SCPX Early Works and Facilities

The South Caucasus Pipeline is a natural gas pipeline built to export Shah Deniz gas from Azerbaijan to Georgia and Turkey. The 42” pipeline starts from the Sangachal terminal near Baku and follows the route of the Baku-Tbilisi-Ceyhan crude oil pipeline through Azerbaijan and Georgia to Turkey, where it is linked to the Turkish gas distribution system. The length of the pipeline is 691 km, with 443 km in Azerbaijan and 248 km in Georgia and the system design capacity is 7 bcma.

The expansion of the South Caucasus Pipeline is part of the Shah Deniz Full Field Development Project. This expansion involves the laying of new pipeline across Azerbaijan and the construction of two new compressor stations and a Pressure Reduction and Metering Station in Georgia. This will triple the gas volumes annually exported through the pipeline to over 20 billion m3.

ENKA with its joint venture partner Bechtel is contracted by SCP Co. for all the early work, the construction of Compressor Stations Georgia 1 & 2 and the Pressure Reduction and Metering Facility in Georgia. The scope of works also includes the construction of a 15 km Access Road and brownfield modifications within the existing facilities of the Pipeline.

Compressor Station 1 scope of works consists of the installation of pig traps capable of launching and receiving 48” Pipeline Integrity Gauges, four gas turbine driven compressors (21.6 MW), aftercoolers, two gas turbine generators (4.5 MW) and a high-pressure vent stack. The scope of work also includes the supply and erection of eight process buildings, a gate house, the installation and pre-commissioning of piping, electrical, instrumentation, telecommunications and all processing equipment.

The Compressor Station 2 scope of works consists of the installation of four gas turbine driven compressors (20.4 MW), three gas turbine generators (4.5 MW) and a highpressure vent stack. The scope of work also includes the supply and erection of 10 process buildings, the installation and pre-commissioning of piping, electrical & instrumentation, telecommunications and all processing equipment.

The BEJV scope of works also includes the supply and fabrication of all structural steel and fabrication of all piping including the pipeline connection sections to the South Caucasus Pipeline.

Project Description

Early Works & Facilities Construction for South Caucasus Pipeline Expansion

  • Partial Procurement
  • Fabrication of Structural Steel & Pipe Spools
  • Construction

Project Features

Scope of Work
Partial Procurement, Fabrication of Structural Steel & Pipe Spools, Construction
Contractor
BECHTEL & ENKA Joint Venture (50 %)
Client
South Caucasus Pipeline Company Ltd
Consortium
BP (UK) 28.8%, SOCAR (Azerbaijan) 16.7%, Petronas (Malaysia) 15.5%, Lukoil (Russia) 10%, Naftiran Intertrade (Iran) 10%, Türkiye Petrolleri Anonim Ortaklığı (TPAO)(Turkey) (%19)
Key Quantities

Process Buildings 21,298 m²
Non-process Buildings 2,626 m²
LER Building 475 m²
Concrete Works 64,295 m³
Structural Steel 9,363 tons
Pipe Works 5,792 tons

Project Duration

Start Date 07.02.2014
Finish Date 01.07.2018
Duration 54 Months

Location

Tbilisi, Georgia
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UNIQUE CHALLENGES

The Project sites are located remotely, requiring ENKA to set up pioneer camps to accommodate the project personnel and construction equipment while construction of access roads and carrying out early civil works.

CSG-1 site is a large, flat, straight sided pastoral field with heavy, loamy clay soil that is susceptible to seasonal flooding. CSG-2 site is located west of Lake Tsalka at an altitude of approximately 1,700 m above sea level. The AREA 81 site is located in a valley close to the Georgia – Turkey border. CSG-2 and AREA 81 locations have cold winters with snow cover for about 90 days, long mild summers and moderately high rainfall. Construction works are scheduled carefully considering the seasonal challenges and winterization measures are allowed and planned as required for an uninterrupted execution.

Through carefully prepared management plans and method statements, ENKA shall ensure minimum disruption to the wild life, environment and communities surrounding the project locations. Temporary works areas shall be reinstated to near original condition upon completion of construction.

ENKA SCOPE OF SERVICES

ENKA’s scope comprises of all related early civil works and construction of two compressor stations (CSG-1 and CSG- 2) and a pressure reduction and metering station (AREA 81) at three different locations. The scope also includes the construction of a 15km Access Road from the existing Millenium Highway to CSG-2 and brownfield modifications within the existing facilities of the SCP Pipeline.

CSG-1 will consist of a pig traps capable of launching and receiving 48” pipeline integrity gauges (PIG), four gas turbine driven compressors (21.6 MW) and two gas turbine generators (4.5 MW). The a portion of the gas received from Azerbaijan will be filtered and heated to be used as fuel gas for the compressor turbines and Gas turbine generators and the rest will be compressed up to 50 barg to be exported into the SCPX Pipeline. The Georgian Offtake is also located at the MS-72 facility that is adjacent to CSG-1. The facility also in an 80 m high-pressure vent stack in an emergency and for maintenance. ENKA scope of work includes erection of 8 process buildings, a gate house and installation and pre-commissioning of piping, E&I, Telecomms and all process equipment.

CSG-2 will consist of four gas turbine driven compressors (20.4 MW) and three gas turbine generators (4.5 MW), after-coolers, a high pressure vent stack in emergency and for maintenance and, two storage tanks for storing diesel and potable water. CSG-2 is located after the SCPX Pipeline combines with the existing SCP Pipeline therefore does not include pig launchers/receivers. ENKA scope of work includes erection of 10 process buildings, installation and pre-commissioning piping, E&I, Telecomms and all process equipment and construction of a gate house and an accommodation building for operations phase.

AREA 81 will be an extension to the existing SCP PRMS facility, known as Area 80. It will consist of four water bath heaters and a pig launcher that will connect to the Trans-Anatolian Natural Gas Pipeline (TANAP). Once completed AREA 81 will merge with the existing AREA 80 Facility.

SIGNIFICANT FEATURES AND ACCOMPLISHMENT
  • 6,5 million man-hours without a lost time incident (as of November 2016).
  • Project shall increase gas supply and energy security to European markets through the opening of a new southern gas corridor
  • Highest safety, quality and environmental standards are being utilized for this signature project
  • 70% local content.

Gallery

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