This new expanded and colorful edition features enhanced content and graphics. With a new engineering perspective supplied by author and industy expert Dr. Paul M. Bommer, Senior Lecturer of Petroleum Engineering at The University of Texas at Austin, this Primer remains the comprehensive first reader of the oilwell drilling industry. It contains over 220 vibrant photos and illustrations, covering driling processes both on land and offshore, from exploration to well completion. Includes a glossary of drillling terms. Published in cooperation with the Interantional Association of Drilling Contractors (IADC). Also includes 20"x24" full-color rotary rig poster.