Selected References about Devonian Shales
The following are some geological references regarding Devonian shales in general,
containing some information about the Marcellus Shale
This work is supported in part by RDS Agreement 41817M4160 and the U.S. Department of Energy Contract DE-AC26-04NT41817.630.01.14.
Marcellus maps updated 10/2014; data current through 09/2014
Please note: Various items within the following section "Presentations, Publications, and Other References" contain maps
|View an Interactive Map
||Download a PDF
Marcellus Interactive Mapping Application
for West Virginia featuring:
- Marcellus wells,
- Marcellus thickness,
- Marcellus outcrop, and
- Onondaga Structure
Coming soon... a WMS interactive map (via ArcGIS Server)
Use the service in your own application.
Check back for the beta version!
Download a 300 dpi PDF (1,190 KB)
For printing, choose to:
- reduce or scale to fit 8.5" x 11" paper
- use "landscape" mode
Significance of the Onondaga Map Layers
Map layers associated with the Marcellus Shale in the interactive mapping system include various Onondaga map layers. This is confusing to
many users--i.e., why don't we use maps showing the Marcellus structure? The answer is simple--because we don't yet have those specific map
layers for the Marcellus Shale. In order to provide this geological information, we are using map layers created for adjacent stratigraphic
units to provide approximately similar information as for the Marcellus.
Structure Map Layers
- The Onondaga Limestone and equivalent units underlie the Marcellus Shale.
The top of the Onondaga Limestone and equivalents is approximately equal to the base of the Marcellus Shale.
So, a map showing the structure on the top of the Onondaga Limestone provides essentially the same information as
a structure map on the base of the Marcellus Shale.
Download metadata (.htm), spreadsheets (.xlsx), and compressed shapefiles (.zip).
Shapefile Projection: North American Datum 1983, UTM Zone 17 North, Transverse Mercator. A ".prj" file is included in the zip folders.
Data files now include information for bottom holes (Bottom Hole Flag, Bottom Hole Location UTME, Bottom Hole Location UTMN, Bottom Hole Location Longitude, Bottom Hole Location Latitude). In addition, data files for completed wells include 2013 production information (2013 Gas Production Reported, 2013 Oil Production Reported, and 2013 NGL Production Reported).
|Marcellus Wells - Completed Episodes Updated 10/2014; data current through 09/2014
|Marcellus Wells - Permitted Episodes Updated 10/2014; data current through 09/2014
|Marcellus Wells - Cancelled Episodes Updated 10/2014; data current through 09/2014
|Scanned E-Logs - Deep Wells Updated 10/2014
|The above files contain a list of wells for which WVGES has scanned e-logs and the well penetrated the top
of the Onondaga Limestone/equivalent or a deeper formation. The Marcellus may or may not be present/recorded on the log. Note that an
unconformity exists between the younger Rhinestreet black shale and the Onondaga Limestone in portions of Cabell, Mason, McDowell, Mingo, and
Wayne counties; the Marcellus and other Hamilton Group shales are thought to be missing in these areas (see Schwietering's maps below). The
individual scanned TIFF images for these logs are available for free downloading through the interactive map application and
the associated well data are available on our online "pipeline" data application
|Marcellus Thickness/Isopach (Line)
formerly referred to as
Hamilton/Selected Shale within the Hamilton
|Marcellus Thickness/Isopach (Polygon)
formerly referred to as
Hamilton/Selected Shale within the Hamilton
|Marcellus Outcrop (Polygon)
||Onondaga Structure (Line)
|Onondaga Faults (Line)
||Onondaga Axes or Folds (Line)
|West Virginia Horizontal Wells
This Excel workbook contains data on horizontal wells in the WVGES database.
The first sheet in the spreadsheet is a description of the data fields contained in the following two sheets: "Completed Horizontal Wells" and "Permitted Horizontal Wells".
While most of the records in these files represent horizontal completions or planned horizontal completions in the Marcellus Shale and the Lower Huron shale, more than 17 other formations are also represented here.
The "Operator Name" reflects the operator which drilled the well (or owned the well at time of completion).
This may or may not be the same operator who reported production for the wells, as the well may have been sold after it was completed.
In the data sheets, zeroes represent values submitted by the operator as zero values, whereas blank (null) fields were not reported/submitted.
The spreadsheet data are refreshed weekly to reflect updates added by staff during the week.
Latitudinal and longitudinal values as well as UTM coordinates (for NAD 83, UTM zone 17 north) for the surface vertical bore are included in the well data--i.e., you can create GIS files (shapefiles, file geodatabase, KML, etc) from the data.
- WVGES Summaries:
In reference to the production summaries, please note the following:
- production data include production volumes for commingled wells,
- operators are those associated with production data and do not necessarily correspond to the completion operator for the drilling episode, and
- values and rankings in the summaries may change if additional or more accurate data are received.
- WVGES Presentation: Overview of Gas and Oil Resources in West Virginia
WVOilGasResourcesGeologyMarcellus_WVSAF02052009.pdf (PDF, 3.05 MB)
- WVGES Presentation: Geology of the Marcellus Shale
WVGES_GeologyMarcellusShale.pdf (PDF, 1.13 MB)
- WVGES Poster for ES-AAPG Meeting (2008): New Interest in Cores Taken Thirty Years Ago: the Devonian Marcellus
Shale in Northern West Virginia— Katharine Lee Avary (WVGES) and Eric Lewis (WVGES):
http://www.papgrocks.org/avary_pp.pdf (PDF, 2.72 MB)
- WVGES Report (1997): Enhancement of the Appalachian Basin Devonian Shale Resource Base in the GRI Hydrocarbon Model
gri.pdf (PDF, 3.28 MB)
- WVGES Reference (1980): About the Devonian Hamilton Group
Isopach maps of the Devonian Hamilton Group (the Marcellus Shale is the lowest member of the Hamilton Group) and of the highly radioactive shale within the
Hamilton Group were prepared by Joseph Schwietering and are available at Pages from Schwietering, J.F., 1980, The Occurrence of Oil and Gas in Devonian Shales and Equivalents in West Virginia (PDF, 83.48 KB).
Note that the Hamilton Group is not present in the far western part of the state.
Two chapters in The Atlas of Major Appalachian Gas Plays (John B. Roen and Brian J. Walker, editors, 1996, WVGES Volume 25) address Devonian shales.
The chapter on Upper Devonian black shales includes a discussion of the Marcellus Shale, the deepest of the Devonian black shales in West Virginia. A chapter
on Upper Devonian fractured black and gray shales and siltstones addresses the more eastern and northern of the shales in the state. This publication is
available from the WVGES publications sales office (see Atlas of Major Appalachian Gas Plays for the publication description and click here for a PDF of the publication order form).
- Other presentations may be found on our Posters and Presentations at Scientific and other Meetings page.
◊ US DOE
- U.S. DOE Report (2013): Modern Shale Gas Development in the United States: An Update,
shale-gas-primer-update-2013.pdf (PDF, 12.59 MB).
- U.S. DOE Report (2010): Projecting the Economic Impact of Marcellus Shale Gas Development in West Virginia: A Preliminary Analysis Using Publicly Available Data, ALL-DOE_WV_MarcellusEconomics2010.pdf (PDF, 2.22 MB).
- A large body of literature was published in the 1970's and 1980's on research funded by the U.S. DOE and the Gas Research Institute (GRI) (now the Gas Technology Institute (GTI)).
Much of the emphasis in the earlier work was on the Lower Huron shale which is the primary productive zone in the historic productive area (e.g., the Big Sandy field of southwestern
West Virginia and eastern Kentucky). The US DOE literature has been scanned and is available on DVD; information on the DVD is available at http://www.netl.doe.gov/research/oil-and-gas/software/cd-ordering. The DVD is described below:
||Archive of Unconventional Gas Resources Program
A DVD archive of nearly two decades of pioneering research from the
Department of Energy's National Energy Technology Laboratory (DOE/NETL) is
now available. The archive includes nearly 1,500 valuable documents on 2 DVDs.
The first DVD contains reports and logs related to the Eastern Gas Shales
Program (1976-1992). A second DVD combines program information related to
Western Gas Sands (1977-1992), Methane Recovery from Coalbeds (1978-1982),
Methane Hydrates Program (1982-1992), Deep Source Gas Project (1982-1992),
and Secondary Gas Recovery (1987-1995). Both include a comprehensive summary
of the Unconventional Gas Resources Program and an extensive bibliography
dedicated to each of these programs. This data was originally published as
a 12 CD set but is now conveniently offered on a 2 DVD set.
- Assessment of Undiscovered Oil and Gas Resources of the Devonian Marcellus Shale of the Appalachian Basin Province, 2011, USGS Fact Sheet 2011-3092, 2p.,
Coleman, J.L., Milici, R.C., Cook, T.A., Charpentier, R.R., Kirschbaum, Mark, Klett, T.R., Pollastro, R.M., and Schenk, C.J. See:
- Petroleum Geology of the Devonian and Mississippian Black Shale of Eastern North America, USGS Bulletin 1909, J.B. Roen and R. C. Kepferle, editors.
- Thermal Maturity Patterns (CAI and %Ro) in the Ordovician and Devonian Rocks of the Appalachian Basin in West Virginia by J.E. Repetski, R.T. Ryder, K.L. Avary,
and M.H. Trippi (USGS Open-file Report 2005-1078: http://pubs.usgs.gov/of/2005/1078/)
- Assessment of Appalachian Basin Oil and Gas Resources: Devonian Shale—Middle and Upper Paleozoic Total Petroleum System by R.C. Milici and C.S.
Swezey (USGS Open-File Report 2006-1237:
◊ Petroleum Organizations and Other
The following are recent and various presentations online:
- Several Marcellus abstracts and presentations are listed and linked from the 2008 ES-AAPG Meeting:
- PTTC/PGS/PAPG Shale Geochemistry Seminar—Christopher D. Laughrey, Weatherford Laboratories:
- Ground Water Protection Council Presentation (2008): Hydraulic Fracturing Considerations for Natural Gas Wells of the Marcellus Shale,
GWPC_092008_Marcellus_Frac_Arthur_et_al.pdf (PDF, 717.71 KB), Authors: J. Daniel Arthur, P.E., ALL Consulting; Brian Bohm, P.G., ALL Consulting; Mark Layne,
Ph.D., P.E., ALL Consulting.
Page last revised: May 22, 2015
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