An exciting time ahead for ONGCآ’s southern region

Vol 3, PW 23 (08 Dec 99) Exploration & Production

One area where ONGC faces few problems of reserve accretion is in the burgeoning oil and gas producing Krishna Godavari and Cauvery basins of Andhra Pradesh and Tamil Nadu.

So confident is ONGC of rising production here that its regional director CP Saha has ordered his reservoir engineers to re-evaluate the potential of all discovered fields under his control, with a view to increasing gas and oil production. This report learns Saha is encouraged by the pace of infrastructure development in the region carried out by Gas Authority of India (GAIL) and Engineers India (EIL) as they step up the construction of gas evacuation pipelines.

A reassessment of reservoirs will enable ONGC, for example, to advise GAIL on whether it should install 32-inch pipelines or 28-inch pipelines. At present ONGCs focus is on increasing production at the Kesanapalli onshore fields and the Mandapetta field, which is experiencing technical problems in draining oil.

ONGC officials are also talking with increasing confidence of enhancing production from the Kovilkalappal field in the Cauvery basin. At present Kovilkalappal is closed because of high amounts of H2S in the associated gas that is produced.

But ONGC has asked the Institute of Reservoir Studies (IRS) at Ahmedabad to re-evaluate the sands because it feels production can increase substantially. Recovery from the Kovilkalappal and nearby Narimanam fields have crossed 30% and reservoir engineers tell this report, the fields are behaving excellently.

All this is good news for local consumers. Petrowatch learns that GAIL has approached ONGC with a request to supply a new customer in the Ramnad district with 500,000 cubic metres a day (cm/d) of gas.