Well Testing & Well Test AnalysisRENG/WELLTEST

Who should attend?

  • This course provides a comprehensive and practical understanding about performing set-up, design and analysis of well tests.
Audience :
  • Newly-hired and 2- to 3-year experienced reservoir engineers willing to deepen their knowledge in reservoir fluid properties and PVT modeling. It is also intended for geoscientists, petroleum engineers and production engineers moving towards reservoir engineering.

Level : Proficiency

Course Content

  • INTRODUCTION TO WELL TESTING, BASIC EQUATIONS & METHODS

      • Objective of well testing.
      • Practical well test operations: types of tests, equipment, safety and environmental issues.
      • Definitions and typical flow regimes: radial flow, fractured reservoirs, limited reservoirs and closed reservoirs.
      • Productivity Index (PI), radius of investigation.
      • Darcy's law and the diffusivity equation.
      • Time superposition, multirate testing.
      • Space superposition, boundary effect.
      • Pressure curves analysis.
      • Pressure derivative curves analysis.
  • WELLBORE CONDITIONS

      • Wellbore storage and skin effects.
      • Infinite and finite conductivity vertical fracture.
      • Well in partial penetration.
      • Horizontal well.
      • Skin factors, geometrical skin and well deliverability.
  • RESERVOIR HETEROGENEITIES

      • Double porosity models: pseudo-steady state and transient state models.
      • Double permeability models.
      • Composite reservoir models.
  • BOUNDARY MODELS

      • One sealing fault model.
      • Two parallel sealing faults model/two intersecting sealing faults model.
      • Closed system model and reservoir limits testing.
      • Constant pressure boundary model.
  • TEST DESIGN - HANDS-ON SESSION

      • Rate history definition.
      • Time and pressure error.
      • Changing wellbore storage.
      • Phase segregation.
      • Interpretation procedure.
      • From the initial diagnosis to the final consistency check of the results.
      • Reporting and presentation of results.
      • Examples of test response.
  • GAS WELLS: REVIEW & APPLICATIONS

      • Hypothesis for gas wells testing. Darcy and non-Darcy flow.
      • Pseudo-pressure and inertial effects.
      • Gas wells deliverability:
      • Absolute open flow potential.
      • Houpert method.
      • Back pressure tests. Isochronal tests. Modified isochronal tests.

Learning Objectives

  • Upon completion of the course, participants will be able to:
  • discuss the theory of well test analysis,
  • identify main flow regimes and models,
  • carry out simple well test analysis,
  • define or recommend a well test design.

Ways & Means

  • Interactive lectures and exercises.
  • Hands-on practice based on synthetic and real data using hand and spreadsheet calculations and SAPHIR™ dedicated industrial software.