This presentation demonstrates how 3D seismic data will contribute significantly to the understanding of the Marcellus.
Tony Rebec examines the Marcellus shale as revealed with full 3D multi-component seismic data including the dataset used for the examination and will discuss the geophysical strategy used to reveal the properties and attributes of this unique shale formation.
Topics include:
- Introduction to the Marcellus Shale/data
- Vertical Calibration & Resolution
- Spatial Resolution & Geometric Attributes
- Anisotropic/Rock Property Attributes
- Density and Orientation of Micro-fractures
- Physical Basis
- Velocities dependence on fractures’ direction
Orientation
Velocity Ellipse
- Difference between fast and slow velocities (anisotropy) is a measure of fracture density
- Elliptical Inversion (EI) to estimate anisotropy
- Conclusions