Oil and Natural Gas Corporation Limited (NSEI:ONGC) is offering a stake to global oil companies to help develop challenging fields off the country's east coast, according to a tender document. The company did not say how big a stake it was offering to a potential partner. ONGC is hoping to lure interest from global companies with the "requisite technical expertise and financial strength" to support it in developing its Deen Dayal West field in the Bay of Bengal and ultra-deep discoveries in Krishna Godavari Basin.

The deadline for submitting expressions of interest is June 16, ONGC said in a tender document on its website.