Wellbore Treatments

Magdi El Naggar

Wellbore Treatments

This course is designed to provide better understanding, enhance knowledge and strengthen the decision-making capability of the participants for all types of wellbore treatments implemented to recover or enhance well performance.

It is important for proper decision-making to have a basic understanding of the types of formations and basic reservoir properties. For this reason, efforts will be exerted at the early phase of the course to understand the geological and reservoir properties of vertical, horizontal, and multilateral wells prior to developing the basic concepts of formation damage, acidizing, and hydraulic fracturing. Moreover, the course includes acidizing and fracturing quality control, conducting treatments, monitoring pressures and other critical parameters, during and after the treatments. A vital part of the course is class teamwork whereby attendee teams evaluate and design stimulation treatments to bring out important information and parameters discussed during the course.

DAY 1: Module 1-4

Pre-Course Test

Module1: Reservoir Characteristics, Exploration, and Recovery Methods

  • Definition of Reservoir
  • Reservoir Heterogeneities
  • Reservoir Characteristics:
    • Porosity
    • Permeability
    • Relative Permeability
    • Saturation
    • Natural Fracturing
    • Pressures
    • Reservoir Pressure
    • Basic Pressure calculations
    • Pressure Differential
    • Well Temperature
    • Drilling Fluids
    • Completion Fluids

Module2: Well Completions

  • Definition of well completion
  • Well completion Classification
  • X-mas Tree
  • Wellhead
  • Casings
  • Liners
  • Production Tubing String
  • Packers
  • Sub-Surface Control Systems (SC-SSSVs)
  • Wellhead Control System
  • Artificial lift completions (ESP, GL)
  • Smart Completions
  • Impact of well completion selection on future operations in the well

Module3: Introduction to Formation Damage

  • What is meant by formation damage?
  • Causes of Formation Damage
  • Effect of Formation Damage on Well’s Productivity Index
  • Formation Damage Indicator and Consequences
  • Classification of Formation Damage Problem
  • Diagnosis of Formation Damage
  • Skin and impact on well productivity
  • Best Practice to Avoid Formation Damage

Module4: Formation Damage Mechanisms

  • Formation damage from drilling mud/processes
  • Formation damage from perforations
  • Formation damage from completion and workover fluid
  • Formation damage from oil and gas production activities
  • Formation damage from scales
  • Formation damage from organic deposits
  • Formation damage from Wettability changes
  • Formation damage from Acid stimulation
  • Formation damage from Injection (water injection, CO2
  • injection, polymer flooding, steam flooding.
  • Laboratory Techniques for Formation Damage Testing
    • Core flood test
    • Formation damage test
    • Screen plugging test
    • Sand retention test
    • Particle size distribution (PSD)
    • Rheological measurements
    • Compatibility tests / Emulsion stability
    • Solubility Tests

Case Study & Exercises
Formation damage magnitude and cost impact
Gas reservoir behaviors
Oil reservoir behavior
Sand control
Well productivity sudden decline and identifying proper
treatment requirements
Production profile slope change& how to use the data in
defining the problem
Utilizing a production history graph to detect the damage
How to use PBU/PFO tests to identify the skin factor as
indicator for the formation damage.
Partial penetration and slanted skin effect
Impact of perforation skin factor

DAY 2: Module 5-7

Quizzes & recap

Module5: Types of Acid Systems & Acid Formulations

  • Stimulation Definition and Concept
  • Types of Acid and Selection
  • Factors Affecting Reaction Rates
  • Selection of Treatment Type
  • Real-time Monitoring of Matrix Acidizing Treatments
  • Well Clean-up

Module6: Stimulation Techniques & Candidate Selection

  • Stimulation Techniques
  • Chemical Stimulation without Acid
  • Types of Stimulation Systems, Process and Procedures
  • Stimulation Candidates Selection
  • Matrix Fluid Selection
  • Matrix Acidizing Operations
  • Matrix Acidizing Design & Examples
  • Matrix Acidizing Process and Procedures
  • Matrix Acidizing Treatment Execution
  • Nitrified Acid & Foamed Acid operations

Module 7: Monitoring, Execution, Evaluation & Follow-Up

  • Acid Fracturing
  • Acid Corrosion Parameters
  • Selection of Diversion Techniques
  • Mechanical Diverting using Conventional Techniques
  • Ball Sealers
  • Viscous Fluid
  • Another Diverting Method
  • Potential Formation Damage Caused by Matrix Stimulation Fluid
  • Stimulation Techniques and Objectives Summary

Case Study & Exercises
Pressure behavior during acid injection
Offset wells comparison
PBU tests compare Pre, During & Post-treatment
On-site evaluation of acid treatment effectiveness

DAY 3: Module 8-10

Quizzes & recap

Module8: Stimulation of Sandstone Reservoir

  • Why stimulate the Sandstone reservoir?
  • Sandstone reservoir description (mineralogy)
  • Acid formulation and lab tests (acid response curve,
  • compatibility test, return permeability test, etc.).
  • How much overflush is required
  • How to avoid fluoride precipitation in sandstone stimulation

Case Study
The technical concept of Sandstone stimulation

Module9: Stimulation of Carbonate Reservoir

  • Why stimulate carbonate reservoir?
  • Carbonate reservoir description (mineralogy)
  • Acid formulation and lab tests (acid response curve, compatibility test, return permeability test, etc.).
  • What is the big deal about wormholes?
  • How to ensure the best acid coverage? Open hole? Cased hole?
  • Acid placement in heterogeneous reservoir? Use of diverting agents
  • How to ensure the best zonal coverage?
  • Practical guidelines on how to select and evaluate acid treatment

Module10: Basics of Hydraulic Fracture Treatment, Design, and Quality Control

  • Introduction to Hydraulic Fracturing
  • Basic principles in fracturing
  • Hydraulic Fracturing Fluids and Chemicals
  • Frac height prediction
  • Frac height design
  • Frac pressure prediction
  • Completion design for Frac well candidates
  • Perforation strategy
  • Fluid selection,
  • Proppant selection
  • Hydraulic Fracture Treatment Process
  • Hydraulic Fracture Operations & Stages
  • Rock Mechanics
  • Main Fracture Treatment Design
  • Hydraulic Fracturing Candidate Selection
    Case studies & Exercises
    General Field Description
    Well History
    Candidate selection
    Design, Execution, and Evaluation

DAY 4: Module 11-13

Quizzes & recap

Module11: Multi-Stage Fracturing Technology

  • Application in open hole horizontal well using swelling packer and stimulation sleeves.
  • Application in cased hole vertical to deviated wells using composite plug technology
  • Real-life field case history from planning, design, completion installation, stimulation to clean-up.
  • Example from carbonate reservoir

Module12: Sand Control Completion Overview

  • Sand production problem
  • What are the consequences of sand production?
  • Sand Detection
    • Sand monitoring
    • Measuring Sand production
  • Sand Prediction and Monitoring
    • What causes sand production?
    • Types of sand failure
    • How to predict sand production in new wells
    • How to predict sand failure during well production
  • Sand Control Completion
    • Selective perforation method
    • Cased hole gravel pack
    • Frack pack
    • Perforating for sand control
    • Frac pack completion: the success of a frac pack, frac pack limitations,
    • Frac pack fluids, frac pack installation, and treatment procedure.
    • Gravel pack / Frac pack evaluation
    • Sand Control field operations step.
      Case histories
      Analysis of sand production profile from well production history
      Identifying sand production spikes and possible reasons and prevention
      5 exercises

Module13: Production Problems

  • Scales
    • Introduction to scale
    • Sources of scale deposition
    • Types of scales
    • Why scale forms?
    • Impact of scale on well productivity
    • Scale control and prevention
    • Scale treatments
  • Paraffin /Wax
    • Consequences on flow assurance
    • Root cause of paraffin /wax problems
    • Preventive solutions
    • Wax removal
  • Asphaltene
    • Where and why are they formed?
    • Asphaltene removal?
  • Hydrates
    • Impact on productivity
    • Hydrate formation envelope
    • Hydrate prevention
      Case study & Exercises
      Tubing Plugging Cases (Partial, Complete)
      SrSo4 project
      Wireline Downhole Lost Tools
      4 exercises
      Hydrates common plug removal hazard
      Hydrates formation in offshore pipeline

DAY 5: Module 14-15

Module14: Excessive Water and Gas Shut-off

  • Problem types
  • Near wellbore flow
  • Fissures to injectors
  • Poor areal sweep
  • High permeability layer with or without cross flow
  • Gravity segregation layer
  • Coning
  • Diagnostics
  • Data collection techniques
  • Water/gas shut-off techniques

Case study& case history
Strategy for attacking excessive water production
Gas/water shutoff examples

Module15: Well Intervention Operations & Wellbore Treatment 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 and well intervention operations

Post Course Test

What is Wellbore Treatments training course objective?

  • Understand the geological and basic reservoir properties
  • Understand the formation damage concept and mechanism
  • Understand and identify the nature and origin of formation damage and mechanism
  • Understanding the effect of formation damage on revenue to the operator
  • Understanding the impact of skin damage effect on productivity for both vertical and horizontal wells.
  • Gain knowledge about various types of wellbore treatments to activate and remove formation damage.
  • Understand acid/fracturing, Nitrified & Foamed acid as well as N2 kick-off operations design basics and procedures.
  • Acquire knowledge on how to select the best fluid (less damaging) at every phase of the well development: drilling, completion, cementing, perforating, stimulation, gravel packing, workover, production, and injection operations
  • Understand acid and frac procedures and phases/stages including acid displacement and backflow.
  • Learn how to choose the adequate stimulation and fracturing and kick-off method techniques.
  • Learn how to select the suitable candidate for each technique of the treatment operations.
  • Understand the best practices and procedures to execute operations, backflow and stabilize wells post-operations.
  • Learn how to evaluate the effectiveness of treatment operations and measure the improvement.

Who should join Wellbore Treatments training course by PetroSync?

  • Operations Engineers with 0-10 Years Experience
  • Operations Supervisors with 0-10 Years Experience
  • Production Engineers with 0-10 Years Experience
  • Petroleum Engineers with 0-10 Years Experience
  • Reservoir Engineers with 0-10 Years Experience
  • Drilling Engineers with 0-10 Years Experience
  • Field Service Engineers with 0-10 Years 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 PST0431-202301
  • Start Date 02 Jan, 2023
  • End Date 06 Jan, 2023
  • Locations Kuala Lumpur, Malaysia
  • Cost USD 2995
Code Start Date End Date Locations Cost Instructor Register
PST0431-202301 02 Jan, 2023 06 Jan, 2023 Kuala Lumpur, Malaysia USD 2995 Magdi El Naggar