Dongfang 13-1

Location and Discovery

• The Dongfang 13-2 gas fields are located offshore Dongfang City, in the Hainan Province of China, within the Yinggehai Basin of the Beibu Gulf of the Western South China Sea, approximately 132 km west of the Hainan coast.

Discovery

• The Dongfang 13-2 fields were discovered in April 2012 by the DF13-2-1 discovery well, which encountered 35m-thick high-pressure and high-temperature gas pay zones and witnessed an average gas flow rate of 42.4 million cubic feet a day (Mcfd).

Project Development

• The project is being developed by China National Offshore Oil Corporation (CNOOC) as part of its $12.7 billion investment program to bring on-stream the Dongfang gas fields along with other fields such as Stampede, Weizhou 6-13, and Penglai 19-3 oil fields.

Infrastructure

• The project involves 30 gas production wells, one central platform, two wellhead platforms, and associated subsea infrastructure. The central platform measures 115m-long, 46m-wide, and 96m-tall, while the two wellhead platforms have a combined weight of 19,100 tonnes.
• The offshore platform includes six electricity-driven compressor trains (three wet gas and three dry gas compressor trains) and is powered by three SGT-600 power generation trains, each with a 25MW rated capacity.

Gas Transportation

• The gas produced from the DF 13-2 fields will be supplied to the gas markets of Guangdong, Hainan, Hong Kong, and other Chinese provinces through four submarine pipelines with a combined length of 223.8 km. The pipe-laying work was completed between September 2017 and February 2018 using CNOOC’s deep-water crane vessel Offshore Oil 201.

Production Capacity

• The DF 13-2 gas development project is estimated to have a production capacity of 43,400 barrels of oil-equivalent per day (boed).

Contractors and Partners

• Fluor, along with CNOOC’s subsidiary China Offshore Oil Engineering Corporation (COOEC), was responsible for the assembly, load-out, and commissioning of the central platform and wellhead platforms. The fabrication work for the wellhead platform was carried out at the COOEC-Fluor yard at Zhuhai, near Hong Kong.
• Harbin Guanghan Gas Turbine (HGGT) provided the power generation systems and other auxiliary systems, subcontracting Dresser-Rand (a subsidiary of Siemens) for the power generation units. MAN Diesel & Turbo (now MAN Energy Solutions) supplied the six compressor trains for the project.

Significance

• The Dongfang 13-2 project is part of CNOOC's efforts to enhance offshore production, with the field expected to become one of the significant gas producers in the South China Sea, following the Yacheng 13-1 field.

Given the information, there is no specific "Dongfang 13-1 oil project" mentioned, but the details provided pertain to the gas fields development in the same general area.