Course Overview

The course is designed to give an overview of oil and gas well completions. It introduces completion techniques and equipment, perforating methodologies and techniques, wellhead and downhole equipment, hydraulic fracturing, acidizing, squeeze cementing and scale removal technique. 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 environment.

The course is designed to focus on practical applications regarding:

• Developing high level completion strategy for wells in variety of situations.
• Selecting tubing, packers, and completion flow control equipment
• Appraising/designing suitable flow barrier strategy
• Introducing recommendations on installation and retrieval practices for tubing, packers, etc.
• Identifying key design 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 overall strategy for a completion program.
• The course focuses on practical applications of various techniques and methodologies in well completion.

Course Objectives

By the end of this training, participants 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 into future production in order to enhance performance and failures.
• Improve effectiveness and efficiency of work performance by learning ways to conduct operations smoothly with the correct techniques.
• Improve the effectiveness of operations

Who Should Attend?

• Drilling Engineers
• Drilling supervisors
• Operation Engineers
• Completion Engineers
• Reservoir Engineers
• Production Engineers
• Well Site Engineers
• Rig Staff

Course Contents

Day ONE

Module (01) 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
• Well stimulation concept, definition and classification

Module (02) 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, tail pipes, 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
• Group discussion & exercises

Day TWO

Module (03) 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 (04) 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 equipment and connections
• Completion operations base preparation
• Equipment purchasing and factory acceptance
• Service contract
• Equipment preparation
• Technical program
• Rig Preparation and completion installation process
• Operation planning
• Pre-Job meeting
• Casing cleaning operation
• Running in hole the completion equipment
• Well clean-pp
• Reporting
• After action review

Module (05) Overview of Surface & Subsurface Wellbore Equipment & Procedures

• Blowout preventer stacks and components
• Workstring 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

Day THREE

Module (06) Barriers, Completion and Workover 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 (07) Well Control Principles, including

• Primary well control
• Kick Fundamentals:
• Definition of kick
• Causes of kick
  • Unintentional flow or kick from formation
  • Intentional flow or kick from formation
• Kick detection
  • Kick indicator
  • Warning signals
  • Indications of 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 (08) 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
• Bullheading
• Lubricate and Bleed

Day FOUR

Module (09) 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
• Objective of well control techniques
• Bullheading
• Volumetric method
• Lube and Bleed
• Forward circulation
• (Driller’s) Method
• Reverse circulation
• Handling kill problems
• Potential impacts of a well control event
• Well integrity
• Group discussion, case study & exercises

Day FIVE

• 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 tubulars
• Expandable Sand Screens (ESS)
• Sand Control in High angle and long interval: 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