The deal gives the partnership leases on 18 pipelines. : (Bloomberg) -- KKR & Co. and BlackRock Inc. are seeking to raise a $3 billion loan to fund their purchase of a stake in Abu Dhabi National Oil Co.’s pipelines business, according to people with knowledge of the plan. The private equity firms’ special purpose vehicle has reached out to foreign banks for a 23-year facility, which would be one of the largest infrastructure financing deals in the Gulf this year, said the people, asking not to be identified because the information is private.