Well Completion and Workover

Magdi El Naggar

The course is designed to give an overview of well completions, as well as workover operations, being carried out to maintain well integrity and availability for production/ injection. It introduces completion techniques, equipment, perforating methodologies and techniques, wellhead and downhole equipment, hydraulic fracturing, acidizing, squeeze cementing, and scale removal techniques. It helps attendants to understand completion technology and be familiar with the tools and the know-how of various oil well completions. Moreover, it focuses on:

  • Practical application of various techniques and methodologies in well completion from completion type selection, perforation strategies, fluid selection as well as surface installations.
  • Specific completion design project and case studies for success/failure case histories for different cases of well-completion installations in different operating environments.

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


Who should join Well Completion & Workover training course by PetroSync?

  • New Drilling Engineers with 0-10 Years of Experience
  • Drilling Engineers with Field Experience with 0-10 Years of Experience
  • Drilling Supervisors with 0-10 Years of Experience
  • Production Engineers with 0-10 Years of Experience
  • Petroleum Engineers with 0-10 Years of Experience
  • Reservoir Engineers with 0-10 Years of Experience
  • Petrophysicist with 0-10 Years of Experience
  • Both field and Administration Staff of Drilling related service companies with 0-10 Years of Experience

Magdi El Naggar

Managing Director

Magdi El Naggar is officially Certified as Professional Petroleum Engineering Consultants (License 116/7). He has 46 years of professional experience n various phases of Petroleum Engineering including Petroleum/Reservoir/Production/Drilling & Workover Engineering as well as field operations with several multi-national international companies including ARAMCO (Saudi Arabia) and ADNOC (UAE). He has extensive professional experiences in all phases of well intervention operations including coiled tubing, especially during well emergency cases, well control and extended reach operations.

He specialized in well intervention operations, especially, during emergency cases and well blowouts. He also has extensive experiences in full field development studies, Production Enhancement for oil fields as well as various types of wells, CO2 Injection and EOR operations, IWCF & IADC certification.

  • Code PST0425-202301
  • Start Date 21 Aug, 2023
  • End Date 25 Aug, 2023
  • Locations Kuala Lumpur, Malaysia
  • Cost USD 4195
Code Start Date End Date Locations Cost Instructor Register
PST0425-202301 21 Aug, 2023 25 Aug, 2023 Kuala Lumpur, Malaysia USD 4195 Magdi El Naggar
Download Brochure
Related Course
02 - Oct, 2023
Oil Process Facilities

Magdi El Naggar

Read more
20 - Nov, 2023
Water Flooding Management

Magdi El Naggar

Read more
27 - Nov, 2023
Artificial Lift Methods

Magdi El Naggar

Read more