'Time to abandon rig categories' argue drillers Vol 20, PW 11 (23 Feb 17) Exploration & Production Calls are growing for ONGC to scrap its method of hiring rigs based on different categories and... Register here for subscription details Next Another set of bids for Reliance's R-Series bet Back Impatient drillers expecting ONGC jackup tender RelatedAccident-prone Chitra to mobilise on time (18 Apr 19) Most rigs with ONGC sit idle much of the time (20 Apr 17) 'Time to abandon rig categories' argue drillers (23 Feb 17) Jagson needs time to mobilise Deepsea Treasure (08 May 14) Unlucky PMT tries a fourth time to hire jack-up (07 Apr 11) ONGC plays for time on Reliance deepwater rig offer (09 Apr 09) Drillers line up for ONGC's new rig-hire procedure (20 Sep 07) ONGC readies for largest ever rig tender (15 Dec 05) Reliance insists it is paying contractors on time (04 Jun 03) IS THIS A GOOD TIME TO LAUNCH A ROUND' (03 Feb 99)