MarkWest Energy Partners LP, Denver, has begun operations at its 120-MMcfd Bluestone II cryogenic gas processing plant, its 20,000-b/d C2+ fractionator, and its 32-mile C2 pipeline connecting to Mariner West (OGJ Online, June 19, 2013).
The operations are part of the company’s Keystone assets and increase available processing capacity in the Marcellus in northwest Pennsylvania to 210 MMcfd.
The Bluestone II plant mainly takes rich-gas production of Rex Energy Corp., which now has 190 MMcfd of dedicated processing capacity at MarkWest’s Keystone facilities, consisting of 50 MMcfd of capacity at Bluestone I plant and 40 MMcfd of capacity at the Sarsen plant (OGJ, June 6, 2011, p. 88).