What is Well drilling

What is Well drilling? Well drilling is the procedure of drilling a hole in the ground for the extraction of a natural resource such as ground water, natural gas, or petroleum.
Drilling for the exploration of the nature of the material underground (for instance in search of metallic ore) is best described as borehole drilling, or 'drilling'. ‘Bulroc UK drilling machines’ specializes in DTH well drilling and rock drilling and also for the exploration of the nature of the material underground. Bulroc UK has an innovative range of DTH Big Hole Hammers, Button Bits and System Capable of producing cased holes up to 850 mm (33.5") diameter for uncased holes up to 1,090mm (43") for all types of rock formation.(rock drilling equipment)

A major factor in drill bit selection is the type of formation that needs to be drilled. The effectiveness of a drill bit varies by formation type. There are three types of formations: soft, medium and hard. A soft formation includes unconsolidated sands, clays, soft limestones, red beds and shale. Medium formations include calcites, dolomites, limestones, and hard shale. Hard formations include hard shale, calcites, mudstones, cherty lime stones and hard and abrasive formations.

This range also has significant potential for the construction and pipeline industries for horizontal drilling applications. Here again, holes up to 1,060mm (41.75”) diameter can be produced, whether cased or uncased, depending on the rock conditions.

The earliest wells were water wells, shallow pits dug by hand in regions where the water table approached the surface, possibly with masonry walls lining the interior to prevent collapse. Modern drilling techniques utilize long drill shafts, producing holes much narrower and deeper than could be produced by digging.

Well drilling can be done either manually or mechanically and the nature of required equipment varies from extremely simple and cheap to very sophisticated.