Enhanced Oil Recovery Technology to Boost Production

DESKRIPSI

Oil recovery operations traditionally have been subdivided into three stages: primary, secondary and tertiary. These stages described the production from a reservoir in a chronological sense. Primary production resulted from the displacement energy naturally existing in reservoir. Secondary recovery usually implemented after primary production declined, the term secondary recovery is now almost synonymous with waterflooding. Tertiary recovery was that obtained after waterflooding (or whatever secondary process used) it?s used miscible gases, chemicals and/or thermal energy to displace additional oil. When the waterflooding stage might be reasonably be bypassed the term tertiary recovery fell into disfavor in petroleum engineering term and the designation of enhanced oil recovery (EOR) become accepted to replace the term of secondary and tertiary recovery.

In describing the different EOR processes (Waterflooding, Miscible Displacement, Chemical Flooding: Micellar/Polymer, Surfactant, Alkaline and finally Thermal Recovery Processes, it will be focused on the fundamental concepts of each processes and it will also present methods of predicting oil recovery when the processes are applied to oil reservoir. Many methods are available to calculate displacement performance, ranging from simple models based on volumetric sweep to sophisticated method. Thus, with the proper understanding of all enhanced oil recovery processes will reduce the entire cost of the plant and production operation of EOR system.

This five-day training will provide a comprehensive knowledge and understanding of different EOR processes (Waterflooding, Miscible Displacement, Chemical Flooding: Micellar/Polymer, Surfactant, Alkaline) and Thermal Recovery Processes with various fields example.

OBJECTIVES

• Refresh the knowledge of the participants on reservoir engineering and enhanced oil recovery (EOR) processes.
• Understand the fundamental concepts of each EOR process and ability to calculate and to predict the EOR performance.
• Learn the simple EOR models based on volumetric sweep model to sophisticated method of calculation.
• Enhance the knowledge on EOR processes (Waterflooding, Miscible Displacement, Chemical Flooding: Micellar/Polymer, Surfactant, Alkaline) and Thermal Recovery Processes with various fields example.
• Gain additional knowledge on EOR processes (Waterflooding, MiscibleDisplacement, Chemical Flooding: Micellar/Polymer, Surfactant, Alkaline) and Thermal Recovery Processes. Knowledge sharing among the participants and instructors

FEATURING THE FOLLOWING SUBEJCTS

1. Introduction to EOR Processes
   • Definition of EOR
   • Target Oil Resources for EOR Processes
   • Idealized Characteristics of an EOR Processes
   • Potential of Different Processes
   • Screening Criteria for Process Applicability
2. Microscopic Displacement of Fluids in a Reservoir
   • Capillary Forces
   • Viscous Forces
   • Phase Trapping
   • Mobilization of Trapped Phases-Alteration of Viscous/Capillary Force Ratio
3. Displacement in Linear System
   • Waterflood Performance-Frontal Advanced Equation
   • Viscous Waterflood in a Linear System
   • Chemical Flooding in Linear System
   • Application of Chemical Flooding Model
   • Displacement of Slugs
   • Dispersion During Miscible Displacement
   • Viscous Fingering-Instability in Displacement Fronts
4. Macroscopic Displacement of Fluids in a Reservoir
   • Volumetric Displacement Efficiency and Material Balance
   • Definition and Discussion of Mobility Ratio
   • Area Displacement Efficiency
   • Vertical Displacement Efficiency
   • Volumetric Displacement Efficiency
5. Mobility-Control Processes
   • Process Description
   • Physical and Chemical Characteristics of Polymer
   • Flow Polymer Through Porous Media
   • In-Situ Permeability Modification
   • Mobility Control to maintain Chemical Slug Integrity
   • Foam as EOR Agent
   • Water Alternating Gas (WAG) Process
6. Miscible Displacement Processes
   • General Description of Miscible Displacement
   • Principles of Phase Behavior in Miscible Displacement
   • First Contact Miscibility (FCM) and Multiple Contact Miscibility (MCM) Processes
   • Measurement and Prediction of Minimum Miscible Pressure (MMP) or Minimum Miscible Gas Enrichment (MME) in Multiple Contact Process
   • Fluid Properties in Miscible Displacement
   • Miscible Displacement Modeling
7. Chemical Flooding
   • Description of Micellar/Polymer Process
   • Surfactants
   • Phase Behavior of Microemultion and Inter Facial Tension(IFT)
   • Variables Affecting Phase Behavior and IFT
   • Viscosity and Density of Microemultion
   • Displacement Mechanism
   • Modeling, design Procedure and Criteria of Chemical Flood Displacement
   • Alkaline Flooding
8. Thermal Recovery Processes
   • Heat Losses During Steam Injection
   • Cyclic Steam Stimulation
   • Reservoir Heating by Steam Injection
   • Estimating of Oil Recovery From Steam Drive
   • In-Situ Combustion
   • Comparison of Steam and In-Situ Combustion
9. Discussion on successful & unsuccessful EOR projects

Course Leader :

Dr. Ir. Sudjati Rachmat, DEA

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