CO2 Flooding in Joffre Viking Pool

Pyo, K.; Damian-Diaz, N.; Powell, Mark D.; Nieuwkerk, J. Van

doi:10.2118/2003-109

Cited by 20 publications

(17 citation statements)

References 3 publications

(4 reference statements)

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“…These rates indicate that for a CO 2 flooding project, the contents of the produced HCs (especially CH 4 ) in the produced CO 2 should be monitored and controlled during the entire CO 2 -EOR project. In this way, the reinjected CO 2 with some produced HCs is miscible or near-miscible with the reservoir oil at any time . In case the total HC content (especially y CH 4 ) is higher than a threshold value, some makeup pure CO 2 should be added into the produced gas (CO 2 + HCs) to increase its CO 2 content prior to its reinjection.…”

Section: Resultsmentioning

confidence: 99%

Effects of Four Important Factors on the Measured Minimum Miscibility Pressure and First-Contact Miscibility Pressure

Hou

Luo

2013

J. Chem. Eng. Data

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The vanishing interfacial tension (VIT) technique is applied to determine the minimum miscibility pressures (MMPs) and first-contact miscibility pressures (P max) of five light crude oil–CO2 systems from the measured equilibrium interfacial tensions (IFTs) at different equilibrium pressures. The equilibrium IFTs are measured under various experimental conditions by applying the axisymmetric drop shape analysis technique for the pendant drop case. It is found that in each IFT test, the measured equilibrium IFT is reduced almost linearly with the equilibrium pressure in two pressure ranges. The MMP of each light crude oil–CO2 system is thus determined from the measured equilibrium IFTs in range I by applying the VIT technique. The first-contact miscibility pressure (P max) of each light crude oil–CO2 system is extrapolated from the measured equilibrium IFTs in range II. Moreover, the test temperature, crude oil composition (dead/live oil), gas composition (pure/impure CO2), and initial gas–oil ratio (GOR) are studied to examine their specific effects. The experimental data show that the measured MMPs and P max values of five light crude oil–CO2 systems increase linearly with the temperature. The presence of CH4 in the CO2 phase results in substantially higher MMP and P max. An increased initial GOR leads to marginally higher MMP and P max.

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Section: Resultsmentioning

confidence: 99%

Effects of Four Important Factors on the Measured Minimum Miscibility Pressure and First-Contact Miscibility Pressure

Hou

Luo

2013

J. Chem. Eng. Data

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“…[6][7][8] Additionally, CO 2 EOR is an environmentally friendly technology that can reduce greenhouse gas effects. 5 During tertiary oil recovery, miscible CO 2 displacement can reduce the residual oil by 8 to 25% OOIP in a field-scale pilot test.…”

Section: Graphical Abstractmentioning

confidence: 99%

“…5 During tertiary oil recovery, miscible CO 2 displacement can reduce the residual oil by 8 to 25% OOIP in a eld-scale pilot test. [6][7][8] Additionally, CO 2 EOR is an environmentally friendly technology that can reduce greenhouse gas effects. 9,10 Understanding the dynamic characteristics of uid ow in CO 2 miscible displacement is important for predicting the in situ mixing position and oil production in oilelds.…”

Section: Introductionmentioning

confidence: 99%

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Dynamic stability characteristics of fluid flow in CO₂ miscible displacements in porous media

et al. 2015

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Graphical AbstractThe dynamic stability characteristics of fluid flows in miscible displacement processes were investigated by using a magnetic resonance imaging apparatus under reservoir conditions of 8.5 to 9.5 MPa and 37.8°C. It was found that although the whole mixing zone length had no obvious change with pressure, a higher pressure compressed the mixing zone and led to an unstable mixing front above the critical velocity.2 much as 60% OOIP, which is more than water displacement (44% OOIP). 5 During tertiary oil recovery, miscible CO 2 displacement can reduce the residual oil by 8 to 25% OOIP in a field-scale pilot test. [6][7][8] Additionally, CO 2 EOR is an environmentally friendly technology that can reduce greenhouse gas effects. 9,10 Understanding the dynamic characteristics of fluid flow in CO 2 miscible displacement is important for predicting the in situ mixing position and oil production in oilfields. For example, in Chevron's McElroy Field 11 in West Texas, USA, a variety of porosities, permeability and heterogeneity cause the field to have various flooded zones and oil recovery efficiencies. 12 The effects of CO 2 miscible displacements have been previously discussed in various numerical and experimental studies, such as flow rate, heterogeneity, diffusion, viscosity and density differences, grain size distribution and grain shapes. 13 Experimental studies have been performed to investigate the flow characteristics of miscible displacement processes. Al-Wahaibi et al. 14 studied the effects of the flow rate, the gravity effect, the bead size and the length scale on gas-oil non-equilibrium oil recoveries for multi-contact miscible (MCM) displacement at normal pressures and temperatures. The miscible non-equilibrium increased with flow rate but independent of the permeability and the length of the bead-pack. Torabi and Asghari 15 investigated the effects of connate water saturation, the matrix permeability and the oil viscosity on the performance of gravity drainage from the matrix into the fractures. The ultimate oil recovery was less sensitive to the matrix permeability at pressures near or above the minimum miscibility pressure (MMP).Rashid et al. 16 focused on the factors affecting oil and gas recovery in CO 2 -EOR processes. Core-flooding experiments showed that reservoir permeability differences of up to 1 order of magnitude did not affect the CO 2 -EOR factor. Wylie and Mohanty 17, 18 investigated the effects of water saturation and wettability on the bypassing and mass transfer under near miscible conditions of gas displacements. Torabi and Asghari 19 measured the effects of the operating pressure, matrix permeability and oil in place and the connate water saturation on oil recoveries for CO 2 huff-and-puff processes. They observed a drastic increase in the recovery factor from immiscible to the near-miscible/miscible pressures 20 and found that the recovery may decrease far above the miscibility. Trivedi and Babadagli 20 examined the effects of flow rate and reservoir back-pressure on the c...

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“…The miscibility can decrease the interfacial tension by injecting supercritical CO 2 , which can dramatically enhance oil recovery. Field applications present miscible CO 2 flooding can enhance oil recovery by 8-15% (Winter and Jean, 2001;Espie, 2003;Pyo et al, 2003;Bachu and Shaw, 2004).…”

Section: Introductionmentioning

confidence: 99%

CO2 mobility control and sweep efficiency improvement using starch gel or ethylenediamine in ultra-low permeability oil layers with different types of heterogeneity

Zhao

Hao

Hou

et al. 2015

Journal of Petroleum Science and Engineering

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CO2 Flooding in Joffre Viking Pool

Cited by 20 publications

References 3 publications

Effects of Four Important Factors on the Measured Minimum Miscibility Pressure and First-Contact Miscibility Pressure

Effects of Four Important Factors on the Measured Minimum Miscibility Pressure and First-Contact Miscibility Pressure

Dynamic stability characteristics of fluid flow in CO₂ miscible displacements in porous media

CO2 mobility control and sweep efficiency improvement using starch gel or ethylenediamine in ultra-low permeability oil layers with different types of heterogeneity

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CO2 Flooding in Joffre Viking Pool

Cited by 20 publications

References 3 publications

Effects of Four Important Factors on the Measured Minimum Miscibility Pressure and First-Contact Miscibility Pressure

Effects of Four Important Factors on the Measured Minimum Miscibility Pressure and First-Contact Miscibility Pressure

Dynamic stability characteristics of fluid flow in CO2 miscible displacements in porous media

CO2 mobility control and sweep efficiency improvement using starch gel or ethylenediamine in ultra-low permeability oil layers with different types of heterogeneity

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Dynamic stability characteristics of fluid flow in CO₂ miscible displacements in porous media