Piltun-Astokhskoye-B platform (PА-B)

The Piltun-Astokhskoye-B (PA-B), the largest platform of the Sakhalin-2 project, is a drilling, processing and production platform that has been extracting oil and associated gas from the Piltun reservoir since 2008. The hydrocarbons from the PA-B platform flows through the offshore and onshore pipelines to the LNG plant and oil export terminal at the Prigorodnoye production complex. Platform statistics:

  • The PA-B platform is designed for year-round operation in harsh climatic conditions and is built to withstand rough seas, ice and high seismic activity.
  • It is located 12 km off the northeastern coast of Sakhalin Island, in a water depth of around 30 m.
  • Four legged concrete gravity base substructure (CGBS) that was engineered and constructed in Vostochniy port by Aker Kvaerner Technology AS and Quattrogemini OY. PA-B CGBS was installed in August 2005.
  • Fully integrated deck construction built separately in South Korea, Samsung Heavy Industries construction yard. The topsides were installed in July 2007 on the pre-installed CGBS by float over technique.
  • With the topsides installed on the base structure, the total height of the PA-B platform is 121 m from the sea floor to the top of the derrick - as large as a 30 storey building.
  • The platform includes drilling and gas/hydrocarbon liquids/water separation facilities, storage for chemicals.
  • The living quarters have a capacity for 100 permanent and an additional 40 temporary staff.
  • Production capacity: oil approximately 70,000 b/d (11,130 m3/d); associated gas 100 mln scf/d (2.8 mln m3/d).

    The Piltun-Astokhskoye-B (PA-B) in wikipedia