# Harald gas field

The Harald field is a gas and associated condensate production field in the Danish sector of the central North Sea. Production of gas and liquids started in 1997, and peak gas was in 1998. The Lulita field is a satellite of the Harald field.

## The field

The characteristics of the Harald field reservoir are as follows.
| Field | Harald |
| Prospect | Lulu and West Lulu |
| Reservoir | Chalk (Harald East); Sandstone (Harald West) |
| Geological age | Danian and Upper Cretaceous (Harald East); Middle Jurassic (Harald West) |
| Offshore Block | 5604/21 & 22 |
| Reservoir depth | 2,700 m (Harald East); 2,650 m (Harald West) |
| Reservoir thickness | 75 m (Harald East); 100 m (Harald West) |
| Field delineation | 56 km$^2$ |
| Reserves | Gas: 23.9 billion Nm$^{3;}$; Condensate: 0.2 million m$^3$ |
| Discovered | 1980 (Lulu); 1983 (West Lulu) |

## Owner and operator

Maersk, Total EP Danmark, Maersk Oll og Gas A/S.

## Infrastructure

The field was developed through a single offshore installation comprising two bridge linked platforms.
Harald installations :
| Name | Harald A | Harald B |
| Coordinates | 56.345239°N 4.272022°E | 56.344143°N 4.27192°E |
| Production start | 1997 | 1997 |
| Water depth | 64 | 64 |
| Installation | Fixed steel | Fixed steel |
| Access | Bridge to B | Helicopter |
| Function | Wellhead, processing | Accommodation for 16 |
| Substructure weight tonnes | 3800 | 1700 |
| Topsides weight tonnes | 6000 | 1300 |
| Number of wells | 2 (Harald East) 2 (Harald West) | - |
| Export | Unprocessed condensate and processed gas to Tyra East. There is a connection into the 24-inch South Arne to Nybro gas pipeline | - |

## Production

An 8-inch multi-phase pipeline transports fluids from the Norwegian Trym gas field to Harald A for processing.
Production of the Harald field is by gas expansion, plus water influx.
Harald acts as the processing facility for the Lulita field.
The gas and condensate production profile of the Harald field is as shown in the tables.
Harald annual condensate production (1000 m$^3$) and gas production (million Normal m$^3$) 1997-2010 :
| Year | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Condensate | 1,092 | 2,741 | 2,876 | 2,811 | 2,475 | 2,019 | 1,563 | 1,232 | 1,091 | 927 | 781 | 690 | 400 | 592 |
| Gas | 794 | 1,690 | 1,332 | 1,081 | 866 | 578 | 425 | 314 | 237 | 176 | 139 | 114 | 65 | 70 |
Harald annual condensate production (1000 m$^3$) and gas production (million Normal m$^3$) 2011-2022 :
| Year | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | Total |
| Condensate | 573 | 541 | 174 | 274 | 389 | 334 | 276 | 195 | 179 | | | | 24,227 |
| Gas | 95 | 79 | 25 | 21 | 21 | 24 | 16 | 10 | 8 | | | | 8,180 |

## The Lulita field

The Lulita field is a satellite of the Harald field. The accumulation is oil with a gas cap, and is a structural fault trap in a Middle Jurassic sandstone. The reservoir is at a depth of 3,525 m, with a field delineation of 4 km$^2$. The field was discovered in 1992 and came onstream in 1998. The production is based on natural depletion. The reservoir is produced through two subsea wells in a water depth of 65 m, flowlines deliver the wellhead fluid to the Harald installation where dedicated equipment produces oil, gas and water streams.
The oil and gas production profile of the Lulita field is as shown in the tables.
Lulita annual oil production (1000 m$^3$) and gas production (million Normal m$^3$) 1998-2010 :
| Year | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 |
| Oil | 143 | 224 | 179 | 66 | 24 | 20 | 19 | 35 | 68 | 55 | 47 | 24 | 36 |
| Gas | 69 | 181 | 160 | 27 | 6 | 5 | 5 | 13 | 38 | 33 | 30 | 15 | 18 |
Lulita annual oil production (1000 m$^3$) and gas production (million Normal m$^3$) 2011-2022 :
| Year | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | Total |
| Oil | 36 | 32 | 17 | 26 | 18 | 31 | 25 | 23 | 24 | | | | 1,170 |
| Gas | 20 | 19 | 11 | 18 | 11 | 24 | 23 | 16 | 15 | | | | 759 |