What are the two rotating systems used in the drilling rigs?

Rotation is provided by a hydraulic or an electric motor, and rotation speeds often vary from 50 to 120 rpm. Compressed air is often used to discharge cuttings from the bottom of the hole. The size of the gap between the drill pipe and the wall of the hole is related to the flushing of drill cuttings.

What is rotating system in drilling rig?

The rotating system. The rotating system allow the rotation of the drill string, and it consists of the rotary table, the kelly and the swivel; In modern rigs, a top drive groups together the functions of the above three items of equipment.

How are cuttings removed in rotary drilling?

Drill cuttings are removed from the borehole by the injection of high pressure compressed air, down the middle of the drill rod, exiting out of the annular space between the drill rod and borehole. Samples of the substrate from the direct air method are often thought to be less correlative to the depth of the bit face.

What are the oil rigs called?

offshore drilling rig
An oil platform, offshore platform, or offshore drilling rig is a large structure with facilities for well drilling to explore, extract, store, and process petroleum and natural gas that lies in rock formations beneath the seabed.

What is the oil drilling machine called?

drilling rig
A drilling rig is an integrated system that drills wells, such as oil or water wells, in the earth’s subsurface.

What are oil towers called?

derrick
In the petroleum industry, a derrick consisting of a framework or tower of wood or steel is erected over the deep drill holes of oil wells to support the tackle for boring, to raise and lower the drilling tools in the well, and to insert and remove the well casing…

What is drill collar in drilling?

1. n. [Drilling] A component of a drillstring that provides weight on bit for drilling. Drill collars are thick-walled tubular pieces machined from solid bars of steel, usually plain carbon steel but sometimes of nonmagnetic nickel-copper alloy or other nonmagnetic premium alloys.