A drilling rig is a machine which is very important to be used in making boreholes for oil, water, natural gas from underground reservoirs. It is also can be very useful in order to get samples of mineral core and to prepare an oil well. Drilling rigs can be small but also can be huge. The shape of drilling rigs depend on the functions. Small and portable drilling rigs are used to drill mineral and huge drilling rigs which are able to drill through thousands of meters.

Drilling rigs come with various designs and various types too. There are a number of different attributes which are used to describe different types and designs of drilling rigs. Drilling rigs can be divided into five different types by the power used like steam, electric, hydraulic, pneumatic, and mechanical. Drilling rigs can be divided into three different types by the pipe used like coil tubing, cable and conventional. Drilling rigs can be divided into three different types by the height like single, double, and triple. Drilling rigs can be divided into two different types by the derrick’s position like slant and conventional. Drilling  rigs can be divided into five different types by the drilling or rotation method like hammer, sonic, no rotation, rotary table, and top drive.