Displacement of oil by carbon dioxide. Final report

Orr, F.M.; Taber, J.J.

doi:10.2172/6525959

Cited by 17 publications

(15 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Those results revealed that the stagnant portion of the fluid was relatively constant as flow rate was increased, whereas the velocity profile in the individual (mobile) pores increased and flattened, consistent with an increased value of . Figure 7b indicates that the mass transfer coefficients obtained in this study were comparatively consistent with the ones described in literature (Baker, 1977;Batycky et al, 1982;Bretz and Orr Jr., 1987;Orr Jr. and Taber, 1984;Spence Jr. and Watkins, 1980). The resultant corrected dispersion coefficients (K corr ) and their corresponding experimental conditions (T, p and u m ) for the Estaillades and Ketton carbonates, as well as new high velocity data obtained for the Donnybrook sandstone, are listed in Table 2.…”

Section: Difference In Sandstone and Carbonate Pulse Breakthrough Curvessupporting

confidence: 89%

“…Orr and co-workers systematically conducted miscible core flood experiments through four carbonates (Bretz and Orr Jr., 1987;Bretz et al, 1988;Orr Jr. and Taber, 1984). The cores were saturated with brine and step input or pulse experiments were conducted using a solution of the same brine containing 0.4% sucrose as the tracer.…”

Section: Dispersion Measurement In Carbonate Rocksmentioning

confidence: 99%

See 1 more Smart Citation

Enhanced gas recovery with CO2 sequestration: The effect of medium heterogeneity on the dispersion of supercritical CO2–CH4

Honari

Bijeljic

Johns

et al. 2015

International Journal of Greenhouse Gas Control

View full text Add to dashboard Cite

Section: Difference In Sandstone and Carbonate Pulse Breakthrough Curvessupporting

confidence: 89%

Section: Dispersion Measurement In Carbonate Rocksmentioning

confidence: 99%

Enhanced gas recovery with CO2 sequestration: The effect of medium heterogeneity on the dispersion of supercritical CO2–CH4

Honari

Bijeljic

Johns

et al. 2015

International Journal of Greenhouse Gas Control

View full text Add to dashboard Cite

“…23,24 With appropriate estimates of mean oil-and water-phase dimensions, the model will provide realistic estimates of diffusion times required to achieve significant recoveries of waterflood residual oil in both laboratory-scale corefloods and the field. A comparison between calculated diffusion times and those available from coreflood experiments will establish the validity of the model.…”

Section: Model Developmentmentioning

confidence: 99%

The Role of Molecular Diffusion Processes in Tertiary CO2 Flooding

Grogan

Pinczewski

1987

Journal of Petroleum Technology

115

View full text Add to dashboard Cite

This paper examines the role of molecular diffusion in the mobilization of waterflood residual oil.A numerical model that simulates the swelling of residual oil blobs by CO 2 diffusion through a blocking water phase is developed. The diffusion times calculated with the model are compared with those calculated in laboratory micromodel and coreflood experiments. The comparison shows that diffusion plays a major role in the mobilization and recovery of waterflood residual oil and that high unit or local displacement efficiencies are achieved when there is sufficient time for diffusion to swell the oil significantly. For the length scales normally associated with laboratory corefloods, diffusion is sufficiently rapid to reduce effectively the adverse effects of bypassing on overall recovery efficiency. This is not so for field floods, where bypassing of oil by injected CO 2 may be expected to occur on a much larger scale.

show abstract

“…4.16 through 4.18 of Ref. 13). Increasing the Damkohler number above zero causes a long tail on the effluent composition curve, and decreasing the Peclet number broadens the produced peak.…”

Section: Introductionmentioning

confidence: 89%

“…13 For pulse injections of the type used here, reduction of fbelow I causes the injected fluid to appear at the outlet before 1 PV has been injected (see, for example, Figs. 4.16 through 4.18 of Ref.…”

Section: Introductionmentioning

confidence: 99%

Effect of Pore Structure on Miscible Displacement in Laboratory Cores

Bretz

Specter

Orr

1988

SPE Reservoir Engineering

View full text Add to dashboard Cite

Observations of pore structure in thin-sections are related to the performance of stable, first-contact-miscible displacements in reservoir cores and then to simulations of displacement performance of CO 2 corefloods. Results of effluent composition measurements are reported for miscible displacements in seven core samples-three sandstones and four San Andres carbonates from west Texas or eastern New Mexico. Those displacements are interpreted by fitting the measured effluent compositions to the Coats-Smith (C-S) model, which represents the flow as occurring in flowing and stagnant fractions with mass transfer between them. Observations of thin-sections, including measurements of pore-size distributions and a simple measurement of spatial correlation of pore sizes, are also reported. Comparison of displacement results and thin-section data indicates that wide pore-size distributions and preferential flow paths are characterized in the C-S model by high dispersion coefficients and low flowing fractions. Simulations of the interactions of phase behavior and flow in nonuniform pore structures indicate that wide poresize distributions and preferential flow paths can significantly increase residual oil saturations (ROS's) in CO 2 floods over those for uniform pore structures. Thus, heterogeneities observable at the scale of a thin-section have significant effects in laboratory core but much smaller effects in displacements at field scale. Large-scale heterogeneities present in field floods, however, probably cause similar increases in residual saturation in some fields.

show abstract

Displacement of oil by carbon dioxide. Final report

Cited by 17 publications

References 0 publications

Enhanced gas recovery with CO2 sequestration: The effect of medium heterogeneity on the dispersion of supercritical CO2–CH4

Enhanced gas recovery with CO2 sequestration: The effect of medium heterogeneity on the dispersion of supercritical CO2–CH4

The Role of Molecular Diffusion Processes in Tertiary CO2 Flooding

Effect of Pore Structure on Miscible Displacement in Laboratory Cores

Contact Info

Product

Resources

About