"We had raised that issue last year... some data on over-lapping has been exchanged but things have stopped and so we have appraised the ministry about the status," ONGC Director (Exploration) N K Verma told reporters here.
According to the report, ONGC says four wells drilled by RIL in the eastern offshore KG-D6 blocks are within "few hundred metres" of its gas field and it fears the two may be sharing the same pool of reservoir.
RIL's wells -- D6-A5, D6-A9 and D6-B8, ONGC feels may be drawing gas from its gas pools called G4-2, G4-3 and D-1, said the media report.
"As these pools are extending across both the blocks, there is possibility that pools of RIL and G4 are being drained through wells drilled in KG-D6," he said.
Verma said ONGC after studying data is confident that the two blocks have the same pool and as per established international practices the same should be apportioned between them.
"It (the issue) can be resolved... a third party international expert may be required to be appointed to study the data of the two fields," he said. ONGC says RIL is seeking additional data and clarification and "somehow not willing to accept that the fields overlap."
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