GROUNDWATER

When rotary bits hit rock bottom, it's hammer time

Joe Haynes, Lone Star Drills president, tells GDI why it can be beneficial to change from mud rotary and tricone bits to DTH hammers when drilling water wells in rock formations and offers some advice on what size of hammers to consider.

Joe Haynes
 A down-the-hole (DTH) hammer excels at boring through rocky soil and solid rock because of its percussive operation

A down-the-hole (DTH) hammer excels at boring through rocky soil and solid rock because of its percussive operation

Regions with the hardest rock formations require the most powerful tools to drill boreholes for water wells. Mud rotary and tricone bits easily drill through soft to medium soil formations but switching...

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