Eclipse Resources Adds to Senior Management Team

               Eclipse Resources Adds to Senior Management Team

PR Newswire

STATE COLLEGE, Pa., Feb. 25, 2013

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

SOURCE Eclipse Resources Operating, LLC

Contact: Julia Williams, +1-814-308-9754,
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