rotary drill

rotary drill

[′rōd·ə·rē ′dril]
(mechanical engineering)
Any of various drill machines that rotate a rigid, tubular string of rods to which is attached a rock cutting bit, such as an oil well drilling apparatus.

rotary drill

A machine for opening holes in rock or earth by means of a cutting bit at the end of a metal shank; usually turned by a hydraulically or pneumatically driven motor.
References in periodicals archive ?
The company described the rig as its most transportable rotary drill yet.
The drill costs an estimated one tenth of a conventional rotary drill, and requires less fuel per well drilled.
A mud rotary drill rig has also been sourced and should be on site shortly.
In 1978 he became shareholder and director of Superior Rock Bit Company of Minnesota which supplies the open-pit mining industry with large-diameter rotary drill bits.
The Company has intersected the Silkstone seam with eight of the rotary drill holes completed in the Vista development drilling program.
To address the changing needs of its customers, Sandvik Mining recently launched an automation system for rotary drill rigs, known as AutoMine Rotary Drilling.
These comprise large-hole rotary drill rigs, down-the-hole crawlers and rock drilling tools from Secoroc.
The Company's second phase development drilling program includes 16 rotary drill holes and 10 core holes with completion expected later this quarter.
Over the past two years development efforts of Littlehampton, U.K.-based Dando have concentrated on two main areas: introduction of a more powerful range of shell and auger type cable percussion drilling rigs; and the design of low cost, but powerful top drive hydraulic rotary drill rigs.
Scott Alexander, B-E's rotary drill product manager, predicts that drills of the not-too-distant future will carry an arsenal of technologically advanced tools that will provide an increasing amount of information about the drilling process.
With the overall trend among surface mines pointing to fewer but larger units in their drill fleets, several of the major rotary drill rig manufacturers have augmented their product lines recently with heavier, more powerful models.