Drill Bits Wiki Knowledge

how to select the right water well drilling bit

Principles of selecting drill bits
Selection according to formation conditions: Different formation conditions require the selection of different types of drill bits.

Selection according to drilling parameters: Drilling parameters such as drilling pressure and rotating speed will affect the selection of drill bits.

Selection according to the performance of drilling fluid: The performance of drilling fluid will affect the cooling and slag removal of the drill bit.


Consideration of cost and performance: Select the most cost-effective drill bit on the premise of meeting the performance requirements.

Factors affecting bit performance
Formation hardness: The harder the formation, the more severe the wear on the bit.

Formation abrasiveness: The abrasiveness of the formation accelerates the wear of the bit.

Formation water content: The water content of the formation affects the performance of the drilling fluid, which in turn affects the performance of the drill bit.

Drilling fluid performance: The density, viscosity, solid phase content and other parameters of the drilling fluid will affect the cooling and slagging of the drill bit.

Drilling parameters: Drilling pressure, rotational speed, drilling cycle and other parameters will affect the wear and life of the drill bit.

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