Zawtika Phase 2A

Project Overview

• The Zawtika Phase 2A Gas Phase is part of the Zawtika Gas Project, which includes the development of the Zawtika, Kakonna, and Gawthaka natural gas fields.

Location

• The project is situated in blocks M9 and M11 of the Gulf of Martaban, offshore Myanmar, with exact coordinates at 14.42, 95.006 (WGS 84).

Operator and Ownership

• The project is operated by PTTEP International Limited, which owns an 80% interest. Myanma Oil and Gas Enterprise (MOGE) holds the remaining 20%.

Discovery and Development

• The discovery of the Zawtika field and subsequent fields occurred in 2007. PTTEP drilled seven exploration wells in Block M9, including Zawtika-1, Gawthaka-1, Kakonna-1, Zawtika-2, Zawtika-3, Zawtika-4, and Zawtika-5.

Field Development Plan

• The field development plan was submitted to MOGE in the last quarter of 2011 and approved in February 2011. Detailed engineering and construction work were completed in the third quarter of 2013.

Phases of Development

• The Zawtika project is being developed in phases:
  • Phase 1A: Included the installation of the ZPQ processing platform, a living quarters module, and three wellhead platforms (WP1, WP2, and WP3), along with intra-field sealines, offshore and onshore gas export pipelines, and other infrastructure.
  • Phase 1B: Involved the engineering, design, construction, and installation of four wellhead platforms and the laying of four submarine pipelines.
  • Phase 1C: Included the engineering, procurement, construction, and installation of wellhead platforms, pipelines, and tie-ins, as well as brownfield modifications of existing platforms and the installation of telecommunication and control systems.
  • Phase 1D (Zawtika Phase 2A): This phase involves the installation of eight remote wellhead platforms, the drilling of eight new remote extraction wells (ZWP12 to ZWP19), and associated pipelines with two pipeline end manifolds. This phase is expected to be commissioned in 2025.

Production and Reserves

• The project is estimated to contain around two trillion cubic feet (tcf) of gas.
• The production design capacity for Phase 2A is approximately 4,134.22 million cubic meters per year (m³/y).
• The overall project currently produces natural gas at a rate of 3277.95 million cubic meters per year (m³/y) as of 2023, with peak production expected in 2030.

Infrastructure

• The project includes a 28-inch diameter, 300-kilometer-long pipeline for exporting natural gas to Thailand, with 230 kilometers laid offshore and 70 kilometers onshore.
• The subsea pipelines are 21 kilometers long with an 18-inch diameter.

Geology

• The gas fields are biogenic gas formations consisting of reservoirs of Miocene-Pliocene Delta Front sandstones at depths of 750 meters to 1,580 meters, and shallower reservoirs in the Pleistocene strata at depths of 500 meters.

Current Status

• The Zawtika Phase 2A Gas Phase is currently in development, with an expected production start in 2025.

Export and Domestic Use

• Approximately 80% of the produced natural gas is exported to Thailand, while the remaining 20% is used for domestic purposes in Myanmar.