Southwest

In the Soutwest we gather, process, treat, fractionate and transport off-gas as well as natural gas and natural gas liquids in East Texas, Southeast Oklahoma, Western Oklahoma, Gulf Coast and several smaller systems in the Southwest.

East Texas

Our East Texas operations are located in Panola, Harrison, and Rusk Counties and serve the Carthage Field. The midstream system consists of low- and high-pressure natural gas gathering pipelines, centralized compressor stations, natural gas processing facilities, and an NGL pipeline.

Resource Plays

Cotton Valley, Travis Peak, and Pettit formations and Haynesville Shale

Gathering

640 MMcf/d gathering capacity

Processing

520 MMcf/d cryogenic processing capacity

Market Access

Gas: Interconnects to Enable Gas Transmission, LLC, Natural Gas Pipeline Company of America (NGPL), and TGT Pipeline

NGLs: Interconnects to West Texas Pipeline (WTPL) and Panola Pipeline

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Western Oklahoma

We own the Foss Lake natural gas gathering system and the Arapaho natural gas processing complex, all located in Roger Mills, Custer, and Ellis Counties of western Oklahoma. We also own the Grimes gathering system in Roger Mills and Beckham Counties in western Oklahoma and a gathering system in the Texas panhandle, both of which are connected to our Arapaho processing complex. In May 2013, we acquired gathering and processing assets located in Hemphill County, Texas and Washita County, Oklahoma.

Resource Plays

Anadarko Basin, which consists of the highly prolific Granite Wash and Hogshooter formations, Cana-Woodford, and multiple other attractive liquids-rich zones

Gathering

775 MMcf/d gathering capacity

Processing

435 MMcf/d cryogenic processing capacity

Market Access

Gas: Interconnects to ANR Pipeline System (ANR), Enable Gas Transmission, LLC, Natural Gas Pipeline Company of America (NGPL), and Panhandle Eastern Pipeline (PEPL)

NGLs: Interconnect to OneOK

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Southeast Oklahoma

We own a natural gas gathering system in the Woodford Shale in the Arkoma Basin of southeast Oklahoma. We have in excess of 160,000 dedicated acres in the Woodford Shale play and the Hartshorne coal bed methane play where we provide low pressure, highly reliable, and fuel efficient service.

Resource Play

Woodford Shale

Gathering

550 MMcf/d gathering capacity

Processing

100 MMcf/d of third-party, rich-gas processing capacity

104 MMcf/d of processing capacity through Centrahoma, a joint venture between MarkWest and Atlas Pipeline Partners, L.P.

Market Access

Gas: Interconnects to Enable Gas Transmission, LLC, Enable Midstream Partners, LP, Enogex, and Arkoma Connector Pipeline

Transportation

625 MMcf/d FERC-regulated Arkoma Connector Pipeline (joint venture with ArcLight Capital Partners). Interconnects to Midcontinent Express Pipeline (MEP) and Gulf Crossing Pipeline at Bennington, Oklahoma

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Other Southwest

We own a number of natural gas gathering systems and intrastate pipelines located throughout Texas, Louisiana, and New Mexico; including the Appleby gathering system in Nacogdoches County, Texas.  In many areas we are the primary gatherer, and in some of the areas served by our smaller systems we are the sole gatherer.

Resource Plays

Travis Peak, Rodessa, Frio, Ellenburger, and Canyon Sand formations, as well as Haynesville, Bossier Shales, and the Delaware Basin in the Permian

Gathering

150 MMcf/d gathering capacity

Market Access

Interconnects to multiple downstream pipelines, including Natural Gas Pipeline Company of America (NGPL)

Transportation

Three lateral natural gas pipelines in Texas with a combined capacity of approxmately 500 MMcf/d. One FERC-regulated, natural gas pipline in New Mexico with a capacity of approximately 300 MMcf/d.

Under Construction

200 MMcf/d cryogenic processing capacity at the Hidalgo Complex in Culberson County, Texas

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Gulf Coast

Gulf Coast consists of the Javelina gas processing and fractionation facility in Corpus Christi, Texas, which treats, processes, and fractionates off-gas from six local crude oil refineries.

Processing

142 MMcf/d cryogenic processing capacity

Fractionation

29,000 Bbl/d NGL fractionation capacity

Market Access

Gas: Interconnects to several local refineries

NGLs: Interconnects to various regional product pipelines

Other

NGL marketing and transportation, including ethane, ethylene, propane, propylene, isobutane, normal butane, butylenes, and pentanes

High-purity hydrogen production

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