Temperature effects on the heavy oil/water relative permeabilities of carbonate rocks

Sola, Behnam Sedaee; Rashidi, Fariborz; Babadagli, Tayfun

doi:10.1016/j.petrol.2007.02.005

Cited by 59 publications

(8 citation statements)

References 27 publications

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“…This is in agreement with the statement by Nakornthap and Evans [19], that Cassé and Ramey [25], Weinbrandt et al [26], and Gray et al [27] found that absolute permeability decreases with temperature. Sedaee Sola et al [28] reported that limestone showed a more oil-wet (as indicated by a shift of the relative permeability curves) behavior when temperature increased to …”

Section: Mutual Solubility Datamentioning

confidence: 99%

Effect of Temperature, Wettability and Relative Permeability on Oil Recovery from Oil-wet Chalk

Hamouda

Karoussi

2008

Energies

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It is customary, for convenience, to use relative permeability data produced at room temperature. This paper shows that this practice underestimates oil recovery rates and ultimate recovery from chalk rocks for high temperature reservoirs. Above a certain temperature (80°C in this work) a reduction of oil recovery was observed. The reduction in oil recovery is reflected by the shift of relative permeability data towards more oil-wet at high temperature (tested here 130°C). However, both IFT and contact angle measurements indicate an increase in water wetness as temperature increases, which contradict the results obtained by relative permeability experiments. This phenomenon may be explained based on the total interaction potential, which basically consists of van der Waals attractive and short-range Born repulsive and double layer electrostatic forces. The fluid/rock interactions is shown to be dominated by the repulsive forces above 80°C, hence increase fine detachment enhancing oil trapping. In other words the indicated oil wetness by relative permeability is misleading.

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Section: Mutual Solubility Datamentioning

confidence: 99%

Effect of Temperature, Wettability and Relative Permeability on Oil Recovery from Oil-wet Chalk

Hamouda

Karoussi

2008

Energies

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“…An increase in temperature will also reduce the viscosity of the oil. This makes the flow resistance decrease when oil is discharged from porous media, which is beneficial to the oil drainage process (Sola et al, 2007). 3.…”

Section: Imbibition Efficiency On Standard Core Plugsmentioning

confidence: 99%

Differences in Imbibition Efficiency Between Bedding and Tectonic Fractures in the Lucaogou Formation in the Jimusar Sag: Evidence From Simulation Experiments

Liang

Liu²,

Li³

et al. 2022

Front. Earth Sci.

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In addition to tectonic fractures, the ubiquitous and important bedding fractures are often overlooked in the imbibition processes. Based on the identification of different fracture types in tight sandstone from the middle Permian Lucaogou Formation in the Jimusar Sag, NW China, spontaneous imbibition of water experiments was carried out, aiming to investigate the effect of tectonic and bedding fractures on hydrocarbon recovery efficiency in tight reservoir rocks. The results show that the difference in connectivity between the vertical (tectonic fractures) and horizontal (bedding fractures) directions of pores and pore throats is the main reason for the distinction in microscale permeability and, hence, fluid imbibition. The difference in the time required for imbibition between bedding and tectonic fractures is subtle, but the former is slightly lower than the latter in terms of imbibition depth and efficiency. Higher temperatures can shorten the reaction time of imbibition. On the basis that the tectonic fractures are opened, opening the same scale of bedding can increase the imbibition effectiveness by 8.7% at reservoir conditions (27 MPa, 80°C), and the closer to the fracture, the higher the imbibition efficiency in the matrix. The samples with higher porosity and permeability per unit volume have high imbibition oil recovery. However, the imbibition efficiency of the samples with lower porosity and permeability is higher, i.e., the final imbibition efficiency is inversely proportional to porosity and permeability.

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“…The influence of temperature rise on the relative permeability curve can be classified into the following scenarios: the oil-water two-phase relative permeability (a) increases (Maini and Okazawa, 1987;Schembre et al, 2006;Wang et al, 2013;Zhang et al, 2013;Ma, 2018;Qin et al, 2018;Esmaeili S et al, 2020b); (b) decreases (Watson and Ertekin, 1988;Sedaee et al, 2007); (c) increases in the single phase or has no obvious regularity (Sinnokrot, 1969;Torabzadeh and Handy, 1984;Maini and Batycky, 1985;Wang et al, 2017). Recently, Bennion et al (2006) adopted the unsteady-state method to study the law of change of the sandstone heavy oil-water two-phase permeability curve in the experimental temperature range of 10-275°C…”

Section: Introductionmentioning

confidence: 99%

Experimental studies on influence of temperature on relative permeability curves in sandstone reservoirs

Zhai

Xing

et al. 2021

Energy Exploration & Exploitation

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It is crucial to obtain the representative relative permeability curves for related numerical simulation and oilfield development. The influence of temperature on the relative permeability curve remains unclear. An unsteady method was adopted to investigate the influence of temperature (range from 25–130 °C) on the oil–water relative permeability curve of sandstone reservoirs in different blocks. Then, the experimental data was analyzed by using an improved Johnson–Bossler–Naumann method. Results reveal that with the increase in temperature within a certain temperature range: (1) the relative permeability of the oil and water phases increases; (2) the irreducible water saturation increases linearly, whereas the residual oil saturation decreases nonlinearly, and the oil recovery factor increases; and (3) the saturation of two equal permeability points moves to the right, and hydrophilicity becomes stronger. The findings will aid future numerical simulation studies, thus leading to the improvement of oil displacement efficiency.

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Temperature effects on the heavy oil/water relative permeabilities of carbonate rocks

Cited by 59 publications

References 27 publications

Effect of Temperature, Wettability and Relative Permeability on Oil Recovery from Oil-wet Chalk

Effect of Temperature, Wettability and Relative Permeability on Oil Recovery from Oil-wet Chalk

Differences in Imbibition Efficiency Between Bedding and Tectonic Fractures in the Lucaogou Formation in the Jimusar Sag: Evidence From Simulation Experiments

Experimental studies on influence of temperature on relative permeability curves in sandstone reservoirs

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