Book 55

Carbonate Reservoirs

by Clyde H. Moore, C H Moore, and Unknown

Published 1 January 2001
This comprehensive text and accompanying CD-ROM will provide the reader with an integrated overview of diagenesis and porosity evolution in carbonate petroleum reservoirs and ancient carbonate rock sequences. The initial chapters of this volume provide an overview of the carbonate sedimentologic system and the application of sequence stratigraphic concepts to carbonate rock sequences. The nature of carbonate porosity and its control by diagenesis is explored. Porosity classification schemes are detailed, compared, and their utility examined. The nature and characteristics of diagenetic environments and tools for their recognition in the ancient record are specified. The middle chapters of the book consist of a thorough examination of the major, surficial diagenetic environments, such as normal marine, evaporative marine and meteoric environments, emphasising porosity modifying processes illustrated by numerous case histories. There follows a summary of early diagenesis and porosity evolution couched in a sequence stratigraphic, climatic and tectonic framework. Predictive porosity/diagenesis models are developed.
The fate of early-formed porosity is explored in the burial diagenetic regimen in a tectonic framework. Factors controlling porosity destruction, porosity preservation and porosity enhancement are outlined and illustrated by case histories. The final chapter consists of three well-constrained economically important case histories that serve to summarise the concepts and exploration/production strategies developed earlier. The epilogue gives the reader a sense of the legacy of important earlier workers, the present state of the art and the author's sense of where the science of carbonate reservoirs needs to go in the future. The accompanying CD-ROM provides color versions of all diagrams/illustrations found in the text. This book should be useful to any geologist interested in carbonate sediments and rocks, and the porosity/diagenesis models will be particularly useful to exploration/production geologists. The book will be a good text for advanced carbonate courses at graduate level, and an appropriate reference book for graduate students working with, or interested in, carbonate rock sequences and sediments.

Carbonate diagenesis is a subject of enormous complexity because of the basic chemical reactivity of carbonate minerals. These carbonate minerals react quickly with natural waters that either dissolve the carbonates, or precipitate new carbonates to bring the water into equilibrium with the host carbonate sediments and rocks. These rock-water interactions either create porosity by dissolution, or destroy porosity by the precipitation of carbonate cements into pore spaces. Carbonate Diagenesis and Porosity examines these important relationships in detail. This volume is published in co-operation with OGCI, and is based on training courses organised by OGCI and taught by Dr. Moore. It is intended to give the working geologist and university graduate student a reasonable overview of carbonate diagenesis and its influence on the evolution of carbonate porosity. It starts with a discussion of the major differences between carbonates and siliciclastics so that the novice will have an appreciation of the basic nature of the carbonate system. Carbonate porosity, its nature and its classification is then discussed so that the relationship between diagenesis and porosity can be established.

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