This course utilizes the techniques for design and performance analysis of the production system starting from the formation up to the wellhead/separator. The topics include the production systems that integrate the flow of single-phase or two-phase fluids to wellbore and from wellbore bottom to wellhead/separator. This teaches various flow regimes and models to derive inflow performance relationships and vertical flow relationships, combination of which gives the well deliverability.
Course Objectives
- Identify the components of a complete production system and understand their functions, interrelationships, and effects on the performance of the system.
- Use production and test data to determine the inflow performances of oil and gas wells.
- Understand the basics of multiphase flow in pipes and use correlations to determine outflow performance of wells.
- Determine well performance by integrating inflow and outflow performance.
- Determine well performance with Electric Submersible Pump (ESP).
Learning Outcomes
- Use mathematics, science and engineering knowledge to study and understand production systems
- Predict inflow performance relationships (IPR), wellbore pressure profile and design vertical lift performance (VLP), including performance with ESP.
- Solve problems combining IPR and VLP.
Day 1
Petroleum Production Systems
- Introduction
- Components of the petroleum production systems
- Well productivity and production engineering
Well Performance from Undersaturated Oil Reservoirs
- Introduction
- Steady-state well performance
- Transient flow of undersaturated oil
- Pseudosteady-state flow
- Inflow performance relationships (IPRs)
- Examples with solutions
Day 2
Well Performance from Saturated Oil Reservoirs
- Introduction
- Two-phase flow in a reservoir
- Inflow performance from two-phase oil reservoirs
Models: Vogel, Fetkovich, and Standing
- Inflow performance relationships (IPRs)
- Examples with solutions
Well Performance from Natural Gas Reservoirs
- Introduction with Gas/PVT properties
Day 3
Well Performance from Natural Gas Reservoirs
- Approximation of gas well deliverability
- Gas well deliverability of non-Darcy flow
- Transient flow of a gas well
- Inflow performance relationships (IPRs)
- Examples with solutions
Production from Horizontal wells
- The Joshi Model and The Furui Model
- Examples with solutions
Wellbore Flow Performance
- Introduction
- Single-phase flow of an incompressible Newtonian fluid
- Pressure drop calculations with mechanical energy balance equation
- Single-phase flow of a compressible Newtonian fluid (gas well)
Day 4
Wellbore Flow Performance
- Two-phase flow in wellbore
- Two-phase flow regime maps
- Pressure gradient calculation:
Modified Hagedorn and Brown model, Beggs and Brill model, and Gray/Grifith model
Well Deliverability
- Introduction
- Generation of vertical lift performances (VLP)
- IPR and VLP of two-phase reservoirs and gas reservoir
- Performance with ESP (high and low GOR wells) and variable speed drive
- Examples with solutions
- Introduction to total system analysis
Selection of node and inflow & outflow analysis
Day 5
Conclusions and Post Test
