Introduction of Rock Physics To Support Quantitive Seismic Interpretation

This course focuses on the construction and application of first-order models in seismic amplitude interpretation and through this promotes the understanding of the essential aspects of rock physics that are relevant in interpreting all types of seismic displays (including reflectivity, impedance and AVO data).

• Employ simplifications to the Zoeppritz equations and understand why they are useful in describing the variation of amplitude with offset, and how they are used in seismic modelling and interpretation.
• Categorise AVO responses.
• Appreciate how various rock property factors (such as lithology and fluid fill) affect the contrasts in acoustic properties that give rise to seismic signatures.
• Construct simple single-interface amplitude-versus-angle models and determine first-order effects to look for on various seismic displays.
• Calculate the vertical resolution of seismic data.
• Recognise the importance of calibration of seismic to well data, including the issues involved in upscaling log data to the seismic scale, and appreciate the importance of understanding accuracy in well ties.
• Recognise the data sources used for building seismic models and understand the basics behind the application of rock physics models in fluid and lithology substitution.
• Apply Gassmann’s equation to evaluate the effect of changing fluids on acoustic properties.
• Comprehend the basics of seismic inversion and the potential pitfalls.
• Understand the basics behind the various approaches to AVO analysis:
• Construct an AVO projection designed to optimise changes in fluid fill.