Unocal, ENI complete drilling Ranggas-5 well in E. Kalimantan

Unocal Corporation announced Saturday that its Unocal Rapak, Ltd. subsidiary had drilled the fifth successful well on the deepwater Ranggas oil field offshore East Kalimantan.

"We are excited by the results of the Ranggas-5 well because the well penetrated more net pay than any other well in Unocal Indonesia's long history," said Brian Marcotte, president of Unocal Indonesia Company in a statement. "Because of our successful appraisal drilling program, we have initiated engineering and development studies for the field."

The Ranggas-5 well encountered 203 feet (62 meters) of net oil pay and 618 feet (188 meters) of net gas pay. The well was drilled in 5,412 feet (1,650 meters) of water to a total vertical depth of 11,858 feet (3,614 meters). The well is located 1.5 miles (2.4 kilometers) north of the Ranggas-1 discovery well and 0.7 mile (1.1 kilometers) south of the Ranggas-4 well, which was recently tested at 8,158 barrels of oil and 6.4 million cubic feet of gas per day from a single interval.

Unocal Rapak is operator of the Rapak production sharing contract (PSC) area. It holds an 80 percent working interest, while Lasmo Rapak, Limited, a subsidiary of Italian oil, gas firm ENI S.p.A., the remaining 20 percent working interest. (robert)