Russian oil major Rosneft and Norwegian Statoil have completed drilling at two horizontal exploitation wells at the North-Komsomolskoye field in Russia.
The drilling works were concluded as a part of the Pilot Project at the PK1 layer of the oil field, Rosneft said.
The firms have used advanced extended logging for the drilling process at the sites which included core and fluid samplings.
"The pilot drilling at the North-Komsomolskoye field opens a new stage of the joint work of Rosneft and Statoil."
'Openhole gravel packing' in a horizontal section of 1,000m, was also used for the drilling, which is a first for onshore exploration in the country.
Test results from the process are expected to help in developing PK1 layer.
Once implemented, the project is likely to facilitate around 600 million tons of geological oil extraction from the site in the short term.
Rosneft chief executive officer Igor Sechin said: "Creation of partnerships for technologically complex projects' development is one of the strategic dimensions of the Company's evolvement.
"The pilot drilling at the North-Komsomolskoye field opens a new stage of the joint work of Rosneft and Statoil. The companies are working actively and continue developing the long-term cooperation."