SPWLA Glossary

A heavy, hinged clamp attached to the hook and traveling block by bail-like arms and used for lifting drill pipe, casing, and tubing and lowering them into the hole. In hoisting a joint of drill pipe, the elevators are latched onto the pipe just below the tool joint (coupling) which prevents the pipe from slipping through the elevators. Also used to support the upper sheave wheel, over which survey cable moves, during the well-logging operation