This field in the Norwegian Sea has been producing oil and gas since October 1995 from a floating tension leg platform with a concrete hull.
Heidrun was discovered in 1985 by Conoco, which served as operator for the exploration and development phase.
The field
A total of 76 wells are planned on the main field, including 51 producers, 24 water injectors and one gas injector.
The north flank of Heidrun was brought on stream in August 2000.
Transport
Oil from the field is primarily shipped by shuttle tanker to StatoilHydro's Mongstad crude oil terminal near Bergen for onward transport to customers.
Gas from Heidrun is piped to Tjeldbergodden in mid-Norway and provides the feedstock for the StatoilHydro methanol plant there.
From 2001, the field has also been tied to Åsgard Transport.
Heidrun gas is piped through this trunkline to Kårstø north of Stavanger and on to Dornum in Germany – a total distance of roughly 1400 kilometres.
Environment
Heidrun has become the first StatoilHydro field which can handle all produced water without any environmentally-harmful discharges.
This follows the investment of some NOK 600 million by the Heidrun licencees in a plant for injecting such water - and any oil or chemical residues it contains - back into the reservoir.
The result is zero harmful discharges under normal operation, without any increase in emissions to the air. And the injected water serves as pressure support to improve oil recovery.
The injection facility is able to handle just over 110,000 barrels of produced water per day.
