Low Salinity Waterflooding in Sandstone Reservoir Containing Enriched Potassium Ion Concentration

Srisuriyachai, Falan; Peerakham, Chatchanakorn

doi:10.3997/2214-4609.201701296

Cited by 2 publications

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“…Figure 1. Effects of ions in formation water on oil-wet condition in sandstone; weak adsorption due to large hydrated-size ion (left) and strong adsorption due to small hydrated-size ion (right), [9] Figure 2. Oil recovery mechanism in sandstone by means of low salinity; replacing of potassium ion onto the site of calcium ion (left) and liberation of oil in a form of calcium carboxylate complex (right), [8] Once the overall mechanism is completed, oil is liberated and carbonate surface turns to a more water-wet condition again.…”

Section: Introductionmentioning

confidence: 99%

Evidence of Multi-Component Ion Exchange in Dolomite Formation during Low Salinity Waterflooding

Srisuriyachai

Meekangwal

2017

IOP Conf. Ser.: Earth Environ. Sci.

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Section: Introductionmentioning

confidence: 99%

Evidence of Multi-Component Ion Exchange in Dolomite Formation during Low Salinity Waterflooding

Srisuriyachai

Meekangwal

2017

IOP Conf. Ser.: Earth Environ. Sci.

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“…In addition, this could be explained with zeta potential measurement that beyond four times of sulfate concentration, there was no further surface charge alteration. Srisuriyachai et al (2017) conducted experiment mainly emphasizing on imbibition test dictating how fast each ion can replace the divalent ion in water film between sandstone surface and crude oil. The experiments were divided into two parts.…”

Section: Effects Of Ion Compositions In Injected Water On Low Salinit...mentioning

confidence: 99%

“…The results showed that potassium ion which is more reactive than sodium ion can displace higher amount of calcium, supporting the results from the first section. Srisuriyachai and Peerakham (2017) used coreflooding test to study effects of potassium ion in formation water. The samples of formation water were prepared to have different ratios of sodium to potassium including 150:1 (low potassium amount) and 50:1 (high potassium amount).…”

Section: Effects Of Ion Compositions In Injected Water On Low Salinit...mentioning

confidence: 99%

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Effects of Monovalent Ions on Low Salinity Waterflooding in Shaly-sandstone Reservoir

Yomchan

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Multi-component Ion Exchange (MIE) was proved to be a major mechanism occurred during Low Salinity Waterflooding (LSWF). Reduction of both total salinity and concentration of divalent ions of injected water together with a presence of monovalent ion results in dissolution of divalent ions linking between rock surface and oil. As a consequence, oil is liberated from rock surface. This study aims to study effects of monovalent ions in MIE mechanism. Stirring test is�performed and results�show that ion with less�hydration radius�tends to be more active in MIE;�hence, potassium ion and cesium ion illustrate potential in oil recovery mechanism.�Then, the best three water formulations can be selected to perform imbibition and coreflood tests and both tests show results in the same direction. Pure cesium ion�is very fast in MIE mechanism while pure potassium ion�with a few water molecules can also function well in oil recovery. However, its mobility is less than cesium ion. The combination of cesium-sodium-calcium at 20-40-40�tends to be similar results of�pure potassium ion. In comparision, Pure cesium ion�is the best water formulation enhacing recovery factor�up to 0.26. However,�complexometric titration result�shows remarkable contrast to the stirring test that both cesium ion and potassium ion tend to displace magnesium ion better than calcium ion. In conslusion,�this study has already proved the theory regarding the hydrate of monovalent ion.

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Low Salinity Waterflooding in Sandstone Reservoir Containing Enriched Potassium Ion Concentration

Cited by 2 publications

References 0 publications

Evidence of Multi-Component Ion Exchange in Dolomite Formation during Low Salinity Waterflooding

Evidence of Multi-Component Ion Exchange in Dolomite Formation during Low Salinity Waterflooding

Effects of Monovalent Ions on Low Salinity Waterflooding in Shaly-sandstone Reservoir

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