... to completion fluid in a candidate well, and hence the mixing ratio of drilling fluid to completion fluid to be used in compatibility tests. Furthermore, CFD simulations provided an indication of the likely shear rates occurring during displacement that were later used in the testing. Fluid stability...

... and pipes with internal diameters (IDs) from 0.127 to 35 mm, lengths from 13.5 mm to 400 m, and flow rates from 0.3×10 −3 to 600 dm 3 /min, covering several magnitudes of Reynolds number, linear velocities, shear rates, and pressure drop. Using friction factors, f , and Reynolds number, Re , we derived...

... & Gas concentration precipitate ion concentration different concentration reduction SPE Production fluid system viscosity profile shear rate agent cation pH value ppm 1 fluid viscosity Hydraulic fracturing has become a very-common and widespread technique during the last few...

.... 21 3 2016 1 12 2016 28 11 2016 20 2 2017 28 9 2015 16 11 2017 Copyright 2017, Society of Petroleum Engineers fracturing fluid proppant fracturing materials hydraulic fracturing concentration hpg mxl fluid lbm 1 shear rate Upstream Oil & Gas guar gal...

... fluids and materials polymer viscosity particle concentration repulsive force Exhibition drilling fluid property Upstream Oil & Gas concentration micelle application shear rate crosslinker nanoparticle lbm 1 stability SPE Production reservoir surfactant ves-based fluid...

... by dots (red circular and blue rhombohedral), with the fitted rheological model, which uses the Ellis and Ostwald-de Waele models. It should be noted that the transition shear rate and power-law index are nearly independent of temperature. For example, the transition shear rate of gelled acid is almost 4...

... & Gas HMP micelle ve fluid viscosity viscoelastic surfactant surfactant University guar associative polymer supramolecular ve fluid Yang SPE Production wormlike micelle formation damage conductivity shear rate Synthetic polymer was also used as a fracturing fluid for high...

... in a more shear-thinning behavior than other gelant systems, and the measured viscosity/shear-rate data could be well-matched with the Carreau-Yassuda model. Traditional tube testing and dynamic oscillatory tests were performed to measure the gelation time and monitor the gelation process and viscoelastic...

...-cake thickness SPE Production reservoir filter cake leakoff conductivity cell gel shear stress fracture cleanup gas velocity pressure gradient shear rate residual gel One of the effective methods to satisfactory gas recovery in unconventional gas reservoirs is to create a long...

..., the flow index n , and the yield shear stress τ 0 . The model relates the shear stress s experienced by the fluid to the shear rate γ as (3) τ = τ 0 + K γ n . drilling fluid chemistry drilling fluid property fracturing fluid leakoff data fracturing materials hydraulic...

...-temperature (HP/HT) viscometer at live and partially neutralized (pH 4 to 5) conditions. The rotor and bob of the viscometer were made of Hastelloy C to resist corrosion by the acids. The viscosity was measured as a function of shear rate from 0.1 to 1020 s –1 over a temperature range of 75 to 250°F at 300...

... to determine the amount of crosslinker retained in the core. Experimental results show that this acid system caused damage in some cases. At low shear rates, in-situ-gelled acid formed a gel inside the core as indicated by the cyclic behavior noted in the pressure drop across the core, and the acid changed...

.... The objective was to examine how these organic acids/chelating agents affected the rheological properties of spent-acid systems. Measurements were made at temperatures from 75 to 200°F at a shear rate of 10 sec –1 and a pressure of 300 psi. Several simple organic acids (formic, acetic, propionic, and butyric...

... injection Fluid Dynamics cleanup time production rate Injection Rate Upstream Oil & Gas flow velocity differential pressure shear rate RPM treatment oil productivity viscosity productivity Back Production injectivity spe production Oil Recovery The increasing water production...

... examined on its rheological properties. Measurements were made at temperatures from 75 to 220°F and 300 psi at various shear rates from 0.01 to 935 sec -1 . Acid additives included corrosion inhibitors, a mutual solvent, a nonemulsifying surfactant, iron-control agents, and a hydrogen-sulfide scavenger...

... A second type of steady-shear viscosity measurements used a sweep of shear rates to distinguish between two different biopolymers that were very similar in chemical structure. The polymer concentrations were adjusted to have equal viscosity at 100 sec−1, but the viscous behavior was much different at much...

... of the solutions was fixed at 10 g/L, with a shear rate of 24,000 s −1 . The solution was stirred for 10 minutes at 25°C in adapted brines. The solutions were then diluted before viscosity measurements, filtration tests, and injections in porous media. A low-shear viscometer (LS30 from Contraves) having...

... inhibition scale inhibition remediation of hydrates viscosity gel SPE Production injection norne field shear stress shear rate oil injection placement treatment design norne well gelled scale inhibitor horizontal well breaker water management august 2009 permeability yield point long...

... measurements were conducted on Hastelloy ®- fitted rotational viscometers at temperatures ranging from 70 to 300°F. The effects of surfactant concentration, shear rate, temperature, and acid additives on the apparent viscosity of various surfactant-based fluids were investigated in detail. The surfactant...

... of an HTHP see-through cell. Steady shear viscosity was measured for emulsions with droplet sizes ranging in diameter from 1 to 20 μ m. The viscosity covered a shear rate range from 10 to 750 s −1 and a temperature range from 25 to 80°C. All measurements were regenerated for emulsifier concentrations of 1, 5...