20.0 Rig Assembled Conductor Platform

8/10/2019 20.0 Rig Assembled Conductor Platform

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Rig Assembled Conductor Platform (RACP)

DEA(e) 3Q06 Meeting, Milan



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Agenda - RACP

• Introduction

• Design principals

• Installation

• Features

• In closing



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UWG’s RACP:

• Rig Assembled Conductor Platform• Provides an offshore minimal facilities

installation

– 200 tonne total topside weight

• Metocean conditions constrained

– Installed in 20m water depth, 30m

designs prepared

• Avoids the use of heavy lift offshore crane

barge

– Can improve project logistics

• Uses a standard self-elevating MODU

Introduction



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Design principals

EL 0.0m

EL -20.0m

EL +10.0m

• Design principals:

– Install safely and efficiently

– Use the well Conductors as the

structural elements

– Install using a self elevating MODU,no crane barges to be required

– Site specific design analysis

– Modular elements – Low cost



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Installation

• UWG designed, manufactured and

installed the first RACP offshore Angola,

Morsa West location

• Commenced conceptual engineering Jan

2005

• Installation successfully completed (Dec.2005)

• No safety incidents

• 5 wells, 17m / 56ft MSL

• Topside structure 55T, manifold 11T

• ABS Certified class *A1 (offshore

hydrocarbon producing station)



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Drill top hole and run first

conductor to depth

3. Marine lift the Subsea Template

and suspend beneath MODU

port cantilever.

Installation contd.

4. Transfer Template to temporary

suspension beneath rotary table and

connect DP running tool. Capturefirst Conductor and run to mudline



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5. Drill the top hole and install

the remaining Conductors.

Machine cut the tops of

the conductors.

6. Jack up the MODU and transfer the

Topside module into position above

the conductors

Installation contd.



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7. Lower the Topside module and capture the

Conductors with the capture cones

8. Land the Topside

module on the no-go

rings. Make up

clamps etc.

Installation contd.



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Features

Self supporting

1 installedMudline

support

Design

available

up to 20m / 65ft up to 30m / 98ft

• Modular design

• Around half the cost of anequivalent jacket based

installation

• Can improve project

logistics

• Ease of decommission



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In closing

UWG’s RACP:

• provides a minimal facilities installation

• does not required an offshore heavy lift barge for

construction

• integrates with conventional drilled or driven conductor

installation

• requires site specific analysis to optimise conductor size

and grade

• is constructed from modular elements



www.uwg.co.uk

Contact:

[email protected]

Contact Details

20.0 Rig Assembled Conductor Platform

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