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E-464 - Advanced Well Performance

  • Reservoir, well performance or production engineers and technicians
  • To provide the practical, comprehensive understanding and skills needed to master well performance and make significant contributions to field productivity studies and well performance monitoring
Learning Objectives
  • To acquire a practical understanding of reservoir, fluid properties, near-wellbore zone, well completion and facilities
  • To understand main remediation/stimulation and artificial lift methods
  • To model, forecast, assess, troubleshoot and optimize well performance
Ways and means
  • Use of the software program PROSPERâ„¢ (training license provided for the duration of the course)
  • Short lectures alternating with hands-on sessions
  • Course ends with a 2-day integrated case study

Introduction to production system 0.5 day
  • Introduction to well performance nodal analysis: inflow x outflow
  • Overview of PROSPER™ software workflow
  • PROSPER™: building initial well system file
PVT data / PVT modeling 0.5 day
  • Oil & Gas PVT properties: bubble point, Bo, Rs, GOR, solids…
  • PROSPER™: building PVT model
Reservoir properties & reservoir-wellbore interface 0.5 day
  • Reservoir rock & fluids: porosity, permeability, saturation, relative permeability, scales, corrosion
  • Reservoir behavior type
  • Pay zone drilling, completion (open hole, cased hole), perforating
  • Wellbore treatment: sand control, stimulations (acidizing, hydraulic fracturing)
Inflow performance / IPR modeling 1.5 days
  • Flow in the reservoir: Productivity Index (PI), empirical Inflow Performance Relationship (IPR)
  • Back pressure equation for gas wells
  • Global skin: formation damage, perforation, partial penetration, deviation
  • PROSPER™: IPR modeling exercise
  • Horizontal drains
  • PROSPER™: horizontal drain modeling
Wellbore flow, outflow performance / VLP modeling 1 day
  • Flow in the wellbore: pressure gradient and Vertical Lift Performance (VLP) curves
  • GLR, tubinghead pressure, tubing ID impacts
  • Monophasic vs. polyphasic flow: minimum flow rate / well loading
  • PROSPER™: tubing correlations, VLP modeling
  • Flow in a choke
Well performance 1 day
  • Well deliverability nodal analysis: inflow x outflow
  • PROSPER™: IPR + VLP natural flow well performance modeling, prediction and analysis vs. reservoir pressure, PI, GLR, BSW, tubing ID
Artificial lift 3 days
  • Gas lift: fundamentals, unloading procedure, surveillance and troubleshooting
  • PROSPER™: gas-lift design, prediction, analysis and diagnosis
  • Electrical Submersible Pump (ESP): components, design, problems
  • PROSPER™: ESP design, prediction, analysis and diagnosis
  • Rod pumping and jet pumps fundamentals
  • Comparison of the artificial lift methods
PROSPERâ„¢ case study 2 days
  • Application of PROSPER™ to one comprehensive case study, from PVT modeling and matching, IPR + VLP building and matching, to natural flow performance and gas-lift design / performance prediction