NEW DELHI, Dec 20 (Reuters) -
* State refiner Bharat Petroleum Corp has written to the oil ministry for integration with GAIL (India) Ltd and Oil India Ltd as option 1 and 2, said oil minister Dharmendra Pradhan on Wednesday.
* The government has not taken any decision in this regard, Pradhan told lawmakers in a written reply.
* India wants to build bigger oil companies to better compete with global oil giants and withstand oil price volatility through integration of state-run oil firms.
* The government has approved sale of its 51.1 percent stake in refiner Hindustan Petroleum Corp to oil producer Oil and Natural Gas Corp. (Reporting by Nidhi Verma)