Two recent noteworthy examples include the successful development of Enfield South, extending the field to the southwest, and the Robert Vickery new discovery, NE SE Section 32, T4S, R3E, in south central Jefferson County. The Vickery well lies between Ewing and Ina Fields. Development continues at Enfield South in sections 12 and 13, T6S, R7E, Hamilton County with the drilling of over 11 wells. The application of 3-D seismic may prove to be a key element to the successful development of this field. Conventional 2-D seismic was employed in the Vickery discovery.
Plans are underway to offset the discovery.
The most prolific production is found where these stacked, porous lenses develop in the uppermost Warsaw and attain a net thickness of 40 feet or more. Individual, porous, grainstone beds appear to be less than 10 feet thick and are interbedded with and laterally interfinger with dense lime mudstones. Compartmentalization may be a common characteristic of the Warsaw fields and may be a hindrance for secondary recovery. Although waterflood data for this horizon is scarce, pressure and production data suggest communication occurs between these lenses. Fracturing or possibly coalescing of lenses would explain this communication.