Description

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The benefits from attending

• Identify key reservoir rock and fluid properties from surface and down-hole measurements and explain their application in reservoir engineering
• Explain how fluid flows in the reservoir and describe the use and application of relative permeability curves for multi-phase flow
• List and discuss the main techniques for reserves estimation and their strengths and weaknesses. Discuss the concepts of performance trend analysis
• Explain the principle and limitations of the material balance method and the influence of drive mechanisms on the recovery factor
• Describe the concepts and application of well testing and pressure transient analysis. Explain the key interpretation methods and list the information that can be gained

Topics

• Introduction to Reservoir Engineering
• Petroleum initially in place (PIIP) estimation
• Estimating how much and how fast the petroleum can be recovered
• Factors affecting recovery factor
• Underground pressures and fluid gradients
• Reservoir fluid gradients and contacts
• Determining reservoir fluid contacts and estimating temperatures
• QUIZ - Introduction to Reservoir Engineering

• Units - an introduction to oilfield units
• Units - an exercise on conversion factors
• Units - prefixes in common use
• QUIZ - Units

• Foundations - Rock and fluid properties and Reserves estimation
• Reservoir Performance

• Reservoir fluid composition
• Reservoir fluid properties
• QUIZ - Reservoir fluid composition
• Reservoir fluid types (classification)
• Reservoir fluid types (typical oil and gas properties)
• Reservoir fluid properties - plots
• QUIZ - Reservoir fluid types and properties
• Wellbore fluids sampling
• Reservoir fluids measurements (PVT analysis)
• Fluid property correlations
• QUIZ - Reservoir fluid measurement, analysis and correlations
• PRACTICAL - Reservoir fluid properties

• Introduction to Rock Properties
• Porosity concepts and types
• Porosity values and measurement
• Permeability concepts and initial measurement (Darcy)
• Permeability measurement units
• Permeability measurement with air and correction for liquid
• Permeability values relationship with porosity and estimation
• QUIZ - Rock properites (porosity and permeability)
• Compressibility definition values and correlations
• Fluid saturation definitions and terminology
• Water oil and gas saturation concepts
• Fluid saturation changes with time and typical values
• QUIZ - Rock properties (compressibility and saturations)
• Surface and interfacial tension concepts
• Wettability concepts
• Capillary pressure concepts and applications
• Capillary pressure and transition zones
• Capillary pressure prediction using the Leverett J function
• Rock property measurements
• QUIZ - Rock properties (wettability and capillary pressures)

• Introduction to Relative Permeability
• Relative permeability tables and plots
• Normalised relative permeability
• Typical rel. perm. curves for oil or water wet rocks and gas reservoirs
• Relative permeability correlations (Corey functions)
• Introduction to Fractional Flow
• Fractional flow calculations for water and example plots
• QUIZ - Relative permeability and fractional flow

• Inflow performance and Productivity Index (PI)
• PI and Darcy's Law
• How to increase PI
• Pressure distribution in the reservoir
• Radial inflow performance equation (oil)
• QUIZ - Inflow performance and PI
• Two phase inflow performance (PI and Vogel)
• Skin components
• Inflow performance for gas reservoirs
• Inflow performance for water injectors
• QUIZ - Multiphase inflow performance

• Introduction to fluid flow through porous media
• Darcys law for radial flow
• Pressure distribution in the reservoir
• Radial flow regimes (1)
• Radial flow regimes (2)
• QUIZ - Fluid Flow through Porous Media (1)
• Darcys law for steady state and pseudo steady state flow (oil reservoirs)
• Radial flow equation for transient flow (oil reservoirs)
• Gas reservoirs IPR and the compressible fluid radial flow equation
• Radial flow equations for gas
• Multiphase steady state radial flow equations
• Introduction to Immiscible Displacement
• QUIZ - Fluid Flow through Porous Media (2)

• Introduction to reservoir drive mechanisms
• Primary recovery drives and typical recovery factors
• Secondary and tertiary (EOR) recovery drives
• Production characteristics of oil reservoirs by drive mechanism
• Production characteristics of gas reservoirs
• Summary of reservoir drive mechanisms
• QUIZ - Reservoir drive mechanisms

• Performance Trend Analysis techniques
• Introduction to decline curve analysis
• Arps decline curves
• Nominal and effective decline rates
• Typical decline curve plots
• Applications and limitations of decline curves
• Rate transient analysis - Fetkovitch type curves
• Rate transient analysis - Blasingame type curves
• Water oil ratio plot
• Gas wells forecasting
• QUIZ - Performance Trend Analysis

• Introduction to Material Balance
• Material balance for oil reservoirs (overview)
• QUIZ - Introduction to Material Balance

• Material balance for oil reservoirs (net fluid withdrawal)
• Material balance for oil reservoirs (oil and dissolved gas expansion)
• Material balance for oil reservoirs (rock and water expansion)
• Material balance for oil reservoirs (gas cap expansion and total expansion)
• Material balance for oil reservoirs (the full equation)
• Material balance for oil reservoirs (terminology used)
• Material balance for oil reservoirs (solving for oil in place and aquifer size)
• Impact of drive mechanism - solution gas drive above bubble point
• Impact of drive mechanism - solution gas drive below bubble point
• Impact of drive mechanism - gas cap drive and natural water drive
• Summary of drive mechanisms as applied to material balance

• Material balance for gas reservoirs (Havlena Odeh method)
• Material balance for gas reservoirs (P over Z plot method)
• QUIZ - Material Balance for oil and gas reservoirs

• Using material balance models for prediction
• Summary of material balance techniques

• Analytical aquifer models - concepts
• Analytical aquifer models - Hurst and Van Everdingen (introduction)
• Analytical aquifer models - Hurst and Van Everdingen (total aquifer influx)
• Analytical aquifer models - Fetkovitch
• Analytical aquifer models - Carter and Tracy
• Summary of analytical aquifer models

• Introduction and objectives
• Well capacity or deliverability
• Flow regimes and time to reach the reservoir boundary
• Radial flow equations for oil

• Pressure drawdown analysis - overview
• Pressure drawdown analysis - skin calculation
• Wellbore storage concepts
• Wellbore storage estimation
• Wellbore storage calculation example
• Radius of investigation
• Fault boundaries

• Pressure buildup analysis - overview
• Pressure buildup analysis - superposition
• Pressure buildup analysis - Horner plot
• Pressure buildup analysis - Miller, Dyes, Hutchinson plot
• Pressure buildup analysis - reservoir pressure estimation using MBH method

• Dimensionless groups
• Type curves - overview
• Type curves - original and Bourdet derivative plots for radial flow
• Type curves - flow regime identification and non-radial flow
• Deconvolution overview
• Summary of data interpretation techniques
• Gas well testing
• Well test design and planning
• QUIZ - Well testing

• Introduction and reserves classification overview
• Reserves classification for discovered resources
• Reserves estimation methods overview
• Analogy and volumetric methods - concepts
• Analogy and volumetric methods - conditions and data required
• Material Balance method - overview and concepts
• Material Balance method - calculations for oil
• Material Balance method - calculations for gas
• Reservoir simulation method overview
• Performance trend analysis overview
• Decline curve analysis theory
• Decline curve analysis and WOR plots
• Reserves estimation summary
• QUIZ - Introduction to Reserves Estimation

• EXAM - Fundamentals of Reservoir Engineering