Gazprom Constructed Dzhubga–Lazarevskoye–Sochi PL

Gazprom progresses with building the offshore section of the Dzhubga – Lazarevskoye – Sochi gas pipeline in the Black Sea. The work is being done according to schedule. By now, 30 kilometers of the offshore section, that is approximately one-fifth of the pipeline’s total length (159.5 kilometers), have been welded and placed.

The entire construction process, i.e. pipe welding, seam quality inspection, joints flashing and pipeline placement on the sea bottom, is being performed by the C-Master pipe-laying barge on a round-the-clock basis. Special-purpose vessels continuously deliver pipes from the onshore supply base.

The pipeline engineering and construction operations were arranged in such a way that ensured maximum mitigation of the environmental impact on the Black Sea ecosystem. In particular, the pipeline route was selected with due regard to the seafloor features. Prior to the construction operations, various polluting objects were removed from the pipeline route.

Considerable mitigation of the environmental impact on vulnerable coastal ecosystems is achieved through the most suitable coastal line crossing procedure – horizontal directional drilling. In addition, the crossing wells are equipped with special earthquake protection devices.

The Bigfoot I pipe-laying barge will perform the pipeline construction in shallow waters and connect the offshore section to the crossing elements.