The primary focus of this book has been on oil exploration and specifically working on an oil rig. The global dependence on oil and related products as the primary energy source is expected to continue well into the foreseeable future. Oil companies supported by national governments spend huge sums of money on geological surveys and other exploratory efforts to find new locations of oil wells deep under the sea. Technology to extract the oil is constantly being developed and the bigger rig companies devote a large portion of their annual budgets on finding more efficient and safer ways to drill for oil. Despite the mishaps that have occurred over the years, this industry is here to stay which is excellent news for those who would like to make it their career choice.