Basic Well Test Analysis

Course Description

Well testing of oil, gas, and water wells is the technology that has been effectively used since the start of the oil business over century ago. Well test analysis/interpretation is considered one of the most effective reservoir management tool to help in maximizing well productivity, enhance the expected ultimate recovery of hydrocarbons, and also in devising the fields development plans. This courses offers the foundation of this techniques which covers the theory in a concise fashion and the emphasis is on the practical applications using numerous actual well tests data and the application of the analysis results (using commercial software) for field development.

Course Objectives

  1. Provide good understanding of what goes on inside the black box (software) before starting well testing.
  2. Provide appreciation of well test design before commencing with testing to ensure conclusive results are obtained.
  3. Offering step-by-step on how to analyze various types of well testing with emphasis on understanding data quality.
  4. Well test analysis is a mix of science and art which is foundation of well test interpretation.

Course Outline

  • Review of the flow equations: Equation of state, Darcy and continuity equation; Common flow geometry
  • Dimensionless parameters: definitions and Type Curve use/applications
  • Boundary conditions: infinite, Pseudo- steady state and steady state
  • Solution of the diffusivity equation: (class problem)
  • Build-up test analysis: Principle of Superposition, Horner Plot; average reservoir pressure (MBH) method (class problem); Reservoir boundaries and channel analysis
  • Wellbore skin factor and partial penetration (class problem)
  • Wellbore storage: use of type curves (class problem)
  • Draw-down testing: Application and test analysis and equivalent time; Reservoir Limit Testing (case study - fractured basement)
  • Hydraulically fractured wells
  • Fracture characterization (frac. half-length, conductivity and orientation)

Participants’ Profile

Engineers and geologists who are or will get involved in well testing and its applications for field development. All levels are welcome


Some background in reservoir and production engineering will be helpful.

About the Instructor

Saad Ibrahim, P.Eng., an independent consultant and president of Petro Management Group Ltd., established in Calgary (1994). Graduated from the University of Alexandria (Egypt) with B.Sc. in Mechanical Engineering in 1973. He also completed a post-graduate program with the University of Calgary, Canada, in Chemical and petroleum engineering in 1983.

He has over 35 years of reservoir/production engineering experience in Western Canada (with Amoco, BP and Husky) and internationally in Yemen (with Nexen Petroleum International Ltd.), Algeria, Libya, Tanzania, Iraq, Egypt, Turkey, Venezuela, Argentina, Ecuador, Peru, Kazakhstan and Uzbekistan. The focus of his experience lies in the area of reservoir management and well-test planning/analysis. Saad Ibrahim has lectured regularly for the Society of Petroleum Engineers (SPE), in Calgary, Moscow and Muscat (Oman). He also offered numerous public and in-house training course worldwide and published recently a technical paper titled “Performance Evaluation of Multi-stage Frac of Horizontal Wells MFHW’s”, for the Oil and Gas Expo & Conference in Calgary. He was further on the Reserve Panel of the 4th International Conference in Calgary on Horizontal Well Technology. He is a member with the APEGA and SPE.