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Introduction to Coiled Tubing

Module 02 – Coiled Tubing Equipment

Copyright 2009, NExT, All rights reserved

1

Contents

Types of units

Components of a Coiled Tubing Unit

- Hydraulic Power unit

- Control Cabin / Console

- Tubing Reel


- Tubing Reel

- Injector Head

- Well Control

- Lifting Equipment

Specialty items

Summary

2

The past – circa 1967


3

CTU – Paved Road


4

CTU Paved road mast - CT Express


5

CTU – Single Chassis


Bob-Tail CTU

6

CTU – Off Road Mobile Mast


Trailer mounted mast unit for arctic and desert operations 7

CTU – Skid Mounted


Skid mounted for land or offshore operations

8

CTU – Barge Mounted


Nigerian barge unitLake Maracaibo

9

CTU – Jacking Barge


Gulf of Mexico jacking barge

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Hydraulic Power unitHydraulic Power unit

Control Cabin / ConsoleControl Cabin / Console

Tubing ReelTubing Reel

Injector HeadInjector Head

Pressure controlPressure control

Coiled Tubing Unit Components


Pressure controlPressure control

Lifting EquipmentLifting Equipment

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Hydraulic power unit / Power Pack

� Diesel or electric motors

� Drive hydraulic pumps to power

individual systems

� Open/Closed loop systems

Accumulators for the BOPs


� Accumulators for the BOPs

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Control Cabins

Primary Control Center for the CT

unit

� CT Controls

� BOP Controls

Monitoring Recording equipment


� Monitoring Recording equipment

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Hydraulic unit controls

System gauges Principal gauges

EMERGENCY

STRIPPERBLEED

PRESSURE BLEEDSTRIPPER #2PRESSURE

INSIDE TRACTIONSUPPLY PRESSURE

CHARGEPRESSURE

PRIORITYPRESSURE

SYSTEMAIR PRESSURE

DEPTH SYSTEMBOP SYSTEMPRESSURE

INSIDE TRACTION

BOP PRESSURE STRIPPER #1PRESSURE

STRIPPER SYSTEMPRESSURE

STRIPPER SYSTEMPRESSURE

BLIND RAM NEUTRALSHEAR RAM

INSIDE TRACTIONPRESSURE DRAIN

OUTSIDE TENSIONINJECTOR

CLOSE OPEN

WELLHEAD PRESSURE CIRCULATING PRESSURE

TUBING WEIGHT INDICATOR


Injector head and spooling controls

EMERGENCYTRACTION SUPPLY

TOP TRACTION

MIDDLE TRACTION

BOTTOM TRACTION

STRIPPER#1

STRIPPER#2

STRIPPERPRESSURE ADJUST

INSIDE TRACTION

PRESSURE ADJUST

BOP SUPPLYON

OFF

CLOSE OPEN CLOSE OPEN

CLOSE OPEN CLOSE OPEN

BLIND RAM

RETRACT PACK

NEUTRAL

RETRACT PACK

NEUTRAL

PIPE RAM

SHEAR RAM

SLIP RAM

CLOSE OPEN

AUX BOP

BOP

REEL BRAKEPRESSURE

REEL CONTROLLEVELWINDARM

LEVELWINDOVERRIDE

REEL PRESSURE ADJUST

INJECTORPRESSURE ADJUST

INJECTORCONTROL

IN

OUT

ON OFF

ON OFFINJECTOR2 SPEED

HIGH LOW ON OFF

REEL BRAKE

ON OFF

ON OFF

INJECTOR TOPTRACTION CYL.

INJECTOR MIDDLETRACTION CYL.

INJECTOR BOTTOMTRACTION CYL.

INJECTOR CONTROLPILOT PRESSURE

INJECTOR MOTORPRESSURE

REEL PRESSURE

ENGINESTOP

EMERGENCYSTOP

AIR HORN

INJECTOR SLOWSPEED CONTROL

INJECTOR LUBE REEL LUBE

SchlumbergerDowell

THROTTLE

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Electrical over Hydraulic controls

Eliminate pressure risk

Eliminate wellbore fluid risk

No hydraulic leaks inside work area

Improved ergonomics (A/C and

noise)


noise)

Self diagnosis

Process control

All variables recorded

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Injector Head – Functions

� Injecting and retrieving the CT string (chain/drive system)

� Holding the CT string static (chains and braking system)

� Guiding the CT to the reel (gooseneck)

� Tension/compression measurement


� Tension/compression measurement (weight indicator)

� Depth/speed measurement (depth system sensor)

� Mounting place for primary pressure barrier (stripper)

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Chain System – Hydra-Rig

Typical chain system includes:

1

2


Typical chain system includes:

� Drive sprocket/system (1)

� Inside tensioners (2)

� Outside tensioners (3)

� Lower idling sprocket (4)

33

4

2

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Injector Chains - HydraRig

Chain link pins


Gripper blockRoller

bearing

Chain link plateand split pin

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Injector Chains - HydraRig


HR 480 Chain components - variable insert

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Injector Chains - DRECO


Blocks open Blocks closed

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Injector Head – Typical Specifications

HR 260 HR 440 HR 480 HR-560

Capacities

Min. tubing size 1 1-1/4 1-1/2 1-1/2

Max. tubing size 1-3/4 2-3/8 3-1/2 2-3/8

Max. pulling force

- open loop(lbf.) 40,000 40,000 80,000 60,000

- closed loop(lbf.) 60,000 60,000 100,000 60,000


- closed loop(lbf.) 60,000 60,000 100,000 60,000

Max. snubbing force (lbf.) 10,000 20,000 40,000 26,000

Max. running speed (fpm) 200 240 150 200

Dimensions

Length (in.) 53 55 64 55

Width (in.) 34 52 64 58

Height (in.) 65 80 109 89

Weight (lbm) 3,400 7,800 12,650 8,900

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Injector head Guide Arch - Gooseneck

API Recommendations

Tubing Size Radius

(in.) (in.)

1-1/4 48 to 72

1-1/2 48 to 72

1-3/4 72 to 96


1-3/4 72 to 96

2 72 to 96

2-3/8 90 to 120

2-7/8 90 to 120

3-1/2 96 to 120

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Injector head Weight Indicator Sensor

Front sensor Rear sensor


HR 480 dual weight indicator sensors

sensor

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CT Pipe Reel function

•Store the CT pipe

•Deploy and collect pipe as it’s run

in hole

•Measure pipe length and integrity

•Spool pipe evenly


•Spool pipe evenly

•Lubricate and coat pipe

•Allow pumping while tripping pipe

•Transport pipe

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CT Reel – Primary Components

Typical reel components:

� Reel drum (1)

� Reel drive system (2)

� Levelwind assembly (3)

3

5


� Levelwind assembly (3)

� Reel swivel and manifold

� Lubrication system (4)

� Depth counter (5)

1

2

4

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CT Reel Manifold detail


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CT Reel – Completion pipe spooler


Completion spool (3-1/2-in. CT) with custom built spooler27

CT Well Control Equipment

•Next Module


28

CT Specialty Equipment

•Jacking Frames

Used to support the injector head

without a crane

•Towers

Used to support long lubricator rig

ups


ups

•Lifting Frames

Used offshore on floating vessels

Motion compensator

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Summary

Fit for purpose and operational constraints

Main components

- Hydraulic Power unit




- Tubing Reel

- Injector Head

- Pressure control

- Lifting Equipment

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Questions?


31

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