Transport properties of nonelectrolyte liquid mixtures. VIII. Viscosity coefficients for toluene and for three mixtures of toluene + hexane from 25 to 100�C at pressures up to 500 MPa

Dymond, J. H.; Awan, M. A.; Glen, Norman; Isdale, J. D.

doi:10.1007/bf00500752

Cited by 54 publications

(32 citation statements)

References 12 publications

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“…Notably, the transition from G-S to HTHP parameters with respect to increasing pressure is smooth and gradual. Figure 37 [79] and Figure 38 [80] show that hybrid PC-SAFT predictions are in agreement with the experimental density data for the n-hexane/n-hexadecane mixture and n-hexane/toluene mixtures in the HTHP region. …”

Section: Hybrid Pc-saft Predictions For Mixturessupporting

confidence: 68%

“…Dymond and coworkers [86,87,88,89,90] subsequently utilized their approach to reproduce experimental viscosities for n-alkanes, branched alkanes and aromatics, typically within a tolerance of better than ±2%. However, their model is extremely sensitive to minor perturbations in molar volume, resulting in significant deviations in the predicted viscosity.…”

Section: Viscosity Model Developmentmentioning

confidence: 99%

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An Assessment of Research Needs Related to Improving Primary Cement Isolation of Formations in Deep Offshore Wells

Tapriyal¹,

Enick²,

McHugh³

et al. 2012

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The National Energy Technology Laboratory (NETL) conducts cutting-edge energy research and technology development and analyzes energy systems and international energy issues for the U.S. Department of Energy. The NETL-Regional University Alliance (NETL-RUA) is an applied research collaboration that combines NETL's energy research expertise with the broad capabilities of five nationally recognized, regional universities: Carnegie Mellon University (CMU), The Pennsylvania State University (PSU), the University of Pittsburgh (Pitt), Virginia Tech, and West Virginia University (WVU), and the engineering and construction expertise of an industry partner (URS). The NETL-RUA leverages its expertise with current fossil energy sources to discover and develop sustainable energy systems of the future, introduce new technology, and boost economic development and national security. Cover Illustration:The image provides an inside view of the density cell, which is capable of getting density data at 500°F and 35,000 psi. The left side image shows the bubble point of the gas. The tiny bubbles can be seen at the top center of the cell. The middle image shows the liquid-liquid-gas equilibrium phase exhibiting two liquid phases at the bottom and in the middle sections as well as a gas phase at the top. The right side image shows the solid formation as the pressure is increased.

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Section: Hybrid Pc-saft Predictions For Mixturessupporting

confidence: 68%

Section: Viscosity Model Developmentmentioning

confidence: 99%

An Assessment of Research Needs Related to Improving Primary Cement Isolation of Formations in Deep Offshore Wells

Tapriyal¹,

Enick²,

McHugh³

et al. 2012

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“…The bulk viscosities of the two liquids at 25 °C were adjusted for pressure using the data of Thompson et al for water, 30 and Dymand et al for toluene. 31 The water was thermostatted by the chromatograph to maintain constant temperature. The toluene was not thermostatted, but its temperature dependence is weak, ~1% per °C at room temperature.…”

Section: Resultsmentioning

confidence: 99%

Slip Flow through Colloidal Crystals of Varying Particle Diameter

Rogers

Wirth

2012

ACS Nano

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Slip flow of water through silica colloidal crystals was investigated experimentally for 8 different particle diameters, which have hydraulic channel radii ranging from 15 nm to 800 nm. The particle surfaces were silylated to be low in energy, with a water contact angle of 83°, as determined for a silylated flat surface. Flow rates through centimeter lengths of colloidal crystal were measured using a commercial liquid chromatograph for accurate comparisons of water and toluene flow rates using pressure gradients as high as 1010 Pa/m. Toluene exhibited no-slip Hagen-Poiseuille flow for all hydraulic channel radii. For water, the slip flow enhancement as a function of hydraulic channel radius was described well by the expected slip flow correction for Hagen-Poiseuille flow, and the data revealed a constant slip length of 63±3 nm. A flow enhancement of 20±2 was observed for the smallest hydraulic channel radius of 15 nm. The amount of slip flow was found to be independent of shear rate over a range of fluid velocities from 0.7 to 5.8 mm/s. The results support the applicability of the slip flow correction for channel radii as small as 15 nm. The work demonstrates that packed beds of submicrometer particles enable slip flow to be employed for high volume flow rates.

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“…The volume of the piezometer was previously calibrated from the known density of a standard fluid (pure water) with wellestablished PVT information (IAPWS-95 formulation, Wagner and Pruss 30 ) at a temperature of T 0 ) 673.15 K and a pressure of P 0 ) 38.54 MPa. The volume at these conditions was V P0T0 ) (32.210 ( 0.003) cm 3 . The variations of the volume depending on the temperature T and the pressure P were calculated from the equation where R ) 1.3 × 10 -5 K -1 is the thermal expansion coefficient of the alloy (EI-437B4) which is virtually temperature-independent over a broad temperature range from (500 to 700) K, and ) 4.12 × 10 -5 MPa -1 is the pressure expansion coefficient of the piezometer.…”

Section: Methodsmentioning

confidence: 99%

PVT Measurements for Toluene in the Near-Critical and Supercritical Regions

et al. 2001

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The PVT relationships of toluene were measured in the near-critical and supercritical regions. Measurements were made using a constant-volume piezometer immersed in a precision thermostat. The volume of the piezometer V PT was corrected for both temperature and pressure expansions. The temperature was measured with a 10 Ω platinum resistance thermometer (PRT-10) with an uncertainty of 10 mK. Pressure was measured by means of a dead-weight gauge with an uncertainty of (0.0015 to 0.002) MPa. Uncertainties of the density measurements are estimated to be (0.05 to 0.10)%, depending on the experimental pressure and temperature. The volume of the piezometer V PT was calibrated using a reference fluid (water) with well-known PVT properties at various temperatures and pressures. Measurements were made along various near-critical and supercritical isotherms between (591 and 673) K at pressures from (4 to 36) MPa. The measured PVT data for toluene were compared with values calculated from equations of state and previous measurements of other authors. The accuracy of the method was confirmed by PVT measurements for pure water in the critical and supercritical regions.

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Transport properties of nonelectrolyte liquid mixtures. VIII. Viscosity coefficients for toluene and for three mixtures of toluene + hexane from 25 to 100�C at pressures up to 500 MPa

Cited by 54 publications

References 12 publications

An Assessment of Research Needs Related to Improving Primary Cement Isolation of Formations in Deep Offshore Wells

An Assessment of Research Needs Related to Improving Primary Cement Isolation of Formations in Deep Offshore Wells

Slip Flow through Colloidal Crystals of Varying Particle Diameter

PVT Measurements for Toluene in the Near-Critical and Supercritical Regions

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