File:Schematic cross-section of general types of oil and gas resources and the orientations of production wells used in hydraulic fracturing.jpg
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DescriptionSchematic cross-section of general types of oil and gas resources and the orientations of production wells used in hydraulic fracturing.jpg |
English: Shown are conceptual illustrations of types of oil and gas wells. A vertical well is producing from a conventional oil and gas deposit (right). In this case, a gray confining layer serves to “trap” oil (green) or gas (red). Also shown are wells producing from unconventional formations: a vertical coalbed methane well (second from right); a horizontal well producing from a shale formation (center); and a well producing from a tight sand formation (left). Note: Figure not to scale. Modified from USGS (2002) and Newell (2011). |
Date | |
Source | U.S. EPA. Assessment of the Potential Impacts of Hydraulic Fracturing for Oil and Gas on Drinking Water Resources (External Review Draft). U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-15/047, 2015. |
Author |
Unknown authorUnknown author US Government employee |
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Public domainPublic domainfalsefalse |
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current | 18:26, 4 June 2015 | 1,431 × 839 (151 KB) | Ain92 (talk | contribs) | higher quality | |
18:25, 4 June 2015 | 1,431 × 839 (113 KB) | Ain92 (talk | contribs) | User created page with UploadWizard |
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