|About the Book|
This series covers the entire scope of rotary drilling operations in five units of technical information and review questions. These units are published in cooperation with the International Association of Drilling Contractors. In some cases, previous editions are available in Spanish, while supplies last, for $14. Open-book comprehensive tests covering Units I, II, III, and V of the Rotary Drilling Series are available.This lesson replaces The Hoist in the series. It presents detailed information on the drawworks, including clutches, transmission, sprockets, drum, and brakes. All measurements are given in both U.S. and SI units. There are illustrations, summary boxes, and study questions.