Book contents
- Quantitative Analysis of Geopressure for Geoscientists and Engineers
- Quantitative Analysis of Geopressure for Geoscientists and Engineers
- Copyright page
- Contents
- Preface
- 1 Basic Pressure Concepts and Definitions
- 2 Basic Continuum Mechanics and Its Relevance to Geopressure
- 3 Mechanisms of Geopressure
- 4 Quantitative Geopressure Analysis Methods
- 5 Seismic Methods to Predict and Detect Geopressure
- 6 Integrating Seismic Imaging, Rock Physics, and Geopressure
- 7 Methods for Pore Pressure Detection
- 8 Gravity and EM Field Methods Aiding Pore Pressure Prediction
- 9 Geopressure Detection and Prediction in Real Time
- 10 Geopressure Prediction Using Basin History Modeling
- 11 Geohazard Prediction and Detection
- 12 Petroleum Geomechanics and the Role of Geopressure
- 13 Guidelines for Best Practices
- 14 Recent Advances in Geopressure Prediction and Detection Technology and the Road Ahead
- Book part
- References
- Index
5 - Seismic Methods to Predict and Detect Geopressure
Published online by Cambridge University Press: 10 February 2021
- Quantitative Analysis of Geopressure for Geoscientists and Engineers
- Quantitative Analysis of Geopressure for Geoscientists and Engineers
- Copyright page
- Contents
- Preface
- 1 Basic Pressure Concepts and Definitions
- 2 Basic Continuum Mechanics and Its Relevance to Geopressure
- 3 Mechanisms of Geopressure
- 4 Quantitative Geopressure Analysis Methods
- 5 Seismic Methods to Predict and Detect Geopressure
- 6 Integrating Seismic Imaging, Rock Physics, and Geopressure
- 7 Methods for Pore Pressure Detection
- 8 Gravity and EM Field Methods Aiding Pore Pressure Prediction
- 9 Geopressure Detection and Prediction in Real Time
- 10 Geopressure Prediction Using Basin History Modeling
- 11 Geohazard Prediction and Detection
- 12 Petroleum Geomechanics and the Role of Geopressure
- 13 Guidelines for Best Practices
- 14 Recent Advances in Geopressure Prediction and Detection Technology and the Road Ahead
- Book part
- References
- Index
Summary
Seismic velocity is a very useful tool for pore pressure prediction prior to drilling a well. This chapter identifies various sources of velocity data - checkshot, VSP, well logs, laboratory, and seismic measurements. The goal is to obtain velocity variations in 3D that not only reflect the subsurface structures in depth but also convey the expected range of velocity variations that is compliant with rock physics principles, structural geology, and stratigraphy of formations and geopressure. This chapter discusses various ways to obtain velocity data for pore pressure analysis and points out how to establish a link between seismic traces that are recorded in "space and time" and the "space and depth" that are required by the drilling community. It stresses that the seismic model building step must deal with separating imaging velocity from the velocity that is close to rock velocity.
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- Publisher: Cambridge University PressPrint publication year: 2021