Royal Dutch Shell and Russia's Gazprom have signed a co-operation agreement that will see them exploring for more oil together in western Siberia and the far east of Russia.
As part of the deal, Shell has agreed to let Gazprom share some of its overseas projects in return for Shell being allowed to develop the third and fourth stages of the Sakhalin project in Sakhalin Island, Russia. Sakhalin 3 alone contains 1.4 trillion cubic metres of gas.