Introduction
A profitable development of an oil or gas field starts with a good understanding of the subsurface. As part of a petroleum engineering team the petroleum geologist interprets subsurface data and provides geological models that form the basis for development planning. Additionally, he/she analyses and predicts subsurface reservoir targets, pressures and stresses, which form the basis for well planning and design. He/she therefore also contributes to the safety of drilling operations. The geologist updates the subsurface models during the production phase of the fields. It is therefore important that all these activities are done as integrated teamwork involving all petroleum engineering disciplines, drilling, facilities engineering as well as economics.
Course Objectives
At the end of the course participants will understand the principles of oil and gas generation, migration and trapping. They will be introduced the exploration processes and tools, learn the basics of rock properties, well log evaluation and log correlation. They will be able to apply geological concepts, construct maps and sections and use geological and geophysical data to make subsurface evaluations and to calculate oil and gas volumes.
They will learn how to prepare a well proposal and how to make a basic casing design based on subsurface pressures.
They will understand the field appraisal and development process and will acquire practical experience by working on an actual field development plan in teams. Production facilities and costs will be briefly discussed, to allow economic assessment of their project at the end of the course.
Who Should Attend?
Petroleum engineers, well-site engineers, geologists and geophysicists at the start of their careers.
Course Outlines
The energy business, development projects, geology concepts
- Scope of the energy / oil & gas business
- History of the oil & gas business, technology breakthroughs
- Major players in the industry
- Activities in E&P
- Global energy resources
- Oil price review and scenario’s
- Global issues, PR and environment
- General process of oil & gas development projects, project life cycles
- Team exercise: Offshore Field Development Project 1: Commercial, Environmental and PR issues, Exploration bid proposal. Given a description of the project activities and the geographical environment, make an outline of a bid proposal
- Concepts of petroleum geology: Hydrocarbon basins, plays, plate tectonics, sedimentary cycles and sequences, sequence stratigraphy, origin of hydrocarbons, source rocks and maturity, hydrocarbon traps
- Seismic principles: data gathering, processing and interpretation
Exploration, subsurface models: appraisal, drilling, well data.
- Exploration tools, basin analysis
- Drilling process, horizontal wells, risks
- Offshore field exercise 2: field appraisal planning
- Log and core data, reservoir properties, reservoir maps
- Offshore field exercise 3: Discussion of appraisal results, correlation of appraisal wells
Subsurface models: structural styles, sedimentary environments, pressures
- Structural styles, traps, seals, structural maps and sections
- Offshore field exercise 4: structural map based on seismic and appraisal wells
- Sedimentary environments, sedimentary models, reservoir mapping exercise
- Offshore field exercise 5: Net sand calculation from logs, net sand mapping
- Subsurface pressures
Volumetrics, surface development options, well completions
- Offshore field exercise 6: pressure analysis, fluid contacts
- Reservoir fluid properties and pressures, reservoir engineering
- Volumetric calculations, subsurface uncertainties
- Offshore field exercise 7: field volumetric calculations and uncertainties
- Subsurface development planning, well completion technology
Surface development options, project economics
- Faults, fault seal analysis
- Offshore field exercise 8: subsurface development options
- Carbonate reservoirs
- Production facilities and operations
- Basics of project economics
- Offshore field exercise 9: Project conclusions, economic calculations and economic effects of (subsurface) uncertainties
- Course review and round-up