RT Journal Article ID 3122efef7eca658e A1 Dewangan, Satish Kumar A1 Sinha, Shobha Lata T1 PREDICTION OF BOREHOLE CLEANING AND HOLE INSTABILITY FOR DRILLING FLUID FLOW THROUGH ANNULUS USING MINI-PILOT PLANT SETUP JF Multiphase Science and Technology JO MST YR 2018 FD 2018-07-06 VO 30 IS 1 SP 77 OP 97 K1 marsh funnel K1 drilling fluid rheology K1 low solid mud K1 drilling fluid additives K1 babool gum K1 borehole enlargement K1 drilling defect K1 slurry erosion K1 particulate wear K1 hole instability K1 petroleum well drilling industries AB Bore hole cleaning and the hole instability are two important issues associated with any well drilling program. Wellbore cleaning and wellbore instability (enlargement) can be judged by the cuttings bed formations and severity of the wear effects caused by the drilling fluid on the wall of the well, respectively. In the present investigation, first, the interrelationship between bore hole cleaning and hole instability is described. Second, the flow of the drilling mud through a mini-pilot plant of a pipe and concentric annulus are studied experimentally in the light of predicting the cuttings bed formation features and wear rate caused by the drilling fluids on the wellbore walls. The effects of the various factors, such as the eccentricity ratio, radius ratio, bulk slurry velocity, particle size distribution, particle concentration, and different types of additives, are discussed based on these two important and related phenomena of bore hole cleaning and hole instability. PB Begell House LK https://www.dl.begellhouse.com/journals/5af8c23d50e0a883,683eaa89315a4a78,3122efef7eca658e.html