BUZZ-Encana Corp: Public offering of 107 mln shares
** Canadian oil and gas producer's U.S.-listed shares down 5.4 pct at $9.33 after market
** Announces offering of 107 mln shares, representing about 12.59 pct of total outstanding shares as of Aug. 21
** Expected to be priced later in the day; Offering likely to close on or about Sept. 23
** Says will use half of net proceeds to fund a part of its 2017 capital program and remaining to repay debt
** Up to Monday's close, stock had risen nearly 92 pct YTD
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