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Marcellus Play Operations
The Devonian-aged Marcellus Shale runs about 600 miles across Pennsylvania. Southwestern began leasing in northeastern Pennsylvania in 2007 and at December 31, 2016, had 245,805 net acres in Pennsylvania. Southwestern’s undeveloped acreage was obtained at an average cost of approximately $1,127 per acre. 

As of December 31, 2016, Southwestern had spud or acquired 568 operated wells, 447 of which were on production and 536 of which are horizontal wells. Of the 447 operated horizontal wells on production, 281 were located in Susquehanna County, 140 were located in Bradford County, 25 were located in Lycoming county and one was located in Wyoming County. In 2016, Southwestern invested approximately $204 million in Northeast Appalachia to spud 32 operated horizontal wells, complete 33 wells and place 24 wells to sales. In 2016, Southwestern’s operated horizontal wells had an average completed well cost of $5.3 million per well and an average horizontal lateral length of  6,142 feet.

Last Updated on 04/05/2017

245,805 net acres (12/31/2016)
2016 Reserves:
1,574 Bcf (30% of total)
2016 Production:
350 Bcf (40% of total)
Geologic profile:
A Devonian-age black shale approximately 600 miles in length