Within the Sakhalin-5 project, Rosneft and BP jointly carry out exploration activities at Kaigansko-Vasyukansky licensed blocks on Sakhalin shelf.

Project participation:

• Rosneft — 51%
• BP — 49% 

In 2004–2009 the companies carried out exploration at East-Schmidtovsky license area. In 2009, based on analysis of data from drilling at the West-Schmidtovsky area and of seismic data from the East-Schmidtovsky area drilling of exploration wells was abandoned at the East-Schmidtovsky area and the license surrendered.

The Kaigansko-Vasyukansky block, with a total area of 7,200 square km, is located in the northeastern part of Sakhalin shelf. The sea depth in this area varies from 90 to 120 meters. To date, 13 prospective structures have been revealed within the block.

In 2004, the first exploration well was drilled, which revealed the Pela Leich reservoir. In 2005, the Udachnaya exploration well was drilled, which also revealed a prospective reservoir. The obtained data confirmed high hydrocarbon potential of the Kaigansko-Vasyukansky block. In 2006, exploration wells were drilled at the South-Vasyukanskaya and Savitskaya structures.

In march 2007, a discovery certificate to the Kaigansko-Vasyukanskoye-Sea field was received. The field’s recoverable ABC1 reserves amount to 118 mln barrels (16.14 mln tonnes) of crude oil and gas condensate.

In 2008, 2,100 linear km of 2D seismic shooting were carried out in the western part of the Kaigansko-Vasyukansky block. The license for the block was extended until 2013 with amendments to the license agreement.

Seismic exploration work (235 linear km of 2D and 917 square km of 3D) was carried out at the Kaigansko-Vasyukansky license area in order to study coastal structures in 2009.

In 2010, сomplex interpretation of 3D seismic exploration and deep drilling data was continued at the Kaigansko-Vasyukansky license area. Processing and interpretation of 2D seismic materials for a transitional zone at the area was completed.

Exploration activities at the Kaigansko-Vasyukansky block of Sakhalin-5

In the Far East, Rosneft is also carrying out exploration work at the Lebedinsky and Nekrasovsky areas (the license for the latest was acquired in 2010).

In 2010, 3D seismic was carried out on 70 square km at the Lebedinsky license area. The location for a future well was chosen, and drilling is planned in 2011.