Starstroi is the general contractor for building the pipeline.
Only the pipeline thread is being laid, the Sakhalin administration told RIA Novosti.
The regional governor has placed the chief supervisory action for building the pipeline and a natural gas liquefaction plant on his deputy Sergei Belozerskikh.
Sakhalin-2 is Russia's first project within the product-sharing agreement. The oil and gas fields, lying on the Sakhalin shelf 15 kilometers off the northwestern coast, contain a total of 18 trillion cubic feet of gas.
Sakhalin Energy Investment Company Ltd. (Sakhalin Energy) is the operator for the Sakhalin-2 project.
Its shareholders are Shell Sakhalin Holdings B.W. - 55 percent (Britain/Holland), Mitsui Sakhalin Holdings B.W. - 25 percent (Japan), Mitsubishi's subsidiary Diamond Gas Sakhalin B.W. - 20 percent (Japan).