A5062980509- Methane Hydrates and Related Phenomena
- Hydrocarbon exploration and reservoir analysis
- CO2 Sequestration and Geologic Interactions
- Atmospheric and Environmental Gas Dynamics
- Spacecraft and Cryogenic Technologies
- Phase Equilibria and Thermodynamics
- Carbon Dioxide Capture Technologies
- Enhanced Oil Recovery Techniques
- Reservoir Engineering and Simulation Methods
- Hydraulic Fracturing and Reservoir Analysis
- Petroleum Processing and Analysis
- Chemical and Physical Properties in Aqueous Solutions
- Thermodynamic properties of mixtures
- GABA and Rice Research
- Arctic and Antarctic ice dynamics
- Catalysis and Hydrodesulfurization Studies
- Drilling and Well Engineering
- Chemical Synthesis and Characterization
- Cannabis and Cannabinoid Research
- Game Theory and Voting Systems
- Covalent Organic Framework Applications
- Maritime Ports and Logistics
- Field-Flow Fractionation Techniques
- Thermochemical Biomass Conversion Processes
- Catalysis for Biomass Conversion
University of Calgary
2014-2024
Calgary Laboratory Services
2018
Abstract Experimental data on the kinetics of methane gas hydrate decomposition are reported. The isothermal/isobaric semi‐batch stirred‐tank reactor, used by Kim et al. (1987), was modified to include an on‐line particle size analyzer. experiments were conducted at temperatures ranging from 274.65 K 281.15 and pressures between 3.1 6.1 MPa. model Clarke Bishnoi (1999, 2000) determine intrinsic rate constant. It found that activation energy for is 81 kJ/mol constant 3.6 × 10 4 mol/m 2 Pa.s.
A predictive model has been developed to determine the incipient hydrate formation conditions in porous media. The only additional information that is needed pore radius, surface energy per unit area, and wetting angle. It was found performed well predicting experimental data of Handa Stupin (J. Phys. Chem. 1992, 96, 8599).
An isochoric equilibrium cell was used for measuring the solid−vapor−liquid conditions of semiclathrates formed in an aqueous solution tetra-n-butylammonium bromide (TBAB). The were from two different synthetic landfill gas (LFG) mixtures CO2 (1) + CH4 (2), which had mole fractions x1 = 0.4 and 0.6. experimental temperature, pressure, mass fraction TBAB ranged (286 to 293) K, (3 6.5) MPa, (0.05 0.20), respectively. For both gases present study, it found that, at a given pressure required...
The initial state of hydrocarbon mixtures in petroleum reservoirs is the result equilibrium among several forces, most important which are chemical forces arising from potential gradients molecular species accumulation, gravitational force acceleration, and thermal diffusion temperature gradients. these determines pressure a compositional gradient creation gas–oil contact (GOC) stationary reservoir along with changes other physical properties. Accurate modeling development proper model for...
High quality oil is produced from catalytic hydrotreating of HTL biocrude, which can be further converted into biofuel.
Experimental three-phase hydrate equilibrium data (aqueous liquid solution, vapor, and incipient solid hydrate) for methane hydrates in aqueous solutions of ethylene glycol sodium chloride are presented. The obtained the temperature range (262 to 282) K pressure (2.1 9.5) MPa. formation pressures also calculated using recently developed equation-of-state method Clarke Bishnoi. computed results compared with experimental data.
Carbon dioxide gas hydrates were formed and decomposed in a high-pressure cell equipped with flat glass window that was packed spherical beads. The experimental constructed to be, for all practical purposes, one-dimensional cell, beads chosen as the porous medium becaus of their high permeability easily defined geometry. experiments conducted at initial water saturations 20, 25, 30, 35, 42% pressure 4 MPa during hydrate formation 1.65 decomposition. temperature maintained °C. To identify...
The solid phase model of Paricaud1 is used, in conjunction with the predictive Soave–Redlich–Kwong (PSRK) equation state,2 to correlate thermodynamic equilibrium conditions TBAB and TBAC semiclathrates formed presence pure gases. Unlike many previous modeling efforts, current approach does not neglect solubility gas aqueous or water vapor phase. Rather, molar fraction are computed from a flash calculation. Furthermore, new also computes Langmuir constants Kihara potential rather than square...
A recent study by Eggeman and Chaffin (2005 , T. Chafin S. ( 2005 ). Beware of pitfalls CO2 freezing predictions Chem. Eng. Prog. 101 3 ), 39 – 44 . [Google Scholar]), which showed large discrepancies in freeze-out conditions as predicted several commercial simulators, prompted a reexamination using the TBS equation state for phase equilibrium calculations involving solids. Salim Trebble (1994 P. M. A. 1994 Modelling solid phases thermodynamic via translation cubic at triple point Fluid...
Naturally occurring gas hydrates are regarded as an important future source of energy and considerable efforts currently being invested to develop methods for economically viable recovery this resource. The natural from hydrate deposits has been studied by a number researchers. Depressurization the reservoir is seen favorable method because its relatively low requirements. While lowering pressure in production well seems be straight forward approach destabilize methane hydrates, intrinsic...
A constant-volume reactor was used for measuring the solid–vapor–liquid equilibrium conditions of semiclathrates formed in aqueous solutions tetra-n-butyl ammonium bromide (TBAB) and chloride (TBAC). The TBAB TBAC were from pure Ar Xe. experimental temperatures ranged (284 to 303) K, pressures (266 6114) kPa, concentration wTBAB = (0.05 0.20), wTBAC 0.20). As expected, at a given temperature, pressure required form with argon xenon much lower than that gas hydrates. From data, enthalpy...
A new isochoric reactor was commissioned for studying gas hydrate equilibrium formation, and experiments were carried out to measure the conditions methane formation in aqueous solutions of CuSO4, KNO3, MgSO4. The experimental ranged from (273 281) K temperature between (3 6) MPa pressure, mass fraction salt (0.025 0.402), depending on salt. In case all three salts, it observed that there an inhibiting effect which is contrast a previous observation found CuSO4 had promoting CO2 hydrates.