Nighthawk Energy said it has plugged and abandoned the Happy Jack 7-10 well in the Monarch joint development area.
The company said the well, which was spudded last month, was drilled to a total depth of 8,400 feet.
The well encountered oil shows in the Marmaton and Cherokee zones within the Pennsylvanian section.
Rose Petroleum has spudded the State 1-34 Mancos well in Utah.
The company said it had used a smaller rig for better cost efficiency and will bring in a larger rig in early January to drill the balance of the well to total depth.
Surface casing will be set to 300 feet and once the surface casing is cemented in place, drilling operations will recommence.