5 days FOR/FTFPE
- Non-geologists and drilling professionals with no experience in petroleum geology.
- This course provides a practical understanding of petroleum systems, useful for integrating geological constraints and rock properties in drilling strategies which ultimately improve drilling models and reduce risk.
- Upon completion of the course, participants will be able to:
- review main components of a petroleum system,
- learn about most common facies rocks and their physical properties,
- grasp the scope and fundamentals of the petroleum trilogy,
- analyze deformations and constraints and to identify potential traps,
- deduce implications for drilling campaigns.
- No prerequisites for this course.
Ways and means
- Training includes classroom course with theoretical exercises and field trip observations in the Lacq gas province (Pau, South-West of France).
INTRODUCTION TO PETROLEUM GEOLOGY 2 days
- Basin and sedimentary rocks - Petroleum system:
- Sedimentary basin - Definitions, structure and terminology.
- Sedimentary rocks - Description and main facies - Comparison clastic versus carbonates - Sedimentary process.
- Petroleum system - Source rock, reservoir rock and seal rock - Trapping and migration process.
- Exercises: Interpretation of geological cross section, identification of the petroleum components, petroleum system building - Identification of potential prospects and implementation of 2 exploration wells. Analysis of limitations and drilling constraints.
FIELD TRIP IN THE PYRENEAN LACQ FIELD (active margin basin) 3 days
- Presentation of the Lacq Basin. Relations with the Pyrenean structure:
- Structural overview of the Pyrenean chain. Geomorphology and structural context.
- Lacq: a petroleum system in the Jurassic, lower cretaceous carbonate domain. Source, reservoir and seal rocks.
- Structure of the reservoir, trapping and potential hydrocarbon migration.
- Sedimentary study of the upper cretaceous clastic formation:
- The turbidites of St Jean de Luz:
- Detail of the sedimentary complex. Observation of the clastic deposits. Analysis of the deposit unit in a turbidite system (Bouma sequence) observation and comparison with carbonate series of the Lacq field.
- Analysis of the turbidites structure in St Jean de Luz. Syn and post sedimentary structures - Observation of “chair folding”. Dissymmetry of the folding. Notions of pressure/stretching (laminated flanks) and under compacted zones.
- Comparison with turbidities facies of Gan (South of Pau) - Notion of lateral facies variation - Conclusion.
- Synthesis and conclusions:
- Structural context of the Lacq gas field: An example of active margin basin in foothills domain.
- Elements of the Petroleum system of the Lacq gas field: an example of petroleum system in carbonate domain.
- The upper cretaceous turbidite system: interest of this facies analysis to understand the Pyrenean structure.
- Field observation of the turbidite series structure: interest and consequences for drilling purpose.