Under the deal, the pipeline company will lease ADNOC's interest in 18 pipelines transporting crude oil and condensates across ADNOC's upstream concessions for 23 years.

KKR and BlackRock's investment, which was first announced in February, was funded through their infrastructure funds and financed by a syndicate of banks, ADNOC said in a statement.

(Reporting by Asma Alsharif; Writing by Davide Barbuscia; Editing by Edmund Blair)

Stocks treated in this article : BlackRock Inc., KKR & Co Inc