As on 23rd December there is no opening with ONGC at Chennai, however you may follow the below process to check the new recruitment with ONGC at a later date:

Please visit the official site of ONGC which looks like the image



On the top right of the page you will find section for Careers please select.

A list of option will be visible please select Notices.

You will be directed to a new page like



Here on this page you will find the links to recruitment details with ONGC, please appropriately select the desired link to get more details.

Please follow the above process in future as well

Address:

ONGC India
Tel Bhavan,
Dehradun