Book contents
- A Concise Guide to Geopressure
- A Concise Guide to Geopressure
- Copyright page
- Contents
- Acknowledgments
- Nomenclature
- 1 Introduction
- 2 Reservoir Pore Pressure
- 3 Mudrock Material Behavior
- 4 The Origins of Geopressure
- 5 Pore Pressure Prediction in Mudrocks
- 6 Pore Pressure Prediction: Unloading, Diagenesis, and Non-Uniaxial Strain
- 7 Pressure and Stress from Seismic Velocity
- 8 Overburden Stress, Least Principal Stress, and Fracture Initiation Pressure
- 9 Trap Integrity
- 10 Flow Focusing and Centroid Prediction
- 11 Flow Focusing, Fluid Expulsion, and the Protected Trap
- References
- Index
10 - Flow Focusing and Centroid Prediction
Published online by Cambridge University Press: 04 March 2021
- A Concise Guide to Geopressure
- A Concise Guide to Geopressure
- Copyright page
- Contents
- Acknowledgments
- Nomenclature
- 1 Introduction
- 2 Reservoir Pore Pressure
- 3 Mudrock Material Behavior
- 4 The Origins of Geopressure
- 5 Pore Pressure Prediction in Mudrocks
- 6 Pore Pressure Prediction: Unloading, Diagenesis, and Non-Uniaxial Strain
- 7 Pressure and Stress from Seismic Velocity
- 8 Overburden Stress, Least Principal Stress, and Fracture Initiation Pressure
- 9 Trap Integrity
- 10 Flow Focusing and Centroid Prediction
- 11 Flow Focusing, Fluid Expulsion, and the Protected Trap
- References
- Index
Summary
I have focused on interpreting pressure in one dimension (e.g., in a well profile). However, one of the most fundamental advances in the field of pore pressure prediction in recent years is the recognition that pressure distribution varies systematically and predictably in three and even four (time) dimensions as a result of the presence of permeable and laterally continuous beds (commonly sandstones) that are encased in low permeability mudrocks. In overpressured basins, these permeable bodies provide pathways that focus flow and perturb the pore pressure distribution. This process has been termed “flow focusing,” “lateral transfer,” and the “centroid effect.”
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- Information
- A Concise Guide to GeopressureOrigin, Prediction, and Applications, pp. 211 - 232Publisher: Cambridge University PressPrint publication year: 2021