Fishing Operations Training Course

1. Introduction to Fishing Operations

1.1 Fundamentals of Fishing Operations

• Definition and scope of fishing operations including (stuck pipe, lost tools, broken equipment)

• Economic impact of fishing operations including (non-productive time, well abandonment decisions)

• Historical development of fishing technology including (evolution of tools, techniques, success rates)

• Statistical analysis of fishing operations including (success rates by fish type, wellbore conditions)

• Introduction to API RP 7G and IADC guidelines for fishing operations

1.2 Wellbore Mechanics and Fish Behavior

• Wellbore conditions affecting fishing including (deviation, dogleg severity, hole conditions)

• Fish behavior in the wellbore including (settling, rotation, movement potential)

• Force analysis in fishing operations including (pull capacity, jarring force calculations)

• Differential sticking mechanics including (pressure differentials, contact area, breaking force)

• Wellbore visualization techniques including (wellbore surveys, caliper logs, downhole camera)

2. Fish Identification and Assessment

2.1 Fish Classification and Identification

• Types of common fish including (drill string components, BHA components, completion equipment)

• Fish geometry and critical dimensions including (OD, ID, fishing neck profile, thread types)

• Fishing point identification including (box/pin connections, tool joints, crossovers)

• Documentation and record-keeping for fish identification including (tally books, component dimensions)

• Commercial fish catalogs and databases including (manufacturer specifications, dimensional data)

2.2 Situation Assessment

• Holistic assessment methodology including (well history, operating parameters, events timeline)

• Wellbore information gathering including (surveys, logs, previous operations)

• Fish position determination including (tagging techniques, marker runs, depth correlation)

• Fish orientation determination including (impression blocks, lead tags, downhole cameras)

• Assessment tools and technologies including (memory gauges, downhole measurements, wire-line services)

3. Fishing Tool Selection

3.1 Fishing Tool Fundamentals

• Fishing tool classifications including (internal, external, specialty tools)

• Matching tools to fish types including (decision matrices, selection criteria)

• Tool dimensions and compatibility including (catch ranges, clearance calculations)

• Tool engagement mechanisms including (friction grip, mechanical latch, hydraulic set)

• Tool limitations and constraints including (setting depths, temperature ratings, pull capacities)

3.2 Specialized Fishing Tools

• Internal catching tools including (spears, pack-offs, retrievable packers)

• External catching tools including (overshots, bumper subs, safety joints)

• Cutting and milling tools including (section mills, junk mills, tapered mills)

• Impression and locating tools including (impression blocks, junk baskets, magnets)

• Specialty fishing tools including (wireline fishing tools, coiled tubing fishing tools)

4. Fishing Plans Development

4.1 Planning Methodology

• Systematic approach to fishing plan development including (objective definition, success criteria)

• Information gathering and documentation including (fish datasheets, well schematic, BHA records)

• Tool selection workflow including (primary tools, contingency tools, alternative approaches)

• Operational sequence development including (run-in procedures, engagement techniques, retrieval methods)

• Contingency planning including (fish manipulation options, alternative recovery methods)

4.2 Fishing Plan Documentation

• Standard fishing plan formats including (procedural steps, technical specifications, diagrams)

• Risk assessment integration including (potential failure modes, mitigation measures)

• Critical parameters documentation including (weight indicators, torque limits, circulation pressure)

• Equipment and personnel requirements including (rig capabilities, specialized personnel)

• Management of change processes including (decision trees, modification protocols)

5. Fishing Operations Execution

5.1 Surface Preparation

• Pre-job safety meetings and briefings including (hazard identification, emergency procedures)

• Fishing tool preparation including (inspection, assembly, pressure testing)

• Rig floor setup including (tool layout, handling equipment, safety barriers)

• Function testing of specialized equipment including (jars, bumper subs, hydraulic systems)

• Surface monitoring systems including (weight indicators, torque measurement, hydraulic pressure)

5.2 Downhole Operations

• Run-in-hole procedures including (speed limitations, circulation practices, rotation protocols)

• Fish engagement techniques including (tagging procedures, alignment methods, latch verification)

• Jarring operations including (jarring energy calculations, up/down jarring techniques)

• Circulation techniques during fishing including (hole cleaning, fluid selection, pressure monitoring)

• Fish retrieval procedures including (pull techniques, safety factor applications, backup methods)

6. Specialized Fishing Operations

6.1 Challenging Environment Operations

• High-pressure/high-temperature considerations including (tool selection, fluid compatibility)

• Extended-reach well challenges including (friction factors, weight transfer, torque management)

• Deepwater fishing operations including (hydrostatic effects, temperature gradients, riser considerations)

• Horizontal well fishing techniques including (coiled tubing applications, tractors, vibratory tools)

• Fishing operations in sour service including (material selection, safety protocols, monitoring requirements)

6.2 Multi-String Fishing

• Multi-string fish assessment including (fish interface locations, freedom of movement evaluation)

• Sequential recovery strategies including (inner string recovery, outer string engagement)

• Specialized multi-string tools including (spear-overshot combinations, selective catching tools)

• Cut and recover techniques including (pipe cutting methods, section milling approaches)

• Case studies of complex multi-string recoveries including (lessons learned, success factors)

7. Alternative Recovery Methods

7.1 Milling Operations

• Milling strategy development including (top-down vs. bottom-up approaches, target selection)

• Mill selection including (junk mills, pilot mills, section mills)

• Milling parameter optimization including (weight, RPM, hydraulics)

• Milling monitoring techniques including (weight on mill, torque patterns, cuttings analysis)

• Limitations and challenges including (metal debris management, formation damage, progress evaluation)

7.2 Unconventional Recovery Techniques

• Chemical cutting applications including (chemical selection, deployment methods, safety considerations)

• Explosive severance techniques including (shaped charges, deployment systems, regulatory requirements)

• Specialized fluid applications including (acid dissolving, solvent washing, lubricant spotting)

• Sidetracking decision process including (fish bypassing, whipstock setting, window milling)

• Novel recovery technologies including (downhole robotics, specialized coiled tubing tools)

8. HSE in Fishing Operations

• Risk assessment methodologies including (job safety analysis, mechanical risk factors)

• Pressure control considerations including (lubricator operations, well control equipment)

• Handling of specialized tools including (radioactive tracers, explosives, hazardous chemicals)

• Personnel safety during high-tension operations including (safe positioning, line-of-fire awareness)

• Environmental considerations including (waste management, fluid handling, spill containment)

9. Quality Management in Fishing Operations

• Tool inspection and certification including (dimensional verification, load testing, NDT methods)

• Fishing operation documentation including (procedural compliance, operational parameters)

• Lessons learned process including (success and failure analysis, knowledge sharing)

• Performance metrics and benchmarking including (success rates, NPT reduction, cost analysis)

• Continuous improvement methodologies including (after-action reviews, best practice development)

10. Case Studies & Group Discussions

• Regional case studies from Middle East operations including (complex well geometries, HPHT conditions)

• Successful fishing operations analysis including (critical success factors, innovative approaches)

• Failed fishing operations review including (root causes, alternative strategies)

• Decision-making exercises including (tool selection, operational sequencing, contingency activation)

• The importance of proper training in successful fishing operations