This Spanish translation of A Primer of Oilwell Drilling, 4th ed. is a full-color, illustrated first reader of the oilwell drilling business; describes drilling operations from selecting a drill site to installing the Christmas tree; explains rig personnel, their jobs, and related equipment in down-to-earth language. A glossary of drilling terms is also included. Published in cooperation with the International Association of Drilling Contractors. 135 illustrations. ISBN 0-88698-135-2. Fourth Ed. 1979, 100 pp.