...T. G. Monger This paper investigates the role of oil aromaticity in mis-cibility development and in the deposition of heavy hydrocarbons during CO 2 flooding. The results of phase equilibrium measurements, compositional studies, sand-pack displacements, and consolidated corefloods are presented...

...Ø. Glasø This paper presents a generalized correlation for predicting the minimum miscibility pressure (MMP) required for multicontact miscible displacement of reservoir fluids by hydrocarbon, CO2, or N 2 gas. The equations are derived from graphical correlations given by Benham et al. 1 and give...

...A. T. Watson; P. D. Kerig; R. W. Otter Homogeneous core samples are needed for EOR experiments. We have devised a simple test for detecting the presence of nonuniformities in cores. The test consists of measuring the pressure drop across the core during a two-phase immiscible displacement...

...Bruce T. Campbell; Franklin M. Orr, Jr. Results of visual observations of high-pressure CO 2 floods are reported. The displacements were performed in two-dimensional (2D) pore networks etched in glass plates. Results of secondary and tertiary first-contact miscible displacements and secondary...

... approach to the instability theory that overcomes this limitation. The new approach, like earlier work, is based on the assumption that the immiscible displacement of one fluid by another can be treated as a moving-boundary problem. Therefore, two solutions arise, one for each side of the plane interface...

... correspond artificial intelligence grid effect grid displacement equation fluid dynamics modeling & simulation injection well differential equation flow in porous media upstream mobility weighting wheeler numerical procedure assumption numerical reservoir simulation There are many...

...John P. Heller; Cheng Li Lien; Murty S. Kuntamukkula At the reservoir temperature and pressure at which CO 2 can displace a crude oil with high microscopic-displacement efficiency, its density and compressibility are close to those of the crude oil—and not greatly different from those of water...

... is the maximum gravity-drainage (interstitial) velocity in this direction, (6) v max , γ = u max , x / cos γ ϕ ( 1 − S c w − S o r g ) , relative permeability gas injection method reservoir simulation displacement gravity drainage oil...

...Kwoon C. Mui; Clarence A. Miller A theoretical analysis is presented for growth of a single, large elliptical finger in a porous medium. The objective is to obtain an understanding of how large fingers develop once a displacement front has become unstable. The results provide information beyond...

...R. B. Alston; G. P. Kokolis; C. F. James This paper presents an empirically derived correlation for estimating the minimum pressure required for multicontact miscible (MCM) displacement of live oil systems by pure or impure CO 2 streams. Minimum miseibility pressure (MMP) has been correlated...

... capillary pressure term saturation timestep equation artificial intelligence flow in porous media capillary pressure pressure drop displacement upstream oil & gas constraint A significant limitation to our understanding of the dynamics of multiphase fluids in porous media...

...Stanley C. Jones Displacements were conducted in Berea cores to gain insight into the mechanism of tertiary oil displacement and propagation by a micellar slug. Contrary to expectation, the first oil mobilized by micellar fluid was among the first oil (instead of the last oil) to be produced...

... to be observed between successive bed breakthrough points. Although the model assumes pistonlike displacement, these novel phenomena do not appear to be artifacts of this limiting assumption. This work develops the concept of a bed property time that forms the basis for a generalized bed-ordering parameter...

...T. M. Doscher; R. O. Oyekan; M. El Arabi Physical model studies of the displacement of residual oil by CO 2 have led to the conclusion that the driving mechanism for the process is that of a gas drive of the swollen crude. In this final phase of the study, the fluid/fluid displacement process...

... similar to those observed in laboratory tests of oil displacement by surfactant systems in cores. The model includes the effects of surfactant transfer between aqueous and hydrocarbon phases and both reversible and irreversible surfactant adsorption by the porous medium. The effects of capillary pressure...

...Ioannis Chatzis; Norman R. Morrow Capillary number relationships are presented for displacement of both residual and initially continuous oil from water-wet consolidated sandstones having permeabilities that varied over about two orders of magnitude. It was found that the critical displacement...

...Carol Braester Block size is considered one of the main parameters of a fractured rock reservoir. In one-phase flow, it controls the transition from the early stages of production to asymptotic behavior, and in two-phase wettingnonwetting displacement it controls the rate of production...

... (when the system has been swept) to be lower in unstable displacements than in stable ones. If this effect is present in field applications, corefloods in which fingering is absent should not be used as direct indicators of field-scale CO 2 flood displacement efficiency because they will yield...

... displacement weightless column configuration equation lubinski upstream oil & gas strain energy postbuckled configuration expression equilibrium position helically buckled rod application force-pitch relation radial clearance constraint wall constraint The helical postbuckled...

...L. Paterson; V. Hornof; G. Neale This paper discusses the viscous fingering that occurs when water or a surfactant solution displaces oil in a porous medium. Such floods were visualized in an oil-wet porous medium composed of fused plastic particles. The flow structure changed significantly within...