Major components of a rotary drilling rig

Drilling derricks and Rig Masts consist of a steel framework with a square or rectangular cross-section. Their purpose is to support the hoisting equipment and rack the tubulars while tripping pipe. The numbe. [pdf]

Yangquan Project Water Well Drilling Rig Maintenance

This is job No. 1. It doesn’t matter how regular you are about maintenance if the person handling the tools doesn’t know what he’s doing. Says Caho: “You need someone who’s actually trained to do it.” From w. [pdf]