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Experimental Investigation of the Hole Cleaning Process in Horizontal and Inclined Wells Using a Custom-Made Water-Based Drilling Fluid
, M.Sc. Thesis Sharif University of Technology ; Taghi khani, Vahid (Supervisor) ; Tahmasebi, Korosh (Co-Supervisor) ; Kalhor, Mogtaba (Co-Supervisor)
Abstract
Currently, drilling such as vertical or straight-hole drilling, i.e. usually less than 30 degrees inclined, or deflection drilling is used to drill at conventional and even unconventional reservoirs around the world to increase recovery factor and productivity. A major challenge is cleaning the hole or removing debris which if not done properly can lead to problems such as stuck pipes. In addition, Improper use of drilling fluid in terms of rheological properties in different stages of drilling operations can cause the well to collapse due to the accumulation of particles in the annular space. The transfer speed of particles is very important in cleaning the well. Inefficient cleaning of...