Sarawak Operations or better known as SKO, is one of Carigali's three operation areas in Malaysia, others being Sabah Operations (SBO) and Peninsular Malaysia Operations (PMO) in Terengganu. It is one of Malaysia's oldest and most prolific oil-producing areas. SKO's office is located at the PCSB Building in Jalan Sekolah, Lutong, Miri. Other than the main office, it also has two supply bases, one in Labuan and another in Miri. The onshore facilities are the Miri Crude Oil Terminal in Lutong and the Bintulu Crude Oil Terminal in Bintulu.

Miri is located in the northern part of Sarawak near the Brunei border on Borneo island, with a total population of some 300,000 people. The major economic activities in Miri are logging for timber, support for the oil and gas industry, shipyards and tourism. The oil and gas activities are mainly centered in Lutong town, about 10km north of Miri where the PCSB SKO main offices are located.

On 31st October 1988, PETRONAS Carigali Sdn.Bhd. took over the operatorship of nine oil fields in the Baram Delta area located offshore Miri and the Miri Crude Oil Termainal (MCOT) from Sarawak Shell Berhad (SSB). The BDO PSC was signed on 24th March 1989 with the effective retroactive to 1st April 1988. The PSC expired on 31st March 2003 and had been renewed on 19th September 2003. PCSB SKO manages 20 PSCs before 1st April 2006 abd 8 PSCs after the Reorganization, out of which 4 are currently producing i.e. BDO (baram Delta Operations), Balingian, SK 307 and D35J4D21. SKO currently has a manpower strength of 1022 staff.