HOUSTON (ICIS)--MarkWest has resumed operations at "Plant III" of its Houston fractionation complex in Washington County, Pennsylvania, the US-based midstream energy firm said in an operational update issued late Tuesday.
The 200m cubic feet/day cryogenic facility had been offline since 28 May after a heat exchanger was damaged.
During the outage of Plant III, MarkWest was able to minimise disruption to customers by routing gas to the Majorsville complex in Marshall County, West Virginia for processing.
MarkWest’s Houston complex consists of three plants totaling 355m cubic feet/day of gas processing capacity and 98,000 bbl/day of ethane fractionation capacity.
MarkWest also said that in the Utica shale, its MarkWest Utica EMG joint venture with The Energy and Minerals Group, has a third cryogenic processing plant "in start-up mode" at Seneca in Noble County, Ohio. The 200m cubic feet/day Seneca III plant will increase total processing capacity at the complex to 600m cubic feet/day.
Furthermore, MarkWest Utica EMG's Cadiz complex in Harrison County, Ohio, recently completed a new 40,000 bbl/day de-ethanisation facility, MarkWest added. Ethane produced at the new Cadiz facility will be delivered to the ATEX pipeline.
MarkWest has has been among the most aggressive companies expanding processing and fractionation capacity in the Marcellus and Utica in the northeast US.
The company has completed 25 energy infrastructure projects in the last two years, totaling over 3bn cubic feet/day of processing capacity and nearly 200,000 bbl/day of fractionation capacity, to support gas producers' midstream requirements, primarily in the Marcellus and Utica shales.
In the remaining six months of 2014, MarkWest expects to complete five additional projects in the US northeast, and it is constructing eight additional projects that are scheduled to begin operations in 2015 and beyond, the company said.
Additional reporting by Al Greenwood.