This study aims to evaluate the effect of wheat flour as a natural and environmentally friendly material on properties water-based mud. Recently, many experiments have been conducted with various additives improve drilling fluids. The using new additive fluid was studied rheological filtration properties. In laboratory several samples mud were prepared, different concentrations from 1 wt% 7 add...

Jojoba oil biofuel is a potential alternative to diesel fuel with attractive properties, but its flow behavior under the operating conditions of engine still needs be clarified. In this study, rheological properties jojoba are presented in assessment experimentally evaluate both their behaviors at different temperatures. A Fann-type coaxial cylinder viscometer was employed. The shear stress tes...

In this study, predictive capabilities of apparent viscosity of oil-based drilling fluids which is used in National Iranian South Oilfields Company (NISOC) were evaluated using Newtonian and non-Newtonian models to drive a new suitable equation. The non-Newtonian models include Bingham plastic, Power law, Herschel-Bulkley, Casson, and Robertson-Stiff. To validate the results, the calculated vis...

In this study, a micro-viscometer is developed for measuring shear-varying blood viscosity over a wide-ranging shear rate. The micro-viscometer consists of 10 microfluidic channel arrays, each of which has a different micro-channel width. The proposed design enables the retrieval of 10 different shear rates from a single flow rate, thereby enabling the measurement of shear-varying blood viscosi...

Abstract Wax precipitation has become a serious problem for the petroleum industry. The occurs when there is equilibrium disturbance on pressure and temperature as well crude oil composition. deposits will eventually result in restriction of fluid flow inside pipeline, severe deposition cause blockage. chemical additives currently being implemented industry have various limitations including hi...

Synthetic polymer fluids are becoming a popular replacement for bentonite slurries to support excavations for deep foundation elements. However, the rheological properties of the polymer fluids used in excavation support have not been studied in detail, and there is currently confusion about the choice of mathematical models for this type of fluid. To advance the current state of knowledge, a l...

We propose a method for high–order image subsampling using feedforward artificial neural networks (FANNs). Our method employs a tridiagonally symmetrical FANN, which is obtained by applying the design algorithm proposed in [1], and a small, fully connected FANN. We show that our subsampling method provides excellent speed–performance tradeoffs as compared to those of the method based exclusivel...

Donna L Berry ([email protected]) Fangxin Hong ([email protected]) Barbara Halpenny ([email protected]) Anne Partridge ([email protected]) Erica Fox ([email protected]) Jesse R Fann ([email protected]) Seth Wolpin ([email protected]) William B Lober ([email protected]) Nigel Bush ([email protected]) Upendra Parvathaneni ([email protected]) Dagmar Amtmann (dagmar...

OBJECTIVE To compare fluid thickeners composed of starch polysaccharide (STA), guar gum-based polysaccharide (GUA), and xanthan gum-based polysaccharide (XAN) with the use of a viscometer and a line spread test (LST) under various measurement conditions. METHODS The viscosity of thickened fluid with various concentrations (range, GUA 1%-4%, XAN 1%-6%, STA 1%-7%, at intervals of 1%) was measur...