SK 309 & SK 311 is a producing conventional gas field located in shallow water in Malaysia and is operated by PTTEP Sarawak Oil. According to GlobalData, who tracks more than 34,000 active and developing oil and gas fields worldwide, the field is located in block SK 309, with water depth of 164 feet. Buy the profile here.

Field participation details

The field is owned by Petroliam Nasional, PT Pertamina (Persero) and PTT Public.

Production from SK 309 & SK 311

The SK 309 & SK 311 conventional gas field recovered 46.57% of its total recoverable reserves, with peak production in 2015. The peak production was approximately 41.85 thousand bpd of crude oil and condensate and 321 Mmcfd of liquid natural gas. Based on economic assumptions, production will continue until the field reaches its economic limit in 2068. The field currently accounts for approximately 3% of the country’s daily output.

Remaining recoverable reserves

The field is expected to recover 396.63 Mmboe, comprised of 66.62 Mmbbl of crude oil & condensate and 1,980.04 bcf of liquid natural gas reserves. SK 309 & SK 311 conventional gas field reserves accounts 0.14% of total remaining reserves of producing conventional gas fields globally.

About PTTEP Sarawak Oil

PTTEP Sarawak Oil Ltd (PTTEP) is a petroleum exploration and production company. PTTEP is headquartered in Malaysia.

For more details on the SK 309 & SK 311 Conventional Gas Field, buy the profile here.


GlobalData, the leading provider of industry intelligence, provided the underlying research used to produce this article.

This information is drawn from GlobalData’s Oil & Gas Intelligence Center, which provides detailed profiles of 34,000+ oil and gas fields, 400,000+ exploration blocks, 1,100+ LNG terminals, 3,400+ gas processing plants, 5,000+ storage terminals, and 8,000+ pipelines, 1,400+ refineries and 13,000+ petrochemical plants worldwide.