This course is designed for geoscientists keen to develop skills in play analysis and basin modelling. It reviews global basin types, looking at both successful and unsuccessful exploration campaigns from around the world, their success ratio and the dominant play types. The course then reviews the workflow to assess a new basin, key input data and techniques used to characterise the petroleum systems and plays, and ultimately develop leads and prospects.
It is aimed at honing the analytical skills to evaluate petroleum systems and their hydrocarbon potential, and to learn from examining global analogues. It reviews the important control that basin formation and mechanisms have on the petroleum system, examining subsidence, heat flow, structural style, evolution and sedimentation. Global examples of typical basin types are examined with emphasis on the impact that basin style and sedimentation have on the hydrocarbon habitat and prospectivity. Within each basin, depositional systems are reviewed, and the control on reservoir, source, seal and trap are discussed.
Course Level: Skill Instructor: Jonathan Redfern
Designed for you, if you are...
An exploration or new ventures geologist
A geophysicist early in your career
Basic geological knowledge is assumed. Some introductory experience is required, with knowledge of the basics of petroleum geology, and some seismic and well log interpretation experience.
How we build your confidence
Extensive case studies are discussed from around the globe, highlighting the development of new play types that have opened up basins, in areas such as the North Sea, East Africa, South America and North Africa. How were these plays developed? How can we learn from this? We also look at the errors made in chasing the wrong play because the petroleum system was not fully evaluated.
The course then builds by developing techniques to evaluate the petroleum systems and develop plays, leads and prospects, including an introduction to seismic facies analysis, correlation techniques and sequence stratigraphy, source rock studies and basin modelling, and evaluating the potential plays by mapping using gross depositional evaluation (GDE) maps and developing common risk segment (CRS) maps.
Emphasis is placed on practical interpretation of data for play analysis, with coursework designed to reinforce the theory lectures and provide access to a variety of data types. Exercises involve interpretation of seismic and wireline log data, with examples drawn from basins around the globe: North Africa (Libya, Algeria, Egypt, Morocco), Indonesia, Malaysia, North Sea, Australia, Italy, Arabia, South America.
During the course, lectures and practical exercises are used to teach techniques to evaluate the basin type and interpretation of seismic and well log data. These cover the fundamentals of stratigraphy, seismic facies analysis and an introduction to basin modelling.
By the end of the course you will feel confident in your understanding of:
Focusing on the influence basin formation mechanism has on subsequent petroleum systems, how the mechanism of formation controls the structural style and sedimentary fill
How to recognise different basin types from typical seismic and well log data
Key controls including tectonics, climate and eustacy
Petroleum systems active on a number of global basins
Case studies of basin plays, how new play types have been developed that have rejuvenated basins, and the flaws of chasing the wrong play, or a step too far
Key techniques to analyse sedimentary basins including - Source rock characterisation, organic matter types, global source distribution - Analysis of different data types to generate key input data for maturity and migration modelling - Hydrocarbon types and distribution - Controls on migration - Becoming familiar with basin models and the input data required - Calibrating basin models - Understanding uncertainty and sensitivity of the models - Introduction to techniques to analyse the petroleum system - Seals – fault and formation seals - Reservoirs - Trapping styles - How to produce Gross Depositional Element Maps - Common Risk Segment Mapping
Plate tectonics and mechanisms of subsidence
Basin formation and basin classification
Basin analysis techniques (interpretation of seismic and well data)
Review of basin by type: - Extensional / rift basins - Compressional / foreland basins - Passive margin basins - Arc type basins - Strike slip basins
For each basin type the following is reviewed:
Structure / tectonic evolution and controls on depositional style
Role of tectonics, climate and eustacy
Typical facies suites and sedimentary environments
Typical seismic expression
Analogue petroleum systems and plays
Techniques of Analysis
Stratigraphy and correlations
Building plays and learning from global analogues
Critical Elements Charts and Chronostratigraphic Charts