1. The document discusses the installation of a Pipeline End Manifold (PLEM) and two expansion spools in shallow water. It outlines the preliminaries, procedures, and concludes with lessons for deepwater installations. 2. The installation preliminaries include positioning the 70MT PLEM, installing the two expansion spools between the PLEM and pipelines, and using an installation barge equipped with cranes. 3. The installation procedure involves surveying the site, positioning the PLEM using cranes, and connecting the expansion spools to the PLEM and pipelines using stages while maintaining tolerances of +/- 300mm. Precision and weather conditions are critical challenges.

1. 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

2. • 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

3. 22
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 ProcedureInstallation Preliminaries Conclusion

4. 3
Introduction Installation ProcedureInstallation Preliminaries Conclusion
INTRODUCTION:
Background Information

5. 4
Introduction Installation ProcedureInstallation Preliminaries Conclusion
INTRODUCTION:
Background Information

6. 55
Installation of PLEM and expansion spools:
• require great precision
• sensitive to weather conditions
• high installation cost
INTRODUCTION:
Background Information
Introduction Installation ProcedureInstallation Preliminaries Conclusion

7. 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
Introduction Installation ProcedureInstallation Preliminaries Conclusion

8.  Designed Weight: ~ 70 MT
 Dimension: 14m x 6m
 Water Depth: 114ft (43.9m)
7
INSTALLATION PRELIMINARIES:
Pipeline End Manifold (PLEM)
Introduction Installation ProcedureInstallation Preliminaries Conclusion

9. 8
INSTALLATION PRELIMINARIES:
Pipeline End Manifold (PLEM)
Introduction Installation ProcedureInstallation Preliminaries Conclusion

10. Expansion Spool at Pipeline / PLEM Expansion Spool at PLEM / MOPU
 16” diameter
 Full Well Stream (FWS)
9
INSTALLATION PRELIMINARIES:
Expansion Spools
Introduction Installation ProcedureInstallation Preliminaries Conclusion

11. 10
INSTALLATION PRELIMINARIES:
Expansion Spools
Introduction Installation ProcedureInstallation Preliminaries Conclusion

12. 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 PRELIMINARIES:
Installation Barge
Introduction Installation ProcedureInstallation Preliminaries Conclusion

13. PLEM
Expansion
spool
Pipeline to CPP
MOPU Leg
Footing
Expansion
spool
12
For future
expansion
INSTALLATION PRELIMINARIES:
Final Assembly
Introduction Installation ProcedureInstallation Preliminaries Conclusion

14. 13
INSTALLATION PROCEDURE:
Pipeline End Manifold (PLEM)
PLEM
Pre-installation:
USBL
beacons
Introduction Installation ProcedureInstallation Preliminaries Conclusion

15. 14
INSTALLATION PROCEDURE:
Pipeline End Manifold (PLEM)
Barge setup for PLEM installation
Introduction Installation ProcedureInstallation Preliminaries Conclusion

16. 15
INSTALLATION PROCEDURE:
Pipeline End Manifold (PLEM)
PLEM footprint and debris survey.
Introduction Installation ProcedureInstallation Preliminaries Conclusion

17. Stage 2Stage 1 Stage 3 16
INSTALLATION PROCEDURE:
Pipeline End Manifold (PLEM)
Introduction Installation ProcedureInstallation Preliminaries Conclusion

18. Barge Set-Up for Pipeline /
PLEM Spool Installation
17
INSTALLATION PROCEDURE:
Expansion Spools
Introduction Installation ProcedureInstallation Preliminaries Conclusion

19. Pipeline on an A Frame
18
INSTALLATION PROCEDURE:
Expansion Spools
Lifting Riggings on Expansion Spool
Introduction Installation ProcedureInstallation Preliminaries Conclusion

20. INSTALLATION PROCEDURE:
Expansion Spools
Stage 2Stage 1 Stage 3 19
Introduction Installation ProcedureInstallation Preliminaries Conclusion

21. 20
INSTALLATION PROCEDURE:
Expansion Spools
Expansion spool tie-in to PLEM
Introduction Installation ProcedureInstallation Preliminaries Conclusion

22. SPOOL PLEM
21
+/- 300mm
INSTALLATION PROCEDURE:
Expansion Spools
2
Introduction Installation Procedure
1
Installation Preliminaries Conclusion

23. 22
INSTALLATION PROCEDURE:
Expansion Spools
Expansion spool tie-in to pipeline
Introduction Installation ProcedureInstallation Preliminaries Conclusion

24. Flange Protector Drawings
23
INSTALLATION PROCEDURE:
Expansion Spools
Introduction Installation ProcedureInstallation Preliminaries Conclusion

25. Barge Set-Up for PLEM / MOPU
Spool Installation
24
INSTALLATION PROCEDURE:
Expansion Spools
Introduction Installation ProcedureInstallation Preliminaries Conclusion

26. 25
INSTALLATION PROCEDURE:
Final Assembly
Introduction Installation Procedure
PLEM
Expansion
spool
Pipeline to CPP
MOPU Leg
Footing
Expansion
spool
Installation Preliminaries Conclusion

27. 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:
Introduction Installation ProcedureInstallation Preliminaries Conclusion

28. 27
THANK YOU
Introduction Installation ProcedureInstallation Preliminaries Conclusion