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  • Gathering in the Marcellus


    The Liberty Resources division of Mark West is the largest processor of natural gas in the Marcellus shale. With facilities throughout the region, the company provides fully integrated natural gas midstream and processing services in the liquids-rich areas of Southwest Pennsylvania and Northern West Virginia.

    With 355 MMcf daily gathering capacity, Mark West relies on a variety of Ariel compressors to gather and transport gas throughout its Southwestern Pennsylvania operations. One of these operations includes the Houston Redd station, a newer transfer stations within the Liberty Resource division.

    "Here we are running JGK’s, we have two on site and we run them up to 120 lbs. suction and move around 20 million out of here. We drive these with 7042 Waukesha engines", says Brandon Belford, Lead Mechanic.

    After being produced from nearby wells, the wet natural gas is sent to one of several Mark West transfer stations. There, the gas is compressed and sent north towards the Houston Processing facility, where the valuable liquid hydrocarbons are separated out before transporting the gas through a larger pipeline for other uses.

    As the largest processor of natural gas in the region, Mark West cannot afford major compressor downtime due to unscheduled maintenance or service. So, they rely on their Ariel distributor to maintain an inventory of spare parts – reducing ordering and shipment times, and maximizing compressor performance.

    “We only use Genuine Ariel parts – it’s a good product and we want to keep it that way, keep our downtime at minimal. Since we really don’t have issues, we want to keep it that way” says Jeff Siler, Field Mechanic.

    “Our parts come from one of our distributors. We have a supplied set of parts. We run anything from packings, to rods, to pistons, to rider bands, to lubricator pumps. We have our own inventory warehouse that we keep everything within our own Oracle system from which we charge parts out, and if we need anything from time to time, we’ll call that supplier and they’ll ship parts out to us”, said Belford.

    It appears that Ariel has been a good choice for Mark West. “Over the past eight years that I’ve worked in the gas field, I’ve worked on numerous brands of compressors. By far, Ariel - between design, engineering and ease of maintenance, is the best,” said Patrick Wilson, Field Mechanic.

    At A Glance

    Mark West Hydrocarbon

    Washington, Pennslyvania, USA

    Year of Startup:

    Natural Gas

    Gas Gathering

    Unit Description:
    Ariel JGK/4


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