Oil and Gas
This course provides participants with the advanced skills and understanding required to analyse complex pressure transient tests. The methodology followed has become the industry standard, systematic way of interpreting well tests in homogeneous and heterogeneous reservoirs, including fissured and multilayered systems. Recommendations for designing tests in such formations are also addressed for oil, gas and multi-phase flow wells.
Duration and Training Method
This is a four day classroom based course, with problem solving sessions for practical experience and immediate application.
Participats will learn to:
- Evaluate, select and apply the appropriate diagnostic methods for analysing presssure transient data.
- Apply the appropriate well and reservoir models for analysis.
- Assemble the well and reservoir data needed to design a well test.
- Formulate and recommend well test objectives.
- Design a well test to achieve the desired objectives.
- Perform quality controls on test data.
The course aims to address a number of key topics in this area, but there is some flexibility in the formal itinerary depending on the groups preferences. The key topics that are covered include:
Objectives of well testing:
- Engineering of well performance
- Engineering of reservoir performance
- Reservoir characterisation
Information obtained from well tests:
- Well testing as a signal analysis problem
- Concept of interpretation models and their components (near wellbore, reservoir, boundary effects)
- Interpretation versus reservoir models
- Identification and verification of interpretation models
- Straight line analysis
- Log-log analysis
- Pressure derivative analysis
- Observation wells in interference tests
- Wellbore storage and skin
- Changing wellbore storage and different types of skin
- Hydraulically fractured wells
- Wells with, limited entry
- Horizontal and slanted wells
- Homogeneous reservoirs
- Double porosity and double permeability reservoirs
- Composite and multilayered reservoirs
- Fault, channel, wedge and baffle boundary effects
- Dry gas
- Gas condensate
- Mulitphase flow
Test design and practical test considerations:
- Data quality control
- Uncertainty in model choice
- Effects of uncertainty in input data
Who Should Attend and Prerequisites
The course is designed for mid to senior level Petroleum Engineers looking to further their knowledge in conventional reservoirs.
Professor Alain C. Gringarten holds the Chair of Petroleum Engineering in the Department of Earth Science and Engineering at Imperial College in London, where he is also director of the Centre for Petroleum Studies. Prior to joining Imperial College in 1997, he spent fourteen years with Scientific Software-Intercomp; five years with Schlumberger; and five years with the Bureau de Recherches Géologiques et Minières in Orléans, France, in various senior technical and management positions.
Dr. Gringarten is a recognized expert in well test analysis and received the Society of Petroleum Engineers (SPE) Formation Evaluation award for 2001, the 2003 SPE John Franklin Carll award, the 2005 SPE Cedric K. Ferguson certificate for the best technical paper published in 2004, and the North Sea SPE Regional Service Award for 2009. He was a SPE Distinguished Lecturer for 2003-2004. He has published over eighty technical papers and was responsible for many advances in well test interpretation. He was also an early pioneer of multidisciplinary studies, both in industry and in academia. His research interests include gas condensate and volatile oil reservoirs, fissured fluid-bearing formations, hydraulically fractured wells, horizontal and multilateral wells, high and low enthalpy geothermal energy, Hot Dry Rocks, and radioactive waste disposal.
Prof. Gringarten has taught numerous well test interpretation industry courses around the world and has been involved in many consulting projects through his company Well Analysis Limited. A member of the Society of Petroleum Engineers (SPE) since 1969, he was elected a Distinguished Member in 2002 and an Honorary Member in 2009. He has chaired or helped organize many SPE Advanced Technology Workshops, Forums and Conferences. He is currently a member of the SPE International committees on R&D; Information and Management; Carll-Uren-Lester Awards; and is the 2011 chairman of the SPE Talent Council.
Affiliations and Accreditation
PhD Stanford University - Petroleum Engineering
MSc Stanford University - Petroleum Engineering
Engineering Degree - Ecole Centrale, Paris, France
SPE - (Society of Petroleum Engineers)
N943: Well Test Interpretation in Practice