GM(MM), In-charge Materials Management, Western Offshore Basin, Oil & Natural Gas Corporation Limited, Mumbai invites Open ICB e-tender under two bid system for Hiring of Specialized Services of Real time 24x7 Geomechanics and Drilling Optimization for three years through ONGC's e-procurement portal as per following details: Tender fee:- INR 45,000/-, to be paid through payment gateway provided in ONGC's e-procurement portal. Sale of tender document:- from 20/12/2013 to 09/01/2014. No pre-bid conference will be held. Tender closing/opening date & time:- 21/01/2014 at 1600 hrs / 1700 hrs respectively. Details of the NIT and link to ONGC's e-procurement portal are available at our website  http://tenders.ongc.co.in