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Keywords: IFT
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Proceedings Papers

Paper presented at the SPE Conference at Oman Petroleum & Energy Show, March 21–23, 2022
Paper Number: SPE-200182-MS
... compatibility, microemulsion phase behavior, and the interfacial tension (IFT) between oil and surfactant solutions in high salinity brine and at 90˚C. Comprehensive performance of the surfactants was evaluated, including adsorption of the surfactants onto the carbonate rocks and the long-term stability at 95˚C...
Proceedings Papers

Paper presented at the SPE Conference at Oman Petroleum & Energy Show, March 21–23, 2022
Paper Number: SPE-200273-MS
... of the surfactants as imbibition agents on improving oil production in carbonate reservoirs was investigated. A formulation with ultra-low interfacial tension (IFT) was introduced and the mechanisms resulting in such low IFT were probed and discussed. Two APG surfactants were studied. Compatibility was evaluated...
Proceedings Papers

Paper presented at the SPE EOR Conference at Oil and Gas West Asia, March 26–28, 2018
Paper Number: SPE-190380-MS
.... The interfacial tension (IFT) between various solutions containing alkali, biosurfactant and biopolymer was measured. Interfacial tension values in the range of 0.02-0.1mN/m were achieved at low biosurfactant and alkali concentrations. The interaction of the biopolymer with the brine, biosurfactant and alkali...
Proceedings Papers

Paper presented at the SPE EOR Conference at Oil and Gas West Asia, March 26–28, 2018
Paper Number: SPE-190377-MS
.... In the absence of NPs, concentration of both anionic and cationic surfactants should be tuned within a narrow window, near CMC, to create stable heavy oil in water emulsions. It was found that there is a threshold for IFT, obtained at the CMC, which should be met to have stable oil in water emulsions...
Proceedings Papers

Paper presented at the SPE EOR Conference at Oil and Gas West Asia, March 26–28, 2018
Paper Number: SPE-190385-MS
..., especially at the three phase (quartz/oil/water) interfaces. present the experimental data of interfacial tension (IFT) between live oil and water, and study the interfacial tension (IFT) trend reversal with supplemental IFT measurements before and after asphaltene precipitation. utilize the solubility...
Proceedings Papers

Paper presented at the SPE EOR Conference at Oil and Gas West Asia, March 21–23, 2016
Paper Number: SPE-179759-MS
... challenge in SP flooding is to develop surfactants with highly effective interfacial tension (IFT) reducing ability, low adsorption and good oil displacement ability especially at high salinity reservoir conditions. Yumen oilfield is a high salinity sandstone reservoir. It is a mature oilfield developed...
Proceedings Papers

Paper presented at the SPE EOR Conference at Oil and Gas West Asia, March 31–April 2, 2014
Paper Number: SPE-169663-MS
... properties of mixtures. Molecular charge distributions and associated charge distribution properties, so-called sigma moments, can be calculated and used as input parameters for various physical models to predict IFT of fluid mixtures. In this paper we present and compare four different and complementary...
Proceedings Papers

Paper presented at the SPE EOR Conference at Oil and Gas West Asia, March 31–April 2, 2014
Paper Number: SPE-169730-MS
... with the heavy oil. They increased the IFT of oil-brine system. Moreover, the two DESs altered the wettability of the sandstone rock surfaces from strongly oil-wet to neutral-wet conditions. The core flooding runs at different temperatures showed high potential of using these DESs for enhancing heavy oil...
Proceedings Papers

Paper presented at the SPE EOR Conference at Oil and Gas West Asia, April 16–18, 2012
Paper Number: SPE-153493-MS
... experiments include stability test, IFT measurements and core flooding. A crude oil sample with API gravity around 37.7 was used. The TDS of produced water is 1.6 wt% ( Table 2 ). Sodium carbonate was used as alkali. A partially (2530%) hydrolyzed polyacrylamide with a molecular weight of approximately 8...

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