Introducing a Rheology Model for Non-Newtonian Drilling Fluids. (26th August 2021)

• Record Type: Journal Article
• Authors: Rashidi, Masoud; Sedaghat, Ahmad; Misbah, Biltayib; Sabati, Mohammad; Vaidyan, Koshy; Mostafaeipour, Ali; Dehshiri, Seyyed Shahabaddin Hosseini; Almutairi, Khalid; Issakhov, Alibek
• Other Names: Herreros M.I. Academic Editor.
• Is Part Of: Geofluids. Volume 2021(2021)
• Publication Date: 2021-08-26
• Subjects: Hydrogeology -- Periodicals; Sedimentary basins -- Periodicals; Fluids -- Migration -- Periodicals; Groundwater flow -- Periodicals; Geothermal resources -- Periodicals; Fluid dynamics -- Periodicals; Earth -- Crust -- Periodicals; 551.49
• DOI: 10.1155/2021/1344776
• Languages: English
• ISSNs: 1468-8115

Abstract

Abstract : An API standard drilling fluid was investigated from laminar to turbulent flow conditions using an in-house-built viscometer at speeds from 200 to 1600 RPM. A power-based method was applied to obtain the apparent viscosity and the shear stress of the water-based drilling mud (WBM) in the annulus of the viscometer. Then, a MATLAB optimization program was developed to obtain model parameters for five rheology models integrated in a generalized Herschel-Bulkley-Extended (HBE) model and two widely used 4-parameter models in drilling industry. It is found that the Bingham, Cross, and HBE rheology models have precisely matched the WBM measurements in the viscometer. A generalized Reynolds number was applied to determine the Darcy friction factor although the PL (power law model) and the HB (Herschel-Bulkley model) exhibited a nonrealistic negative shift from the laminar friction factor.