NiSource Midstream Services (NMS), and MarkWest Liberty Midstream & Resources, L.L.C., jointly developed natural gas gathering, processing, and transmission projects in Majorsville, W.Va. The Majorsville processing complex is the first integrated gathering and processing system serving Marcellus production in southwest Pennsylvania and significantly augments the midstream infrastructure that NMS and MarkWest Liberty independently operate in southwest Pennsylvania. The gathering and processing facilities are fully contracted and will serve various producers, including affiliates of Chesapeake Energy Corporation, Chief Oil & Gas, CONSOL Energy/CNX Gas, Range Resources, and Statoil.
NMS re-functionalized pipeline and compression assets in West Virginia and Pennsylvania, including the re-commissioning of the Majorsville compressor station. These assets allow NMS to gather and deliver 88,000 dekatherms per day (Dth/d) of liquid-rich Marcellus gas production from Washington and Greene Counties in Pennsylvania and 250,000 Dth/d from Marshall, Wetzel, and Doddridge Counties in West Virginia to the MarkWest Liberty Majorsville processing plant. Residue gas from the processing plant is currently delivered into the NGT&S interstate pipeline system.
MarkWest Liberty operates a 120 million cubic feet per day (MMcf/d) cryogenic natural gas processing plant at the Majorsville processing complex and a 35-mile natural gas liquids (NGL) pipeline that connects the Majorsville complex to MarkWest Liberty’s midstream complex in Houston, Pa., where NGLs are fractionated, transported, stored, and marketed into high-value markets in the northeastern United States.
Majorsville processing complex was placed in-service in August of 2010.