InterMoor Mark Prentice

Inter-M®PULSE Mooring Line Tension Monitoring

Mark Prentice Product Development Manager, InterMoor Ltd.

February 2013

Agenda • Mooring Line Tension Monitoring

• Inter-M® H-Links & Swivels

• Inter-M® H-Links Reference List

• Inter-M® Pulse Components

• Inter-M® Pulse Typical System Proposal

• Acoustic Real-Time Monitoring System

• Acoustic Modem/Receivers

• Inter-M® Pulse Sea Trials

• Inter-M® Pulse ROV Sea Trial

• Key Benefits

Mooring Line Tension Monitoring

According to the Floating production system (JIP FPS mooring integrity) Health and Safety Executive 2006 Report 444:

• 50% of units in the North Sea cannot monitor line tensions in real-time • 33% of units cannot measure offsets from the no-load equilibrium position

• 78% of units do not have line failure alarms

• 67% of units do not have mooring line spares available

• 50% of units cannot adjust line lengths.

Long Term Mooring (LTM) Connectors:

• For over 20 years InterMoor have been manufacturing and installing H-Link connectors.

• InterMoor have supplied over 2000 such units globally.

• Class Approved and designed to connect chains & ropes of different sizes together .

• Installed in some of the harshest waters in the world for over 25 years.

• Provides a long term solution to mooring connections.

Inter-M® H-Links & Swivels

Inter-M® H-Links – Reference List • Ocean Confidence • MadDog • Red Hawk • ATP Rowan Midland • Thunderhorse • Independence Hub • Tahiti • BlindFaith • Balmoral FPV • Triton FPSO • Kikeh • Mirage • ThunderHawk • Tombua Landana • Anasuria FPSO • Exxon Balder • Oxy Petroleum FPSO • Chevron Jack St Malo • Technip Lucius • Williams Gulfstar1 • Technip Heidelberg

600t MBL

2600t MBL

Acoustically linked / Hardwired

H-Link Chain Connection

Battery and load cell housing

The Inter-M® Pulse

The Inter-M® Pulse

Typical System Proposal

Inter-M® Pulse

Rig Supplied Emergency Power

Graphical user interface:

• Raise alarm when a mooring line fails

• Monitor performance of mooring lines

• Monitor mooring cable creep

• Underwater cable free acoustic communication

• Ultra-low power design to extend the battery life and prolong service.

Acoustic Real-time Monitoring System

Acoustic Modem/Receivers

• Modem is proven technology with noise rejection capabilities as a basic feature.

• Using acoustic wave propagation through

the water. • Pulse have 10 years experience with these

modems. • Located at the end of both transmitter

and receiver.

• 2 modems on the Inter-M®Pulse and 1 – 3 modems on the platform.

Acoustic receivers on platform

Acoustic modem on Inter-M®Pulse

Inter-M® Pulse Sea Trials To ensure test the technology of the Inter-M® Pulse , a 76mm (800T MBL) unit was installed on the Ocean Nomad Semisubmersible in the North Sea during the winter of 2011/12 for a six month drilling campaign.

Mooring System - Chain and fibre makeup

- Installed at the fibre/shackle connection.

Trial Location - Everest 22/10a

- Operator was BG.

Conditions & Results - Sea-states of around 12m

- Inter-M® Pulse sent accurate line tensions and inclination readings to the control room.

Inter-M® Pulse Sea Trials The Inter-M® Pulse was installed over a stern roller.

The units are designed for MODU and/or FPSO installation.

After a successful installation, the unit was immediately operational and feeding line tensions and inclination readings to the surface.

The readings have since been verified and documented.

Inter-M® Pulse Sea Trials

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Date 05/07/12 09/07/12 13/07/12 17/07/12 21/07/12 26/07/12 30/07/12

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Inter-M® Pulse ROV Trial Recently, as part of a client requirement, a subsea trail was undertaken to ensure the Inter-M® Pulse could be used long-term in permanent mooring systems.

Mooring System - Chain and chain makeup

Trial Location -The Underwater Centre, Fort William, Scotland (ROV Centre)

Trial Results

-Inter-M® Pulse sent accurate line tensions and inclination readings to the control room and the logger/batteries were removed and replaced by the Neptune ROV.

Inter-M® Pulse

Key Benefits on a MODU & FPSO

• Full history of mooring line

• Acoustic data transmission

• On-demand data upload

• Traffic light alarm system

• Stern roller and/or ‘A’ Frame installation

• Suitable for moored FPSO and MODU

• Post-hurricane information system that saves

inspection time and costs.

Thank you