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E-217 - From Prospect to Development: an Integrated Approach

10 days BAS/PROSPECT
Level
Proficiency
Audience
  • Geologists, geophysicists, reservoir engineers
Purpose
  • To provide the knowledge and skills required to assess and move forward with field studies; from discovery, through appraisal, and on to development, always looking for the best scenario of all
Learning Objectives
  • To acquire state-of-the-art exploration methodology and workflow for prospect definition and to evaluate related probability of success
  • To identify the link between exploration workflow (leading to the discovery well) and field development stages, while evaluating field potential (at each step of the process)
  • To acquire practical knowledge of both appraisal and development workflows using a real case study
Ways and means
  • Exercises and case studies on real examples
  • Group workshop on development case histories

Week 1: Basin analysis to prospect evaluation - From play to prospect 5 days
Introduction to petroleum system & basin analysis
  • The participants are going to complete a mini-project on a real case study
  • From a seismic line, the participants carry out a short basin analysis using log data
  • They will have to elaborate the “plays” existing in this basin and then proceed to the prospect analysis
  • Basin potential assessment
  • Regional context - Petroleum trilogy
  • Play definition
Risk analysis
  • Geological risk (reservoir, trap, HC conservation) Fluid content risk (Source rock, maturation, migration, timings)
  • Probability of success - Consequences for economics
Basin assessment and prospect evaluation
  • Assessing the potential of basin
  • Petroleum trilogy
  • Traps
  • Timing of migration versus trapping
  • Seismic interpretation
  • Well data interpretation
  • Cross correlation & integration with seismic data
  • Prospect definition
  • OHIP calculation
  • Uncertainties

Week 2: Oil field development - From discovery to production start 5 days
Introduction to E&P workflow
  • General presentation of the different steps of an oil field development project
  • Reminder of concepts, tools, methods, necessary data to work with and how to reduce inherent subsurface uncertainties
  • Illustration through a case history (onshore field, light oil)
Discovery
  • Geological and tectonic context of the field
  • Seismic interpretation issues
  • Evaluation of the discovery well. Uncertainties
  • Proposals for location and program of the first appraisal well
Appraisal phase
  • Evolution of subsurface uncertainties (structural maps, OHIP estimations, etc.) with new data from appraisal wells
  • Updating of the issues after each appraisal well
  • Definition of data acquisition programs for each well
  • Date synthesis at the end of the appraisal phase and OHIP estimations
Engineering studies
  • Estimations of reserves, production profiles through simplified methods and a full field simulation
  • Estimations of CAPEX, OPEX, technical costs of different development scenarios
  • Comparison of production forecasts with actual field production history