BUZZ-EnQuest: debt relief

** London-listed oil and gas producer's shares soaras much as 54 pct after lenders relaxed covenants until mid-2017

** Co renegotiated credit facilities and cut capex, butstill expects production in 2015 to improve as output from twokey assets ramps up

** "It looks like Enquest has taken serious actions to dealwith the lower oil price environment," Swedbank analysts said ina note

** Stock jumps most ever in a single day and was the biggestboost to the FTSE Small Cap index

** Co has access to $1.2 bln in credit facilities plus a$500 mln accordion facility (abhiram.nandakumar.thomsonreuters.com@reuters.net)

Enquest