 In addition, Sakhalin-III-through-VI are in various early stages of development.The Sakhalin I project, managed by Exxon Neftegas Limited (ENL), completed a production-sharing agreement (PSA) between the Sakhalin I consortium, the Russian Federation, and the Sakhalin government.Russia is in the process of building a pipeline across the Tatar Strait from Sakhalin Island to De-Kastri terminal on the Russian mainland.