Trym

Trym Oil and Gas Field Profile

Location

The Trym oil and gas field is located in the southern part of the Norwegian sector of the North Sea, approximately 3 kilometers from the border to the Danish sector. The field is situated in production licence 147 of Block 3/7, with a water depth of 65 meters.

Discovery and Development

• The Trym field was discovered in 1990 by Shell with the drilling of the 3/7-4 discovery well. The well flowed at a rate of 29.6 million cubic feet per day of gas and 3,800 barrels per day of condensate.
• Despite the discovery, the field was not developed immediately due to low market prices at the time. Shell and its partners later sold their interest in the field to DONG Energy (now Ørsted) and Bayerngas Norge.

Field Development Plan

• DONG Energy submitted a new plan for development and operation (PDO) to the Norwegian authorities in October 2008, which was approved in March 2010.
• The field was developed using a tri-lateral subsea template with two horizontal production wells tied back to the Harald platform, located 5.5 kilometers away in the Danish sector. This approach utilized existing infrastructure, reducing development costs.

Production

• Production from the Trym field began in February 2011. The field produces gas and condensate, with the hydrocarbons processed on the Harald platform before being transported through the Danish pipeline system via the Tyra field.
• As of 2020, the cumulative production from the field included 10.54 million barrels of oil and 3718.11 million cubic meters of gas.

Reserves

• The original recoverable reserves of the Trym field were estimated at 4480 million cubic meters of gas and 11.2 million barrels of oil. By 2020, the remaining reserves were 710 million cubic meters of gas and 0.75 million barrels of oil.

Reservoir and Geology

• The field reservoir lies at a depth of approximately 3400 meters and is a fault and dip closed structure. The gas reserves are found in the Upper Jurassic sandstones, while the condensate is found in the Middle Jurassic sandstones of the Sandnes and Bryne Formations.

Recovery Strategy

• The field is produced using natural pressure depletion. A low-pressure project was initiated in 2017 to accelerate production and increase final recovery.

Current Status

• Production from the Trym field was temporarily shut-in in September 2019 due to a major redevelopment project on the Tyra field in the Danish sector. Production is expected to restart in 2024 once the Tyra project is completed.

Operators and Ownership

• The Trym field is operated by DNO Norge AS, with ownership split between DNO Norge AS (50%) and Sval Energi AS (50%). However, historical ownership involved DONG Energy (now Ørsted) and Bayerngas Norge, each holding 50% interest before the current ownership structure.

Infrastructure and Transport

• The well stream is processed on the Harald facility, and then the gas and condensate are transported through the Danish pipeline system via the Tyra field. The gas is sent to Nybro, and the condensate is sent to Fredericia in Denmark.

Additional Discoveries

• In March 2013, DONG Energy drilled a wildcat well 3/7-8 S, 2 kilometers south of the Trym field, which encountered a 159-meter oil and gas column in the Sandnes and Bryne formations. This discovery, known as Trym South, is estimated to contain one to two million standard cubic meters of recoverable oil equivalents and is being further assessed for commercial viability.