Physical science of the dioctadecyldimethylammonium chloride-water system. 1. Equilibrium phase behavior

1990 ◽  
Vol 94 (6) ◽  
pp. 2546-2552 ◽  
Author(s):  
R. G. Laughlin ◽  
R. L. Munyon ◽  
Y. C. Fu ◽  
A. J. Fehl
Keyword(s):  
Phase Behavior ◽  
Physical Science ◽  
Equilibrium Phase ◽  
Water System ◽  
Chloride Water ◽  
System 1

Mechanism of Alcohol Displacement of Oil from Porous Media

1961 ◽  
Vol 1 (03) ◽  
pp. 195-212 ◽  
Author(s):  
J.J. Taber ◽  
I.S.K. Kamath ◽  
Ronald L. Reed
Keyword(s):  
Phase Behavior ◽  
Calcium Chloride ◽  
Solid Phase ◽  
Equilibrium Phase ◽  
Water System ◽  
Commercial Application ◽  
Practical Result ◽  
Immiscible Mixture ◽  
Two Phases ◽  
Tie Line

Abstract Alcohol floods of consolidated sandstone cores have shown the process to be strongly dependent on the phase behavior of the particular alcohol-oil-water system used. This means that in many cases the mechanism does not conform to the idea of a piston-like displacement. Instead, it is found that by changing the alcohol it is possible to change the relative velocities of the oil and water and, in fact, the entire mechanism of the process. The effects of rate, viscosity, initial saturation, distance travelled and hysteresis of relative permeability on the alcohol flooding mechanism are discussed. Introduction Reasons for interest in the use of alcohol to miscibly displace oil and water from a porous medium appear in the existing literature. The mechanism of the displacement has been considered and the apparent implications formulated into a theory which presumably would enable one to predict the essential features of the process. Unfortunately, most of the reported experiments have been performed with unconsolidated or artificially consolidated sands. With these systems some of the noteworthy facets of the process are obscured and resulting data appear uncertain. It is the purpose of this paper to show how the use of consolidated sandstones has led to revision of the mechanism and, hence, the theory of alcohol flooding. The practical result is increased pessimism toward the possibilities of commercial application of the simplest form of the alcohol-slug process. However elucidation of the mechanism has made it possible to define the essential characteristics of a system of slugs which will behave in a nearly piston-like fashion and, thus, yield the best possible result. Equilibrium Phase Behavior Fig. 1 is a diagram of the ternary system isopropyl alcohol (IPA)-Soltrol-calcium chloride brine. Brine was used to prevent plugging of the core and calcium chloride was used because sodium chloride brine exhibits a solid phase with Soltrol and IPA. If alcohol is added in increments to the immiscible mixture of water and oil represented by Point A, the path followed by the successively equilibrated samples will be on the Line ABC and pass from the immiscible region to the miscible region by crossing the binodal curve at B. Consider the intersection D of this path with the tie Line EF. The quantity of oleic phase is proportional to the Segment ED and the quantity of the aqueous phase is proportional to DF. Compositions of the two phases are specified by Points E and F. It is clear that in the case shown the oleic phase is diminishing and entirely disappears when miscibility is achieved.

Physical science of the dioctadecyldimethylammonium chloride-water system. 3. Colloidal aspects

1992 ◽  
Vol 96 (1) ◽  
pp. 374-383 ◽  
Author(s):  
R. G. Laughlin ◽  
R. L. Munyon ◽  
J. L. Burns ◽  
T. W. Coffindaffer ◽  
Y. Talmon
Keyword(s):  
Physical Science ◽  
Water System ◽  
Chloride Water

Effect of L64 on the Phase Behavior of 1-Dodecyl-3-methylimidazolium Chloride/Water System

2010 ◽  
Vol 28 (7) ◽  
pp. 1069-1075 ◽  
Author(s):  
Luyan Wang ◽  
Zhiyan Wu ◽  
Meishan Pei ◽  
Xinzhou Wu ◽  
Xutang Tao
Keyword(s):  
Phase Behavior ◽  
Water System ◽  
Chloride Water

Rheology of Cetyltrimethylammonium Tosylate-Water System. 1. Relation to Phase Behavior

Langmuir ◽  
1995 ◽  
Vol 11 (9) ◽  
pp. 3337-3346 ◽  
Author(s):  
J. F. A. Soltero ◽  
J. E. Puig ◽  
O. Manero ◽  
P. C. Schulz
Keyword(s):  
Phase Behavior ◽  
Water System ◽  
Cetyltrimethylammonium Tosylate ◽  
System 1

Physical science of the dioctadecyldimethylammonium chloride-water system. 2. Kinetic and mechanistic aspects

1991 ◽  
Vol 95 (9) ◽  
pp. 3852-3856 ◽  
Author(s):  
R. G. Laughlin ◽  
R. L. Munyon ◽  
Y. C. Fu ◽  
T. J. Emge
Keyword(s):  
Physical Science ◽  
Water System ◽  
System 2 ◽  
Chloride Water

Correction - "Volumetric and Phase Behavior in the Nitric Acid—Water System"

1956 ◽  
Vol 48 (4) ◽  
pp. 816-816
Author(s):  
C. H. Duffy ◽  
W. H. Corcoran ◽  
B. H. Sage
Keyword(s):  
Nitric Acid ◽  
Phase Behavior ◽  
Water System ◽  
Acid Water

Phase Behavior and Polymerization of the Ternary Polymerizable Cationic Gemini Surfactant/Fatty Alcohol/Water System

Langmuir ◽  
2020 ◽  
Vol 36 (4) ◽  
pp. 986-990 ◽  
Author(s):  
Masaaki Akamatsu ◽  
Kosuke Ogura ◽  
Koji Tsuchiya ◽  
Kenichi Sakai ◽  
Masahiko Abe ◽  
...  
Keyword(s):  
Phase Behavior ◽  
Fatty Alcohol ◽  
Gemini Surfactant ◽  
Water System ◽  
Cationic Gemini Surfactant ◽  
Alcohol Water

scholarly journals Thermodynamic Analysis of Relaxation Model for Non-Equilibrium Phase Behavior of Hydrocarbon Mixtures

2021 ◽  
Vol 2090 (1) ◽  
pp. 012138
Author(s):  
I M Indrupskiy ◽  
P A Chageeva
Keyword(s):  
Relaxation Time ◽  
Phase Behavior ◽  
Relaxation Process ◽  
Thermodynamic Analysis ◽  
Balance Equation ◽  
Equilibrium Phase ◽  
Characteristic Relaxation Time ◽  
Relaxation Model ◽  
Entropy Balance ◽  
Non Equilibrium

Abstract Mathematical models of phase behavior are widely used to describe multiphase oil and gas-condensate systems during hydrocarbon recovery from natural petroleum reservoirs. Previously a non-equilibrium phase behavior model was proposed as an extension over generally adopted equilibrium models. It is based on relaxation of component chemical potentials difference between phases and provides accurate calculations in some typical situations when non-instantaneous changing of phase fractions and compositions in response to variations of pressure or total composition is to be considered. In this paper we present a thermodynamic analysis of the relaxation model. General equations of non-equilibrium thermodynamics for multiphase flows in porous media are considered, and reduced entropy balance equation for the relaxation process is obtained. Isotropic relaxation process is simulated for a real multicomponent hydrocarbon system with different values of characteristic relaxation time using the non-equilibrium model implemented in the PVT Designer module of the RFD tNavigator simulation software. The results are processed with a special algorithm implemented in Matlab to calculate graphs of the total entropy time derivative and its constituents in the entropy balance equation. It is shown that the constituents have different signs, and the greatest influence on the entropy is associated with the interphase flow of the major component of the mixture and the change of the total system volume in the isotropic process. The characteristic relaxation time affects the rate at which the entropy is approaching its maximum value.

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