Characteristics of discrete and basin-centered parts of the Lower Silurian regional oil and gas accumulation, Appalachian basin: Preliminary results from a data set of 25 oil and gas fields
U.S. Geological Survey Open-File Report 98-216
Appendix K
East Canton/Magnolia oil field (EC/Mg)
| Location: | Stark (Osnaberg and Sandy Twps.) and Carroll (Rose Twp.) Counties, Ohio |
| Discovery date: | 1966 |
| Depth (ft): | 4,900 to 5,100 |
| Hydrocarbon type and GOR: | Oil and associated gas; GOR = 400 |
| Structural setting: | East-southeast dipping homocline |
| Stratigraphic name of reservoir: | "Clinton" sands |
| Trap: | Stratigraphic with little or no structural control; influenced by local structures and fractures; no recognizable updip pinchout of sandstone reservoirs but the net thickness of the reservoir interval decreases updip |
| Porosity: | F ave (log) = 7 to 8%; F ave = 5%, range 1 to 11%; range 5 to 12% also reported; best matrix porosity is in the Clinton red sand |
| Permeability: | Kave < 0.1 mD, range < 0.01 to 0.6 mD; local zones having K = 20 mD or greater; good fracture permeability in the Clinton red sand, lower permeability in the Clinton white sand |
| Natural fractures: | Reported in core; good fracture permeability in the Clinton red sand |
| Diagenetic features: | Silica cement |
| Water saturation and volume/salinity of produced water: | Sw (ave) = 35%, range 26.5 to 96.2%; not much water is produced—most wells produce salt water from several gallons/day to several barrels/day; salinity(ave) = 250,885 ppm, range 232,905 to 280,620 ppm, sample number = 10, salinity of 125,000 ppm and ~240,000 ppm also reported |
| Gas/water and oil/water contacts: | None reported; most water produced in the field comes from the structurally highest parts |
| Reservoir pressure: | 1,596 psi (0.32 psi/ft); 1,500 psi also reported |
| Bottom-hole temperature: | 104° F; T(ave) = 94°F, sample number = 7, also reported |
| Well spacing: | 40 acres; locally 10 acres |
| Ultimate production (EUR per well): | EUR per well (for 1 well) = 81,500 MMBO; EUR per well (for casinghead gas) ~150 MMCF of gas, ~6 MMCF of gas/year for first several years then increases to ~13 MMCF of gas/year in sixth year; Ultimate oil production for field = 200 MMBO |
| References: | Fenstermacher (1969); Locke (1967); McCormac and others, 1996; Oil and Gas Journal (1968); Persons (1970); Sanders (1991); Schrider and others (1969); Sitler, (1969); Thomas(1993); Watts and others (1971) |
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