Gujarat Energy Limited (Erstwhile Gujarat Gas Limited) invites online bids under a two-bid system for Tender ID 313396 involving the supply of casing and tubings for onshore oil and gas wells, alongside Tender ID 313521 for the sale of emulsified crude produced in Well:PK 1ST of Ingoli Field, Ahmedabad Block (CB-ONN-2000/1); complete tender documents and future corrigenda are accessible through nprocure.com and gujarat-energy.com.