Nigeria’s State-owned oil company said it’s in talks with financiers to raise as much as $4.1-billion and will seek to sign service deals to increase production from three leases. The Nigerian National Petroleum Corporation, or NNPC, is in discussions with Lagos-based Sterling Oil Exploration & Energy Production to raise $3.15-billion and CMES-OMS Joint Venture for $991.1-million, the company said in a statement. The funds will be used to develop oil leases holding more than 400-million barrels of crude reserves, which are operated by the NNPC’s Nigerian Petroleum Development unit, it said.