** Shares of SM Energy SM.N down 1.4% at $47.74 premarket
** Co to buy Uinta basin oil and gas assets from privately
held XCL Resources for about $2 bln
** SM says new assets will add 43,000 barrels of oil
equivalent per day in production and raise its core net acreage
by 14%
** Announces new share buyback plan of $500 mln
** Northern Oil and Gas NOG.N also to acquire some of
XCL's assets for $510 mln
** NOG shares marginally down at $38 premarket
** Up to last close, SM and NOG up 25% and 3.8%,
respectively, this year
(Reporting by Sourasis Bose in Bengaluru)
((Sourasis.bose@thomsonreuters.com))