ABOUT COURSE
This course stresses practical reservoir engineering concepts essential to predicting the performance of horizontal wells, with a special emphasis on:
- Role of geology in selecting optimum site for drilling a horizontal well
- Interpretation of pressure transient tests in oil and gas reservoirs
- Performance of Hydraulically fractured horizontal wells
- Performance of horizontal wells in Naturally fractured reservoirs
- Illustrate interpretation techniques by solving a large number of exercises
BENEFITS OF THE COURSE
At the end of this course, the participants will be able to do the following:
- Select optimum geological setting for horizontal well placement
- Interpret pilot-hole tests
- Understand the fundamental theory and applications of well test analysis to horizontal wells;
- Use modern techniques for analyzing drawdown and buildup test in Horizontal wells;
- Evaluate and forecast horizontal well production performance with and without hydraulic fractures
- Assess the productivity of Horizontal Wells
- Decide on whether to fracture a vertical well or drill a horizontal well
- Apply the knowledge and skills in their job assignments upon course completion.
WHO SHOULD ATTEND?
Petroleum and Geological Engineers who want to:
- know how to use geologic information to select the optimum site to drill a horizontal well
- Understand well testing principles unique to horizontal wells
- Apply advanced modern interpretation techniques to analyze complex problems related to the pressure behavior of horizontal wells in hydraulically and/or naturally fractured oil and gas reservoirs
- Know how to stimulate horizontal wells and assess post-fracturing performance.
- Use common interpretation methods for calculating productivity of horizontal wells.
Previous experience in basic reservoir engineering and basic understanding of fluid flow equations is helpful.
COURSE CONTENT
1. HORIZONTAL WELL GEOLOGY
- Overview of Horizontal Well Drilling & Completions (Video)
- Geological Aspects of Horizontal Wells
- Horizontal well applications
- Limitations of Horizontal Wells
- Conventional Analysis of a Vertical Pilothole -Test
- Modern Techniques for Evaluating Pilothole Test
- Partially Penetrated/Completed PilotHole
- Vertical Permeability from MDT
- Exercise
2. INTERPRETATION OF HORIZONTAL WELL TESTS
- Fundamentals of Well Test Analysis (Video)
- Analysis of a Pilot-Hole (Vertical) Well Test
- Partially Penetrating Well
- Flow Regimes and Analytical Solutions
- Flow Time Equations and Solutions
- Pressure Drawdown and Buildup Testing in HW
- Application of Pressure Derivative (Video)
- Analytical/TDS Technique for Horizontal Wells
- Determining Average Reservoir Pressure in HW
- Exercise
3. INTERPRETATION OF SLANTED WELL TESTS
- Effect of Slant on Pressure-Transient Responses
- Flow Regimes
- Models Used in Well-Test Analysis of Slanted Wells
- Skin and Pseudo-skin
- Wellbore Storage
- Calculation of Reservoir Properties
- Exercises
4. PRODUCTIVITY OF HORIZONTAL WELL
- Effect of Vertical Permeability on HW Performance (Video)
- Horizontal well versus hydraulically fractured vertical well
- Formation damage for horizontal wells
- Matrix stimulation
- Steady-State Flow Equations of horizontal wells
- Unsteady-State Flow Equations
- Horizontal Well Productivity
- Effective Wellbore Radius for Horizontal Oil Wells
- Effect of Formation Damage on HW Productivity
- Pseudo-steady state flow Equations and Solutions
- Pseudo-steady State Productivity Calculation Methods
- Shape factor of horizontal wells
- Coning in Vertical & Horizontal Wells
- After Breakthrough Performance
- Exercise
5. PERFORMANCE OF STIMULATED HORIZONTAL WELLS
- Fundamentals of Stimulation: Fracturing, Acidizing (Video)
- Objectives of Hydraulic Fracturing
- Limitations of Hydraulic Fracturing in Vertical Wells
- Matrix Stimulation/Hydraulic Fracturing
- Performance of Hydraulically Fractured Horizontal Wells
- Objectives and Practical Considerations Prior to Fracturing
- Post-Frac Conventional Pressure Testing
- Application of Modern WTA Techniques in Fractured Wells
- Finite Conductivity Fracture
- Productivity of Multi-Fractured Horizontal Well
- Exercises
6. HORIZONTAL WELLS IN NATURALLY FRACTURED RESERVOIRS
- Properties of Naturally Fractured Reservoirs (Video)
- Objectives of HW in Naturally Fractured Reservoirs
- Types and Evaluation of Naturally Fractured Reservoirs
- Analysis of a Pilot-Hole (Vertical) Well Test
- Pseudo-steady state and matrix flow in Horizontal wells
- Anisotropic Reservoirs
- Elliptical Flow
- Average Reservoir Pressure of NFR
- Exercises
7. HORIZONTAL WELLS IN GAS RESERVOIRS
- Gas Reserves: Volumetric Methods, Material Balance Methods
- Unsteady State Flow Equations
- Real-Gas Pseudo Pressure, Non-Darcy Flow Equations
- Pressure and Pressure Squared
- Converting Pressure to Pseudo-pressure
- Analysis of a Pilot-Hole Gas Well Test
- Hydraulically Fractured Pilot Hole Test
- Productivity of Horizontal Gas Wells
- Pseudo-steady State Gas Flow Equations for HW
- Steady State Gas Flow Equations for HW
- Exercises
"Este curso hace parte del programa especial de capacitación: Diplomado en Ingeniería de Yacimientos". La participación en el diplomado es opcional y no constituye un requisito para tomar este curso.