Which consequence results when drilling mud viscosity drops below specification limits in a deep well?

💡 Explanation

Increased borehole collapse risk occurs by thinning the drilling mud, because the reduced viscosity undermines the mechanism of hydrostatic pressure support against the wellbore wall, therefore the formation is less stable, rather than other benefits stemming from an optimized viscosity.

• Which risk increases significantly in a refrigeration cycle operating with a superheated refrigerant?
• Which mechanism explains the energy loss from a microwave pulse propagating through humid air?
• Which distortion results when extreme mass influences spacetime?
• Which consequence results when a laser passes through diffraction grating?
• Which outcome results when excess product accumulates in catalytic converter?
• Which consequence weakens friction stir welds in aluminum?