Rock physics modelling is required to:
-
understand from seismic and well data if there are extensions to existing accumulations or indeed undiscovered ones
- resolve seal integrity issues
- place wells optimally within the best quality reservoir rock or oil leg below gas
- anticipate drilling hazards
As
a discipline, rock physics establishes a relationship between the
seismic signal and the petrophysical properties in the subsurface.
Through this connection, we seek to “extract” information about the
petrophysical and geometrical properties, which give rise to the
recorded and observed seismic signal. We then use this information to
describe the character of the reservoir in three dimensions away from
well control, and with this, answer the questions posed above.
Rock
physics requires a knowledge and understanding of geophysics,
petrophysics, geomechanics and the causes of the distribution of fluids
in the subsurface. Competences in well log analysis, core measurement
and analysis, elasticity theory, wave propagation and energy
partitioning, signal analysis and seismic processing, and seismic
geomorphology are all essential tools for the rock physicist.
In
Senergy, we combine all these tools to perform a thorough rock physics
analysis to determine the petrophysical parameters that control the
reservoir quality, defining a strategy that allows the extraction of
these parameters from seismic data.
Where grid mapping and
geostatistical methods fail to describe the inter-well character of the
subsurface, rock physics combined with seismic characterisation
techniques is the best quantitative tool we have at our disposal to
reduce uncertainty and unlock the commercial potential of our assets.
Our Rock Physics Capabilities include:
- Multi-well, multi-mineral, multi-fluid petrophysical evaluation for Rock Physics
- Resolution Analysis
- Fluid Substitution and Seismic Modelling
- Shear wave velocity prediction
- Crossplot Analysis for lithology/ fluid identification
- 1D synthetic seismic modelling for Velocity Modelling and Depth Conversion
- 2D Synthetic Modelling for AVO/Inversion
- Simultaneous AVO/AVA inversion
- Seismic trace shape modelling and seismic facies analysis
- Pore Pressure Analysis
- Fracture Detection
- Rock Physics Based Seismic Pre-Conditioning for AVO/AVA/Inversion
- 4D Synthetic Modelling and Inversion