Q$)$ Drilling necessitates bit load, bit rotation, and mud

circulation.

Q$)$ The optimum mud cake thickness is $2mm$ for API

water loss and mud cake thickness.

Q$)$ Assume that we have conducted an API water loss

experiment and the total water loss volume is found to

be $28$ML$.$ Explain your result in detail and correlate it

with the effect of having low$/$ high water loss.