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Statoil Yme East and West

Statoil Yme East and west

Norway Blocks 9/2 and 9/5

Landmark: World’s first subsea Hinge Over Subsea Template (HOST®) system

The Yme field was discovered by Statoil in 1987. It lies in Blocks 9/2 and 9/5, about 100 miles (160 km) northeast of Ekofisk in the Norwegian North Sea. The jackup Maersk Giant platform began producing oil from the field in February 1996. Yme ranks as the smallest field off Norway with independent production facilities, and the first Statoil development where the installations are owned and operated by external contractors.

Four wells drilled from the platform produced oil from the Gamma structure. In addition, platform wells for injecting produced water and surplus associated gas to maintain reservoir pressure. The Beta East and Beta West structures were produced through four wells in a subsea template located about 7.5 miles (12 km) from Gamma, with the oil piped to the platform for processing.

The storage ship, which holds up to 1 mmbo was moored and loaded by the submerged turret loading (STL) system. After being discharged to a shuttle tanker, oil goes to the Statoil Mongstad terminal near Bergen for final processing and fiscal metering. The Yme field was shut down in 2001.

  • Four vertical 5"x2" 5,000 psi subsea trees
  • One HOST® subsea template
  • Four 18-3/4" UWD-II subsea wellheads
  • Mechanically oriented tubing hanger (metal seals throughout) run with hydraulically actuated tool
  • Stainless-steel block with inconel-clad production/injection valve seat pockets and ring grooves
  • Remote-retrievable choke bridge arrangement
  • Pressure and temperature transducers on subsea tree and downhole
  • Vertical wireline access for production and annulus through tubing hanger/subsea tree
  • Diverless makeup flowline and controls umbilical installed by ROVCON®
  • Multiplexed electro-hydraulic control system
  • Eight miles (13 km) subsea control umbilical
  • ROV interface/override facilities
  • System integration, testing, installation assistance, service and maintenance