by

C.J. Campbell

Multi-Science Publishing Company & Petroconsultants S.A.

In the litigious society in which we now live, I have to include the following:

The views, descriptions, methods, analysis and comments in this book are presented solely for the purposes of study and review. Any references to persons, corporations or other organizations are fair comments made in good faith carrying no imputations of whatsoever nature. The author assumes no liability whatsoever for any loss or damage arising directly or indirectly from the material contained in this book. By notice hereby conveyed, persons purchasing, reading or using the book, or the material contained therein, are to understand that they do so solely at their own risk.

C.J. Campbell is hereby identified as the author of this work in accordance with Section 77 of the Copyright, Design and Patent Act, 1988.

For

Bobbins

Jack and Julia Anne and Patch Simon and Oddny

Emma and Clara

ACKNOWLEDGMENTS

This book is the outcome of a cooperative effort to which many people have contributed. I would like particularly to acknowledge the following:

Jean Laherr re has been a great help throughout, providing insights, many graphs, encouragement and friendship. He has been patient with someone almost devoid of mathematical skills.

Tom Jamison, Robert Harris, George Leckie Ken Chew, Jean-Michel Frautschi and Bogdan Popescu of Petroconsultants in Geneva have stimulated and encouraged the preparation of this book, being generous in releasing their precious data and insights, as well as contributing to its publication. It has been a pleasure...