There has never been a lack of oil in the world. By using advanced extraction methods and with higher oil prices, economically accessible reserves are increasing. Because of the new technologies, which I discuss in detail in this book, these reserves continue to increase. Up to now, an average of 20 to 30% of the original oil present in the ground is recoverable. This percentage could rise to 50 to 60%. Production from structures that were previously unproductive is now and continues to become possible. This will lead to hundreds more years of oil extraction.This book is about oil. But gas reserves (the invisible gold) have also increased sharply, in part due to new technologies, and have more than doubled since 1980 with an average increase of 3% per year. This will provide 253 years of production at current production levels.It should also be mentioned that this doesn't take into account new future discoveries and adjusted reserves, which there are sure to be.Contents1 Introduction 132 The origin of oil and gas and how to find it 293 Geology in a nutshell 394 Reserves 495 The facts 616 The "Seven Sisters" (1940 - 1970) 777 The marriage between two sisters 1058 Drilling operations 1179 Production 13710 Other energy sources 16911 Offshore 19312 Peak oil and mega finds 22313 The oil price 23314 L'Addition 23915 Important dates in oil history 26716 A few more things 279