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 H
Conneaut gas field (Kastle pool) [Cn(K)]
| Location: | Crawford County, Pennsylvania (Edinboro South and Meadville 7½ min. quads) |
| Discovery date: | 1962 |
| Depth (ft): | 3,950 |
| Hydrocarbon type and GOR: | Gas and associated oil (all wells produce some oil, as much as 50 BOPD) |
| Structural setting: | Regional southeast-dipping homocline with southest-plunging anticlinal noses |
| Stratigraphic name of reservoir: | Medina Group (Grimsby Formation and Whirlpool Sandstone); northeast-trending sandstone bodies subparallel to interpreted shoreline trend |
| Trap: | Stratigraphic; updip permeability barrier caused by shale-out of pay sand |
| Porosity: | F ave (log) (estimated) ~ 9%, range 5 to 18% |
| Permeability: | Kave = <0.05 mD, range 0.0093 to 0.13 mD |
| Natural fractures: | |
| Diagenetic features: | Reservoirs have < 10% clay and silica and (or) dolomitic cement |
| Water saturation and volume/salinity of produced water: | All wells produce some water; amount is unknown |
| Gas/water and oil/water contacts: | Not enough data to determine; segregation of fluids may occur in some of the larger water-bearing, porous Medina Group sandstones located in other fields to the northwest |
| Reservoir pressure: | 1,060 psi (0.25 psi/ft), range 635 to 1,280 psi |
| Bottom-hole temperature: | |
| Well spacing: | 80 to 320 acres; trend is toward 160 acres |
| Ultimate production (EUR per well): | |
| References: | Kelley (1966); Pennsylvania Oil and Gas Association—Gas Advocacy Committee (1980) |
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