The Tyra Centre consists of the installations at Tyra, Roar, Valdemar, Tyra Southeast and Svend. The Harald installations, which process production from Harald and Lulita, also form part of the Tyra Centre.
The Tyra Field
The Tyra Field installations comprise two platform complexes, Tyra West (TW) and Tyra East (TE).
Tyra West consists of two wellhead platforms, TWB and TWC, one processing and accommodation platform, TWA, and one gas flare stack, TWD, as well as a bridge module installed at TWB and supported by a four-legged jacket, TWE.
The Tyra West processing facilities include plant for pre-processing oil and condensate production from the wells at Tyra West. Moreover, the Tyra West complex houses facilities for the injection and/or export of gas and processing facilities for the water produced. Oil and condensate are transported to Tyra East for final processing. Tyra has wellhead compression facilities to which the Tyra oil wells and satellite wells, including Harald, are connected.
The development plan of the Halfdan Field (Igor) approved in June 2006 comprises an increase of the wellhead compression capacity at Tyra West. the new capacity makes it possible to operate the Halfdan gas wells at a low wellhead pressure maintaining the service to the oil wells in the Tyra Field and all wells at Harald, Roar, Valdemar and Tyra Southeast.
Tyra East consists of two wellhead platforms, TEB and TEC, one processing and accommodation platform, TEA, one gas flare stack, TED, and one riser platform, TEE, as well as a bridge module supported by a STAR jacket, TEF.
Tyra East receives production from the satellite fields, Roar, Svend, Tyra Southeast and Harald/Lulita, as well as gas production from the Gorm and Dan/Halfdan Fields and liquids from Valdemar. The Tyra East complex includes facilities for the final processing of gas, oil, condensate and water.
Tyra West receives the gas produced in the Valdemar and the Halfdan NE/Halfdan satellite fields. The Tyra West complex includes facilities for the final processing of gas and water. Oil and condensate are transported to Tyra East for final processing.
The two platform complexes in the Tyra Field are interconnected by pipelines in order to generate the maximum operational flexibility and reliability of supply.
Oil and condensate production from the Tyra Field and its satellite fields is transported ashore via Gorm E, while the gas produced is transported from TEE at Tyra East to Nybro on the west coast of Jutland and from TWE at Tyra West to the NOGAT pipeline for export ashore in the Netherlands.
Treated production water from the Tyra Field and its satellite fields is discharged into the sea.
Tyra East has accommodation facilities for 96 persons, while there are accommodation facilities for 80 persons at Tyra West.
The Roar Field
The Roar Field has been developed as a satellite to the Tyra Field with an unmanned wellhead platform of the STAR type without a helideck. After separation into a gas and a liquid phase, the hydrocarbons produced are conveyed through two pipelines to Tyra East for processing and export ashore.
The Valdemar Field
The Valdemar Field has been developed comprising two satellite installations to Tyra, Valdemar A and Valdemar B.
Valdemar A comprises two unmanned wellhead platforms (VAA and VAB) of the STAR type without a helideck, connected by a bridge. After separation the production of gas is transported to Tyra West for processing and transportation ashore/export, while the liquid production (oil and water) is transported to Tyra East for processing and export ashore.
Valdemar B comprises an unmanned wellhead platform (VBA) of the STAR type without a helideck, some 4 km from the Valdemar VAA/VAB complex. The production from Valdemar VBA is conveyed to the Roar installations through a multiphase pipeline which on the seafloor is tied in to the gas pipeline between Roar and Tyra East. The production from the Valdemar VBA platform is transported to Tyra East for processing and export ashore.
The Tyra Southeast Field
The Tyra Southeast Field has been developed as a satellite to Tyra, including an unmanned wellhead platform of the STAR type without a helideck. After separation into a gas and a liquid phase, the production is transported to Tyra East in two pipelines to be processed and subsequently exported ashore.
The Svend Field
The Svend Field, situated about 65 km north of the Tyra Field, has been developed as a satellite to the Tyra Field, with an unmanned STAR platform without a helideck. The hydrocarbons produced are conveyed to Tyra East for processing and export ashore. The Svend Field is connected to the 16" multiphase pipeline from Harald to Tyra East.
The Harald Field
The Harald Field, situated about 80 km north of the Tyra Field, comprises a combined wellhead and processing platform, Harald A, and an accommodation platform, Harald B.
The processing facilities consist of a plant that separates the hydrocarbons produced at Harald and Lulita, as well as a plant for the final processing of the gas produced. The production of oil and condensate and the processed gas are transported to Tyra East. Treated water from the Harald and Lulita Fields is discharged into the sea from Harald A.
The Harald Field is hooked up to the gas pipeline that conveys gas from the South Arne Field to Nybro. Normally, no gas is exported from Harald through the pipeline.
The Harald B platform has accommodation facilities for 16 persons.
The Lulita Field
Production from the Lulita Field takes place from the fixed installations in the Harald Field. Thus, the Lulita wellheads are hosted by the Harald A platform, and the Harald platform facilities also handle production from the Lulita Field.
Together with the condensate produced at the Harald Field, the Lulita oil is conveyed through a 16” pipeline to Tyra East for processing and then exported ashore. The gas produced in the Lulita Field as well as the Harald Field is transported to Tyra East through the DONG-owned gas pipeline connecting Harald with Tyra East, from where it is transported to shore.