• Introduction to fault seal and trap analysis.
• Trap and fault geometry concepts and estimating closures and initial seal risk.
Exercise: Trap geometry and controls on hydrocarbon contacts.
• Methods and concepts on correctly characterizing faults and throw distributions. Theory and methods for evaluating correct fault linkages.
Exercise: Creating fault throw and separation maps.
• Fault zone architecture, mechanical stratigraphy and the influence on fault flow resistance.
• Fault population statistics.
Exercise: Plotting and deciphering fault population statistics.
• Review of fault rock types based on the undeformed host rock lithology.
• Basic principles of flow through porous media including permeability and threshold pressure.
Exercise: Estimating hydrocarbon gradients, capillary pressure and threshold pressure for reservoir and fault rock.
• Introduction to fault mapping.
Exercise: Generating juxtaposition Allan diagrams.
• Discussion on estimating sealing capacity from the threshold pressure for a range of fault rock types.
Exercise: Hydrocarbon column height exercise.
• Discussion of relative permeability impact on flow resistance across faults.
Exercise: Relative permeability exercise.
• Review of methods for estimating the clay distribution across a fault surface including clay smear factor, shale gouge ratio and effective shale gouge ratio.
• Discussion of techniques for calibrating relationships between fault rocks.
Exercise: Estimating the clay smear factor and shale gouge ratio along faults.
• Triangle diagrams for estimating fault seal.
Exercise: Triangle diagram
• Introduction to geomechanics for fault development and controls on slip.
Exercise: Critical stress Mohr-Coulomb exercise.
• Introduction to reservoir flow simulation and modeling fault flow resistance in development.
Exercise: Estimating flow resistance and transmissibility multipliers.
• Risking and uncertainty.
• Validation of methods and summary of course concepts
Fault Geometry and fault zone architecture
- Fault throw distributions and linkages.
- Fault geometry characteristics and dimensions.
- Development of fault zones and fault rocks.
- Interpretation Techniques and pitfalls
- Permeability and Darcy’s Law.
- Threshold pressure.
- Interfacial tension.
- Buoyancy force/capillary pressure.
- Relative permeability.
- Hydrodynamic seal.
Fault rock and properties.
- Description and deformation mechanisms.
- Flow properties of faults.
Fault mapping methods.
- Juxtaposition seal.
- Fault rock seal.
- Shale Gouge Ratio.
- Clay Smear.
- Effective shale gouge ratio.
Geomechanics as applied to fault seal.
Reservoir flow simulation with faults.
Applications of fault seal analysis in exploration and production.
- Predicting seal capacity.
- Risk and uncertainty.
The course is offered to geologists, geophysicists and petroleum engineers.
Although no prerequisites are required for this course, the concepts are more suited to geoscientists with experience in mapping and evaluating exploration and development projects.