Well Completion and Workover

DAY 1: Module 1 and 2

Pre- Course Test
Module 1: Reservoir Characteristics & Well Completion Concept

• Porosity
• Permeability
• Relative Permeability
• Saturation
• Natural Fracturing
• Hydraulic Fracturing
• Pressures
• Reservoir Pressure
• Basic Pressure calculations
• Pressure Differential
• Well Temperature
• Formation Damage, causes, and prevention of formation damage
• Introduction to well completion (operationally & technically)
• Darcy’s law and skin effect/damage
• Well performance

Modul 2: Well Completion Types

• Introduction to completion design 
• Reservoir completion 
• Well completion classification
• Completion Components (Features & Usage)
  • Completion Philosophy
  • Completion Components
    • X-mas tree, tubing hangers, SC-SSSV, packers, tailpipes, expansion devices, nipples, mandrels, gauges, etc.
  •  Interface with Reservoir Completion
• Materials Selection
  • Metals
  • Metallurgy & Corrosion
  • Elastomers and Plastics
  • Protective Coatings
• Tubing Performance
  • Basics of PVT (Pressure, Volume, Temperature)
  • Multi-Phase Flow
  • Tubing Sizing
  • Interface with Reservoir Completion
  • Lazy Wells
• X-mas tree
• Wellhead
• Casings
• Liners
• Production tubing string 
• Packers
• Sub-Surface control system (SC-SSSVs)
• Wellhead control system
• Artificial lift completions (ESP, GL) 
• Smart completions
• Drilling fluids
• Completion fluids
• Wellhead configuration
• Functional requirements of completion
• Surface equipment
• Impact of well completion selection on future operations in the well
• Case Study:
  • Introduction to full field development 
  • Impact of different well environments on completion design (low porosity, low permeability, H2S, CO2, high GOR, etc.).

DAY 2 - Module 3, 4 and 5

Quizzes & recap
Module 3: Reasons for Work-overs and Well Preparation

• Formation damage
• Sand control
• Acidizing
• Corrosion
• Hydraulic fracturing
• Mechanical problems
• Enhancing production thru artificial lift methods: Gas lift, ESP, JP, SRP 
• Production chemistry: handling challenging reservoir environments (introduction to reservoir fluids, identification of common production problems, mitigation of production problems such as scale, wax, hydrates, asphaltenes, reservoir souring & H2S).
• Well Preparations for workover
• Tree and BOP installation/rigging down
• Change of objectives
• Excessive gas & water production

Module 4: Tubing Stresses, Completion Selection and Operations

• Tubing stress analysis
• Purpose of stress analysis
• Stress loads
  • Stress and strain
  • Axial loads
  • Burst/Collapse
  • Tri-axial analysis
  • Safety factors and design factors
  • Load cases
  • Completion of equipment and connections
• Completion operations base preparation
  • Equipment purchasing and factory acceptance
  • Service contract
  • Equipment preparation
  • Technical program
• Rig Preparation and complete installation process
  • Operation planning
  • Pre-Job meeting
  • Casing cleaning operation
  • Running in the hole the completed equipment
  • Well clean-pp
  • Reporting
  • After action review

Module 5: Overview of Surface & Subsurface Wellbore Equipment & Procedures

• Blowout preventer stacks and components
• Working and production tubing
• Auxiliary well control equipment
• Plugs & Packers
• Verification of shut-in
• Monitoring and recording during shut-in
• Preparing for well entry
• Wireline open-hole operations
• Contingency procedure for wireline
• Contingency procedures for coiled tubing
• Contingency procedure for coiled tubing
• Case Study:
  • Importance of well-completion design and selection on completion running and future operations.
  • Tubing stress calculations

DAY 3 - Module 6, 7, and 8

Quizzes & recap
Module 6: Barriers, Completion and Work-over Fluids

• Philosophy and Operation of Barrier Systems
• Levels of Barriers
• Types of Barriers
• Barrier Management
• Influx Detection
• Gas Characteristics and Behavior
• Pressure and Volume Relationship (Boyles Law)
• Workover/ Completion Fluid Functions
• Liquids and Fluid Properties
• Testing of Downhole Completion Equipment
• Testing of Well Control Equipment Connections
• Well Control Drills

Module 7: Well Control Principles, including:

• Primary well control 
• Kick Fundamentals:
  • Definition of kick
  • Causes of kick 
    • Unintentional flow or kick from the formation
    • Intentional flow or kick from the formation
  • Kick detection
    • Kick indicator
    • Warning signals
    • Indications of a possible increase in formation pressure
    • Importance of timely response to kick indicators distinguishing kick indicators and warning signals from other signs.
• Tripping practices
• Drilling Fluids
  • Types of drilling fluids
  • Fluid property effects on pressure losses
  • Fluid density measuring techniques
  • Mud properties following weight-up and dilution
• Secondary well control
• Tertiary well control
• Barrier Definition and Theory

 Module 8: Well Control Equipment, including: 

• BOP configuration, requirements, and operations
• BOP closing unit function and performance
• Manifolds and pipes
• Valves
• Auxiliary well control equipment
• Accumulator
• Choke and kill manifold
• Circulation system
• Well Killing Operations
  • Forward circulation
  • Reverse circulation
  • Bullhead
  • Lubricate and Bleed
• Case Study:
  • Deepwater horizon blowout & well control problem

DAY 4 - Module 9 and 10

Quizzes & recap
Module 9: Well Intervention Operations

• Conventional:
  • Coiled Tubing Operations
    • Well kick-off operations
    • Stimulation
    • Scale Removal
    • Cement Squeeze
    • Fishing Operations
  • Well-killing & securing for well routine maintenance operations
  • Wireline (Slick, E-line)
  • Snubbing operations
  • Well Testing (PTS, MPFM)
• Non-Conventional:
  • Well Control 
  • Emergency 
• Impact of well completion on well intervention operations
• Workover Operations:
  • Workover definition and description
  • Workover Types
  • Safety Workover (SWO)
    • Long-term suspension (LTS)
    • Plug and Abandonment (P&A)
    • Production enhancement (PE)

Module 10: Kick Causes, Warning Signs, Kill Methods, Risk Awareness & Organizing Well Control Operation,  Natural Flowing & Artificial Well Workover Programs

• Well shut-in and killing considerations
• Well control problems
• The objective of well control techniques
• Bullhead
• Volumetric method
• Lube and Bleed
• Forward circulation
• (Drillers) Method
• Reverse circulation
• Handling kill problems
• Potential impacts of a well control event
• Well Integrity
• Case Study:
  • 3 case studies by participants

DAY 5 - Module 11

• Pressure control equipment/Barrier envelope considerations
• Personnel assignment
• Plan responses to anticipated well-control scenarios
• Blockages& trapped pressure in tubing/wellbore
• Blockage & restricted access in tubing/wellbore
• Hydrates
• H2S considerations
• Natural flowing and artificial well work over programs

Module 11: Emerging Techniques

• Fiber optics: Distributed Temperature System (DTS), Pressure/ temperature (P/T), etc.
• Interventionless packers (Hydrostatic packers, swelling packers, etc.)
• In-situ self-generating weak acid
• Expandable tubular
• Expandable Sand Screens (ESS)
• Sand Control in High angle and long intervals: Alternate path technology (SHUTS, CAPS, etc.)
• Formation Isolation Valves (FIV)
• Intelligent & Smart Well Completion: Interval Control Valves (ICV)
• Underbalanced Drilling & Completion
• Cased Hole Circulation Drilling & completion
• Multistage Fracturing
• Post-course test

What is Well Completion and Workover training course objective?

The course is designed to focus on practical applications regarding:

• Developing high-level completion strategy for wells in a variety of situations.
• Selecting tubing, packers, and completion flow control equipment
• Appraising/designing a suitable flow barrier strategy
• Introducing recommendations on installation and retrieval practices for tubing, packers, etc.
• Identifying key designs for horizontal, multilateral, HPHT wells, etc.
• Selecting appropriate intervention strategy/equipment
• Identifying key features/applicability of the main sand control, formation fracing and well stimulation options.
• Assessing/specifying concerns/remedial measures for formation damage/ skin removal.
• Developing and outlining an overall strategy for a complete program.
• The course focuses on practical applications of various techniques and methodologies in well-completion.
• Upon Completing the Course, you will be able to:
  • Plan Effective Operation
    • By learning practical methods of design
    • Plan and install safe and efficient well completion and workover
    • Improve well productivity by integrating the importance of the completion process to future production in order to enhance performance and failures.
• Improve effectiveness and efficiency of work performance by learning ways to conduct operations smoothly in a correct technique.
• Improve the effectiveness of operations