... and apparent viscosity [2,3]. Stable and reproducible rheological measurements are essential to control the flow behavior and the interaction with the cuttings. As suggested by API Recommended Practice 13D, a rotational rheometer is used to investigate the viscoelastic properties of drilling fluids, typically...

... to concentration difference in CI-5 and CI-6, viscosities of these sample fluids were measure. Interesting CI-6 had almost 20 % more viscosity than CI-5. Increase in hydration time of polymer has shown increase in CST value (2) . Which essentially matches with our observation of increase in CST value with increase...

... gravity and higher viscosity. The required conditions for biodegradation occurrence are the presence of microorganisms, substrate (mainly hydrocarbons), nutrients and an oxidizing agent, while the timing of hydrocarbon charge and the post-charge temperature history of the reservoir can have major effects...

... volumetrically and uniformly as well. Generally, there are two feasible ways to keep the mobility ratio (water mobility divided by oil phase mobility) less than 1. First, increasing water viscosity and the other through decreasing water Relative Permeability (is a measure of the ability of a porous material...

... in a long injection sequence were analysed for a well injecting water in an oil reservoir. In order to reproduce the fluid interaction in the reservoir, it was essential to consider the relevant impact of temperature on the injected fluid viscosity in the near-wellbore zone due to the cold-water injection...

...]. Once defined these factors, it is possible to determine the Viscosity of a fluid, which is a quantity measured with an instrument called a viscometer. Viscosity is a rheological parameter of extreme importance, it is defined as the measure of a fluid s resistance to flow or resistance to deform when...

.... Chemical EOR technology aims at increasing water viscosity and improving sweep efficiency by using a polymer (polyacrylamide) in solution. The pilot unit has been designed to mix seawater and polymer, to properly prepare and mature the solution, and to inject it at high pressure into the well, thus...

... time associated with poor hole cleaning, ineffective ECD management or late influx detection can be achieved through real time continuous mud monitoring at rig site. efficiency viscosity traditional mud measurement oil-based drilling fluid drilling fluid density concentration drilling...

... of the water salinity may represent additional problems in this type of measurements [1]. orifice superficial velocity flow rate liquid superficial velocity flow metering multiphase orifice froude number multiphase mixture mixture velocity viscosity equation production control liquid holdup...

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... of a polymer-water-flooding project. The monitoring program should include, but not limited, the routine verification of polymer concentration, routine determination of the viscosity, and periodical check of the thermal and chemical stability of the polymer. INTRODUCTION Typically, about 70% of most proven oil...

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... by strong areal horizontal heterogeneities and bearing a medium-viscous oil. Laboratory analyses were performed as first step aimed at assessing efficiency of polymer displacement: an initial screening was conducted to select the optimal polymer, focusing on viscosity-concentration and thermal stability...

... optimized. The capacity of these solutions in increasing the water viscosity has been tested in water with different amounts of dissolved salts, from 25 up to 100 g/l. The dynamic viscosity of water after the application of these inverse emulsions is enhanced of about three orders of magnitude. The full...

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... concentration spectra shear rate xanthan polymer polymer concentration chemical flooding methods xanthan polymer solution viscosity rheological property variation apparent viscosity polymer enhanced recovery xanthan solution polymer viscosity upstream oil & gas alkalis 1 CHARACTERISATION...

... job performance of the newly treated wells is also presented in this paper. reservoir carbonate reservoir hydraulic fracturing fracture emulsified acid proppant viscosity acid system acid upstream oil & gas fracture port closure pressure concentration offshore congo acid...

..., i.e., waxy crude and fuel oils, polymeric and fibrous systems. A material is usually called thixotropic if its behaviour is time-dependent which means that it exhibits a viscosity-time relationship. Thixotropic fluids show a viscosity which decreases in time when a constant shear rate is applied after...

... system chemical spill leak alarm valve site station viscosity master station compensation flow rate small leak leak location midstream oil & gas pipeline segment leak reservoir surveillance production control climate change mbld detection system air emission threshold testing...