Boreholes are bored into the ground with the help of drilling fluid, also known as drilling mud. These fluids are primarily utilised in the drilling of oil and natural gas wells, but they are also used on exploration drilling rigs to dig simple boreholes such as water wells. These fluids perform a number of functions, such as preventing formation fluids from entering the wellbore, keeping the drill bit cool and clean while drilling, transporting drill cuttings, and suspending drill cuttings while drilling is halted and drilling acces...
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