Experimental Measurement of CO2 Solubility in heavy Oil and Its Diffusion Coefficient calculation at both Static and Dynamic Conditions

2013 ◽  
Author(s):  
Farshid Torabi ◽  
Christine Chan ◽  
Ali Kavousi
Keyword(s):  
Diffusion Coefficient ◽  
Heavy Oil ◽  
Experimental Measurement ◽  
Co2 Solubility ◽  
Dynamic Conditions

A Power-Law Mixing Rule for Predicting Apparent Diffusion Coefficients of Binary Gas Mixtures in Heavy Oil

2017 ◽  
Vol 140 (5) ◽  
Author(s):  
Hyun Woong Jang ◽  
Daoyong Yang ◽  
Huazhou Li
Keyword(s):  
Diffusion Coefficient ◽  
Apparent Diffusion Coefficient ◽  
Heavy Oil ◽  
Diffusion Coefficients ◽  
Gas Mixtures ◽  
Gas Diffusion ◽  
Gas Mixture ◽  
Mixing Rule ◽  
Heavy Oils ◽  
Apparent Diffusion

A power-law mixing rule has been developed to determine apparent diffusion coefficient of a binary gas mixture on the basis of molecular diffusion coefficients for pure gases in heavy oil. Diffusion coefficient of a pure gas under different pressures and different temperatures is predicted on the basis of the Hayduk and Cheng's equation incorporating the principle of corresponding states for one-dimensional gas diffusion in heavy oil such as the diffusion in a pressure–volume–temperature (PVT) cell. Meanwhile, a specific surface area term is added to the generated equation for three-dimensional gas diffusion in heavy oil such as the diffusion in a pendant drop. In this study, the newly developed correlations are used to reproduce the measured diffusion coefficients for pure gases diffusing in three different heavy oils, i.e., two Lloydminster heavy oils and a Cactus Lake heavy oil. Then, such predicted pure gas diffusion coefficients are adjusted based on reduced pressure, reduced temperature, and equilibrium ratio to determine apparent diffusion coefficient for a gas mixture in heavy oil, where the equilibrium ratios for hydrocarbon gases and CO2 are determined by using the equilibrium ratio charts and Standing's equations, respectively. It has been found for various gas mixtures in two different Lloydminster heavy oils that the newly developed empirical mixing rule is able to reproduce the apparent diffusion coefficient for binary gas mixtures in heavy oil with a good accuracy. For the pure gas diffusion in heavy oil, the absolute average relative deviations (AARDs) for diffusion systems with two different Lloydminster heavy oils and a Cactus Lake heavy oil are calculated to be 2.54%, 14.79%, and 6.36%, respectively. Meanwhile, for the binary gas mixture diffusion in heavy oil, the AARDs for diffusion systems with two different Lloydminster heavy oils are found to be 3.56% and 6.86%, respectively.

Experimental measurement and thermodynamic modeling of CO2 solubility in aqueous solutions of morpholine

2016 ◽  
Vol 214 ◽  
pp. 411-417 ◽  
Author(s):  
Bahareh Khosravi ◽  
Farzaneh Feyzi ◽  
Mohammad Reza Dehghani ◽  
Shayan Kaviani
Keyword(s):  
Aqueous Solutions ◽  
Thermodynamic Modeling ◽  
Experimental Measurement ◽  
Co2 Solubility

scholarly journals CO2 solubility of heavy oil related to CO2 EOR and storage

2011 ◽  
Vol 76 (6) ◽  
pp. 522-529 ◽  
Author(s):  
Kyuro Sasaki ◽  
Yuichi Sugai ◽  
Hiroyuki Kono ◽  
Takashi Takahashi ◽  
Daisuke Ito ◽  
...  
Keyword(s):  
Heavy Oil ◽  
Co2 Solubility ◽  
Co2 Eor ◽  
And Storage

Determination of the Effective Diffusion Coefficient of Nano-Particles in Biological Tissue Using Simulation Method and Experimental Measurement

2012 ◽  
Author(s):  
Kai Yue ◽  
Yang Song ◽  
Peng Xu ◽  
Xinxin Zhang
Keyword(s):  
Diffusion Coefficient ◽  
Magnetic Fluid ◽  
Experimental Measurement ◽  
Biological Tissue ◽  
Effective Diffusion Coefficient ◽  
Effective Diffusion ◽  
Simulation Method ◽  
Biological Tissues ◽  
Nano Particles ◽  
Theoretical Formula

Based on the requirements of magnetic fluid hyperthermia for tumor therapy, the effective diffusion coefficient of nano-particles in biological tissue is numerically simulated using Monte-Carlo method when the treated tissues are considered as porous media. The simulation results are in good agreement with the data obtained from theoretical formula, and the validity of the proposed numerical simulation method is verified by the experimental data. The influences of the key structural factors on the effective diffusion coefficient are analyzed. Moreover, the corresponding experimental measurement is performed using the magnetic resonance imaging (MRI) method to obtain the effective diffusion coefficient of nano-magnetic fluid in biological tissue. The measured effective diffusion coefficient obtained by MRI measurement matches well with the simulation data. The results of this study may provide guidance for the study of transport phenomenon in biological tissues.

Experimental Measurement of CO2 Solubility in Aqueous CaCl2 Solution at Temperature from 323.15 to 423.15 K and Pressure up to 20 MPa Using the Conductometric Titration

2017 ◽  
Vol 62 (12) ◽  
pp. 4228-4234 ◽  
Author(s):  
Hamdi Messabeb ◽  
François Contamine ◽  
Pierre Cézac ◽  
Jean Paul Serin ◽  
Clémentine Pouget ◽  
...  
Keyword(s):  
Experimental Measurement ◽  
Conductometric Titration ◽  
Co2 Solubility ◽  
Cacl2 Solution

Experimental Investigation of Gas-Heavy Oil Molecular Diffusion Coefficient in Porous Media: Experimental Results for CO2 in Iranian Crudes

2011 ◽  
Vol 312-315 ◽  
pp. 1049-1054 ◽  
Author(s):  
Navid Mirjordavi ◽  
M. Kazemeini ◽  
R. Kharrat ◽  
M.H. Ghazanfari ◽  
A. Salehi
Keyword(s):  
Experimental Investigation ◽  
Porous Media ◽  
Diffusion Coefficient ◽  
Heavy Oil ◽  
Molecular Diffusion ◽  
Initial Pressure ◽  
Experimental Results ◽  
Molecular Diffusion Coefficient ◽  
Molecular Diffusivity ◽  
Mathematical Correlation

Molecular diffusion of gases in crude oils plays a crucial role in several oil recovery processes especially in cold-based production process. However, experimental data concerning CO2 diffusivity in heavy oils due to the tedious nature of diffusivity measurements are relatively rare in the open literature. In this work, a comprehensive experimental investigation of the effective molecular diffusion determination of CO2-heavy oil systems in homogeneous porous media was studied. The so-called pressure decay method was applied to measure the molecular diffusivity of carbon dioxide in heavy oil. Furthermore, effect of various parameters such as initial pressure, temperature and porous media on molecular diffusion coefficient have been analyzed and based upon experimental results, a new mathematical correlation for prediction of CO2-heavy oil molecular diffusion coefficient in presence of porous medium as a function of temperature was proposed.

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