This handbook is has been compiled to give readers with an interested in the oil and gas production industry an overview of the main processes and equipment. When I started to search for a suitable introduction to be used for new engineers, I discovered that much of this equipment is described in standards, equipment manuals and project documentation. But little material was found to quickly give the reader an overview of the entire upstream area, while still preserving enough detail to let the engineer get an appreciation of the main characteristics and design issues.

The Deepwater Horizon oil spill accident (variously referred to as the BP oil spill/disaster or the Macondo blowout) commenced on April 20th, 2010 on the BP-operated Macondo Prospect drilling platform. The ensuing fire aboard the drilling platform claimed eleven lives. Following the explosion and sinking of the fl oating oil rig, a sea-fl oor oil gusher fl owed for 87 days, until it was capped on July 15th, 2010. Th e total discharge has been estimated at 4.9 million barrels (780,000 m3), and the event was considered by some authorities to be the largest accidental marine oil spill in the history of the petroleum industry. 

The aim ofthis book isto provide a clear,up to date text coveringthe principles of oilwelldrilling engineering. It is the author's contention that it is necessary to start from first principles in order to give both student and practising engineer a compre!tensiveunderstanding of the subject. Hence, no prior knowledge of any topic is assumed, and all the necessary equations and calculations required in well design are presented. Full derivation of most equations isincluded, to enable both the engineer and the scientist to appreciate the limitations of the equations, and to allow the researcher to incorporate further refinements.

One of the results of the Danmark Expedition has been a very considerable and important extension of onr knowledge with regard to the marine, Jurassic and Cretaceous deposits of East Greenland and thus of the Arctic zone as a whole. The Expedition brought home a very complete material of these deposits, from regions whose geological structure had hitherto been quite unknown or only very imperfectly studied. This material was intrusted to me for investigation by the Committee for the Danmark Expedition, and as it proved to have come from deposits which were almost all younger than the Jurassic deposits investigated by the Danish expeditions of 1891-92 and 1900, in regions of East Greenland somewhat further south, and as no material for comparison existed in Copenhagen, the Committee voted me the necessary hinds for a journey to Munich. Here Professor Rothpletz with the greatest willingness permitted me to use the rich collections of the Pakeontological Museum there for comparison, and 1 would express my best thanks to him here for this permission. - On the return journey from Munich I made a short stay at Gottingen, where the well-known expert on the Jurassic deposits of the Arctic regions, Professor Pomi*kckj, was so kind as to look through a part of my material, especially the Ammonites. For the suggestions and information Prof. Pompkckj gave me on this occasion I am extremely indebted to him. As, further, a number of species occurred in the material, which had earlier been described by Tullbkho and Lunbobkn from the Jurassic deposits of Nova Zemhln and Spitzbergen, I desired to compare my material with theirs and journeyed to Stockholm on my return from Germany. For the friendly permission given me there to make the comparison, it is a pleasant duty to tender my best thanks to Professor G. Holm, the Director of the Zoopabontological Department of the Riksinuseum.