installation of pipeline end manifold (plem) and subsea ... · pdf file2 pipeline end manifold...

Installation of Pipeline End Manifold (PLEM)

and Subsea Tie-In of Expansion Spools

Zamri B Ahmad Petroleum Management (PMU),

PETRONAS

© 2011 PETROLIAM NASIONAL BERHAD (PETRONAS) All rights reserved. No part of this document may be reproduced, stored in a retrieval system or transmitted in any form or by any means (electronic, mechanical, photocopying, recording or otherwise) without the permission of the copyright owner.

PETRONAS-PETRAD-INTSOK-CCOP

Deepwater Subsea Tie-Back Workshop 25 – 26th January 2011

• INTRODUCTION

• Background Information

• Scope of Presentation

• INSTALLATION PRELIMINARIES

• Pipeline End Manifold (PLEM)

• Expansion Spools

• Installation Barge

• Final Assembly

• INSTALLATION PROCEDURE

• Pipeline End Manifold (PLEM)

• Expansion Spools

• Final Assembly

• CONCLUSION

OUTLINE

1

Introduction Installation Preliminaries Installation Procedure Conclusion

2 2

Pipeline End Manifold (PLEM):

• commonly used for subsea manifold to tie-in of underwater pipelines.

• used to comingle 2 or more pipelines together and eliminate the

need for additional risers.

INTRODUCTION:

Background Information Introduction Installation Procedure Installation Preliminaries Conclusion

3

Introduction Installation Procedure Installation Preliminaries Conclusion

INTRODUCTION:

Background Information

4


INTRODUCTION:

Background Information

5 5

Installation of PLEM and expansion spools:

• require great precision

• sensitive to weather conditions

• high installation cost

INTRODUCTION:

Background Information Introduction Installation Procedure Installation Preliminaries Conclusion

1. Installation of PLEM.

2. Installation of 2 expansion spools.

6

INTRODUCTION:

Scope of Presentation

CPP

PLEM

MOPU 1

MOPU 2

10” 6km

16” 25km


Designed Weight: ~ 70 MT

Dimension: 14m x 6m

Water Depth: 114ft (43.9m)

7

INSTALLATION PRELIMINARIES:

Pipeline End Manifold (PLEM) Introduction Installation Procedure Installation Preliminaries Conclusion

8



Expansion Spool at Pipeline / PLEM Expansion Spool at PLEM / MOPU

16” diameter

Full Well Stream (FWS)

9


Expansion Spools Introduction Installation Procedure Installation Preliminaries Conclusion

10



DP DLB Lewek Champion

• 358 person accommodation

• 1 x 800MT main crane

• 2 x 30MT secondary crane

• Dynamic Positioning with 6 Azimuth thrusters (max thrust 378.7kN)

11


Installation Barge Introduction Installation Procedure Installation Preliminaries Conclusion

PLEM

Expansion

spool

Pipeline to CPP

MOPU Leg

Footing

Expansion

spool

12

For future

expansion


Final Assembly Introduction Installation Procedure Installation Preliminaries Conclusion

13

INSTALLATION PROCEDURE:

Pipeline End Manifold (PLEM)

PLEM

Pre-installation:

USBL

beacons


14



Barge setup for PLEM installation


15



PLEM footprint and debris survey.


Stage 2 Stage 1 Stage 3 16



Barge Set-Up for Pipeline /

PLEM Spool Installation

17



Pipeline on an A Frame

18


Expansion Spools

Lifting Riggings on Expansion Spool



Expansion Spools

Stage 2 Stage 1 Stage 3 19


20


Expansion Spools

Expansion spool tie-in to PLEM


SPOOL PLEM

21 +/- 300mm


Expansion Spools

2

Introduction Installation Procedure

1

Installation Preliminaries Conclusion

22


Expansion Spools

Expansion spool tie-in to pipeline


Flange Protector Drawings

23



Barge Set-Up for PLEM / MOPU

Spool Installation

24



25


Final Assembly Introduction Installation Procedure

PLEM

Expansion

spool

Pipeline to CPP

MOPU Leg

Footing

Expansion

spool

Installation Preliminaries Conclusion

26

Similar approach is used for deepwater installation.

However, the challenges are greater. Due to the depth;

• human divers are out of bound. Thus extensive use of ROVs

• high-accuracy beacons are needed for positioning.

• DP vessel are required as apposed to anchor handling.

CONCLUSION:


27

THANK YOU


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