Harald

Harald Oil and Gas Field Profile

Location

The Harald field is situated in the Danish sector of the central North Sea, approximately 280 km northwest of Esbjerg, Denmark. The specific coordinates for the field are around 56.345239°N 4.272022°E for Harald A and 56.344143°N 4.27192°E for Harald B.

Discovery and Production

• The Harald field was discovered in 1980 (Lulu prospect) and 1983 (West Lulu prospect).
• Production of gas and associated condensate began in 1997, with peak gas production achieved in 1998.

Reservoir Characteristics

• The reservoir is divided into two main areas: Harald East and Harald West.
  • Harald East: Chalk reservoir, Danian and Upper Cretaceous geological age, at a depth of 2,700 meters, with a reservoir thickness of 75 meters.
  • Harald West: Sandstone reservoir, Middle Jurassic geological age, at a depth of 2,650 meters, with a reservoir thickness of 100 meters.

Field Delineation and Reserves

• The field covers an area of approximately 56 km².
• Reserves include:
  • Gas: 23.9 billion Nm³ (or approximately 611.93 million m³ as 2P reserves).
  • Condensate: 0.2 million m³ (or approximately 0.7 million barrels as 2P reserves).

Infrastructure

• The field is developed through a single offshore installation consisting of two bridge-linked platforms: Harald A and Harald B.
  • Harald A: Wellhead, processing, and utility platform. It includes equipment for separation, gas compression, dehydration, and power generation. The platform has a substructure weight of 3,800 tonnes and topsides weight of 6,000 tonnes. It is connected to Harald B via a bridge and has two wells each in Harald East and Harald West.
  • Harald B: Accommodation platform designed for a crew of 16 persons with control room facilities. The platform has a substructure weight of 1,700 tonnes and topsides weight of 1,300 tonnes. Access is via helicopter.

Production and Processing

• Production is achieved through gas expansion and water influx.
• The Harald field acts as the processing facility for the Lulita field, a satellite field.
• Fluids from the Norwegian Trym gas field are transported to Harald A via an 8-inch multi-phase pipeline for processing.
• The processed gas and unprocessed condensate are exported to Tyra East via a connection into the 24-inch South Arne to Nybro gas pipeline.

Lulita Field

• The Lulita field is a satellite of the Harald field, discovered in 1992 and brought online in 1998.
• It is an oil field with a gas cap, located in a Middle Jurassic sandstone reservoir at a depth of 3,525 meters.
• Production is based on natural depletion through two subsea wells in a water depth of 65 meters. The wellhead fluid is delivered to the Harald installation for processing.

Ownership and Operation

• The field is operated by TotalEnergies, with ownership shared among the Danish Underground Consortium, which includes TotalEnergies (43.2%), BlueNord (36.8%), and Nordsøfonden (20%).

Recent Developments

• In October 2024, TotalEnergies announced a new gas condensate discovery at the Harald field with the HEMJ-1X well, which encountered 48 meters of net gas condensate pay. This well is expected to be connected to the Harald platform and start production before the end of 2024, contributing to the extension of the Harald hub's life and boosting Danish energy supply.

Environmental and Social Impact

• The Harald project includes initiatives to reduce flaring and energy consumption. The facilities are designed for continuous operation with planned maintenance to minimize production downtime. The energy supply to the Harald facility includes self-produced natural gas and diesel.

Production Profile

• The production profile of the Harald field shows a decline over the years, with significant production in the late 1990s and early 2000s. By 2020 and 2021, gas and oil production had significantly decreased, but the recent discovery is expected to revitalize production levels.