Book excerpt: 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 totally new lesson combines Mud Pumps and Conditioning Equipment and Circulating Systems. It offers a better understanding of the operation, care, and maintenance of mud pumps and mud conditioning equipment. Discusses the composition, testing, and treatment of drilling fluids and the route of circulation. All measurements are given in both U.S. and SI units. Many illustrations, a complete glossary, and review questions and answers are also provided.