Laboratory investigation of chemical mechanisms driving oil recovery from oil-wet carbonate rocks

Purswani, Prakash; Karpyn, Zuleima T.

doi:10.1016/j.fuel.2018.07.078

Cited by 38 publications

(34 citation statements)

References 34 publications

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“…Contact angle as function of zeta potential for calcium carbonate equilibrated with stearic acid in a n-decane solution in the presence of water. θ = 0.0092 × ZP − 1.3531 ZP + 12.599 (6) It should be noted that the proposed equations are valid only for the calcite minerals used in this study, and for other minerals different equations may apply. Therefore, this framework needs to be tested for other minerals to be able to provide a package for such a relationship between zeta potential and contact angle, and hence, surface wettability.…”

Section: The Attempt To Derive An Equation For Contact Angle and Zetamentioning

confidence: 99%

“…As can be seen, zeta potential also reached its maximum at the same saturation level as in the contact angle data presented in Figure 7. Table 2 presents a comparison of the contact angle calculated from Equations (5) and (6) and the measured contact angles for calcite treated with selected stearic acid concentrations in n-decane. It can be seen that the percentage error between calculated and measured contact angles increases with stearic acid concentration, meaning that the proposed model cannot be used for any concentration above that at which the maximum adsorption occurs.…”

Section: Validation Of Proposed Equationsmentioning

confidence: 99%

“…A full understanding of reservoir wettability behaviour will yield an accurate estimation and the optimization of possible oil recovery [1][2][3][4][5][6]. Rock/fluid interaction is a major factor influencing wettability in hydrocarbon reservoirs, which in turn affects fluid distribution and flow properties.…”

Section: Introductionmentioning

confidence: 99%

“…Comparison of measured contact angle in the lab and calculated contact angle from Equations(5) and(6).…”

mentioning

confidence: 99%

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A New Framework to Quantify the Wetting Behaviour of Carbonate Rock Surfaces Based on the Relationship between Zeta Potential and Contact Angle

et al. 2020

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This study introduces a new framework to quantify the wettability of powdered carbonate rock from existing correlations between zeta potential and contact angle. The new framework has the potential to be faster and cheaper than conventional approaches and could increase confidence in surface wetting quantification, since the results are insensitive to the inherent heterogeneity of rock surfaces. The obtained results from experiments were used to develop a set of equations for determining the carbonate rock contact angle from streaming potential data. The equations were validated for the evaluation of changes in the wettability of carbonate rock using different stearic acid oily solutions. The contact angles calculated from the proposed equations were then compared with measured values on the calcite surface. The results show that the proposed framework was able to quantify the wettability of carbonate rock with an acceptable range of error of about 4%–14%.

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Section: The Attempt To Derive An Equation For Contact Angle and Zetamentioning

confidence: 99%

Section: Validation Of Proposed Equationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Comparison of measured contact angle in the lab and calculated contact angle from Equations(5) and(6).…”

mentioning

confidence: 99%

See 2 more Smart Citations

A New Framework to Quantify the Wetting Behaviour of Carbonate Rock Surfaces Based on the Relationship between Zeta Potential and Contact Angle

et al. 2020

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“…However, these stages are not efficient enough to produce a considerable amount of oil due to high capillary forces, which result in low oil recovery. [1][2][3] The methods to further increase the sweep efficiency and enhance oil recovery comprise tertiary recovery or enhanced oil recovery (EOR). Nowadays, applying new methods such as biotechnology and nanotechnology in EOR has aroused much attention.…”

Section: Introductionmentioning

confidence: 99%