** Shares of Otto Energy Ltd OEL.AX jump as much as 8.3%
to A$0.013, posting their biggest intraday pct gain since Feb 9
** Oil explorer says HY NPAT up 7% to $11.9 mln
** Says HY revenue up 18% to $21.4 mln
** Says on track to meet its full-year production and cost
guidance
** Shares touch their highest since March 7
** About 5.7 mln shares change hands vs the 30-day average
of about 2 mln shares
** Stock had fallen 7.7% this year, as of last close
(Reporting by Echha Jain in Bengaluru)
((Echha.jain@thomsonreuters.com))