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Enhancement Oil Recovery Methods; Theory and Application

Enhancement Oil Recovery Methods; Theory and Application

Course Description

While the primary objective of the course is to prepare reservoir engineers and/or petroleum engineers to utilize existing tests’ results and well/reservoir performance data, it will be invaluable to those who face the responsibility of formulating EOR programs for green and brown fields alike. The potential savings by avoiding expensive and time consuming programs render to unreliable or questionable outcomes are tremendously significant! Therefore, attending this course should be mandatory to all who deal with screening, processing and analyzing CCA/SCA data for EOR/IOR purposes.

Learning Outcomes: 

  • Analyze and evaluate reported relative permeability curves and make necessary tuning and fine-tuning 
  • Relate CCA/SCA results to rock typing and reservoir characterization 
  • Formulate efficient CCA/SCA program for a new well or reservoir 
  • Screen methods of EOR based on clear criterion 
  • Examine, evaluate, monitor, modify and update selected EOR technology on regular basis

Course Outline:

Day 1:   

  • Introduction of CCA/SCAL sources and utilization 
    • Uses and importance of accurate conventional and special core analysis results in reservoir engineering calculations 
    • Key -challenges in using laboratory  results
  • Validation of  CCA/SCA Data 
    • What to look for during review of SCA  reports 
    • A systematic approach to data validation 
    • Review checklists
  • Use of Capillary  Pressure to Define Connate Water Saturation 
    • Measurement techniques 
    • Shortcomings of air-mercury data 
    • Adjusting laboratory data to reservoir conditions 
    • Correlation techniques

Day-2: 

  • CCA/SCA Versus  Reservoir Characterization
    • Examples of relationships between relative permeability and other rock characteristics 
    • Characterization techniques role in identifying rock typing and assigning data to those rock types
  • Wettability
    • Wettability concepts and measurement techniques 
    • Types of wettability 
    • Factors affect reservoir wettability and how natural wettability can inadvertently be altered    during core handling 
    • Wettability restoration
  • Relative Permeability
    • Measurement methods and techniques 
    • Wettability considerations 
    • Importance of test procedures and test conditions 
    • Special problems with intermediate (neutral) wettability reservoirs 
    • Refining laboratory results, integrating, grouping and averaging
  • ROS (Residual Oil Saturation (ROS) / SWir (Irreducible Water Saturation) / Cross-Over Issues
    • Ambiguity and alternative definitions 
    • Difficulties in determining 
    • Estimating one from another (indirect measurement) 
    • Effect of wettability and quality of Rel Perms curves

Day-3: 

  • Multiphase Flow in Porous Media
    • Physical assumptions and their implications 
    • Displacement under Segregated Flow Conditions 
    • Displacement in Stratified Reservoirs 
    • Wettability 
    • Capillary Pressure
    • Interfacial Tension 
    • Relative Permeability 
    • Frontal Advance Theorem 
    • Micro/Macro Displacement Capillary Pressure
  • Viscosity Control Management
    • Onshore versus Onshore FDP 
    • Case Study 
  • Interfacial Tension Management
  • Saturation Functions
    • Leverett J-Function 
    • Johnson Sat Function 
    • Cuddy et al. Sat Function 
    • Skelt-Harrison Sat Function
  • Polymer Injection
    • Process Description 
    • Role of Experimental Study 
    • Field Applications 
    • Case Studies
  • Overview on Enhanced Oil Recovery (EOR) Processes
    • Oil Recovery Methods 
    • Methods to Improve Recovery Efficiency 
    • EOR Processes 
    • Summary of Screening Criteria for EOR Methods 
    • Emphasis on Chemical EOR 
    • Environmental & Economical Aspects of EOR Processes 
    • Comparative Performance of Different EOR Methods
  • Case Studies

Day-4: 

  • Immiscible Gas Flooding
    • CO2 Gas Injection 
    • N2 Gas Injection 
    • Hydrocarbon Gases Injection 
    • Associated Challenges
  • Surfactant
    • Process Description 
    • Role of Experimental Study 
    • Field Applications 
    • Case Studies
  • Problems and Constraints 
  • Surfactant Micellar-Polymer Methods
  • Alkaline-Surfactant-Polymer Methods 
  • Crosslinked Polymers and Chemical Gels 
  • Significant Technology Development 
  • Case Studies

Day 5 

Resources:

Targeted Audience:

Class lectures / Case studies / Group exercises / Software usage

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