HOUSTON, Aug. 3, 2011 /PRNewswire via COMTEX/ -- Petrohawk Energy Corporation ("Petrohawk" or the "Company") today announced its second quarter 2011 operational and financial results, including significant growth in production, revenues, and cash flows.

During the second quarter, Petrohawk spent approximately $621 million on drilling and completions, $239 million on leasehold acquisitions, primarily in the Permian region, and $77 million on gathering and treating infrastructure, primarily in the Eagle Ford Shale. At June 30, the Company's revolving credit facility had an outstanding balance of approximately $559 million.

On July 1, Petrohawk completed the sale of its remaining interest in KinderHawk Field Services LLC and a 25% interest in EagleHawk Field Services LLC to affiliates of Kinder Morgan Energy Partners, L.P. This transaction netted pre-tax proceeds of approximately $836 million, which were used to pay down the Company's revolving credit facility and as working capital for general corporate purposes.

Haynesville Shale

During the quarter, the Company averaged 11 operated rigs and drilled 21 operated wells, with net production in the field averaging 684 Mmcfe/d. Sixty-seven non-operated Haynesville Shale wells and 3 Bossier Shale wells were drilled during the quarter. Non-operated activity exceeded expectations during the quarter, in terms of both activity level and capital expenditures, primarily due to the transition to full section development by some operators during the quarter. Petrohawk expects that lower rig counts publicly announced by many industry partners point to lower activity levels in the Haynesville Shale during the second half of the year. Petrohawk is currently operating six rigs and has two dedicated frac fleets in the Haynesville Shale.

The Company achieved an overall cost reduction trend in Haynesville Shale completions during the quarter. Savings of approximately $600,000 to $800,000 per well were accomplished largely as a result of changes in well design that require two fewer frac stages per well, lower overall sand requirements per well, and improved pricing for resin coated sand. During the quarter Petrohawk averaged slightly less than 45 days spud to spud, more than 5 fewer days than during the preceding quarter. Significant additional improvements are expected as the Company moves toward pad drilling and full section development toward the end of 2012.

Improvements in water handling and usage have contributed to more flexibility in water sourcing in the Haynesville Shale. Approximately half of all Petrohawk-operated wells in field have been completed with 20% recycled water. Year to date, the Company has pumped approximately over 2 million gallons of recycled waste water on well completions in the Haynesville Shale.

Eagle Ford Shale

The Black Hawk area (DeWitt County, Texas) continues to produce excellent results. A majority of Petrohawk-operated wells were produced on a constrained basis due to transportation infrastructure limitations. During the quarter, Petrohawk averaged nine operated rigs in the Black Hawk area, with 25 operated and one non-operated wells drilled. Net production from Black Hawk averaged 73 Mmcfe/d, comprised of 22% natural gas, 62% condensate and 16% natural gas liquids. Transportation infrastructure issues for the Company are moderating in the area with the addition of a dedicated truck fleet. Modifications to facilities at the Company's Point Comfort barge facility are nearly complete and the facility is expected to begin operating during the third quarter.

In Hawkville Field (LaSalle and McMullen Counties, Texas), Petrohawk averaged five operated rigs and drilled 15 operated wells and two non-operated wells during the quarter. Net production in the field averaged 129 Mmcfe/d, comprised of 67% natural gas, 14% condensate and 20% natural gas liquids. Well performance in Hawkville Field has continued to improve as a result of the expanded implementation of HiWAY frac technology, deployed by two dedicated Schlumberger hydraulic fracturing fleets. Petrohawk and Schlumberger are experimenting with variations in the HiWAY design, including higher sand volumes and fiber concentrations, in an attempt to optimize well performance for each area of the Eagle Ford trend. In addition, the Company is testing new frac designs in both the Hawkville Field and Black Hawk area with its Halliburton dedicated hydraulic fracturing fleet.

Results in the Red Hawk prospect in Zavala County, Texas, failed to meet minimum expectations during the quarter. As a result, capital spending at Red Hawk will be terminated and capital budgeted for 2011 will be reallocated to other operating areas.

Permian Region

Petrohawk is currently operating four rigs in the Permian region, all concentrated in the Delaware Basin where the majority of the Company's leasehold is located. An initial vertical well in Culberson County, Texas tested approximately 1.0 Mmcf/d of 1250 BTU gas from the Wolfcamp formation. Total depth was reached on the Company's first horizontal Bone Springs well in Reeves County, Texas. A completion date for this well has been set for early August. A commingled Wolfcamp and Bone Springs vertical completion in Reeves County is planned with a completion date expected in mid-August. The Company is also currently drilling the lateral portion of its first horizontal Wolfcamp well in Culberson County with a planned completion date of mid-August. In addition, the Company is undertaking necessary infrastructure construction in order to market all products with minimum delays as wells come online.

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