Evaluation of Matrix-Fracture Transfer Functions for Counter-Current Capillary Imbibition

2009 ◽  
Vol 80 (1) ◽  
pp. 17-56 ◽  
Author(s):  
Tayfun Babadagli ◽  
Can Ulas Hatiboglu ◽  
Tarek Hamida
Keyword(s):  
Transfer Functions ◽  
Capillary Imbibition ◽  
Matrix Fracture ◽  
Counter Current

Theoretical analysis of counter-current absorption of a poorly soluble gas based on the PDE-AD model

1986 ◽  
Vol 51 (6) ◽  
pp. 1222-1239 ◽  
Author(s):  
Pavel Moravec ◽  
Vladimír Staněk
Keyword(s):  
Experimental Data ◽  
Liquid Phase ◽  
Gas Phase ◽  
Transfer Functions ◽  
Packed Bed ◽  
Packed Bed Column ◽  
Interfacial Transport ◽  
Gaseous Component ◽  
Poorly Soluble ◽  
Counter Current

Expression have been derived in the paper for all four possible transfer functions between the inlet and the outlet gas and liquid steams under the counter-current absorption of a poorly soluble gas in a packed bed column. The transfer functions have been derived for the axially dispersed model with stagnant zone in the liquid phase and the axially dispersed model for the gas phase with interfacial transport of a gaseous component (PDE - AD). calculations with practical values of parameters suggest that only two of these transfer functions are applicable for experimental data evaluation.

An experimental dynamic method of investigation of counter-current absorption of oxygen in water in a packed bed column

1987 ◽  
Vol 52 (7) ◽  
pp. 1715-1729 ◽  
Author(s):  
Pavel Moravec ◽  
Vladimír Staněk
Keyword(s):  
Transfer Functions ◽  
Simultaneous Detection ◽  
Harmonic Component ◽  
Packed Bed ◽  
Packed Bed Column ◽  
Oxygen Electrodes ◽  
Simultaneous Evaluation ◽  
Physical Absorption ◽  
On Line ◽  
Counter Current

An experimental method and technique are described in the paper of simultaneous detection of the transfer functions outlet-gas-stream-to-inlet-gas-stream and outlet-liquid-stream-to-inlet-gas-stream for the absorption of oxygen into water in a counter-current packed bed column. Both transfer functions were simultaneously monitored by means of three oxygen electrodes operating on the polarographic principle. The signals of these electrodes were processed in three steps to yield parameters of the model of physical absorption of gas. The first step was on-line evaluation of the Fourier coefficients of the principal harmonic component in all three monitored streams. The second step was the calculation of the frequency characteristics of both transfer functions while the third step yielded parameters of the model by optimization in the frequency domain. The method permits simultaneous evaluation of the parameters of the flow of both phases in the column and the interfacial transfer of oxygen.

scholarly journals Modeling of influence of heterogeneity gradient for counter-current capillary imbibition

2019 ◽  
pp. 97-103
Author(s):  
Igor G. Telegin
Keyword(s):  
Capillary Imbibition ◽  
Technological Processes ◽  
Important Stage ◽  
Isothermal Case ◽  
Constant Slope ◽  
Counter Current

Capillary imbibition is the most important stage in many technological processes. The article is devoted to studying the special question of the influence of the non-constant slope on the solutions of counter-current capillary imbibition problem in the isothermal case.

scholarly journals A CHANGE IN OIL VISCOSITY DURING CRUDE OIL PRODUCTION INFLUENCE ON THE SOLUTIONS OF COUNTER-CURRENT CAPILLARY

2019 ◽  
pp. 71-78
Author(s):  
I. G. Telegin ◽  
O. B. Bocharov
Keyword(s):  
Water Saturation ◽  
Oil Field ◽  
Model Parameters ◽  
Capillary Imbibition ◽  
Oil Viscosity ◽  
Complex Composition ◽  
Field Development ◽  
Oil Field Development ◽  
Crude Oil Production ◽  
Counter Current

In this article we construct a modification of the model of counter-current capillary imbibition with oil viscosity dependent on dynamic water saturation. This approach corresponds to the approximate modeling of the complex composition of hydrocarbon fluid and taking into account the fact that a change in oil viscosity is recorded in some fields with an increase in the share of water in the extracted liquid at different stages of oil field development. The behavior of solutions under variation of model parameters is studied numerically. It is shown that the leaching of lighter fractions of oil at the first stages of operation as a whole increases the terms of achievement of project indicators. The influence of gravity on capillary washing of hard-to-reach places is analyzed.

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