storage and flux (flow) of carbon and the fluxes of other greenhouse gases (including carbon dioxide) in ecosystems. At this writing, reports have been completed for Alaska, the Eastern U.S., the Great Plains, and the Western U.S. Learn more: Land Change Science...
How much carbon dioxide does the United States and the World emit each year from energy sources?
The U.S. Energy Information Administration estimates that in 2019, the United States emitted 5,130 million metric tons of energy-related carbon dioxide, while the global emissions of energy-related carbon dioxide totaled 33,621.5 million metric tons.
Which area is the best for geologic carbon sequestration?
It is difficult to characterize one area as “the best” for carbon sequestration because the answer depends on the question: best for what? However, the area of the assessment with the most storage potential for carbon dioxide is the Coastal Plains region, which includes coastal basins from Texas to Georgia. That region accounts for 2,000 metric gigatons, or 65 percent, of the storage potential...
How much carbon dioxide can the United States store via geologic sequestration?
In 2013, the USGS released the first-ever comprehensive, nation-wide assessment of geologic carbon sequestration, which estimates a mean storage potential of 3,000 metric gigatons of carbon dioxide. The assessment is the first geologically-based, probabilistic assessment, with a range of 2,400 to 3,700 metric gigatons of potential carbon dioxide storage. In addition, the assessment is for the...
What’s the difference between geologic and biologic carbon sequestration?
Geologic carbon sequestration is the process of storing carbon dioxide (CO2) in underground geologic formations. The CO2 is usually pressurized until it becomes a liquid, and then it is injected into porous rock formations in geologic basins. This method of carbon storage is also sometimes a part of enhanced oil recovery, otherwise known as tertiary recovery, because it is typically used later in...
What is carbon sequestration?
Carbon dioxide is the most commonly produced greenhouse gas. Carbon sequestration is the process of capturing and storing atmospheric carbon dioxide. It is one method of reducing the amount of carbon dioxide in the atmosphere with the goal of reducing global climate change. The USGS is conducting assessments on two major types of carbon sequestration: geologic and biologic.
Below are partners associated with this project.
- Overview
Carbon Dioxide (CO2) is utilized by industry to enhance oil recovery. Subsurface CO2 storage could significantly impact reduction of CO2 emissions to the atmosphere, but the economics and potential risks associated with the practice must be understood before implementing extensive programs or regulations. Utilization of other energy-related gases such as helium (He), if separated and concentrated from the produced natural gas stream, can make otherwise low-thermal (un-economic) natural gas deposits a viable part of the national natural gas resource base. Geologic energy storage options require additional investigation and assessments of available storage resources.
Federal Lands Greenhouse Gas Emissions and Sequestration in the U.S.The USGS has produced estimates of the greenhouse gas emissions resulting from the extraction and end-use combustion of fossil fuels produced on Federal lands in the United States, as well as estimates of ecosystem carbon emissions and sequestration.
Downloadable Geologic Carbon Dioxide Sequestration Spatial DataA list of downloadable geologic carbon dioxide sequestration spatial data and associated geologic reports is available here.
Our interactive web map includes investigated basins, assessed areas, stratigraphic columns, and well density information.
Geologic Carbon Dioxide Utilization Topics- Assessment Methodologies
- National Carbon Dioxide Storage Assessment Results
- Select Energy Resources Program Carbon Dioxide Publications
- Global Carbon Dioxide Storage Resource Assessments
- Project Staff
- Geologic Carbon Sequestration Project Overview Handout
- Helium Concentrations in United States Wells
The Utilization of Carbon and other Energy Gases – Geologic Research and Assessments project conducts science to:
- Estimate how much oil can be produced by injecting CO2 into reservoirs for enhanced oil recovery
- Estimate the amount of CO2 that could be stored in geologic reservoirs nationwide
- Assess the environmental risks of storing CO2 in underground reservoirs, including the potential for CO2 leakage, impacts to drinking water, and induced seismicity
- Evaluate the origin, distribution, and resource-potential of non-hydrocarbon natural gases
- Evaluate subsurface geologic energy storage options including natural gas storage, compressed air storage, pumped hydroelectric storage, and geothermal storage
During the course of the Utilization of Carbon and other Energy Gases – Geologic Research and Assessments project, the following research and assessment topics are being investigated:
- Methodology Development and Assessment of National Carbon Dioxide Enhanced Oil Recovery and Associated Carbon Dioxide Storage Potential
- Geologic Carbon Dioxide and Energy-related Storage, Gas Resources, and Utilization
- Assessing Emissions from Active and Abandoned Coal Mines
- Geologic Energy Storage
- Induced Seismicity Associated with Carbon Dioxide Geologic Storage
- Economics of Energy Transitions
Slideshows Associated with Project Member Talks:
- National Unplugged Orphan Oil and Gas Well Database - Presentation [.pdf] [3.71 MB]
- Carbon Dioxide Mineralization Feasibility in the United States [.pdf] [3.91 MB]
- Subsurface Carbon and Energy Storage Resource Assessments [.pdf] [1.74 MB]
- Federal lands greenhouse gas emissions and sequestration – a modified EPA methodology [.pdf]
- A Pressure-limited Model to Estimate CO2 Injection and Storage Capacity of Saline Formations: Investigating the Effects of Formation Properties, Model Variables and Presence of Hydrocarbon Reservoirs [.pdf] [1.2 MB]
- Enhanced Oil Recovery and Residual Oil Zone Studies at the U.S. Geological Survey [.pdf] [2.0 MB]
- Overview of USGS Carbon Sequestration - Geologic Research and Assessments Project [.pdf] [2.1 MB]
- Microseismicity Monitoring at the Decatur, IL, CO2 Sequestration Demonstration Site [.pdf] [8.9 MB]
- Status Report: Estimating greenhouse gas emissions from fossil fuels produced from Federal lands [.pdf] [1.2 MB]
- A Probabilistic Assessment Methodology for Carbon Dioxide Enhanced Oil Recovery and Associated Carbon Dioxide Retention [.pdf] [.67 MB]
- A Database and Probabilistic Assessment Methodology for Carbon Dioxide Enhanced Oil Recovery and Associated Carbon Dioxide Retention in the United States [.pdf] [1.7 MB]
- Enhanced Oil Recovery and CO2 Resource Studies at the U.S. Geological Survey [.pdf] [1.2 MB]
- Induced Seismicity Monitoring at the Decatur, IL, CO2 Sequestration Demonstration Site [YouTube]
- U.S. Geological Survey National Assessment of Geologic Carbon Dioxide Storage Resources and Associated Research [.pdf] [2.3 MB]
- U.S. Geological Survey National Assessment of Geologic Carbon Dioxide Storage Resources and Associated Research [.pdf] [2.6 MB]
- National Assessment of Geologic Carbon Dioxide Storage Resources - Results [.pdf] [2.2 MB]
- Development Philosophy of an Assessment Methodology for Hydrocarbon Recovery Potential Using CO2-EOR Associated with Carbon Sequestration [.pdf] [.57 MB]
- U.S. Geological Survey Geologic Carbon Dioxide Storage Resource Assessment of the United States - 2012 Project Update [.pdf] [3.9 MB]
- Examining Salinity Restrictions for CO2 Storage: Suggestions from Basin to Reservoir Scales [.pdf] [1.9 MB]
- Using ArcGIS to Identify Environmental Risk Factors Associated with CO2 Storage [.pdf] [1.7 MB]
- A Probabilistic Assessment Methodology for the Evaluation of Geologic Carbon Dioxide Storage [.pdf] [1.4 MB]
- CO2 Fluid Flow Modeling to Derive the Time Scales of Lateral Fluid Migration [.pdf] [1.2 MB]
- U.S. Geological Survey Geologic Carbon Dioxide Storage Resource Assessment of the United States - Project Update [.pdf] [3.3 MB]
- Science
Below are other science projects associated with this project.
Economics of Energy Transitions
This task conducts research to characterize or evaluate the economics of developing technologies or markets in geologic resources. Such research can analyze the relative risks, costs, and benefits from the utilization and not just the extraction of underground resource. Economic analysis builds upon the geologic resource assessment work by other tasks in the Utilization of Carbon and other Energy...Geologic Energy Storage
The United States (U.S.) domestic energy supply increasingly relies on natural gas and renewable sources; however, their efficient use is limited by supply and demand constraints. For example, a) in summer, natural gas production may outpace home heating fuel demand and b) in daytime, wind and solar electricity production may outpace industrial power requirements. Storing rather than dumping...Assessing Emissions from Active and Abandoned Coal Mines
The gas emission zone liberates and accumulates significant amounts of coal mine methane as a by-product of active mining. In most active mines, coal mine methane is controlled by wellbores, called gob gas ventholes. Despite the presence of these wellbores, it is not possible to capture all of the methane generated within the gas emission zone. As a consequence, a large amount of gas migrates into...Induced Seismicity Associated with Carbon Dioxide Geologic Storage
As a national science agency, the USGS is responsible for assessing hazards from earthquakes throughout the United States. The USGS studies induced seismicity across the spectrum of energy issues: carbon sequestration, geothermal energy, and conventional and unconventional oil and gas. In the central and eastern United States, earthquakes induced by fluid injection activities contribute...Geologic Carbon Dioxide and Energy-related Storage, Gas Resources, and Utilization
The objectives of this task are to conduct relevant research needed to 1) evaluate helium (He) and CO2 resources; 2) support future assessments of low-thermal gases and better understand their resources and potential for use as analogues for anthropogenic CO2 storage; 3) study the feasibility of large-scale CO2 mineralization in the United States; 4) develop pressure-limited dynamic models for...Methodology Development and Assessment of National Carbon Dioxide Enhanced Oil Recovery and Associated Carbon Dioxide Storage Potential
The objective of this research task is to conduct a national assessment of recoverable oil related to CO2 injection. The amount of CO2 stored (utilized) during the hydrocarbon recovery process will also be evaluated. - Data
Below are data or web applications associated with this project.
Optimization simulations to estimate maximum brine injection rates in the Illinois Basin
We developed a methodology to estimate maximum brine injection rates in subsurface formations across wide geographic areas using inverse modeling-based optimization techniques. We first defined geographic areas where groundwater was too saline to meet the standard for drinking water and where sufficient confining units existed above and below the injection layers. We then assumed concurrent brineUnited States Documented Unplugged Orphaned Oil and Gas Well Dataset
The United States Documented Unplugged Orphaned Oil and Gas Well Dataset contains 117,672 wells in 27 states. The definition of an orphaned oil or gas well varies across data sources; the dataset includes oil or gas wells where the state indicates that the well is an unplugged orphan, or the following criteria are met: 1) no production for an average of 12 months (6 to 24 months depending on the sNational assessment of carbon dioxide enhanced oil recovery and associated carbon dioxide retention resources - data release
In 2020, the U.S. Geological Survey (USGS) completed a probabilistic assessment of the volume of technically recoverable oil resources available if current carbon dioxide enhanced oil recovery (CO2-EOR) technologies were applied in amenable oil reservoirs underlying the onshore and State waters area of the conterminous United States. The assessment also includes estimates of the magnitude of CO2 sGeologic formations and mine locations for potential CO2 mineralization
This geodatabase contains geologic unit boundaries and asbestos site locations shown in "Carbon dioxide mineralization feasibility in the United States" (Blondes and others, 2019). Data was compiled from source material at a scale range of 1:100,000 to 1:5,000,000 and is not intended for any greater detail.Dataset of Helium Concentrations in United States Wells
This dataset provides national scale location information for known, publicly available, data on helium gas concentrations, reported in mol%. The dataset was created as part of the effort by the United States Geological Survey (USGS) to conduct an assessment of helium resources in accordance with the Helium Stewardship Act of 2013, Public Law 113-40. The data were collected from the USGS Energy GeModel of groundwater flow, gas migration, and reactive transport in the Virgin River Basin, SW Utah
To better understand the possible risks posed to shallow groundwater resources by geologic carbon sequestration (GCS), a multi-scale numerical modeling approach was invoked using the TOUGHREACT code from Lawrence Berkeley National Laboratory. The code solves coupled equations representing conservation of mass and energy on a finite difference grid to simulate multiphase, multicomponent, non-isotheGeospatial Data for a Preliminary GIS Representation of Deep Coal Areas for Carbon Dioxide Storage in the Contiguous United States and Alaska
These geospatial data and their accompanying report outline many areas of coal in the United States beneath more than 3,000 ft of overburden. Based on depth, these areas may be targets for injection and storage of supercritical carbon dioxide. Additional areas where coal exists beneath more than 1,000 ft of overburden are also outlined; these may be targets for geologic storage of carbon dioxide iFederal Lands Greenhouse Gas Emissions and Sequestration in the United States: Estimates 2005-14 - Data Release
This dataset includes ten years of emissions and sequestration estimates (2005-2014) in two separate tables, 1) the combustion and extraction of fossil fuels on Federal lands and 2) processes from the ecosystems on those Federal lands. The fossil fuel related estimates include the greenhouse gases carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O), and the ecosystems estimates include onMercury injection capillary pressure data in the U.S. Gulf Coast Tuscaloosa Group in Mississippi and Louisiana collected 2015 to 2017
This data release contains mercury injection capillary pressure (MICP), pseudo-wetting saturation, and carbon dioxide (CO2) column height data for subsurface Tuscaloosa Group samples from Mississippi and Louisiana.Microbiology of the greater Bravo Dome region
Bravo Dome is a commercial natural CO2 field that supplies the gas to depleted oil fields for enhanced oil recovery. In order to understand the distribution of CO2 across the greater Bravo Dome region, including southeastern Colorado and northwestern New Mexico, and to assess the impacts of high CO2 concentrations on microbes in the subsurface, 7 samples were collected from sites associated with h - Multimedia
- Publications
Below are publications associated with this project.
Filter Total Items: 88Dynamic estimates of geologic CO2 storage resources in the Illinois Basin constrained by reinjectivity of brine extracted for pressure management
Geologic carbon storage (GCS) is likely to be an important part of global efforts to decarbonize the energy industry. Widespread deployment of GCS relies on strategies to maximize CO2 injection rates while minimizing reservoir pressurization that could induce seismicity and/or fluid leakage into groundwater resources. Brine extraction from CO2 storage formations with subsurface reinjection elsewhePossible effects of multiphase methane evolution during a glacial cycle on underpressure development in sedimentary basins: An analysis with application to the northeast Michigan Basin
In low-permeability systems, groundwater may be accompanied by separate-phase fluids, and measured pore water pressures may deviate from those expected in steady-state, single-phase systems. These same systems may be of interest for storage of nuclear waste in Deep Geologic Repositories. Therefore, it is important to understand the relationship between the presence of a separate phase and anomalouNational assessment of carbon dioxide enhanced oil recovery and associated carbon dioxide retention resources — Summary
IntroductionIn 2020, the U.S. Geological Survey (USGS) completed a probabilistic assessment of the volume of technically recoverable oil resources that might be produced by using current carbon dioxide enhanced oil recovery (CO2-EOR) technologies in amenable conventional oil reservoirs underlying the onshore and State waters areas of the conterminous United States. The assessment also includes estNational assessment of carbon dioxide enhanced oil recovery and associated carbon dioxide retention resources — Results
In 2020, the U.S. Geological Survey (USGS) completed a probabilistic assessment of the volume of technically recoverable oil resources available if current carbon dioxide enhanced oil recovery (CO2-EOR) technologies were applied to amenable oil reservoirs underlying the onshore and State waters areas of the conterminous United States. The assessment also includes estimates of the mass of CO2 thatDecision analysis and CO2–Enhanced oil recovery development strategies
This paper analyzes the relationship between actual reservoir conditions and predicted measures of performance of carbon dioxide enhanced oil recovery (CO2–EOR) programs. It then shows how CO2–EOR operators might maximize the value of their projects by approaching implementation using a “flexible selective” pattern development strategy, where the CO2–EOR program patterns are selectively developedNational assessment of helium resources within known natural gas reservoirs
Using available data, the U.S. Geological Survey estimated that 306 billion cubic feet of recoverable helium is presently within the known geologic natural gas reservoirs of the United States.Single-well production history matching and geostatistical modeling as proxy to multi-well reservoir simulation for evaluating dynamic reservoir properties of coal seams
Reservoir properties of coal seams such as gas and water effective permeabilities and gas content, as well as spatial distributions thereof, affect the success of gas production and CO2-enhanced gas recovery (EGR) with simultaneous CO2 sequestration. These properties change during production and injection operations due to variations in reservoir pressure, matrix shrinkage/swelling, and water satuAssessing gas leakage potential into coal mines from shale gas well failures: Inference from field determination of strata permeability responses to longwall-induced deformations
This paper summarizes the changes in permeability at three boreholes located above an abutment pillar at a longwall coal mine in southwestern Pennsylvania. The motivation of this study was to better characterize the potential interaction between shale gas wells and the mine environment, through measurement of permeability changes in the coal mine overburden caused by mining-induced deformations. MPotential Pb+2 mobilization, transport, and sequestration in shallow aquifers impacted by multiphase CO2 leakage: A natural analogue study from the Virgin River Basin in Southwest Utah
Geological carbon sequestration (GCS) is necessary to help meet emissions reduction goals, but groundwater contamination may occur if CO2 and/or brine were to leak out of deep storage formations into the shallow subsurface. For this study, a natural analogue was investigated: in the Virgin River Basin of southwest Utah, water with moderate salinity and high CO2 concentrations is leaking upward intComputational methodology to analyze the effect of mass transfer rate on attenuation of leaked carbon dioxide in shallow aquifers
Exsolution and re-dissolution of CO2 gas within heterogeneous porous media are investigated using experimental data and mathematical modeling. In a set of bench-scale experiments, water saturated with CO2 under a given pressure is injected into a 2-D water-saturated porous media system, causing CO2 gas to exsolve and migrate upwards. A layer of fine sand mimicking a heterogeneity within a shallowEstimating the net costs of brine production and disposal to expand pressure-limited dynamic capacity for basin-scale CO2 storage in a saline formation
If carbon capture and storage (CCS) needs to be deployed at basin- or larger-scale, it is likely that multiple sites will be injecting carbon dioxide (CO2) into the same geologic formation. This could lead to excessive pressure buildup, overlapping induced pressure fronts, and pressure interference with neighboring uses of the subsurface. Extracting the in situ brine from the storage formation couCharacterization of the unconventional Tuscaloosa marine shale reservoir in southwestern Mississippi, USA: Insights from optical and SEM petrography
This study presents new optical petrography and electron microscopy data, interpreted in the context of previously published petrophysical, geochemical, and mineralogical data, to further characterize the Tuscaloosa marine shale (TMS) as an unconventional reservoir in southwestern Mississippi. The basal high resistivity zone has a higher proportion of Type II sedimentary organic matter than the ov - Web Tools
Below are data or web applications associated with this project.
Geologic Carbon Dioxide Sequestration Interactive Map
The Geologic CO2 Sequestration interactive web map includes investigated basins, assessed areas, stratigraphic columns, and well density information.
Federal Lands Emissions and Sequestration in the United States: Estimates 2005-14
This website is a data visualization companion to the U.S. Geological Survey (USGS) report titled Federal Lands Greenhouse Gas Emissions and Sequestration in the United States: Estimates 2005-14. The maps and charts on this site include the estimated emissions and sequestration from both fossil fuel activities and ecosystem processes on Federal lands only.
- News
Below are news stories associated with this project.
- FAQ
Below are FAQ associated with this project.
How does carbon get into the atmosphere?
Atmospheric carbon dioxide comes from two primary sources—natural and human activities. Natural sources of carbon dioxide include most animals, which exhale carbon dioxide as a waste product. Human activities that lead to carbon dioxide emissions come primarily from energy production, including burning coal, oil, or natural gas.Learn more: Sources of Greenhouse Gas Emissions (EPA)
Has the USGS made any Biologic Carbon Sequestration assessments?
The USGS is congressionally mandated (2007 Energy Independence and Security Act) to conduct a comprehensive national assessment of storage and flux (flow) of carbon and the fluxes of other greenhouse gases (including carbon dioxide) in ecosystems. At this writing, reports have been completed for Alaska, the Eastern U.S., the Great Plains, and the Western U.S. Learn more: Land Change Science...
How much carbon dioxide does the United States and the World emit each year from energy sources?
The U.S. Energy Information Administration estimates that in 2019, the United States emitted 5,130 million metric tons of energy-related carbon dioxide, while the global emissions of energy-related carbon dioxide totaled 33,621.5 million metric tons.
Which area is the best for geologic carbon sequestration?
It is difficult to characterize one area as “the best” for carbon sequestration because the answer depends on the question: best for what? However, the area of the assessment with the most storage potential for carbon dioxide is the Coastal Plains region, which includes coastal basins from Texas to Georgia. That region accounts for 2,000 metric gigatons, or 65 percent, of the storage potential...
How much carbon dioxide can the United States store via geologic sequestration?
In 2013, the USGS released the first-ever comprehensive, nation-wide assessment of geologic carbon sequestration, which estimates a mean storage potential of 3,000 metric gigatons of carbon dioxide. The assessment is the first geologically-based, probabilistic assessment, with a range of 2,400 to 3,700 metric gigatons of potential carbon dioxide storage. In addition, the assessment is for the...
What’s the difference between geologic and biologic carbon sequestration?
Geologic carbon sequestration is the process of storing carbon dioxide (CO2) in underground geologic formations. The CO2 is usually pressurized until it becomes a liquid, and then it is injected into porous rock formations in geologic basins. This method of carbon storage is also sometimes a part of enhanced oil recovery, otherwise known as tertiary recovery, because it is typically used later in...
What is carbon sequestration?
Carbon dioxide is the most commonly produced greenhouse gas. Carbon sequestration is the process of capturing and storing atmospheric carbon dioxide. It is one method of reducing the amount of carbon dioxide in the atmosphere with the goal of reducing global climate change. The USGS is conducting assessments on two major types of carbon sequestration: geologic and biologic.
- Partners
Below are partners associated with this project.