MarkWest Energy Partners today announced a major expansion
infrastructure at its Keystone complex in Butler County,
Pennsylvania, to support growing rich-gas production from the
Marcellus Shale and Upper Devonian formations.
will be supported by new
agreements with Rex Energy and EdgeMarc Energy.
As part of these agreements, MarkWest will construct
Bluestone III and IV, both of which are 200 million cubic
feet per day (MMcf/d) plants that are expected to begin
operations during the fourth quarter of 2015 and the second
quarter of 2016, respectively.
In addition, MarkWest will construct 40,000 bpd of additional
de-ethanization capacity and over 20,000 bpd of additional
propane and heavier NGL fractionation capacity.
The Keystone complex 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 bpd of fractionation
The Keystone complex is anchored by Rex Energy and in May
2014, MarkWest began operations of the 120 MMcf/d Bluestone
II plant and 10,000 bpd each of ethane and propane plus
fractionation capacity to continue supporting Rex
Energys growing rich-gas production.
In addition to the new Bluestone processing and fractionation
plants, MarkWest completed a 32 mile purity ethane pipeline
connecting the Bluestone facility to Sunocos Mariner
West pipeline project
In conjunction with additional processing and fractionation
infrastructure, MarkWest says it is continuing to develop its
rich-gas gathering system throughout Butler County and
surrounding areas in order to support the growth of its
producer customers production.
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, said Frank Semple, CEO of
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," he added.