Experiences Marine intake and outfall pipelines

YEAR

PROJECT NAME
 & LOCATION

PRIME Contractor SCOPE OF WORK
Ongoing

GECOL- EPCI - Alkhalij 1850MW Power Plant Project
LIBYA

GEOCEAN

1) Intake and outfall installation:
• GRP pipelines large diameter intake out falls
• Water intake pipeline : 4x lines 3m OD 450mGRP including 4 intake head
• Injection line – chlorine : 4 lines offshore
• Water outfall pipeline : 4 lines 2.8m OD GRP – 2100m including diffusers

2) HFO import system Scope
• 2 x 1 800 m - 24’’ offshore Steel pipeline installation x 0.750’’ WT
• SPM installation: type CALM buoy (40 000 DWT) and flexible + PLEM Installation
• All lines to be buried construction of shore line protection, rock dumping, wave breaker
• water depth from 0 to - 60m LAT

Ongoing Undisclosed client Tahiti GEOCEAN

Offshore HDPE Intake Pipeline installation for seawater air conditioning - SWAC

Installation engineering
• Surveys
• Near shore Trenching with Geocean underwater excavator ABYSS
installation of seawater air conditioning hdpe intake pipeline up to 900m Water depth
2010

KONIAMBO NICKEL SAS (EK) EPCI KONIAMBO project

NEW CALEDONIA

GEOCEAN

Offshore HDPE outfall Pipeline installation

Installation engineering
• Surveys
• Near shore dredging
• Installation of HDPE outfall pipeline 6494m long from a battery limit on the shoreline to the approved discharge location in Passe Duroc, ending with a 60m diffuser of HDPE SDR21 DN710mm.
• The HDPE pipe was prefabricated with concrete weights to ensure its stability on the seabed.

2009

SONELGAZ EPCI - TERGA Power Plant Project

GEOCEAN

Offshore HDPE intake and outfall Pipeline with Intake head Installation

• Installation engineering
• Geophysical and geotechnical Surveys
• Trench excavation and backfilling
• Engineering Procurement and Installation of concrete weights (12 Tons each, 750 units)
• Engineering Procurement and Installation of the 5 x 750m HDPE 2000mm (80”) offshore pipelines
• Engineering Procurement and installation of 5 intake heads
2007

VALE INCO EPCI GORO Project

NEW CALEDONIA

GEOCEAN

Offshore HDPE outfall pipeline installation

• Installation engineering
• Surveys
• Near shore dredging
• Welding HDPE strings (1800 weld)
• Installation of concrete weights (3000 ea)
Offshore outfall pipelline installation21km 80cm
2008
AMENDIS EPCI  Rabat HDPE outfall installation
MAROCCO

J/V Somagec Geocean Etermar

Offshore HDPE outfall pipeline installation

• Installation engineering
• Surveys
• Near shore dredging
• Welding HDPE strings
• Installation of concrete weights
Offshore outfall pipelline installation 2150m - 2m OD
2007

AMENDIS EPCI – Tanger HDPE Sewage sealine installation

MAROCCO

J/V Somagec Geocean Etermar

Offshore HDPE Sewage sealine Pipeline

• Installation engineering, Surveys
• Near shore dredging
• Welding HDPE strings
• Installation of concrete weights
• Outfall
pipeline installation 2200m - 1.4m OD
2007

AMENDIS EPCI – Tetouan HDPE Sewage sealine installation

MAROCCO

J/V Somagec Geocean Etermar


Offshore HDPE Sewage sealine Pipeline
• Detailed engineering
• Management and follow-up of the complete project included: protective rock bund installation, trenching, weight collar fabrication and installation, cofferdam installation and back filling
• Storage and pipe preparation in river
• Connections between pipes, and installation on the seabed Pig launcher and diffuser protection bloc installation, stabilizer installation
• Offshore outfall pipelline installation 3100m1.2m OD
2006

SAGESS EPCI Lavalduc GRP Pipeline and Intake head installation

FRANCE
GEOCEAN

GRP Pipeline and Intake head installation in Brine water lake:
Design, stability and installation studies of the pipeline and intake head underwater tie in pipe to intake head + underwater valve skid
• 24”GRP pipe 230m long used to face corrosion & pressure
Dredging operations to remove a hard salt layer on the lake bed,
• Marine outfall pipelline installation on lake by launching from the shore and towing to its final location
2005

OTV EPCI – HDPE Sewage sealine LEBANON

GEOCEAN

HDPE Sewage pipeline installation:

• Installation engineering, Surveys

• Near shore dredging
• Welding HDPE strings
• Installation of concrete weights
Offshore outfall pipelline installation 600m 50cm OD
2004

OTID EPCI - Offshore HDPE Water intake for desalination plant

CYPRUS
GEOCEAN

Offshore HDPE intake pipeline and intake head Installation

• Installation engineering Geophysical and geotechnical Surveys
• Trench excavation and backfilling
• Engineering Procurement Construction and Installation of concrete weights
• Engineering Procurement Construction and Installation of the 3 x 1000m HDPE 1600mm offshore pipelines
• Engineering Procurement Construction and installation of 3 intake heads
2001

Kin Men Water Board EPCI - Offshore HDPE Drinking water sealine Kinmen island

TAIWAN
GEOCEAN

Offshore HDPE Drinking water sealine Installation:
• Installation engineering - Survey
• Trench excavation and backfilling
• Engineering Procurement Construction and Installation of concrete weights
• Engineering Procurement Construction and Installation of the 4500m HDPE 25cm pipeline
• Engineering Procurement Construction and installation of 3 intake heads
2001

Town of Ste Luce  EPCI – HDPE Sewage sealine
 Sainte Luce MARTINIQUE

GEOCEAN

Marine HDPE Sewage pipeline Installation:

• Installation engineering, Surveys
• Installation of the sealine 1600m of 25cm OD pipeline
2001

Town of Trinity  EPCI – HDPE Sewage sealine
 Sainte Luce MARTINIQUE

GEOCEAN

Marine HDPE Sewage pipeline Installation:

• Installation engineering, Surveys
• Installation of the sealine 2000m of 10” OD pipeline

 

 

PT GEOCEAN INDONESIA - ​www.geocean-indonesia.com / Wordlwide website: www.geocean.com
Offshore Oil & Gas Contractor
Plaza City View 4th Floor
Jl. Kemang Timur 22
Jakarta Selatan 12510 - INDONESIA
Phone: +62-21 718 2018, 718 2019 / ​Fax: +62-21 718 1988, 718 1989