Eclipse Resources Adds to Senior Management Team

STATE COLLEGE, Pa., Feb. 25, 2013 /PRNewswire/ -- Eclipse Resources Operating, LLC ("Eclipse Resources") is pleased to announce the addition of Oleg Tolmachev to its management team in the role of Vice President, Drilling and Completions. Mr. Tolmachev joins Eclipse Resources with extensive oil and gas experience and most recently served as the Senior Asset Manager, Utica Shale with Chesapeake Energy Corporation where he was responsible in leading an asset team comprised of land, geology, drilling, resource development and operations for Chesapeake's Utica Shale projects in Ohio and Pennsylvania.

Prior to his employment at Chesapeake, Mr. Tolmachev held the position of Group Lead Completions, Mid-Continent Business Unit at EnCana Oil and Gas (USA) where he managed well completions and interventions operations in the company's Barnett Shale, Deep Bossier and Haynesville Shale business units.

Benjamin Hulburt, Eclipse Resources' President and CEO, commented, "We're very excited to add Oleg to the Eclipse Resources team. His intimate knowledge of the Utica Shale and experience with unconventional reservoir completions design will be extremely beneficial to Eclipse Resources, especially as we look to accelerate the drilling of the Utica, Marcellus and Geneseo Shales across our 60,000 gross acre leasehold position in southeast Ohio. Oleg is a proven leader having staffed, supervised and led operations teams at Chesapeake and EnCana."

Mr. Tolmachev received his Bachelor of Science in Petroleum Engineering from The University of Oklahoma. He is an active member in the Society of Petroleum Engineers and serves on the University of Oklahoma Department of Petroleum Engineering Industry Advisory Board.

About Eclipse Resources

Eclipse Resources is a State College, Pennsylvania based oil and gas company focused on the acquisition, exploration and development of unconventional oil and natural gas properties in the Appalachian Basin, including the Marcellus Shale, Utica Shale and Upper Devonian Shales. Founded in 2011 in partnership with EnCap Investments, Eclipse Resources follows the success of the management team's proven track record in building successful oil and gas enterprises. For more information, please visit www.eclipseresources.com.

SOURCE Eclipse Resources Operating, LLC