First session: Pore Pressure Theory (2hrs)
- Pore pressure and abnormal pressure – typical profiles
- Overpressure generation mechanisms
- Pore pressure prediction methods
- Relationship to fracture gradient and WBS models
- Well planning
Second session: Application of Pore Pressure Prediction to Unconventional Resources (2hrs)
- Pressure measurements in tight rocks (sparse data, DFITs, SHmin, drilling data)
- Difficulties in pressure detection
- Identifying shales – ‘Shale-rich’ and the fact that 'sands' to 'shales' is far less clear in unconventionals so the practitioner needs to be more open to using multiple facies rather than just 'shales'.
- Understand burial histories
- Understand TOC (RP models, TOC estimation methods)
- Methods for prediction (Vs, Rho, Vp-VES)
- Integrated workflows for property prediction
Third session: Case studies (2hrs)
- Ultra-deep and Ultra-safe: Combining facies predictions and PPFG well planning for the ultra-deep water Ayame-1X exploration well, Côte d’Ivoire (Edwards et al., 2017) – An example of conventional pore pressure prediction and the importance of integrated workflows for well planning.
- Using Traditional Methods to Predict Pore Pressure in Devonian Black Shale Basins of North East British Columbia (Green et al., 2018) – An example of using non-traditional approaches to estimate pore pressure prediction in unconventional plays.
- Seismic-based de-risking of unconventional plays by integrating rock physics, inversion, geopressure, and geomechanics (Green et al., 2018) – Highlights the value of building robust, high fidelity elastic property models for a complete understanding of the 3D pressure and stress variation leading to safer, more efficient drilling campaigns.
- Can Seismic Inversion Be Used for Geomechanics? A Casing Deformation Example (Meyer et al., 2018) – Highlights the value of truly integrated workflows in order to build more robust geomechanical models to help improve well performance.