... were also evaluated. While viscosity at 300 RPM (511s -1 ) and more recently high viscosity at lower shear rates, have been used for selection of HVFR's, these parameters alone do not indicate proppant carrying capacity. The authors did not find a correlation between higher viscosity and better...

.... In the steady shear-viscosity measurement, viscosity behavior versus a wide range of shear rates was studied. Moreover, the influence of elasticity was examined by performing oscillatory-shear tests over the range of frequencies. Normal stress was the other elasticity factor examined to evaluate elastic...

... society of petroleum engineers lignosulfonate borate-crosslinked guar-based fluid shear rate guar gum gal 1 loading breaker permeability formulation breaker activity Introduction Hydraulic fracturing stimulation practices are very important for enabling higher volumes of hydrocarbon...

... shear flow multipass slot flow apparatus proppant elasticity particle shear rate hydraulic fracturing concentration rheological property uncrosslinked hpg fracturing materials settling Upstream Oil & Gas viscosity crosslinked gel crosslinked hpg Introduction Hydraulic...

... and Reynolds number (Re) were investigated in detail. The Microchannels wettabilities, fluid shear rates and residual resistance factors also were studied. Finally, the experimental results were compared with field data, and its impact on the gas shale matrix was analyzed. shale gas residual resistance...

... that the fluid might or might not have a yield stress and that the shear stress might be a nonlinear function of shear rate. Spacers are used to separate one fluid from another. They are designed to be compatible with the mud being used in the well. This paper compares the performance of spacer and spacer/mud...

... viscosity wormhole propagation rate spe 140138 shear rate in-situ gelled acid acid mixture dissolution carbonate reservoir concentration acid injection rate gelled acid Introduction For heterogeneous reservoirs and for high contrast in permeability, acid diversion is necessary to enhance...

... the wall slip velocity and determine the true shear rate. It has been found that wall slip decreases as the foam quality or polymer concentration increases. Two foam hydraulic models, which use slip-corrected and slip-uncorrected rheological parameters, have been proposed. These models are applicable...

... equation upstream oil & gas drilling fluid property shear stress spe 82415 shear rate cement friction pressure application pipe accuracy turbulent flow drilling fluids and materials rheological model friction model drilling fluid selection and formulation explicit friction model...

... of the foam fluids. These new correlations are functions of temperature, foam quality, shear rate, and fluid concentrations. The correlations were compared with various published correlations. The available correlations in the literature have assumed that the flow behavior index of the foam is similar...

... Abstract Anionic polymers such as polyacrylic acid, polymethacrylic acid, and their derivatives are known to show pH sensitive rheology. Rheological data is presented for a polyacrylic acid type polymer as a function of polymer concentration, pH, shear rate, and temperature. The effects...

... agent to prepare xanthan fluids. Surfactant at 0.5% (vol.) was used as the foaming agent. Nitrogen was used as the gas phase. Foams were prepared and tested for qualities ranging from zero to 80% at various shear rates and at temperatures ranging from 75 to 200 °F. The flow data showed that both...

... slurries of 35 lb/Mgal guar linear gel with 6 ppg 20/40 mesh sand, 60 and 40 lb/Mgal hydroxypropyl guar (HPG) linear gels both with 4 ppg 20/40 mesh sand, and borate-crosslinked 35 lb/Mgal guar gel with 7.3 ppg 20/40 mesh sand. Test conditions cover a shear rate range of 60 to 120 sec −1 . In addition...

..., and into the disposal tank. The crosslinker is injected at a predetermined constant flow rate into the suction of the centrifugal pump. The HPS slot gap widths are varied to obtain various nominal shear rates. The boron concentration used is 45 ppm for the Guar based gels while for the HPG based gels it is 135 ppm...

... for high-shear and low-shear regimes and a novel cell design that minimizes flow irregularities. Previous papers 1 , 2 have presented the effects of experimental designs, shear rate, permeability, and pressure on the fluid loss of water-based systems with no fluid-loss control aids. This paper...

... ABSTRACT A study is presented on the effectiveness of different combinations of fluid and fluid-loss additives to control fluid loss in high-permeability formations under high shear rates. The impact on matrix damage and proppant-pack damage is also studied. Borate-crosslinked guars...

... pressure drilling well control polymer fla concentration viscosity hydraulic fracturing fluid loss control model 90 dimensionless group shear rate united states government gev 30 INTRODUCTION For a variety of reasons, ranging from the need to minimize hydraulic fracturing fluid cost...

... and the same variation in flow rate was followed. This procedure was repeated for a range of fixed gap width to provide shear stress versus shear rate data. In the second method, an initial flow rate was set and gap width was varied while the continuously crosslinked fluid was pumped single-pass through...

... property law parameter spe 29543 api drilling fluid chemistry upstream oil & gas bentonite shear rate drilling mud rheology rpm data drilling fluids and materials newtonian region drilling fluid formulation rheology drilling fluid selection and formulation drilling fluid rheology...

..., Eq. A-33 Greek Letters Greek Letters Abbreviation Expansion ∊ absolute height of wall roughness, in. #x03B3; ˙ w , a v g average shear rate at walls, Eq. A-41 ,1/sec μ w,app "apparent" Newtonian viscosity, Eq. A-23 , lbf-sec/100 ft 2 μ w...