** Shares of Grand Gulf Energy GGE.AX rise as much as
62.5% to A$0.013, their highest since June 26
** Stock posts its biggest intraday percentage gain since
Nov 22
** Helium explorer reports positive test results from its
Red Helium project in Utah
** Says it has found gas flowing free to the surface with
high helium concentrations from preliminary swabbing at project
** Adds result indicates an enhanced ability of the
reservoir to flow helium gas to surface
** About 31.4 mln shares change hands, compared with the
30-day average volume of 2.8 mln
** Stock down 57.9% YTD, based on last close
(Reporting by Aaditya Govind Rao in Bengaluru)
((Aaditya.govindrao@thomsonreuters.com;))