Block B & 48/95, 52/97 gas development (Block B – O Mon gas-to-power)
Vietnam
A new offshore gas hub.
SizeGas for ~3,800 MW of power at O Mon; EPCI#1 >US$1 bn
- FID
- Engineering
- Fabrication (named in the reported phase)
- Construction (named in the reported phase)
- Installation
- Commissioning
Phase, as reported: fabrication / construction
…
Who builds it
- Phu Quoc Petroleum Operating Company operator
- McDermott
- PTSC
- Vietsovpetro
Reported risk First gas has moved from end-2026 to no later than Q3 2027, consistent with the February 2027 load-out of the living-quarters module…
7 sources checked on 2026-10-08
More why we watch it · key dates · all contractors · sources
Why we watch it
A new offshore gas hub — central production platform, living-quarters platform, flare and bridges — fabricated in Vietnam under a McDermott-led EPCI contract, then installed and hooked up offshore.
Phase in full, as reported
fabrication / construction (EPCI#1 at ~29% overall progress with detailed engineering >71% as of August 2025; LQ fabrication underway)
Reported risk in full, as reported
First gas has moved from end-2026 to no later than Q3 2027, consistent with the February 2027 load-out of the living-quarters module. Downstream power plants lag: until end-2028 mainly O Mon I will be able to take Block B gas.
Who builds it as stated by the sources
Operator / developerPhu Quoc Petroleum Operating Company (PQPOC) for Petrovietnam (PVN), with MOECO, PVEP, PV Gas and PTTEP as partners
- McDermottConsortium leader with PTSC for EPCI package #1: EPCI and hook-up/commissioning of the central production platform, living-quarters platform, flare tower and bridges (limited letter of award Oct 2023; full contract value >US$1 billion)
- PTSC (Petrovietnam Technical Services Corporation)Consortium partner on EPCI#1; PTSC M&C fabricating the living-quarter module (LQM, ~2,643 t) and living-quarter utility deck (LQU, ~3,236 t) — first cut August 2025, LQM load-out scheduled 24 February 2027
- VietsovpetroFabrication yard (VSP yard) named by PTSC for the living-quarter units
Key dates as stated by the sources
- FID or award
- EPCI#1 limited letter of award to McDermott–PTSC on 31 October 2023; consortium leading the package since October 2023
- Milestone
- LQM fabrication commenced 1 August 2025; LQM load-out scheduled 24 February 2027
- Startup target
- First gas from Block B no later than Q3 2027 (Government Office Notification 487/TB-VPCP, 15 September 2026); O Mon I commercial operation December 2027, O Mon IV December 2028, O Mon II Q4 2029, O Mon III May 2030 (Can Tho Department of Industry and Trade, October 2026)
Disciplines likely needed our inference
- structural/topsides fabrication supervision
- piping and E&I engineering
- offshore installation and HUC
- pipeline engineering
- commissioning (gas processing, power)
- project controls/planning
- HSE
Derived by us from project kind and phase - not stated by the sources below.
Sources checked on 2026-10-08
- McDermott, PTSC Consortium Receives Limited Letter of Award for Block B Gas Development Project Offshore VietnamMcDermott (company newsroom) · 2023-10-31
- PTSC commences construction of LQM and LQU for the Vietnam Block B Gas ProjectPTSC (company news) · 2025-08
- Vietnam's gas-to-power project moves forward with planned investment nearing $12 billionOffshore Energy (trade press) · 2024-06-04
- Vietnam aims to fuel 3 power plants with Block B gas: PMThe Investor (Vietnam) · 2024-05-13
- Chuỗi dự án khí - điện Lô B - Ô Môn: Tiến độ của một mắt xích không thể tách khỏi toàn ChuỗiNăng lượng Việt Nam (Vietnam Energy Association journal) · 2026-09-22
- Chuỗi dự án khí - điện Lô B - Ô Môn và lịch tiến độ tích hợp các dự án thượng nguồn, trung nguồn, hạ nguồnNăng lượng Việt Nam · 2026-09-24
- Cần Thơ: Dòng khí Lô B dự kiến về năm 2027, các nhà máy Ô Môn vận hành từ cuối 2028Báo Xây dựng (Ministry of Construction newspaper) · 2026-10-01
Position on the globe: 7.90°N 103.20°E. Location approximate: Blocks B, 48/95 and 52/97 in the Malay–Tho Chu basin, southwest Vietnam continental shelf, ~77 m water depth, 300+ km offshore Ca Mau; gas piped ~400 km to the O Mon power complex at Can Tho. Exact CPP location not published in sources checked.
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