Whiting Touts Flow Rates at Lewis & Clark Prospect

Williston Basin
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Whiting announced results on 11 recently completed Whiting-operated wells in North Dakota.

Lewis & Clark

In the Company's Pronghorn area of the Lewis & Clark prospect, Whiting completed the Smith 34-12TFH in the Sanish Sand formation flowing 2,446 barrels of oil and 2,959 Mcf of gas (2,939 BOE) per day on September 15, 2011. The well was tested on a 48/64-inch choke with a flowing casing pressure of 875 psi. The Smith well, which was drilled on the southeast side of the prospect in Stark County, North Dakota, was fracture stimulated in a total of 30 stages. The Smith 34-12TFH was drilled about a mile northwest of the Whiting-operated Hecker 21-18TFH, which posted the highest initial production rate for any Three Forks well drilled in the Williston Basin at 3,612 BOE per day. The Pronghorn area comprises 123,500 gross (114,700 net) acres, which is approximately 15% larger than the Company's Sanish field. Whiting holds a controlling interest in 75 1,280-acre spacing units at Pronghorn.

Also in the Pronghorn area, Whiting completed the Lydia 21-14TFH in the Sanish Sand with an initial production rate of 1,645 barrels of oil and 1,894 Mcf of gas (1,960 BOE) per day on September 3, 2011. The well was tested on a 48/64-inch choke with a flowing casing pressure of 600 psi. The Lydia well, which was drilled approximately five miles east-southeast of the Smith well, was fracture stimulated in a total of 30 stages.

James J. Volker, Whiting's Chairman and CEO, commented, "Our recent well results at Lewis & Clark demonstrate that we are generating some of the industry's best initial production rates from the Three Forks formation in the entire Williston Basin. We hold 1,102,302 gross and 680,137 net acres in the Bakken/Three Forks Hydrocarbon System that we believe will provide increased production and reserve additions for years to come.

"Our new prospect areas in the Williston Basin, such as Lewis & Clark (with its sub-prospect areas of Pronghorn, Big Stick, Elkhorn Ranch, Demores, Beaver Creek and O'Neil Creek), Hidden Bench, Cassandra, Missouri Breaks and Starbuck, cover 923,858 gross and 597,235 net acres providing the catalyst for our strategy of developing new oil play areas for future multi-rig development while successfully executing on our existing large scale resource play at Sanish field. Whiting remains confident in its previously released guidance for increasing production in the third quarter of 2011. Further, production from the wells reported in this release will be seen primarily in the fourth quarter of 2011."

Sanish Field

Highlighting drilling results at the Company's Sanish field in Mountrail County was the completion of the Hansen 14-20XH. This cross-unit well flowed 2,637 barrels of oil and 1,536 Mcf of gas (2,893 BOE) from the Middle Bakken on August 24, 2011. The well flowed on a 48/64-inch choke with a flowing casing pressure of 505 psi. The Hansen well was fracture stimulated in a total of 30 stages. The Hansen 14-20XH was drilled in the southeast portion of the Sanish field.

Also of note was the completion of the Brehm 12-7TFH. The well flowed 1,466 barrels of oil and 966 Mcf of gas (1,627) on completion in the Three Forks formation on September 15, 2011. This is Whiting's second highest initial production rate for a Three Forks well in the Sanish field. The highest Three Fork initial production rate was from the Whiting-operated TTT Ranch 4-6TFH, which flowed 1,768 BOE per day on August 16, 2010. The Brehm 12-7TFH was drilled on the southwest side of the Sanish field, approximately nine miles southwest of the TTT Ranch 4-6TFH.

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