AZ ROC C-53 Water Well Drilling Practice Questions - Arizona ROC C-53 Water Well Drilling Examination Exam

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When operating a cable tool drilling rig in alluvial boulders, what is the primary function of drilling jars in the tool string?

To filter sand particles out of the bailer slurry To increase the rotation speed of the tool string during stroke cycles To automatically inject drilling foam into the borehole bottom To deliver an upward impact blow to dislodge a stuck drilling bit

Correct Answer:

To deliver an upward impact blow to dislodge a stuck drilling bit

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