The 1 million-barrel cargo will set sail around July 4 on Greece-flagged tanker Militos for India's Paradip port, where it is set to arrive around August 8, according to Refinitiv data.
The company, along with subsidiary Chennai Petroleum , controls about a third of India's 5 million-barrels-per-day (bpd) refining capacity.
Still, a surge in crude prices boosted inventory gains and gross refined margins (GRMs) at IOC, helping it report a net profit of 87.81 billion Indian rupees ($1.20 billion) for the quarter ended March 31, against a loss of 51.85 billion rupees a year ago.
Along with expanding capacity, IOC will install catalytic dewaxing and polypropylene units at its Panipat refinery in northern Punjab state.
IOC said expansion of the refinery would raise production of petrochemicals and value-added specialty products to improve its margins and help "de-risk the conventional fuel business of the company".
While India cut back imports from Middle Eastern, African and US oil in December from the previous month, it marginally lifted its intake of Latin American and Caspian Sea oil.