Erawan

Erawan Oil and Gas Field Profile

Location

The Erawan Oil and Gas Field is located offshore in the Gulf of Thailand, specifically within Block G1/61. The field is situated in shallow water with a depth of approximately 243 feet.

Coordinates

The coordinates for the Erawan Oil and Gas Field are approximately 9.152, 101.436 (WGS 84).

History

• The field was discovered in 1972, and the first commercial production began in 1981, making it the first commercial natural gas field in the Gulf of Thailand.
• The field was officially named "Erawan" in 1978, symbolizing a mythical three-headed elephant from the Ramayana, which represents power.

Operator and Ownership

• The field is currently operated by PTT Exploration and Production Public Company Limited (PTTEP).
• The ownership is shared between Mubadala Investment Company (40%) and PTTEP (60%).

Infrastructure

• The field utilizes several production platforms, including Erawan BWA, EWG, SWA, and a Mercury Removal Platform (ERMRP).
• The field also employs a Floating Storage and Offloading (FSO) vessel, with contractors such as Sofec, Bluewater, Micoperi, Saipem, and Cuel involved in various aspects of the infrastructure.

Production

• The Erawan field is primarily a gas field but also produces condensate and a small amount of oil.
  • As of 2021, the cumulative production included 115.75 million barrels of condensate and 96,431.83 million cubic meters of gas.
  • The annual production rates have been significant, with gas production reaching 2,170.47 million cubic meters per year in 2022.
  • The field currently accounts for approximately 9% of Thailand's daily gas output.

Reserves

• The proven reserves (1P reserves) as of 2021 include:
  • Condensate: 5.01 million barrels
  • Gas: 4,821.18 million cubic meters
  • Oil: 0.05 million barrels.

Production Capacity and Future Outlook

• The field's production design capacity for gas is 146,000 million cubic meters per year as of 2023.
• Based on economic assumptions, production is expected to continue until the field reaches its economic limit in 2048, having recovered 72.31% of its total recoverable reserves by 2023.

Geology

• The field is part of the Cenozoic sedimentary basins in the Gulf of Thailand, specifically within the Pattani Basin and the North Malay Basin, which are the most successful areas for petroleum exploration and production in Thailand.

Milestones and Achievements

• The Erawan field was a pioneering project in the Gulf of Thailand, with Chevron (formerly Unocal) playing a significant role in its early development. Key milestones include the signing of the first gas sales agreement in 1978 and the start of gas supply from the Erawan-A Platform in 1981.