Elements of Rock Physics and Their Application to Inversion and AVO Studies

Robert S. Gullco, Malcolm Anderson

• Publisher: CRC Press
• Year: 2022
• ISBN:
  9781000539301
• Edition: 1
• Topic: Physical Sciences
• Subtopic: Geology & Earth Sciences

The ultimate aim of the oil exploration industry is to determine the distribution of rock types and underground fluids. At this stage, we can actually determine the distribution of several underground physical properties with a certain accuracy. The challenge for the rock physicist is to translate those physical properties (P-velocity, S-velocity, density) into rock types and fluids (gas-, or oil-, or water-bearing sand, shale). If performed correctly, dry holes can be avoided and millions of dollars can be saved. Ultimately, an integrated approach is required. This book deals with a series of topics in rock physics, including elasticity, pore pressure, incompressibility of rocks and the Gassmann equation, fluid substitution, forward modelling and empirical equations, rock physics applications to AVO studies and inversion studies, and the Differential Effective Medium (DEM) method. It is generally addressed to the practitioner (geophysicist, geologist), and in some instances, detailed instructions are furnished to perform a particular task. Some chapters, on the other hand, are theoretical and more mathematical, and are expected to be of interest to both practitioners and students alike. Other chapters include innovative ideas that could, for instance, be tested by oil companies that have substantial amounts of data at their disposal.

This book will serve as a useful guide to practitioners (geologists, petrophysicists, geophysicists and reservoir engineers) and students/academics.

Table of contents

• Cover
• Half Title
• Title Page
• Copyright Page
• Table of Contents
• About the authors
• Introduction
• 1 Petrophysics review
• 2 Elements of elasticity theory
• 3 Pore pressure review
• 4 Incompressibility of rocks and the Gassmann equation
• 5 Fluid substitution
• 6 Forward modelling and empirical equations
• 7 Applications of rock physics to AVO analyses
• 8 Applications of rock physics to inversion studies
• 9 Modelling carbonates using Differential Effective Medium theory