Microbial (biogenic) natural gas is present in shale, coal and petroleum reservoirs and is estimated to account for 20% of the world’s natural gas resources. We provide hydrological, geochemical and microbial information related to the production of biogenic natural gas and new methods to monitor and enhance the production of this energy resource. Generating microbial methane at a faster rate from subsurface hydrocarbon deposits could extend the life of natural gas wells through microbially-enhanced natural gas production. This technology could increase natural gas resources and utilize existing infrastructure once in-ground resources have been depleted (e.g., depleted oil and gas reservoirs).
Below are other science projects associated with this project task.
Geochemistry of Energy Fuels Project
Geochemistry of Energy Fuels Task
Molecular Fingerprinting of Energy Materials
Byproducts of Energy Fuels
NORM Byproducts of Energy Resources
Maps of Energy Occurrence
Trace Elements in Energy Fuels
Controls on Unconventional Oil and Gas Production
Below are publications associated with this project task.
Coal biomethanation potential of various ranks from Pakistan: A possible alternative energy source
Changes in microbial communities and associated water and gas geochemistry across a sulfate gradient in coal beds: Powder River Basin, USA
Type and amount of organic amendments affect enhanced biogenic methane production from coal and microbial community structure
Biogenic coal-to-methane conversion efficiency decreases after repeated organic amendment
Microbial methane from in situ biodegradation of coal and shale: A review and reevaluation of hydrogen and carbon isotope signatures
Enhanced coal-dependent methanogenesis coupled with algal biofuels: Potential water recycle and carbon capture
Environmental drivers of differences in microbial community structure in crude oil reservoirs across a methanogenic gradient
Cultivation of a native alga for biomass and biofuel accumulation in coal bed methane production water
Structural degradation of Thar lignite using MW1 fungal isolate: optimization studies
Potential role of acetyl-CoA synthetase (acs) and malate dehydrogenase (mae) in the evolution of the acetate switch in Bacteria and Archaea
- Overview
Microbial (biogenic) natural gas is present in shale, coal and petroleum reservoirs and is estimated to account for 20% of the world’s natural gas resources. We provide hydrological, geochemical and microbial information related to the production of biogenic natural gas and new methods to monitor and enhance the production of this energy resource. Generating microbial methane at a faster rate from subsurface hydrocarbon deposits could extend the life of natural gas wells through microbially-enhanced natural gas production. This technology could increase natural gas resources and utilize existing infrastructure once in-ground resources have been depleted (e.g., depleted oil and gas reservoirs).
- Science
Below are other science projects associated with this project task.
Geochemistry of Energy Fuels Project
Since its establishment in 1879, USGS geoscientists have investigated the geochemistry of energy resources. Research conducted in the Geochemistry of Energy Fuels project continues this tradition. Goals include 1) understanding the geologic, geochemical, microbiological, and other factors that control production, quality, and composition of coal, petroleum, and nuclear fuels, and 2) predicting the...Geochemistry of Energy Fuels Task
Geologic and geochemical processes that impact fuel quality, quantity, and availability can be best understood by utilizing a range of approaches, including, but not limited to isotopic signatures, inorganic and organic analyses, and neutron scattering techniques. Current work focuses on using neutron scattering to understand how fluids are stored and flow through tight continuous reservoirs and...Molecular Fingerprinting of Energy Materials
The chemical composition of complex solid organic matter (OM) from sedimentary reservoirs is a key parameter in the generation of hydrocarbon fuels. Vibrational spectroscopies such as Fourier transform infrared (FTIR) and Raman have been widely applied to understand the molecular make-up of these hydrocarbon precursors, as well as provide links to their thermal histories via correlation to proven...Byproducts of Energy Fuels
This task provides detailed information on the use and resource potential of energy by-products, as well as controls on the potential mobility of contaminants resulting from transport, storage, and disposal of these byproducts. Specific topics investigated include 1) transport and fate of organic and inorganic contaminants during storage and disposal of waste coal and coal combustion byproducts...NORM Byproducts of Energy Resources
Naturally Occurring Radioactive Material (NORM) is found in waste produced during the extraction of uranium, phosphate, rare earth elements (REE), coal, oil and gas resources. The focus of this effort is to understand the potential for byproduct recovery of U-235 and Th-232, the fissionable isotopes used to generate nuclear energy from wastes produced during energy resource development. The NORM...Maps of Energy Occurrence
The primary objective of this task is to produce digital maps coal-bearing areas and related energy sources and materials of the U.S., and internationally. The approach for creating GIS representations of energy sources of the U.S. and the world is to use existing geologic GIS data where possible, supplemented by data on location, rank and age from published maps and reports. Each GIS database...Trace Elements in Energy Fuels
In this task we conduct new interpretive studies of the concentration and distribution of trace metals and mercury in coal and other energy materials. Complementary studies of coal combustion products are conducted under Task 8. Together with use of existing USGS databases, we examine the potential for reducing emissions of potentially toxic substances by coal preparation, and by optimizing coal...Controls on Unconventional Oil and Gas Production
This scoping task incorporates insights from new approaches to production of unconventional resources and currently focuses on conducting a pilot assessment of biogenic natural gas resources in the Permian Basin. For the pilot assessment to occur, we are developing a database that will host geochemical parameters known to be suggestive of microbial methanogenesis mined to the reservoir level for... - Publications
Below are publications associated with this project task.
Coal biomethanation potential of various ranks from Pakistan: A possible alternative energy source
The present study investigated the possibility of microbial transformations of coal to gas (biogasification) as an alternative to conventional coal mining because this approach has the potential to be less expensive, cleaner, and providinge greater access to deeper coal resources. Biogasification is often associated with low rank coal such as lignite and subbituminous coal that hasve produced enouAuthorsAneela Y. Malik, Muhammad Ishtiaq Ali, Asif Jamal, Uzma Farooq, Nazia Khatoon, William H. Orem, Elliott P. Barnhart, John R. SanFilipo, Huan He, Zaixing HuangChanges in microbial communities and associated water and gas geochemistry across a sulfate gradient in coal beds: Powder River Basin, USA
Competition between microbial sulfate reduction and methanogenesis drives cycling of fossil carbon and generation of CH4 in sedimentary basins. However, little is understood about the fundamental relationship between subsurface aqueous geochemistry and microbiology that drives these processes. Here we relate elemental and isotopic geochemistry of coal-associated water and gas to the microbial commAuthorsHannah Schweitzer, Daniel Ritter, Jennifer McIntosh, Elliott Barnhart, Alfred B. Cunningham, David Vinson, William H. Orem, Matthew W. FieldsType and amount of organic amendments affect enhanced biogenic methane production from coal and microbial community structure
Slow rates of coal-to-methane conversion limit biogenic methane production from coalbeds. This study demonstrates that rates of coal-to-methane conversion can be increased by the addition of small amounts of organic amendments. Algae, cyanobacteria, yeast cells, and granulated yeast extract were tested at two concentrations (0.1 and 0.5 g/L), and similar increases in total methane produced and metAuthorsKatherine J. Davis, Shipeng Lu, Elliott P. Barnhart, Albert E. Parker, Matthew W. Fields, Robin GerlachBiogenic coal-to-methane conversion efficiency decreases after repeated organic amendment
Addition of organic amendments to coal-containing systems can increase the rate and extent of biogenic methane production for 60–80 days before production slows or stops. Understanding the effect of repeated amendment additions on the rate and extent of enhanced coal-dependent methane production is important if biological coal-to-methane conversion is to be enhanced on a commercial scale. MicroalgAuthorsKatherine J. Davis, Elliott P. Barnhart, Matthew W. Fields, Robin GerlachMicrobial methane from in situ biodegradation of coal and shale: A review and reevaluation of hydrogen and carbon isotope signatures
Stable carbon and hydrogen isotope signatures of methane, water, and inorganic carbon are widely utilized in natural gas systems for distinguishing microbial and thermogenic methane and for delineating methanogenic pathways (acetoclastic, hydrogenotrophic, and/or methylotrophic methanogenesis). Recent studies of coal and shale gas systems have characterized in situ microbial communities and providAuthorsDavid S. Vinson, Neal E. Blair, Anna M. Martini, Steve Larter, William H. Orem, Jennifer C. McIntoshEnhanced coal-dependent methanogenesis coupled with algal biofuels: Potential water recycle and carbon capture
Many coal beds contain microbial communities that can convert coal to natural gas (coalbed methane). Native microorganisms were obtained from Powder River Basin (PRB) coal seams with a diffusive microbial sampler placed downhole and used as an inoculum for enrichments with different nutrients to investigate microbially-enhanced coalbed methane production (MECoM). Coal-dependent methanogenesis moreAuthorsElliott P. Barnhart, Katherine J. Davis, Matthew S. Varonka, William H. Orem, Alfred B. Cunningham, Bradley D. Ramsay, Matthew W. FieldsEnvironmental drivers of differences in microbial community structure in crude oil reservoirs across a methanogenic gradient
Stimulating in situ microbial communities in oil reservoirs to produce natural gas is a potentially viable strategy for recovering additional fossil fuel resources following traditional recovery operations. Little is known about what geochemical parameters drive microbial population dynamics in biodegraded, methanogenic oil reservoirs. We investigated if microbial community structure was significaAuthorsJenna L. Shelton, Denise M. Akob, Jennifer C. McIntosh, Noah Fierer, John R. Spear, Peter D. Warwick, John E. McCrayCultivation of a native alga for biomass and biofuel accumulation in coal bed methane production water
Coal bed methane (CBM) production has resulted in thousands of ponds in the Powder River Basin of low-quality water in a water-challenged region. A green alga isolate, PW95, was isolated from a CBM production pond, and analysis of a partial ribosomal gene sequence indicated the isolate belongs to the Chlorococcaceae family. Different combinations of macro- and micronutrients were evaluated for PW9AuthorsLogan H. Hodgskiss, Justin Nagy, Elliott P. Barnhart, Alfred B. Cunningham, Matthew W. FieldsStructural degradation of Thar lignite using MW1 fungal isolate: optimization studies
Biological degradation of low-rank coals, particularly degradation mediated by fungi, can play an important role in helping us to utilize neglected lignite resources for both fuel and non-fuel applications. Fungal degradation of low-rank coals has already been investigated for the extraction of soil-conditioning agents and the substrates, which could be subjected to subsequent processing for the gAuthorsRizwan Haider, Muhammad A. Ghauri, Elizabeth J. Jones, William H. Orem, John R. SanFilipoPotential role of acetyl-CoA synthetase (acs) and malate dehydrogenase (mae) in the evolution of the acetate switch in Bacteria and Archaea
Although many Archaea have AMP-Acs (acetyl-coenzyme A synthetase) and ADP-Acs, the extant methanogenic genus Methanosarcina is the only identified Archaeal genus that can utilize acetate via acetate kinase (Ack) and phosphotransacetylase (Pta). Despite the importance of ack as the potential urkinase in the ASKHA phosphotransferase superfamily, an origin hypothesis does not exist for the acetate kiAuthorsElliott P. Barnhart, Marcella A. McClure, Kiki Johnson, Sean Cleveland, Kristopher A. Hunt, Matthew W. Fields