** Shares of Indian upstream oil companies ONGC ONGC.NS and Oil India OILI.NS rise 6.2% and 7.3%, respectively
** Oil prices rose 3% on Tuesday as winter storm disrupts U.S. crude output and exports O/R
** ONGC supported by JVs' shipbuilding contract with Samsung Heavy Industries for two Indian-flag ethane carriers
** Over 18 mln ONGC shares trade on the day, 2x the 30-day-avg vol; OILI trading volume around 10x 30-day-average
** ONGC up about 3% so far in Jan, while OILI gains around 6%
(Reporting by Surbhi Misra in Bengaluru)
((Surbhi.Misra@thomsonreuters.com | X: https://twitter.com/SurbhiMisra_ |;))