** Shares of Australia's Bass Oil BAS.AX rise as much as 13.2% to A$0.06, their highest point since April 30
** Stock hits biggest intraday pct gain since May 5
** Diversified oil and gas co posts total sales revenue for April at A$1.35 million ($961,605.00), up 245% compared to March
** Says result due to the sale of accumulated Cooper Basin oil sales and persistently high oil prices
** YTD, stock up 16%
($1 = 1.4039 Australian dollars)
(Reporting by Aamir Sheik Khalid in Bengaluru)
((Aamir.SheikKhalid@thomsonreuters.com))