Over the last 10 years, operators searching for commercial reservoirs in the Rome Trough have been unsuccessful. The complex mineralogy of the Rome sand made completion-fluid design a challenge. Core analysis indicated that the formation was sensitive to conventional fluids, and high fracture treating pressures precluded stimulation with nitrogen foam. Consequently, engineers designed a carbon dioxide foam, which they pumped through 2 ⅞-in. J-55 tubing for fracture stimulation of the Rome interval. Treatment fluids cleaned up in 2 days and the well began producing 250 mcf/day. This unique treatment allowed operators to stimulate zones previously considered unsuitable for commercial production, and it generated additional drilling locations.

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