MarkWest Keystone Gas Processing Center

Summary Information

• Ownership: Markwest
• Website: http://www.markwest.com/
• Location: Butler County, Pennsylvania
• Capacity: 210 MMcf/d

+++ Brief Description

• The centre consists of three cryogenic gas processing plants;
  • Bluestone I with 50 MMcf/d of capacity
  • Sarsen with 40 MMcf/d of capacity
  • Bluestone II with 120 MMcf/d of capacity
• In addition there are 20,000 barrels per day of ethane and heavier fractionation capacity
• Gas can be supplied to the Columbia Gas Transmission Corporation or Texas Eastern Transmission Gas Pipeline
• Ethane is supplied to the Mariner West NGL Pipeline

++++ Related Oil and Gas Fields

• Gas is supplied from the Marcellus Shale Gas Fields

+++ Ongoing Projects

• -

+++ Other Information

• -

+++ History

• 2012 - Markwest acquired the plant from Rex Energy
• 2014 - Bluestone II came onstream

+++ Relevant Links

1. Markwest Operations Marcellus
2. Rex Energy Corporation Announces Sale of Midstream Assets and Increase in Borrowing Base
3. Enterprise Products Begins Line-Filling ATEX Express Pipeline
4. MarkWest Energy Partners Announces Commencement of Additional Processing and Fractionation Infrastructure in Butler County, PA