1983
DOI: 10.2118/10725-pa
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Equilibrium Phase Compositions of CO2/Crude Oil Mixtures—Part 2: Comparison of Continuous Multiple-Contact and Slim-Tube Displacement Tests

Abstract: Orr Jr., Franklin M.; SPE; New Mexico Petroleum Recovery Research Center Petroleum Recovery Research Center Silva, Matthew K.; SPE; New Mexico Petroleum Recovery Research Center Petroleum Recovery Research Center Lien, Cheng-Li; SPE; New Mexico Petroleum Recovery Research Center Abstract Results of phase composition and density measurements for CO2/ crude-oil mixtures at 32C and four pressures are reported for a system in which liquid/liquid and liquid/liquid… Show more

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Cited by 61 publications
(31 citation statements)
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“…Table 3. Thus, the recovery at 8.3 MPa [1,200 psia] was about the same as was reported by Orr et al 12 in a slim-tube displacement at the same pressure and a slightly higher temperature. Clearly, the recovery at 8.3 MPa [1,200 psia] was much higher than that observed at 5.5 MPa [800 psia] with either N2 or CO 2 , Because the solubility of CO 2 was high in both displacements, we conclude that high solubility alone does not account for the very high displacement efficiency observed at 8.3 MPa [1,200 psia].…”
Section: Results Of Displcandment Exp4rimentssupporting
confidence: 86%
See 1 more Smart Citation
“…Table 3. Thus, the recovery at 8.3 MPa [1,200 psia] was about the same as was reported by Orr et al 12 in a slim-tube displacement at the same pressure and a slightly higher temperature. Clearly, the recovery at 8.3 MPa [1,200 psia] was much higher than that observed at 5.5 MPa [800 psia] with either N2 or CO 2 , Because the solubility of CO 2 was high in both displacements, we conclude that high solubility alone does not account for the very high displacement efficiency observed at 8.3 MPa [1,200 psia].…”
Section: Results Of Displcandment Exp4rimentssupporting
confidence: 86%
“…At the displacement conditions, the solubility of CO 2 in the oil was estimated to be about 70 mol %, about 10% higher than the solubility at 5.5 MPa [800 psia]. Phase-composition measurements reported by Orr et al 12 indicated that the weight fractions of hydrocarbons extracted by a CO 2 -rich phase increase from less than I wt% to somewhere in the range of 20 to 30 wt%. Thus, extraction was much more effective at the higher pressure.…”
Section: Results Of Displcandment Exp4rimentsmentioning
confidence: 95%
“…The formation of an ROS in areas of preferential flow may restrict flow in such zones and allow other areas to be swept. 5. Heterogeneities present at the scale of a thin-section account for displacement behavior observed in first-contact and multicontactmiscible floods at the laboratory core scale.…”
Section: Discussionmentioning
confidence: 99%
“…The detailed overview of the CO 2 -reach behaviour was presented by Calderon et al (2007). The important observations are that the liquid CO 2 -reach phase can contain up to 30% hydrocarbons (Orr, 1983) and that it may significantly effect oil recovery (LaForce, 2005). The phase diagram (in Pressure-Mole Percent of CO 2 coordinates) for the system with the CO 2 -reach phase is shown in Figure 4.…”
Section: Co 2 -Reach Liquid Phase Formationmentioning
confidence: 99%