... with diffusion coefficient as functions of both temperature and solvent concentration. After model setup, the newly added features of mass transfer and conjugate heat transfer were validated by comparison with analytical models. For mass transfer validation, the numerical results were in agreement...

... C 3 and CO 2 . EOS predictions and viscosity measurements indicated that increasing the solvent concentration in a solvent-bitumen system beyond a defined Threshold Solvent Concentration (TSC) has an insignificant effect on solvent solubility and bitumen viscosity reduction. complex reservoir...

... with a lower-volatility solvent such as toluene. oil sand bitumen steam-solvent combination solvent concentration initial slope carbon dioxide viscosity viscosity measurement Oil Viscosity molecular weight pressure coefficient fraction equation complex reservoir concentration Athabasca...

... the injected solvent concentration. This can lead to significant errors when predicting the ES-SAGD performance and its economical feasibility. In paper SPE-180713-MS, SAGD relative permeability was presented as a function of temperature. In this paper, a series of realistic ES-SAGD relative permeability...

... by Bayestehparvin et al. (2017) and the focus of the present work is use of solvent and non-equilibrium assumption on SAGD. Non-Equilibrium Behaviour Non-equilibrium partition coefficients are generetated using analytical model. The coefficeints are a function of solvent concentration, pressure, temperature...

... mechanistic studies (both numerically and experimentally) and provide valuable input to the challenges of optimizing SA-SAGD processes in oil sands. Modeling & Simulation enhanced recovery solvent concentration steam chamber coupling steam-solvent combination concentration Alberta mobile...

... mass transfer using constant coefficients in liquid and vapour solvent systems. oil sand enhanced recovery steam-solvent combination complex reservoir solvent content DME Upstream Oil & Gas solvent concentration bitumen propane concentration viscosity heavy oil Peace River...

... process that utilizes less water and reduces the amount of energy and gas emissions per barrel of oil produced. Artificial Intelligence solvent concentration steam-solvent combination concentration steam chamber Upstream Oil & Gas Gravity Drainage bitumen coefficient penetration depth...

.... Upstream Oil & Gas experiment application enhanced recovery solvent concentration recovery ultimate recovery heavy oil steam-solvent combination carbon number optimal solvent type diffusion rate interaction Oil Recovery Babadagli bitumen recovery recovery rate refractive index...

... solvent. Initiation of coinjection right after achieving the inter-well communication enables the enhancement of oil recovery early in the process. Subsequently, the solvent concentration should be gradually decreased until it becomes zero for the final period of the coinjection. Simulation case studies...

... in fact are dominant at the front. A purely empirical correlation by Nenniger is introduced, which can be rearranged to predict the maximum solvent speed, also as a function of temperature. exponent correlation prediction enhanced recovery solvent concentration bitumen solvent front...

... enthalpy coefficients. The studies found that simulations conducted using a non-equilibrium solvent solubility method yielded more realistic relative permeability (k r ) curves. The dissolved solvent concentrations and diluted oil viscosity profiles were also more realistic. The viscosity-reducing...

... to model the process, in a way analogous to the SAGD model described by Butler, who demonstrated the similarity between two processes with a series of Hele-Shaw experiments and derived an analytical steady-state flow rate relationship that is comparable to the SAGD case. Solvent concentration and intrinsic...

... distance affect the measured horizontal sweep rate of the SA-SAGD process. Macroscopic porous media properties such as permeability and porosity are influential parameters affecting the pore-scale SA-SAGD interface advancement velocity. steam-solvent combination solvent concentration viscosity...

... in the later stage of the process. Improved solvent efficiency can be achieved by adjusting operating parameters such as the start time for steam-solvent co-injection, the duration of the steam-solvent co-injection period and the solvent concentration in the steam-solvent injectant. Results from this study...

... be applied for mixtures of solvents to optimize the overall efficiency of the steam-solvent recovery method. thermal method steam-assisted gravity drainage stability analysis variation steam-solvent combination solvent concentration convection enhanced recovery upstream oil & gas porous...

..., the optimal solvent, temperature and solvent concentration for viscosity reduction are recommended. And it is found that after a solvent is placed in contact with heavy oil samples at any temperature in the range of 20 – 80C the reduction of viscosity can be significant. However, considering the economical...