MUSCAT, June 29 (Reuters) - State-owned Petroleum Development Oman, the country's top oil and gas exploration and production company, has obtained a $4 billion loan from international banks to help finance construction of new facilities, it said on Wednesday.

The five-year loan, known as a pre-export facility, was priced at 160 basis points over the London interbank offered rate.

(Reporting by Fatma Alarimi; Writing by Andrew Torchia; Editing by Catherine Evans) ((andrew.torchia@thomsonreuters.com; +9715 6681 7277; Reuters Messaging: andrew.torchia.thomsonreuters.com@reuters.net))