What is CT? ........................................................................................................... 1

Key Elements of a CT Unit .......................................................................................................... 1
Well Control Equipment ............................................................................................................... 3
CT Benefits ................................................................................................................................. 4
CT Field Applications................................................................................................................... 4

History ................................................................................................................... 5

CT Origin.................................................................................................................................... 5
Early CT Equipment.................................................................................................................... 5
Evolution of CT Equipment .......................................................................................................... 5

The Business ........................................................................................................ 9

Growth of the CT Service Fleet ................................................................................................... 9
New CT Markets/Field Applications ........................................................................................... 10
CT Service Providers ............................................................................................................... 10

The Tubing ........................................................................................................... 11

Raw Material for CT.................................................................................................................. 11
CT Manufacturing ..................................................................................................................... 11
CT Mechanical Performance .................................................................................................... 12
CT String Design ...................................................................................................................... 13
CT Inspection Tools .................................................................................................................. 14
Repairs and Splicing ................................................................................................................. 14
Addressing Offshore Weight and Space Limitations .................................................................... 15
Extending the CT Operating Envelope – Downhole Tractors .................................................... 15
Alternatives to Carbon Steel CT ................................................................................................ 16

Workover & Completion Applications ................................................................ 17

Common CT Workover Applications .......................................................................................... 17
Removing Sand or Fill from a Wellbore ..................................................................................... 17
Unloading a Well with Nitrogen.................................................................................................. 18
Fracturing/Acidizing a Formation ............................................................................................... 18

Drilling Applications ............................................................................................ 19

Non-Directional Wells ................................................................................................................ 19
Directional Wells ........................................................................................................................ 19
Wellbore Hydraulics and Drilling Fluids ..................................................................................... 20
Overbalanced CTD .................................................................................................................. 20
Underbalanced CTD ................................................................................................................ 21

Pipeline Applications .......................................................................................... 22

Land ......................................................................................................................................... 22
Offshore .................................................................................................................................... 22
Limitations ................................................................................................................................. 22
Overcoming Pipeline Drag Limitations ....................................................................................... 23

Permanent Installations ....................................................................................... 24

Offshore Flowlines .................................................................................................................... 24
Velocity Strings .......................................................................................................................... 25
Control Lines ............................................................................................................................ 25

Nomenclature ...................................................................................................... 26
2005 ICoTA Board Members............................................................................... 27
Membership Application ..................................................................................... 28

The ICoTA website contains a wealth of additional Coiled Tubing information,

including technical papers, the latest meeting notices, etc.

Please visit our website at:  www.ICoTA.com