Learning objective
- Operational knowledge to specify tools and procedures to ensure the recovery of tools and/or equipment left downhole
- Evaluate the techno- economics and risks involved in fishing as compared with other alternatives such as sidetracking
- Ability to specify tools and procedures to ensure the recovery of tools and/or equipment left downhole under supervision
- Evaluate the economics and risks involved in fishing as compared with other alternatives such as sidetracking
- Monitor fishing operations in the field and provide recommendations regarding the tools and methods being used
Training Methodology:
This course will be conducted along with formal lectures and interactive worked examples. Each learning point will be reinforced with practical examples and case studies. There will be active discussion and video presentations. The sharing professional experiences and exchange will help solidify the gained knowledge. All training course materials will be provided.
Course Outlines:
Day-1
Fishing Operation Overview / Reasons for fishing operations
- Drill String Sticking
- Junk In Hole
- Key seating
- Ledges & Doglegs
- Stuck In Cement
Planning for fishing operation
- Study and analyze the reason of fishing operation
- Study and define the fish component
- Confirm well integrity barrier during fish operation
- Select the suitable tools that would minimize rig NPT.
Day-2
- Fishing stuck pipe
- Fishing tools specifications and function.
- External catch tool / Internal catch tool
- Fishing string components
- Jars and Pumper sub placement and Operation
- Fishing plan / Fishing Economics
- Determination of free point (mechanical method)
- Electric wire line method (FPI)
- Mechanical pack off
- Electric wire line / explosive pack off
- Chemical cutter / Jet cutter
- External or internal catch and jarring
- Washover and overshot and / or external cutter.
Day-3
Fishing stuck pipe / sidetracking
- Open hole sidetrack
- Cased hole sidetrack
- Prepare proper sidetrack profile to ensure safe operation
Case studies for discussion
- Differential stuck case study
- Mechanical stuck case study
- Free point calculation case study
- Open hole sidetrack case study
- Cased hole sidetrack case study
- General discussion Q & A.
Day-4
Stuck pipe / Completion
- Sigle completion killing and stuck pipe recovery
- Dual completion killing and pipe recovery
Case studies for discussion
- Single completion FPI calculation / recovery and fishing plan
- Dual completion / recovery and fishing plan
- Sidetracking option for un-completed recovery of completion.
- General discussion Q & A.
Day-5
Artificial lift completion fishing
- Electric submersible pump
- Hydraulic jet pump
- Sucker Rod pump
Rig-less intervention Fishing techniques
- Coiled tubing operation / wireline operation
- Snubbing / Hydraulic workover unit
- Scale / paraffin removal and prevention.