ONGC rig tender extension Vol 14, PW 1 (01 Jul 10) News in Brief Essar Oilfields and Transocean have extended till July 31 the validity of their price bids in ONGC's tender to hire a deepwater semi-submersible for three years from December.... Buy this article forRs590 $9 For a 30-article or annual subscription rates click here RelatedAnother 5-onland rig tender from Oil India (01 Jun 23) ONGC extends rig bid deadline (23 Mar 23) Oil India stretches 5-rig deadline (18 Nov 21) Valiant damage forces ONGC rig tender delay (15 Jul 21) Deep set to win ONGC rig extension in Tripura (19 Sep 19) Norscot allows Wildcat to prepare for ONGC job (12 Jan 17) Confusion in BG jack-up tender for Tapti (05 May 16) Jagson and ABG sweet talk ONGC in 10-rig tender (18 Apr 13) Another extension for ONGC’s seven-rig tender (21 Apr 04) ONGC and Cairn postpone closing dates for rig tender (25 Sep 02)