Effect of Drillpipe Rotation on Hole Cleaning During ...
· The effect of drillpipe rotation on hole cleaning during directionalwell drilling is investigated. An 8 in. diameter wellbore simulator, 100 ft long, with a 4 1 2 in. drillpipe was used for the study. The variables considered in this experimental work are: rotary speed, hole inclination, mud rheology, cuttings size, and mud flow rate.