2009/11/2

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Presentation for Offshore Platform 

& Pipeline Installation

＜FIELD LAYOUT (PTTEP Arthit)＞

2009/11/2

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Location Map

EPC Work Distribution (TNS‐Singapore)1.Engineering (TNS & SOG) 2. Procurement (TNS & SOG)

4. Construction (K1 & K2)3. Fabrication by TNS(Bangpakon)

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INTRODUCTION

Offshore installation of oil and gas facilities consist of two major types, platform and pipeline installation.

This presentation describes the general aspects and essential points for platform and pipeline installation by NSEC’s DLB (KUROSHIO and KUROSHIO‐2)

CONTENTS

1. NSEC’S Derrick Lay Barge (DLB)1. NSEC S Derrick Lay Barge (DLB)

2. PLATFORM INSTALLATION

3 PIPELINE INSTALLATION3. PIPELINE INSTALLATION

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1. NSEC’s Derrick Lay Barge

KUROSHIO (K1) and KUROSHIO‐2 (K2)

<Kuroshio 2>

<Kuroshio>

<Kuroshio‐2>

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K1 & K2 Equipment

Kuroshio (K1) Kuroshio-II (K2)142m x 40m x 8 9m 140m x 34m x 9 5mSize 142m x 40m x 8.9m 140m x 34m x 9.5m

14,552 tons 10,254 tons25,346 tons 24,100 tons

254 men 266 menMain 2,268 MT 725 MT

No.1 Aux 726 MT 272 MT

Size

Crane Capacity

Gross Reg. TonnageDisplacementGalley

No.2 Aux 272 MT -Whip 72 MT 45 MT

68 MT x 1 150MT (75 MT x 2)Tensioner Capacity

Crane Capacity

Stinger Hitch

Derrick Crane

Tie‐Back Mode

Tensioner

DLB Kuroshio (K1)

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Stinger Hitch

Derrick CraneTensioner

DLB Kuroshio‐2 (K2)

Platform Installation0)  General Flow Chart of Platform Installation 1)  Transportation2)Jacket Lifting

Jacket Launching3)Jacket Upending4)Pile Installation5)Jacket Leveling6)Conductor Installation7)Deck Installation8)Others (Multi‐Hook Upending, Tie‐Back）

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Others : Platform Installation

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<Malaysia Project Platform>

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Jacket Installation Flow Chart 

< Jacket Installation Sequence >

Deck Installation Flow Chart 

< Deck Installation Sequence >

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1) Transportation by Cargo Barge & Tug Boat

• AA) Towing PlanSchedule/Route/ Storage Plan / Barge Size/ / g / g

• BB) Environmental Condition:  

Towing Route/Season Motion Criteria/Tug Boat Capacity 

• CC) Structure integrity, Seafastening & Barge StrengthTo perform Transportation Analysis (by SACS or MOSES)

• DD) Review from Installation point of view

Lifting and upending riggings to pre‐rigged.

< Transportation Layout Plan >

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< Transportation Layout Plan >

2) Jacket LiftingPlanning. 

• Lifting weight shall be less than crane capacityLifting weight shall be less than crane capacity.

(If not, jacket shall be launched)

・Lifting Mode/Hook shall be determined by lifting chart drawing. Clearance between Jacket and DLB (Min 2~3m).( )

• All lifting gear shall be designed with DAF, SKL, COG Shift, CF, Wgt.Cont. factors (subject to spec).

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Jacket Lifting Flow Chart

1) Sea bed survey by ROV.

2) Check weather condition (min 2days)2) Check weather condition (min 2days)

3) Alongside transportation barge with DLB.

4) Check all cargos / slings on barge.

5) Cut off seafastening.

6) Lift th J k t b d i k6) Lift up the Jacket by derrick crane.

< KUROSHIO‐1 (K1) Derrick Crane Lifting Chart >

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< Jacket Lifting by KUROSHIO‐1  >

< Jacket Lifting By KUROSHIO‐1 (2007 Total Indonesia, Peciko‐5 SWP‐F Jacket) >

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Jacket Launching• Launching is a installation method of heavy jacket which 

has the bigger lift weight than the derrick crane lifting h l d k hcapacity. Launching operation is sliding jacket into the sea 

by tilting the launching barge (3‐5 deg) with ballasting.    

• It is important to study the stability of jacket and barge, the jacket sliding, and the bottom clearance from seabed during launching operation.

• Tilt launching barge by ballasting Grease and wax must beTilt launching barge by ballasting. Grease and wax must be applied on skid beam so that the jacket will slide easily. 

< Jacket Layout Plan (2006, PTTEP Arthit APP Jacket >

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< Jacket Launching (2006, PTTEP Arthit APP Jacket >

< Jacket Launching (2006, PTTEP Arthit APP Jacket >

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< Jacket Layout Plan (2007, Total Indonesia Sisi‐Nubi MWPS Jacket >

<  Jacket Launching (2007, Total Indonesia Sisi‐Nubi MWPS Jacket >

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<  Jacket Launching (1 of 7), (2007, Total Indonesia Sisi‐Nubi MWPS Jacket >

< Jacket Launching (2 of 7), (2007, Total Indonesia Sisi‐Nubi MWPS Jacket >

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< Jacket Launching (3 of 7), (2007, Total Indonesia Sisi‐Nubi MWPS Jacket >

< Jacket Launching (4 of 7), (2007, Total Indonesia Sisi‐Nubi MWPS Jacket >

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< Jacket Launching (5 of 7), (2007, Total Indonesia Sisi‐Nubi MWPS Jacket >

< Jacket Launching (6 of 7), (2007, Total Indonesia Sisi‐Nubi MWPS Jacket >

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< Jacket Launching (7 of 7), (2007, Total Indonesia Sisi‐Nubi MWPS Jacket >

④ Jacket Upending 

• Lowering Jacket into the sea, Recover lifting sling, rig‐up upending sling onto crane hook at g, g p p g gnatural float condition, and upend jacket by winding up crane hook.

• Jacket (Pitch & Roll) stability shall be checked in advance by the analysis model considering th j k t lf i ht d it bthe jacket self weight and its buoyancy. 

• Jacket On bottom stability to confirm by analysis and weather forecast.

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< Jacket Upending Sequence >

< Jacket Upending >

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⑩Multi‐Hook Upending• One of the jacket upending methods.

• Multi‐hook upending is for the jacket withMulti hook upending is for the jacket with negative buoyancy at natural float condition ( Not enough buoyancy ). 

• It is important to check crane capacity and bottom clearance between seabed during upending operation. 

• Latest NSEC installation record;               Premier WLWP (2006) and Total Indonesia Peciko‐5 (2007)

< Multi‐Hook Upending (2007, Total Indonesia Peciko‐5, SWP‐F Jacket) >

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< Multi‐Hook Upending (2007, Total Indonesia Peciko‐5, SWP‐F Jacket) >

⑤ Pile Installation

• Pile installation shall be performed in d ith f ll iaccordance with followings:

1) [on bottom stability report] for P1 & P2 (except Skirt pile).

2) [Pile installation report] for lifting

3) [ Pile Driving analysis Report] for hammering3) [ Pile Driving analysis Report] for hammering

4) [ Welding & NDT procedure] for QC

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Skirt Pile Foundation5000ton Jacket  (W.D=140m)

Tokyo H.Office  Building   (Reference only)

Long Pile (80” x 100m)

Pile Gripper

< Pile Installation (2007, Total Indonesia Peciko‐5 Project) >

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Hammers owned by NSEC

• NSEC has Steam hammers and hydraulic hammershammers.

• Steam hammer; MRBS‐850, 1800, 3000, 2500SL, and 5000.

• Hydraulic hammer; MHU‐700T and 270T.

< Hammer (2004 Chevron MPF IIB Project) >

< Steam Hammer (MRBS‐3000)> < Hydraulic Hammer (MHU‐700T) >

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⑥ Jacket Leveling 

< Jacket Leveling >

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Conductor Pile Installation

< Conductor Installation >

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⑧ Deck Installation

• Lifting off from transportation barge and setting onto jacketonto jacket.

• The deck weight, derrick crane capacity, and working load of sling and shackle must be considered in the lifting study.

• Clearance check between deck structure and derrick crane boom d ring deck lifting andderrick crane boom during deck lifting and setting.

• Confirm deck levelness by level survey after deck setting.

< Deck Lifting (2007, Total Indonesia Sisi‐Nubi WPN2 Deck >

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< Deck Setting >

<2006, Premier WLWP Project> <2004, Chevron 2004 Project>

⑪ Tie‐Back Mode

• KUROSHIO(K1) derrick crane has the tie‐back d hi h i lifti itmode which can increase crane lifting capacity 

up to 2,268 MT with work radius 40m.

• Work restrictions during tie‐back mode (no crane revolving, strict weather limitations).

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< Deck layout Plan (2007, Total Indonesia Sisi‐Nubi MWPS Deck >

< Deck Lifting in Tie‐back Mode (2007, Total Indonesia Sisi‐Nubi MWPS Deck >

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Tie‐Back. Sheave block disconnect from Crane‐Frame and connect to A‐Frame 

A‐Frame

< Deck Lifting in Tie‐back Mode (2005, Malaysia TLO Charter, SSB E11K‐A, Module‐2) >

< Deck Installation by Float‐over (2001, Philippine, Malampaya Project) >

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Pipeline Installation

① Start‐up Operation(Deploying dead man anchor (DMA), Tension Test, Setting stinger)

② Normal Laying(Welding, NDT)

③③ Lay‐down Operation(Lay‐down pipeline, Recovering stinger)

Normal Pipelaying Method

KUROSHIO

PIPELINE

Water Depth (-)80m

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Normal Pipelay method

Tensioner 14”x 12m pipe weld

Piggy Back Pipelaying

2” Piggy Line (for Chemical )

Piggy Saddle

14” Main Gas Pipe

(for Chemical )

Piggy Back Layout

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Piggy Back Method

< Pipeline Normal Laying >

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What is Stinger ?• Stinger is additional support to reduce the pipe stress during pipe laying.  

• Stinger has some support rollers and pipeline will pass on the rollers.

• Stinger is consisted of the bulkhead steel tanks. Stinger angle can be adjusted by b ll i /d b ll i h kballasting/de‐ballasting the tanks.  

• It is important to pay continuous attention to maintain the stinger angle within the planed angle during pipe laying.

< Stinger (2003, Unit‐1 & 2) >

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<  Stinger Setting >

What is Tensioner ?• Tensioner is a DLB facility to pull and fix the pipeline. 

• Without applying tension to pipeline, the pipelineWithout applying tension to pipeline,  the pipeline might be buckling due to over bending stress. Therefore the designed tension shall be applied to pipeline to prevent from the buckling by pulling pipeline and shift forward of DLB.

• Usually bigger tension is required for heavy weight y gg q y gpipeline, with concrete coating and deeper water depth. 

• Tension control is important operation in pipeline installation.  

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< K1 Tensioner (2006, Premier WLWP Project) >

Crossing Sleeper Installation

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Detail of SPP Area / Crossing Sleeper Position

Scale: 350m (approx)

LastCrossing Sleeper

Tie-off Point

Check Points of Pipeline Installation

• Welding and Non destructive testing (NDT）• Eliminate welding defect

• Control tension

• Control stinger angle

• DLB movement by anchor relocation

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< Anchor Handling during Pipeline Installation >

Pipeline Buckling

• If loss the required tension,  the pipe might be buckling.• Pipeline Buckling is classified into Dry/Wet BucklingPipeline Buckling is classified into  Dry/Wet Buckling• Dry Buckling; No flooding into pipeline after buckling. 

The pipeline will be recovered, then cut the buckling portion and weld new pipe.

• Wed Buckling; Flooding into pipeline after buckling. The pipeline will be temporary stored onto seabed, dewatered kept in dry condition and recovered Pipedewatered, kept in dry condition and recovered. Pipe laying operation to be resumed by same procedure of dry buckling.

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Other Pipeline Technique

• Start‐up operation by tie‐off wire method 

• Automatic welding system (Mechanized welding ) for pipeline welding

Tie‐Off Wire

• Tie‐off wire is one of the start‐up methods of i l i th ti i i t d tpipe laying, the reaction wire is connected to 

existing jacket leg for pipe laying. 

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< Tie‐off Wire Start‐up >

Automatic Welding System(Mechanized Welding)

• The manual welding is normally used for sweet gas pipeline installation. however automatic 

ldi i d f h l l h i li biwelding is used for the long length pipeline, big outside diameter pipeline, and thick wall thickness pipeline.

• For gas sour service pipeline, copper backing plate can not be used.

• NSEC will use “CERAMIC” backing plate to use Automatic welding in 3H4A projectAutomatic welding in 3H4A project.    

• NSEC’s automatic welding system has “Automatic seam trackling system” which was used in SSWJ project (2006).

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Pipe Lay BargeS

Wire Feeder

Control Panel

溶接ヘッド

ｔ.1

Sｔ.4

Sｔ.3

Sｔ.2

Pipeline

GMAW Welding MachineMulti Torch Arc

Automatic Welding System

< Pipeline Automatic Welding System (2006, Indonesia SSWJ Project) >

< Automatic Ultrasonic Testing Machine (2005, Indonesia SSWJ Project) >

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Field Joint Coating Service

Others: Riser & Dogleg Installation

Riser LiftingDogleg

SPP Concrete Protector

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END