The Dzhubga – Lazarevskoye – Sochi Project
The Dzhubga – Lazarevskoye – Sochi gas pipeline is part of the Program for Construction of Olympic Facilities and Development of Sochi as a Mountain-Climatic Resort, approved by the Government of the Russian Federation. The gas pipeline is designed to provide a reliable energy supply to Sochi and other areas, including delivery of gas to the Olympic facilities which are under construction; it gives a powerful impulse to the implementation of gas supply in both private and public households of Sochi and the Tuapse District, particularly facilitating the power supply on the Black Sea coast of the Caucasus.
The total length of the gas pipeline is 177 kilometers, including the 159.5 kilometer offshore section. The pipeline route runs on the Black Sea bottom following the coastline (approximately 4.5 kilometers away from the coast) to the Kudepsta gas distribution station near Sochi. The 24 inches gas pipeline will have an annual throughput capacity of approx 3.8 billion cubic meters.
GSP, as contractor for the offshore works, installed the submarine pipelines (159.5 km), including welding, nondestructive testing, inspection, pipe transport, installation of five shore approaches, pipeline tie-ins, ROV operations, surveys, trenching and pipeline hydro-testing.
The Akcakoca Project
The Akcakoca site is located in a water depth of 95 metres, approximately 14 km from shore. The Akcakoca gas project included fabrication, transport, installation and hook-up of a 4-leg jacket over the two predrilled wells, AKC-3 and AKC-4, and drilling three new directional wells, using GSP’s self contained modular drilling rig GSP 31, which will also be used for completing and maintaining all wells.
The four leg cross-braced jacket supports a two level trussed deck, also fabricated, installed and hooked-up by GSP.
GSP Bigfoot 1 installed subsea pipelines of 12’’ and 7 kilometers and made tie-ins to the existing offshore pipeline system via a piggable wye connection, for transporting the produced gas from the Akcakoca platform to the Cayagzi gas processing plant located onshore near Akcakoca town.
GSP carried out all fabrication, construction, installation, drilling and pipelay for the project.
Click here to view more pictures from the Akcakoca project.
The Galata Project
In early 2009, Melrose Resources commenced a development program to convert the Galata field offshore Bulgaria to a gas storage facility.
GSP was awarded the contract for engineering, procurement, fabrication, transportation, offshore installation and testing of the pipelines 8.5 km x 6” from Galata Platform to Wellhead Kavarna 2, and 14.5 km x 10” from Galata Platform to Wellhead Kaliakra 2, with associated piggyback liquid lines.
Pipeline installation was performed by GSP Bigfoot 1 in water depths ranging from 36 to 80 meters.