What are Drilling Derricks & rig masts?

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 number of joints in a stand (single-double-triple) that the rig can pull is dependent on the height of the derrick.

What is a drawworks rig?

The Drawworks is one of the most important components of the drilling rig (types of drilling rigs). The unit supplies the hoisting power, the drawworks spools the drilling line as the drill pipe is run into and pulled out from the well. The drilling line spools out under gravity and is reeled in by an electrical or diesel engine.

How deep can NX cores be drilled?

NX cores can only be taken in 4 in. (100 mm) size holes. Consequently the needs of the drilling program must be established before the pay items are determined. The Subsurface Exploration drilling items are bid in ranges of 50 ft. (15 m) of depth, i.e., 0-50 ft. (0-15 m) is one bid price per foot (meter) and 50-100 ft. (15-30 m) is another.

Who signs a drill rig Inspector's log?

The Chief Inspector and the Drill Rig Inspector shall sign and date the Drill Rig Inspector’s log. 2.522 The Chief Inspector shall take the Driller’s log and the Drill Rig Inspector’s log and combine them to create the Chief Inspector’s log. The Chief Inspector shall sign and date this log.