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 X
Sharon Deep gas field (SD)
| Location: | Mercer County, Pennsylvania (Sharpsville and Sharon East 7½ min. quads) and Trumbull County, Ohio (Brookfield and Hartford Twps.) |
| Discovery date: | 1978 |
| Depth (ft): | 4,800 to 5,100 |
| Hydrocarbon type and GOR: | Gas and local associated oil |
| Structural setting: | Regional southeast-dipping homocline |
| Stratigraphic name of reservoir: | Medina Group (Grimsby Formation and Whirlpool Sandstone) |
| Trap: | Probable water-block mechanism; no updip pinchout of sandstone reservoirs |
| Porosity: | F = 6.8% |
| Permeability: | Kave = 0.0275 mD |
| Natural fractures: | |
| Diagenetic features: | |
| Water saturation and volume/salinity of produced water: | Reservoir: little to no water produced, log
resistivity > 80 ohm-meters Trap: high salt water saturation, shows of gas and oil commingled with salt water, log resistivity < 80 ohm-meters Salinity(ave) = 291,408 ppm, range 249,835 to 326,909 ppm, sample number = 6 |
| Gas/water and oil/water contacts: | None; transitional zone of high water saturation in gas phase downdip of water |
| Reservoir pressure: | 1,310 psi (0.26 psi/ft) |
| Bottom-hole temperature: | 120°F |
| Well spacing: | 40 acres |
| Ultimate production (EUR per well): | |
| References: | Dresel (1985); Laughrey (1984); Keighin and Hettinger (1997); Pees (1983a,b); Pennsylvania Oil and Gas Association—Gas Advocacy Committee (1980); Piotrowski (1981); Sanders (1991); Suphasin (1979); Zagorski (1991) |
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