S&P BSE OIL and GAS Top Companies List by Market Cap as on Jan 7th, 2022

RELIANCE INDUSTRIES is a Multi-Sector company with spread of business in Retail, Telecom, PetroChemicals, Energy, Textiles, Natural Resources with head quarters is in Mumbai of India. Reliance Industries employee count is 195,618 as on 2020. Now Reliance Industries can also be considered as a Technology company, as it created wonders in Telecom sector of India and providing high speed mobile internet at cheap cost.

As on April 2020:

HPCL is Oil and Gas company with headquarters in Mumbai of India. ONGC own about 51% of shares of HPCL. HPCL today owns and operates two coastal refineries at Mumbai and Visakhapatnam with designed capacity of 7.5 MMTPA and 8.3 MMTPA respectively. Add to this a joint venture refinery at Mangalore, two cross-country pipelines and an extensive network of terminals, depots, bottling plants and aviation servicing facilities.

Petronet LNG Limited, one of the fastest growing world-class companies in the Indian energy sector, has set up the country's first LNG receiving and regasification terminal at Dahej, Gujarat, and another terminal at Kochi, Kerala. While the Dahej terminal has a nominal capacity of 15 MMTPA, which is being expanded to 17.5 MMTPA, the Kochi terminal has a capacity of 5 MMTPA. The company is also exploring suitable opportunities within and outside India to expand its business presence. Headquarters in New Delhi, India.

Natural gas distribution company with headquarters in New Delhi, India.

Gujarat State Petronet is the potential of renewable sources of energy as well natural gas transmission company by pipeline. The headquarters is in India.

Castrol India is an automotive and Liquid Engineering company focused on high performance oils, lubricants, fluids and greases for every application. The company annual revenue is 41,921 million INR and annual net income is 7,581 million INR for year ending March-2021. The headquarters is in India.