Pre-Qualification Criteria (PQC) for’ Supplying of Casing Crossover subs’
Procurement Of Casing Crossover Subs For Wells In KG-OSN-2001/3.
Broad Description of required Crossover: ONGC is planning to complete DDW-D6 & D7 well with a mono-bore completion. The production casing run will be a 9-7/8” casing 68.8 PPF, 8.5” special drift casing with TSH Blue Connection. A 5-7/8” Hole will be drilled below production casing shoe throughout the reservoir section containing gas deposits.
A Tapered Liner 7” X 5 ½” X 3 ½” will be run with liner hanged inside production casing using a 7” 10Kpsi Liner hanger & packer and will be cemented. Crossovers like 7”NSCC Q125 35PPF (Box) x 5-1/2”NSCC Q125 23 PPF (Pin) and 5-1/2”NSCC Q125 23 PPF (Box) x 3-1/2” VAM TOP T95 12.7PPF (Pin) are required in the form of threaded and coupled in order to connect the 7” Q125 35PPF NSCC casing with 3 ½” T95 12.7 PPF VAM TOP tubing.
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