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] Key features of this powerful rig include a 35-foot mast and a versatile 3-speed tophead offering up to 7,200 ft-lbs of torque. It boasts a substantial 40,000 lbf holdback capacity and a 25,000 lbf pulldown, complemented by a 25,000 lbf hydraulic hoisting drum.
[pdf] Turn the throttle lever gradually and drill at a slow speed until the hole is collared. The drill should be kept at right angles to the work until the hole is collared, then repositioned for angle drilling. Always apply sufficient down pressure to keep the tool from bouncing.
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