Blow line & pit at VanWinkle Unit # 1 petroleum well (west of Granville, Ohio, USA) 2 : 無料・フリー素材/写真
Blow line & pit at VanWinkle Unit # 1 petroleum well (west of Granville, Ohio, USA) 2 / James St. John
| ライセンス | クリエイティブ・コモンズ 表示 2.1 |
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| 説明 | Actively drilling petroleum well in Licking County, Ohio, USA. (February 2018) (site access generously provided by Gary Sitler for geoscience education purposes)During the late 1800s, Ohio was the # 1 petroleum exporter on Earth. This is definitely not the case anymore! Despite this, Ohio today still has economic concentrations of oil and natural gas. Ohio has three significant petroleum occurrences:1) Trenton Limestone (upper Middle Ordovician) of northwestern Ohio. 2) Clinton Sandstone (Lower Silurian) of eastern Ohio. 3) Knox Group (Beekmantown Dolomite-Rose Run Sandstone-Copper Ridge/Trempealeau Dolomite) (Upper Cambrian to ?lowermost Ordovician) in the eastern ~half of Ohio. Of these three petroleum systems, the Knox Group generally requires the deepest drilling. Most Knox Group drilling in Ohio targets the Rose Run Sandstone, an interbedded quartzose sandstone-dolostone unit of Late Cambrian age.The well site shown above is being actively drilled (as of February 2018). It was targeting a paleotopographic high at the Knox Unconformity and hoping to encounter petroleum in porous dolostone.Shown here is the end of the blow line (a.k.a. "blooey line"). Drilling can be done dry ("dusting"), or using a surfactant ("soaping"). Other drilling conditions include "aerating" (drilling with a mix of air and water), fluid drilling (using water), and mud drilling (using a slurry of water and drilling mud). As the hole is drilled, rock chips and air/soap/fluid are continuously & forcefully spewed out from the well and directed down the blow line, where the material collects in a pit lined with a large impermeable tarp. The "islands" of material emerging from the water are piles of well cuttings (rock chips).Update: as of fall 2018, this well was producing petroleum from the Upper Trempealeau Dolomite (also known as the Copper Ridge Dolomite). Petroleum is coming from porous dolostones below the Knox Unconformity. The Knox is a megasequence boundary (Sloss sequence boundary) that separates the Sauk Megasequence below from the Tippecanoe Megasequence above.The following are formation picks for this well (the numbers are from the completion record filed with the Ohio Division of Natural Resources, Division of Oil and Gas Resources):375 feet depth = top of the Berea Sandstone (lowermost Devonian)1190 feet depth = top of the "Big Lime" (= Devonian and Silurian carbonate succession, including the Delaware Limestone, Columbus Limestone, and Silurian dolostones)1992 feet depth = top of the "Packer Shell" (= Middle Silurian Dayton Formation equivalent)3324 feet depth = Trenton Limestone (upper Middle Ordovician, sensu traditio; lower Upper Ordovician, sensu novo)3855 feet depth = Gull River Limestone (Middle Ordovician)3920 feet depth = Knox Unconformity with Trempealeau Dolomite below (Upper Cambrian)Locality: VanWinkle Unit # 1 well (permit # 34089261880000) (804' SL, 1794' EL, northeastern quarter of township), west of Granville, St. Albans Township, Licking County, Ohio, USA (40° 04' 55.13" North latitude, 82° 34' 38.00" West longitude)----------------------See info. at:en.wikipedia.org/wiki/Drilling_rigandgis.ohiodnr.gov/MapViewer/WellSummaryCard.asp?api=3408926... |
| 撮影日 | 2018-02-14 13:23:36 |
| 撮影者 | James St. John |
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