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taghi-khani--vahid
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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...
Characterization and Modeling of Heavy Oil Fields Using Artificial Neural Networks to Optimize Horizontal Wells Selection
, Ph.D. Dissertation Sharif University of Technology ; Pishvaie, Mahmoud Reza (Supervisor) ; Taghi Khani, Vahid (Supervisor) ; Buzorgmehri, Ramin (Co-Advisor)
Abstract
Steam-Assisted Gravity Drainage (SAGD) is one of the best and the most effective methods of enhanced oil recovery (EOR) which is used in the production from Heavy Oil Reservoirs which constitute large amount of oil throughout the globe. In a typical process of SAGD, steam is injected into a horizontal well and the oil is produced several meters deeper in the ground. In order to increase the Recovery of this process, it is better to review on the Pre-heating methods around the injecting and producing wells. Pre-heating is important when the viscosity of the oil is large enough to prevent oil from any motion at the beginning of the SADG operation, and makes it necessary to to use a Pre-heating...