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Mesoscopic theoretical modeling and experimental study of rheological behavior of water-based drilling fluid containing associative synthetic polymer, bentonite, and limestone
, Article Journal of Molecular Liquids ; Volume 347 , 2022 ; 01677322 (ISSN) ; Davoodi, S ; Ramazani S. A., A ; Minaev, K. M ; Sharif University of Technology
Elsevier B.V
2022
Abstract
Employing an effective rheological model for the flow of drilling fluid that can accurately predict changing conditions is of significant importance in drilling fluid optimization. Traditional generalized Newtonian models cannot predict the time change condition, viscoelastic behavior, role of each component, or microstructural behaviors within the fluid. Consequently, the present research aims to develop constitutive equations in the framework of generalized bracket formalisms and the extra tensor concept that connect the microscopic and macroscopic properties and can overcome the aforementioned problems of traditional rheological models. The developed model is applicable for drilling fluid...
Mathematical Modeling and Experimental Investigation in Rheological Behavior of Drilling Fluids Containing Synthetic Polymers
, Ph.D. Dissertation Sharif University of Technology ; Ramazani Saadatabadi, Ahmad (Supervisor)
Abstract
Drilling fluid is one the most important part of drilling operations in the oil and gas wells digging. From an economic point of view, almost 25 to 45% of drilling costs are allocated to drilling fluid. Drilling fluids consist of several components with different physical and structural forms which can be assumed as complex fluids. Optimum performance of the drilling process could be obtained through the dynamic fluid computation which requires a reliable mathematical model capable to predict transient-state and steady-state rheological behavior of drilling fluid. Generalized Newtonian models, such as the Bingham-plastic model, the power model, and the Herschel-Bulkley model, are the most...
Mesoscopic rheological modeling of drilling fluids: Effects of the electrolyte
, Article Journal of Petroleum Science and Engineering ; Volume 195 , 2020 ; Ramazani Saadatabadi, A ; Sharif University of Technology
Elsevier B.V
2020
Abstract
Drilling fluid is a complex fluid, including base fluid and other materials, carrying out the vital functions during drilling operation such as cutting transport and controlling formation pressure. In order to optimize performance of a drilling process, a reliable rheological model is required in the computation of fluid flow dynamics. Time-independent Generalized Newtonian formulation are the most common models for describing the rheological behavior of drilling fluids due to its simplicity and ease of use, in spite the fact that they are not able to predict the normal stresses and could not consider effects of active components on the rheological behavior of the drilling fluid and also...
Rheological modeling of water based drilling fluids containing polymer/bentonite using generalized bracket formalism
, Article Journal of Petroleum Science and Engineering ; Volume 189 , 2020 ; Ramazani Saadatabadi, A ; Sharif University of Technology
Elsevier B.V
2020
Abstract
Drilling fluids consist of several components with different physical and structural form which can be assumed as complex fluids. Optimum performance of drilling process could be obtained through the dynamic fluid computation which requires a reliable mathematical model capable to predict transient and steady state rheological behavior of drilling fluid. Generalized Newtonian formulations are the most popular models for drilling fluids due to their simplicity in spite of their inabilities to predict transient and elastic behavior of such fluids. In this paper, we have developed a mathematical model to predict transient and steady state rheological behavior of the complex fluids on the scale...
Mesoscopic theoretical modeling and experimental study of rheological behavior of water-based drilling fluid containing associative synthetic polymer, bentonite, and limestone
, Article Journal of Molecular Liquids ; 2021 ; 01677322 (ISSN) ; Davoodi, S ; Ramazani S.A., A ; Minaev, K.M ; Sharif University of Technology
Elsevier B.V
2021
Abstract
Employing an effective rheological model for the flow of drilling fluid that can accurately predict changing conditions is of significant importance in drilling fluid optimization. Traditional generalized Newtonian models cannot predict the time change condition, viscoelastic behavior, role of each component, or microstructural behaviors within the fluid. Consequently, the present research aims to develop constitutive equations in the framework of generalized bracket formalisms and the extra tensor concept that connect the microscopic and macroscopic properties and can overcome the aforementioned problems of traditional rheological models. The developed model is applicable for drilling fluid...