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Track Drilling (Rigs by operator) | Completions (Frac Spreads)

One-Page Deal Sheet

Keystone Midstream Acquired by Markwest Energy Partners

Markwest Energy Partners, L.P. Keystone Midstream Services
AnnouncedMay 31, 2012
TypeCorporate
LocationMarcellus Shale,Utica Shale
Announced Date
May 31,2012
Close Date
May 29,2012
Transaction Type
Corporate
Enterprise Value (EV)($MM)
512




Snapshot
Asset/Basin:
{"Marcellus Shale"}
TargetZones:
{"Marcellus Shale","
Location
Region
Northeast

Country
United States

State
Pennsylvania

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Transaction Details:  Subscribe to see

MarkWest Energy Partners, L.P. (MWE) (MarkWest) (NYSE: MWE) announced that it is acquiring 100% of the ownership interests of Keystone Midstream Services, LLC (Keystone), for consideration of $512 million. The transaction is expected to close during the second quarter of 2012.
Keystone is owned by Stonehenge Energy Resources, LP, and affiliates of Rex Energy Corporation (Rex Energy) (NASDAQ: REXX) and Sumitomo Corporation (Sumitomo). Keystones existing assets are located in Butler County, Pennsylvania and include two cryogenic gas processing plants totaling 90 million cubic feet per day…



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Price History



Date Deal Headline Price$/acre
Feb-02-2026 Devon Acquires Coterra Energy; Bulk Up on Permian, Adds Gas Bank - -
Dec-08-2025 Antero Resources Acquires HG Energy II for $3.9B - -
Apr-22-2025 EQT Acquires Olympus Energy Assets For $1.8 Billion - -