Jeffrey P. Elrod
OXY USA Inc.
Each one of the five, three-stage, positive-displacement air boosters on the Pirkle 2 location was capable of 1,500 scfm of output capacity (Fig. 4).
In typical air drilling operations, the blooie line is flanged to a rotating head situated on an annular preventor and a two-ram BOP (Fig. 5).
Increased gas recoveries in depleted gas zones can be achieved through horizontal air drilling.
In December 1995, OXY USA Inc. drilled the Pirkle 2, the first air-drilled horizontal well in the Carthage field of Texas. Targeting the Cretaceous Frost "A" zone of the lower Pettit limestone at 6,000 ft true ve...