Key role of drilling fluid in rotary drilling, Civil Engineering

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Question

What is key role of drilling fluid in rotary drilling in site search?

Answer

Drill fluid in rotating serves two main reasons.

(i) Facilitate rotation of drilling tube during rotary drilling.

(ii) Do something as a cooling agent to cool down heat generated during drilling operation.

Traditionally, water is in general employed as drilling fluid. Yet, it suffers from following problems-

(i) It affects constancy of nearby ground with introduction of water into borehole

(ii) It affects excellence of instance by changing water content of soil samples collected from borehole or drillhole.

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