All Clear Energy

In geotechnical engineering, drilling fluid is a fluid used to drill boreholes into the earth. Often used while drilling oil and natural gas wells and on exploration drilling rigs, drilling fluids are also used for much simpler boreholes, such as water wells. The three main categories of drilling fluids are water-based muds (which can be dispersed and non-dispersed), non-aqueous muds, usually called oil-based… Read More

Casing is large diameter pipe that is assembled and inserted into a recently drilled section of a borehole and typically held into place with cement. Purpose Casing that is cemented in place aids the drilling process in several ways: Prevent contamination of fresh water well zones. Prevent unstable upper formations from caving-in and sticking the drill string or forming… Read More

A drill string on an drilling rig is a column, or string, of drill pipe that transmits drilling fluid (via the mud pumps) and rotational power (via the kelly drive or top drive) to the drill bit. The term is loosely applied as the assembled collection of the drill pipe, drill collars, tools and drill bit. The drill string is hollow so that drilling… Read More