EnQuest PLC was awarded a 4-year extension to the Block 12W Production Sharing Contract by PetroVietnam.
This extension runs to July 2034 from the original contract end date of November 2030, allowing the operator to access prospectivity across three gas discoveries and several additional targets. EnQuest aims to initiate plans to progress discovered resources into reserves.
Since completion of the acquisition of Block 12W from Harbour Energy in July 2025, EnQuest completed three proactive well interventions from Chim Sáo and Dua fields that boosted gross fourth-quarter 2025 production to 10,400 boe/d (5,500 boe/d net to EnQuest).
Block 12W is comprised of three producing oil and gas fields; Chim Sáo, Chim Sáo North West (CSNW), and Dua, all in the the Nam Con Son basin, about 400 km south west of Vung Tau, Vietnam.
Developed via a single wellhead platform, Chim Sáo and CSNW oil production is exported via the Lewek Emas floating production storage and offloading (FPSO) vessel, and gas is exported by pipeline to Vung Tau near Ho Chi Minh City. Chim Sáo currently has 14 active oil producers and seven water injectors. CSNW is developed via a single injector and producer pair.
Dua oil and gas field was developed as a subsea tie-back to Chim Sáo. Its production is via three subsea oil producers.
EnQuest is operator of the block (53.125%) with partners Bitexco (31.875%) and PetroVietnam (15%).
