TRAINING WELL INTERVENTION & WORK OVER

DESCRIPTION

Well intervention: An operation carried out on an oil or gas well to extend its producing life by improving performance or providing access to stranded or additional hydrocarbon reserves. They are remedial operations performed on producing wells as they get older. This is because they require periodic maintenance. Some reasons a well may require intervention include:

• Mechanical failure
• Flow restrictions caused by sand production
• A decrease in production due to the build-up of solid hydrocarbons
• Change in reservoir characteristics
• And, to access additional hydrocarbon pay zones.

Broadly speaking, well interventions are remedial operations conducted on live well with the Christmas tree and production string still in place.

The term workover is generally used when referring to remedial operations where the well is killed, the Christmas tree is removed and a blowout preventer is installed. Well interventions may be rig less or rig assisted. Workover operations are normally conducted using either a drilling or workover rig.

OUTLINE COURSE

1. Overview

2. Reasons For Well Intervention

3. Well Intervention Methods

   1. Coiled Tubing
   2. Snubbing Unit
   3. Slick Line Unit
   4. Subsea Well Intervention

4. Pressure Control During Well Intervention

5. Primary Barriers That Are Needed During Well Intervention

6. Reasons For Workover

7. Application Of Workover Operation

8. Types Of Workover Operation

9. Analysis Well Problem

   1. Well And Completion Characteristics
   2. Well History
   3. Offset Well Performance
   4. Geological Data And Cross Section
   5. Open Hole Logging
   6. Core Data
   7. Test Use For Diagnostic Problems

10. Well Operations Through The Life Of A Well

RECOMMENDED AUDIENCE

• Workover & Well Intervention Engineers
• Production & Reservoir Engineers
• Drilling & Well Service Supervisors
• Completion & Production Technologists
• Field Operations & Asset Integrity Engineers