Coiled-Tubing-Cleanout-Operation_p01-18.pdf

tubing

1. Presentation Title (acronym) ;
Division – Name/OPU/HCU/BU (acronym) ;
Name of Presenter ©Petroliam Nasional Berhad (PETRONAS) 2014 1
© 2014 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.
Coiled Tubing Scale Cleanout
Operation

2. Presentation Title (acronym) ;
Division – Name/OPU/HCU/BU (acronym) ;
Name of Presenter ©Petroliam Nasional Berhad (PETRONAS) 2014 2
•The CT is a continuous length of steel or composite tubing that is supplied
spooled on a large reel.
•The CT unit is composed of a reel with the CT, an injector, control console,
power supply and well-control stack.
• CT is used for intervention in oil and gas wells and sometimes as
production tubing in depleted wells.
Coiled Tubing

3. Presentation Title (acronym) ;
Division – Name/OPU/HCU/BU (acronym) ;
Name of Presenter ©Petroliam Nasional Berhad (PETRONAS) 2014 3
•Steel pipe 1” OD to 3.5” OD
•Yield strengths of 70,000, 80,000, 90,000, 100,000 psi
•Relatively thin wall
•Finite life due to fatigue cycles (bending)
Tubing

4. Presentation Title (acronym) ;
Division – Name/OPU/HCU/BU (acronym) ;
Name of Presenter ©Petroliam Nasional Berhad (PETRONAS) 2014 4
Basic CT unit comprises:
–Injector head
–CT reel
–Power pack
–Control cabin
–Pressure control equipment(PCE)
Basic Equipment Package

5. Presentation Title (acronym) ;
Division – Name/OPU/HCU/BU (acronym) ;
Name of Presenter ©Petroliam Nasional Berhad (PETRONAS) 2014 5
Injector Head
•Hydraulically powered
counter rotating chains
•Gripper blocks mounted in
chain assembly
•Injector designation based
on maximum pull
capability, e.g 30K can pull
30,000 pounds

6. Presentation Title (acronym) ;
Division – Name/OPU/HCU/BU (acronym) ;
Name of Presenter ©Petroliam Nasional Berhad (PETRONAS) 2014 6
Typical Injector Head

7. Presentation Title (acronym) ;
Division – Name/OPU/HCU/BU (acronym) ;
Name of Presenter ©Petroliam Nasional Berhad (PETRONAS) 2014 7
Most injector heads have two sets of opposing endless chains
•Series of gripper blocks mounted on each chain
•Gripping profile of each suits a specific tubing size
Injector Head Chain Assembly

8. Presentation Title (acronym) ;
Division – Name/OPU/HCU/BU (acronym) ;
Name of Presenter ©Petroliam Nasional Berhad (PETRONAS) 2014 8
Injector Head Chain Assembly

9. Presentation Title (acronym) ;
Division – Name/OPU/HCU/BU (acronym) ;
Name of Presenter ©Petroliam Nasional Berhad (PETRONAS) 2014 9
CT Reel
•Used to store tubing
•Large radius for best tubing life
•Level wind assembly to wrap
tubing on and off reel

10. Presentation Title (acronym) ;
Division – Name/OPU/HCU/BU (acronym) ;
Name of Presenter ©Petroliam Nasional Berhad (PETRONAS) 2014 10
Typical reel components:
–Reel drum (1)
–Reel drive system (2)
–Levelwind assembly (3)
–Lubrication system (4)
–Depth counter (5)
CT Reel
1
2
3
4
5

11. Presentation Title (acronym) ;
Division – Name/OPU/HCU/BU (acronym) ;
Name of Presenter ©Petroliam Nasional Berhad (PETRONAS) 2014 11
Hydraulic Power Units are the main driving components of hydraulic systems.
Consisting mainly of a motor, a reservoir and a hydraulic pump, these units
can generate a tremendous amount of power to drive most any kind of
hydraulic ram.
Power Pack

12. Presentation Title (acronym) ;
Division – Name/OPU/HCU/BU (acronym) ;
Name of Presenter ©Petroliam Nasional Berhad (PETRONAS) 2014 12
Control Cabin
Primary control center for the CT
Unit
–CT instrument & controls
–BOP Control
–Monitoring Equipment and
operations

13. Presentation Title (acronym) ;
Division – Name/OPU/HCU/BU (acronym) ;
Name of Presenter ©Petroliam Nasional Berhad (PETRONAS) 2014 13
CTU Instruments and Controls
Primary instruments and controls
Weight indicator, circulating and wellhead pressures
Secondary instruments and controls
Depth/speed indicator, chain tensioner pressures, stripper
system pressure
Support instruments and controls
drive system pressures, BOP system pressure,

14. Presentation Title (acronym) ;
Division – Name/OPU/HCU/BU (acronym) ;
Name of Presenter ©Petroliam Nasional Berhad (PETRONAS) 2014 14
Consists of two Main Parts
•Blowout Preventer (Secondary PCE)
•Stripper Packer (Primary PCE)
Accessories
•Hydraulic quick latches
•Lubricator risers
•Adapter flanges
•Crossovers
•Flow tees
•In-situ test subs
CT Pressure Control Equipment

15. Presentation Title (acronym) ;
Division – Name/OPU/HCU/BU (acronym) ;
Name of Presenter ©Petroliam Nasional Berhad (PETRONAS) 2014 15
CT BOP
CT Pressure Control Equipment

16. Presentation Title (acronym) ;
Division – Name/OPU/HCU/BU (acronym) ;
Name of Presenter ©Petroliam Nasional Berhad (PETRONAS) 2014 16
CT Stripper Packer (Packoff)
CT Pressure Control Equipment
•Installed above BOP and below
Injector Head.
•Hydraulic activation from
Control Cabin.
•Forms a dynamic seal around
CT as it moves in and out of the
well.
•Allows change of packing
elements without removing CT
from well.
•Energized by well pressure from
below.
•Additional packoff force
provided by hydraulic pressure.

17. Presentation Title (acronym) ;
Division – Name/OPU/HCU/BU (acronym) ;
Name of Presenter ©Petroliam Nasional Berhad (PETRONAS) 2014 17
CT BHA
CT Knuckle Joint
•Minimizes Curvature Effect Of CT
•Assist in traveling through
doglegs
•Sealed For Pressure Containment
•Load Rating Comparable To CT

18. Presentation Title (acronym) ;
Division – Name/OPU/HCU/BU (acronym) ;
Name of Presenter ©Petroliam Nasional Berhad (PETRONAS) 2014 18
CT BHA
CT Swivel
•Allows rotation to ease make up
problems
•Sealed for pressure containments
•High tensile capability
•Ports to lubricate bearing