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Marcellus and Utica Shales Data
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An outcrop of the Marcellus Shale.
Source: Wikipedia; user: Lvklock (2008).
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Resource estimates indicate the Devonian-age Marcellus Shale is the largest exploration play in the eastern United States. Recently, the application of horizontal drilling combined with multistaged hydraulic fracturing to create permeable flow paths from wellbores into shale units has resulted in a drilling boom for the Marcellus in the Appalachian Basin states of Pennsylvania, West Virginia, southern New York, and eastern Ohio. This proven technology also may have application in other shale units, such as the Ordovician-age Utica Shale, which extends across much of the Appalachian Basin region. While limited production has occurred in the Utica up to this point, thickness and widespread geographical extent indicate it may also have great oil-and-gas potential.
In response to increased demand for data on these shales, the ODNR Division of Geological Survey has compiled a series of documents and data sets for both rock units. Published diagrams, isopach (thickness) maps, cross sections, and location maps for Marcellus and Utica producing wells are among the numerous documents and links provided on this page, which is updated periodically as new information and data becomes available. For an introduction to these two plays and their potentials for producing oil and gas in Ohio, see PDF slide show below.
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Marcellus Shale Files for Download
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Utica Shale Files for Download
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Additional Resources
- Class II Brine Injection Wells of Ohio. [324 KB PDF] Updated 05/03/2013
- Digital Geophysical Logs: Access spreadsheets of available digital logs here.
- Ohio Geological Survey Digital Data File 6: The Ohio Compilation of Devonian Shale Data and Investigations (2007).
- ODNR Division of Oil and Gas Resources Management - Shale Development
- Thermal Maturation and Petroleum Generation in source rocks, Pennsylvania Geological Survey.
- A Geologic Play Book for Trenton-Black River Appalachian Basin Exploration (2006), CD-ROM available for free from the U.S. Department of Energy.
- Marcellus Shale Play: Boon or Burden? Penn State University, Earth and Environmental Systems Institute Spring 2009 EarthTalks – Marcellus Shale Series.
- Black Shale Source Rocks and Oil Generation in the Cambrian and Ordovician of the Central Appalachian Basin, USA, by R. T. Ryder, R. C. Burruss, and J. R. Hatch, AAPG Bulletin, v. 82, no. 3, p. 412–441, 1998. (Click here for abstract.)
- Update on Regional Assessment of Gas Potential in the Devonian Marcellus and Ordovician Utica Shales of New York, presentation by R. Nyahay, J. Leone, L. B. Smith, J. P. Martin, and D. J. Jarvie.
- Marcellus & Utica Shale Research in Pennsylvania, Pennsylvania Geological Survey.
- Horizontal drilling/fracturing process for shale, Marcellus Shale Coalition (video).
- Special Report: The Great Shale Gas Rush, National Geographic.
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Disclaimer: The information contained herein has not been technically reviewed for accuracy and conformity with present ODNR Division of Geological Survey standards for published or open-file materials. The ODNR Division of Geological Survey does not guarantee this information to be free from errors, omissions, or inaccuracies and disclaims any responsibility or liability for interpretations or decisions based thereon.
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