Petrochemicals major in talks with rubber producer from Europe, two Western technology providers.
The HPL board had reinstated its CDR committee to woo lenders.
Cites legal battle among latter's promoters as reason for staying away from cash-strapped venture.
IndianOil already has a 8.89 per cent stake in HPL by virtue of a Rs 150-crore (Rs 1.5-billion) investment made in 2004.
Executives from private companies such as Shell and Blackstone are likely to be invited for interviews for the post of chairman and managing director of state-run Oil and Natural Gas Corporation.
The West Bengal government on Thursday refuted the allegations of The Chatterjee Group and told the Company Law Board there was nothing illegal in 15.5 crores additional shares of Haldia Petrochemicals Ltd.
The legal battle for control of Haldia Petrochemicals Ltd took a new twist on Wednesday when The Chatterjee Group contended before the Company Law Board that 15.5 crore (Rs 155 million) shares of the company were unaccounted for.
The maiden public offer of Haldia Petrochemicals Ltd would hit the capital market in the third quarter of the current financial year.
Nandigram, 126 km south of Kolkata, is Suvendu Adhikari's bastion, where he has vowed to defeat Mamata Banerjee by 50,000 votes or quit politics.
RIL had objected to the state government's decision to receive bids in sealed envelopes instead of an open auction.
Bankers of HPL too have endorsed the idea and are pitching hard for the chairmanship of Chatterjee.
Three PSUs, three private firms join bid to acquire 40% stake in Haldia Petrochem.