DLB NorCE ENDEAVOUR - Build To Operations
The DLB NorCE ENDEAVOUR is a marine construction barge operated by NorCE Offshore. The barge is registered under Panama Flag Registry and constructed in accordance with plans approved to ABS Rule(s) and the following notations; A1, BARGE, (M), HAB, AMCC, CRC, ES, POT, RCM (FIRE). The barge is also equipped with eight point mooring systems. Pipelay equipment onboard consists of eight stations feeding the main pipelay firing line. The pipe handling system is capable of handling up to 48” diameter pipes. Tension capacity is 150 metric tonnes (mT). The vessel is equipped with 1100 mT capacity revolving tub crane mounted at the stern.

NorCE Offshore engaged OCS to provide the following services:
Development of the Build To Operations manual for the DLB NorCE ENDEAVOUR
Development of the Pipelay Standard Operation Procedures
Tracking and Closure of ABS Class And Flag Statutory Requirements During Barge Construction
 
NuCoastal Bua-Ban & Songkhla Field Development
Working with EOCP, OCS provided the installation management, engineering and planning for Bua-Ban & Songkhla Field Development. The scope of work for installation involves a wellhead platform (SWHP) and process platform (SPP) at Bua Ban, 6” x 4km concrete coated subsea pipeline from Songhkla “A” to Songkhla “B” (water depth 24m) and two subsea PLEM at each end of the laid pipeline. All installation works were carried out using EOCP construction barge “Lewek Champion”.

Detailed installation engineering for installation of two jackets & two topsides (SWHP & SPP platform), 1 no. x 6” x 4km subsea pipeline, 2 nos. Subsea PLEMS and subsea tie-ins
Interfacing with Client and its Subcontractors
Install two sub-surface four-legged interconnecting platform (wellhead platform/SWHP and process platform/SPP)
SWHP & SPP Topsides installation
Engineering & installation of 36” piles with Lynx connector with no offshore welding works on main piles
Installation of two 6” risers
Installation of miscellaneous structures (skid beam, ITS skid, flare boom & bridges)
 
Pile Installation with Lynx Connector
Topside Lift
   
Jacket lift
ITS Skid Installation
Origin Energy - Yolla Mid Life Enhancement (MLE) Project
Working with Origin Energy, OCS provided the following work scope:
In conjunction with WorleyParsons (FEED contractor), develop detail engineering procedures & design any required installation aids (bumpers, guides, etc) for the lifting and installation of accommodation & utilities modules and the rig grillage
Check the engineering & supervise the loading & unloading of the accommodation and utilities modules & rig grillage (onto and from the cargo ship)
Supervise all heavy lifting & positioning operations offshore for the modules & rig grillage installation
Check the suitability of various port in Australia/Tasmania for loading & unloading the modules and rig grillage onto the AHT
Engineer, procure & supervise the transport & installation of the pre-laid mooring systems.
Engineer the Yolla site pre-laid mooring system, in particular, any connect/disconnect mechanism to maximize the connect/disconnect weather limits and minimize weather downtime for the barge operation
Provide Weather Management Plan which clearly states the required secure operation time for site abandonment decision making
Perform feasibility study for the use of RAR (Rig Anchor Release) as a quick anchor release mechanism
Specify and assist in securing the necessary marine vessel
Optimise the use of all the required marine vessels and any required onshore support bases for the transport & installation scope, including the selection of dry tow for the transport of the barge.
Kangean Energy Indonesia Limited - TSB Development Project
Construction Engineering and Management
Tow/ stability analysis and sea fastening design of riser base, manifold and hot tap protection.
Installation engineering of above structures
Pipeline Installation Engineering included:
 
Static and Dynamic Pipelay Analysis
Abandonment and Recovery Analysis
Start-Up and Lay down Analysis
Weld Repair Analysis
Local Buckling Checks
Flowline and umbilical installation engineering
Pipe haul tow/stability analysis and sea fastening design
 
Kangean Energy Indonesia Limited -
TSB Development Project
Oceanic 5000 – Build To Operations
The DLV Oceanic 5000 is a multipurpose marine construction vessel operated by Oceanic Marine Contractors. The vessel is DP2 classed and is also equipped with a 10 point mooring system. Pipelay equipment onboard consists of two linepipe double jointing stations feeding the main pipelay firing line. The pipe handling system is capable of handling up to 60” diameter pipes. Tension capacity is 240 metric tonnes (mT). The vessel is equipped with a 4400 mT capacity revolving tub crane mounted at the stern.

Oceanic Marine Contractors engaged OCS to provide the following services:
Development of the Build To Operations manual for the Oceanic 5000
Development of the DP Pipelay Trial procedures
Assessment of the DP capability for construction
Development of the Stinger Management procedure
Vessel preparation
Oceanic 5000 – Bow
Oceanic 5000 – Aft
Oceanic 5000 – Top View
M3nergy FSO for JDA B-17 Field Development Project
M3nergy JDA Sdn Bhd (M3nergy) awarded Franklin Offshore International Pte Ltd (FOI) the contract for the transport and offshore installation of the Puteri Songkhla FSO with its mooring and flexible riser. FOI engaged OCS to provide field engineering and construction engineering for the following work scope:

Installation of pile anchors, mooring chains including pre-tensioning of mooring lines.
The external turret mooring system consists of a 6x1 mooring chain configuration.
Hook-up of mooring chains to the FSO.
Installation and hook-up of riser to the FSO including leak test.
The leak test of the flexible riser was performed by OCS.
The installation vessel used was the Smit Borneo.
Mooring Chain Installation
Tensioning Up of FSO Mooring
Leak Testing in Progress
     
Mooring Pipe Upending
Flexible Riser Installation
Hess Indonesia Pangkah Engineering and Project Management
Provide Engineering and Project Management for the following work scope (site location Ujung Pangkah, offshore Gresik) :
Detail engineering for three Flowlines (approximately 5.5 km long each)– 16” Gas line, 12” Liquid Line and 6” Gas Lift line.
From WHP-A (existing) to new WHP-B.
Management of pipeline coating for FBE, Neoprene and concrete weight coat.
Construction Engineering for the Transportation and Installation of the three Flowlines and WHP-B platform.
Transportation and Installation of three Flowlines (including post trenching burial, pigging and hydrotesting, dewatering, drying and nitrogen packing).
Transportation of WHP-B platform comprising one 370mT, eight-legged jacket, three section piles and 1500mT Topside.
Installation of WHP-B platform comprising one 370mT, eight-legged jacket, three section piles and 1500mT Topside.
 
WHP-B Jacket Piling Installation
WHP-B Jacket Riser Guard Installation
WHP-A 16in Stalk On Riser 2
     
HLV Moving Closer to Jacket
WHP-B Platform Complete
Star Petroleum Kakap Field Redevelopment

Working with PT Timas OCS provided the installation management, engineering and planning; including vessel selection, chartering and offshore execution for redevelopment work in the Kakap field for Star Petroleum. Work comprised 10” and 6” infield pipelines, risers and tie ins and subsea umbilical installation with associated I tubes and subsea completions in 95 meter water depth at Kakap Field, Indonesia.
Scope of work Summary
Detailed installation engineering for installation of the subsea pipelines, platform risers and I tubes and subsea umbilicals.
Chartering of pipelay installation vessel and dive support vessel.
Prefabrication and offshore installation.
Pipeline pre-commissioning using in-house personnel and equipment.
Pipeline welding using Autowelding
Pipelay

I- tube Installation in rough weather
     
Riser clamps/subsea tie in/umbilical installation
Pigging preparation using OCS in-house equipment
Lewek Champion in action
Conoco Phillips North Belut Subsea Cable Installation and Project Management

Working with PT Timas OCS provided the installation management, engineering and planning; including vessel selection, chartering and offshore execution for Conoco Phillips North Belut CPP to WHP-C Subsea Cable.(site location North Belut Field, Natuna Sea).
Scope of work Summary
Detailed installation engineering for installation of the subsea cable between North Belut CPP and WHP-C platforms.
Interfacing with Client and its Subcontractors PTMI, PTTI and Sarku maintaining a strict installation window.
Commissioning of the construction of a specifically designed hub driven spooler with constant tension designed to handle ten metre diameter reels.
Construction Engineering for the Transportation and Installation of the Cable.

Chartering of and rig up of installation vessel Seacor Canyon with trenching spread.

Transportation of the Cable from its fabrication yard in Batam to site to Singapore and rig up.

Installation of the Cable between the existing facilities.

Trenching of cable to prescribed depth.

Testing of the completed cable.

Complete offshore execution was done without incident and ahead of schedule ensuring a positive outcome for all parties.
Overboarding Cable
Cable Handling

ConocoPhillips North Belut Bridge Engineering and Project Management

OCS provided the installation management, engineering and planning; including vessel selection, chartering and offshore execution for
Conocophillips North Belut CPP Connecting Bridge Installation (site location North Belut Field, Natuna Sea).

Detailed installation engineering for installation of the CPP Connecting Bridge between the North Belut CPP and WHP-D platforms.
Interfacing with Client and its Subcontractors PTMI, PTTI, Saipem and Sarku maintaining a strict installation window.
Construction Engineering for the Transportation and Installation of the Bridge.
Transportation of the Bridge from its fabrication yard in Batam to site in Natuna.
Installation of the Bridge between the existing facilities.

Complete offshore execution was done without incident and ahead of schedule ensuring a positive outcome for all parties.

 
Bridge on Heavy Lift Trailers Towing to Quayside
Lampson Crane Loading Out Bridge on 4th June
Bridge Landing on POE 2502
     
Bridge in Final Location
Bridge in Final Location
Bridge Clear of the Material Barge
     
WHP‐D End Stabbed in Ffinal Postion
Bridge in Position between CPP and WHP‐D
Aerial Photo of Completed Installation

Pipe Lay Systems on PL1

POE-PL1 is a pipe lay barge with a fixed truss stinger. The same was modified and strengthened to be used for the Serica project to lay the 14” pipeline at a maximum depth of 55m. The modifications carried out were :

Stinger and A Frame strengthening: the stinger was a 2D plane truss which was not sufficient and user friendly for the purpose. Therefore a 3D truss stinger was conceptualized, designed and fabricated. The A-Frame support of the stinger was also re designed and strengthened to suit the excess load. A unique method to change the stinger angle using the fixed length pennants but different attachment points on the hook on the A Frame was conceptualized, designed and fabricated, this proved extremely efficient offshore since changing the stinger angle took very less time. The photos of the modified stinger and A-Frame and the hook connection are given.

Ready rack and monorails: The barge did not have a ready rack and the loading onto the pipe ramp rollers was done by the crawler crane which was very weather sensitive. A ready rack was designed and fabricated such that five pipes could be stored at the pipe roller elevation and could be loaded onto the rollers. A unique way of loading on to the pipe rollers by using a monorail was conceptualized, design and fabricated. This proved extremely efficient offshore since it was very less weather dependent and the speed of loading the pipe onto the rollers was very high there by reducing the actual time required to lay each joint.

Stinger hitch: The stinger hitch on the barge was re designed and strengthened. An offshore friendly catcher arrangement was fabricated at the hitch location as a contingency in case the stinger has to be taken out and re instated offshore.


Modification Analysis Report was issued covering :
Brief description of the work carried out
1. Strengthening of ready rack
2. Strengthening of monorails
3. Strengthening of pipe ramp supports below ready rack
4. Strengthening of the stinger and A Frame (includes checking of pennants)
Loadings
The stresses / stress ratios in the members
Photographs of the strengthening performed
STAAD input/ output of all the structural analysis.
 
Hook to Adjust Stinger Angle
Stinger Modified
Stinger A Frame
     
Ready Rack
Monorail Ready Rack -Stern Side
Monorail Ready Rack- Bow Side

Asia Petroleum Development (APD) - Glagah Kambuna Field Development Project

OCS was commissioned by the main contractor PT Timas to perform the construction engineering, equipment preparation and execution supervision for the installation of a 42 km 14” gas export pipeline from the Kambuna platform offshore North Sumatera to a landfall Northeast of Medan.

Salient features of the project included.
5 km beach approach.
Duplex line pipe in the platform approach area.
Pre and Post trenching of 13 km of the pipeline to a cover of 2 metres.
Pre-commissioning of pipeline.
Topsides installation and Hook up.
Starting with basically a clean sheet OCS designed and supervised the rig up and the operation of the following construction spreads.
Pre-trenching spud barge outfitted with Caterpillar 375 excavators which completed 5.0 kilometres of trenching, beach pull support, onshore tie-in and backfilling in duration of 90 days.
Shallow water pipelay barge PL1 which had a peak layrate of 151 joints per day and an average of 110 with a spread cost under 100,000 per day.
Pull barge rigged with linear winch and 5000 metres of 2.5” cable for a 5 km beach pull from the PL1.
Trenching equipment for 8.5 kms of post burial work.
Deck installation and hook up equipment.
The job was a technical and financial success for both contractor and client. Client references can be provided on request.
Deck Installation I
Deck Installation II
Pipelay I
     
Pipelay II
Pipelay III
Pipelay IV
     
Pipelay V
Pipeline Post Trenching
Pull Barge
     
Pre-Trenching Barge