The drilling rigs are used to create holes in the surface of the earth intended for extraction of natural gas, oil wells, drilling water wells and these machines are massive but there are other small ones which can be moved manually by one individual known as augers.
Drilling rigs are meant to get samples of mineral deposits, ground and soil properties, and they are also used to install underground utilities as well as instrumentation and sub-surface fabrications.
They are usually mounted on mobile trailers, tracks or they may be permanently placed on land and there also others which are mounted on structures that are marine-based.
Marine-based do not have any drilling rigs and they are known as offshore oil rigs and the term rig is normally an equipment that is complicated and is supposed to be used to drill the earth’s surface.
Small sized drilling equipment are utilized for exploration of minerals, investigations of the environment, water wells, blasting holes and the ones that are large have the capability of utilizing some large mud pumps which circulates some slurry via the drill bit so as to remove the cuttings when the drilling is going on and it also cools the drill bit.
Some sand or acid is forced into the reservoir so as to enable the extraction of the natural gas or oil and in locations that are remote and there are crews who are permanently located on the site and the marine rigs might drill up to thousands of miles down the sea but needs few crew who work in cycles or rotations.
There are many companies which make the drilling rigs and they have helped many countries to be able to extract oil and where there are deserts they have helped to extract water that is used for drinking as well as for immigration purposes.
Mobile drilling companies drill bore holes which helps them to have enough water especially for bathing of their building has many stories and the water that is supplied by counties or the government is not enough or does not have enough pressure to get to the top stories.
Mobile tracks or trailers which are mounted with drilling rigs helps the drilling to be done even in faraway places and this drilling rigs are small but they can be capable of drilling up to thousands of meters below the service of the earth and they are usually meant for extracting water, and also for purposes of testing the soil below for minerals.
The cost of the drilling rigs depending on the intended use since they are usually custom made for diverse uses and the drilling bits are made in such a way that they can with stand very severe heat when they turn round in high speed when drilling even very hard rocks to penetrate the earth.
Some drilling rigs are made with tough metal such as hardened steel and there are special drill companies which manufacture them solely.