In an agreement with Rex Energy and EdgeMarc Energy, MarkWest Energy Partners LP will be expanding midstream infrastructure at its Keystone complex in Western Pennsylvania to support growing shale gas production, MarkWest announced Aug. 26.
The Keystone complex, located in Butler County, Pennsylvania, currently consists of the Bluestone processing and fractionation complex and the Sarsen processing facility which combined currently provide 210 MMcf/d of processing capacity and 26,500 Bbl/d of fractionation capacity.
As part of the latest agreements, MarkWest will construct Bluestone III and IV, both of which are 200 million cubic feet per day plants that are expected to begin operations during the fourth quarter of 2015 and the second quarter of 2016, respectively. The expansion will support production from the Marcellus Shale and Upper Devonian formations.
“Our expansion of the Keystone complex is very strategic to producer activity in Beaver, Butler and surrounding counties and we are very excited to continue building our strong relationship with Rex and begin supporting EdgeMarc,” Frank Semple, MarkWest chairman, president and CEO, said in a statement. “Since our acquisition of the Keystone assets over two years ago, volumes continue to increase significantly and we are leading the development of full-service midstream services in the highly prospective rich-gas areas of the northwest Marcellus.”
In addition, the Partnership will construct 40,000 barrels per day of additional de-ethanization capacity and over 20,000 barrels per day of additional propane and heavier NGL fractionation capacity.
MarkWest is the largest processor of natural gas in Marcellus, with fully integrated processing, fractionation, storage and marketing operations in Southwest and Northwest Pennsylvania and Northern West Virginia.