CBT Well Intervention
Training course on Techniques and procedures for well control
during Well intervention and Workover activities.

Course with animations and audio on all main equipment and procedures for Well Intervention and Workover.

Training course for Well Intervention or Workover activities
and for IWCF certification on Well Intervention Pressure Control.

Main Index

1. INTRODUCTION
2. COMPLETION EQUIPMENT
3. WIRELINE
4. COILED TUBING
5. SNUBBING
6. PROCEDURES TO OPERATE UNDER SAFE CONDITIONS
7. WELL CONTROL PROCEDURES IN CASE OF A KICK
- APPENDIX A
- APPENDIX B

1. INTRODUCTION

WELL INTERVENTION ACTIVITIES
- Wireline
- Coiled tubing
- Snubbing

WELL COMPLETION
- Completion Equipment
- Types of completion
- Fluids and pressures in the well
- Completion fluid
- Packer fluid

WELL SAFETY AND BARRIERS
- Hydraulic and mechanical barriers
- Temporary and permanent barriers
- Barriers in different operating situations

2. COMPLETION EQUIPMENT

FLANGING OF THE WELL HEAD
- Tubing Spool
- Tubing Hanger

XMAS TREE
- Components
- Replacement of the Xmas Tree
- Checks and Tests

VALVES AND ACTUATORS
- Expanding Gate Seal Valve
- Floating Seal Valve
- Actuators
- ESD Control Unit

TUBING
PACKER
- Components
- Typology
- Setting and testing
- Stresses on the Packer

SAFETY VALVES
- Introduction
- SSCSV: Sub-surface Controlled Safety Valves
- SCSSV: Surface Controlled Sub-Surface Safety Valves

CIRCULATION/COMMUNICATION DEVICES
- Circulation Valve
- Ported Nipple

LANDING NIPPLES
- Generality
- Typology

OTHER COMPLETION EQUIPMENT
- Side Pocket Mandrels
- Hydrotrip, Catcher Sub
- Blast Joint (or Blast Nipple)
- Flow Coupling
- Polished Nipple
- Gas Lift Valve
- Telescopic (swivel) joint

EQUIPMENT USED IN DRILLING
- Blow Out Preventer
- Top Drive

3. WIRELINE

GENERALITY
- Slickline
- Electric Wireline
- Wireline Operations
- Light Duty and Heavy Duty Operations
- Wireline Equipment

SURFACE EQUIPMENT
- Lifting Equipment
- Adapter Flange
- Wireline BOP
- Lubricator Riser
- Stuffing Box
- Injection Nipple
- Safety Check Union (Ball Check Valve)
- Electric Wireline Equipment

RUNNING/PULLING EQUIPMENT
- Wireline Units
- Control Panel
- Wire line
- Reel and Counter Wheels

WORKING TOOLSTRING
- Rope Socket
- Stem
- Wireline Jars
- Knuckle Joints
- Calculation of the Toolstring Minimum Weight

EQUIPMENT FOR WIRELINE OPERATIONS
- Equipment for Routine Operations
- Equipment for Operations in the Tubing
- Equipment for Operations in the Casing

INSTALLATION AND TEST
- Checks and Installation
- Hydraulic Test and Operating Test

WIRELINE PROBLEMS
- Rupture of the Wire at the Surface
- Rupture of the Wire in the Well
- Toolstring Blocked during Operations
- Rupture or Unscrewing of the Toolstring

4. COILED TUBING

GENERALITY

COMPONENTS
- Power Unit and Control Unit
- Reel
- Coiled Tubing
- Injector head
- Pressurised Equipment
- Stripper (Stuffing Box)
- Stack BOP
- Adapter Flange and Lubricators
- Optional Equipment for Fluids
- Optional Equipment for Nitrogen

BOTTOM HOLE STRING AND EQUIPMENT
- Coiled Tubing Connections
- Check Valve and Circulating Sub
- Hydraulic Releasing Tool
- Jarring Assembly
- Centralisers, Knuckle Joints
- Jetting Tool, Rotating Nozzle and Drill Bit
- Pulling Running and Fishing Tools
- Inflatable Bridge Plug and Inflatable Packer
- Tubing End Locator, Tubing Cutter

INSTALLATION AND TEST
- Preliminary Checks
- Equipment Installation
- Pressure Test
- Operating Test

COILED TUBING OPERATIONS
- Well Killing
- Gas Lifting, Clean-up and Production Start-up
- Washing, Sand Washing and Bottomhole Cleaning
- Removal of Paraffin, Saline or Asph. Deposits
- Cleaning with Downhole Motor
- Acid Jobs
- Cementing
- Logging and Perforating

EMERGENCIES
- Perforation of the Coiled Tubing
- Rupture of the Coiled Tubing
- Coiled Tubing Stuck Downhole
- Leakage of Well Head Equipment
- Leakage at the Stripper
- Failure of the Check Valve

5.SNUBBING

GENERALITY

COMPONENTS
- Stack BOP
- Strippers
- Lifting System
- Rotation Head
- Control Panels

FUNCTIONING
- Stripping Procedure

INSTALLATION AND TEST

OPERATIONS WITH SNUBBING UNIT

6. PROCEDURES TO OPERATE UNDER SAFE CONDITIONS

INFORMATION ON THE WELL
- Well Data
- Situation of the Well
- Preliminary Operations and Check

WELL KILLING PROCEDURES
- Circulation
- Bullheading
- Lubricate and Bleed

EXPULSION OF THE CUSHION BELOW PACKER
- Reverse circulation

PULLING OUT OF THE HOLE
- Single completion
- Dual completion

ABANDONING THE WELL
- Temporary abandoning
- Final abandonment
- Pressurised annulus

7. WELL CONTROL PROCEDURES IN CASE OF A KICK

SHUT-IN PROCEDURES
- Kick during workover operations
- Single completion
- Dual completion

WELL CONTROL METHODS
- Driller's method
- Wait and weight method
- Volumetric method
- Lubricate and bleed

OPERATIVE COMPLICATIONS
- Total circulation loss
- Washout during circulation
- Trapped pressures
- Pressure on casing
- Hydrogen sulphide

APPENDIX A

FUNDAMENTAL PRESSURES
- Hydrostatic Pressure
- Pressure losses in the annulus
- Bottom Hole Pressure
- Formation Pressure
- Fracture Pressure
- Shut In Pressures

GAS CHARACTERISTICS AND BEHAVIOUR
- Gas law
- Gas migration without expansion
- Gas migration with uncontrolled expansion
- Gas migration with controlled expansion
- Gas solubility: properties of oil fluid

APPENDIX B

WIRELINE EQUIPMENT
- Pulling tools
- Tubing lock mandrel
- Sliding Sleeves Service Tools
- Bottom Hole Tools for Pressure Control
- Tubing Safety Valve (SSCSV)
- Surface Controlled Subsurface Safety Valve (SCSSV)
- Flowing Level Change with Slick Line
- Completion Assistance
- Artificial Lift
- Securing the Well at End of Completion

WIRELINE OPERATION
- Wireline Techniques
- Wireline string
- Tubing Gauging
- Tubing Cleaning

COILED TUBING OPERATION
- Gas lift
- Sand clean-out
- Mechanical scale removal
- Opening circulation valve
- Flow Activated Shifting Tool