Wettability alteration by magnesium ion binding in heavy oil/brine/chemical/sand systems — Analysis of electrostatic forces

Liu, Qiang; Dong, Mingzhe; Asghari, Koorosh; Tu, Yun

doi:10.1016/j.petrol.2007.03.010

Cited by 42 publications

(30 citation statements)

References 16 publications

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“…The rock/brine/crude oil interaction can modify the adhesion forces guiding by capillary forces between rock surfaces and imbibing fluid turns the rock more waterwet (Liu et al 2007). Also, possible dissolutions can alter the rock wetting properties, which leads to an additional oil recovery (Zhang and Austad 2006).…”

Section: Cumulative Oil Recovery By Spontaneous Imbibitionmentioning

confidence: 99%

“…Wettability alteration studies on carbonates (Liu et al 2007;Zhang et al 2007) showed the potential of altering the wetting properties by modifying the chemical composition of the injected water. Some authors call ''smart water'' the water modified with such purpose, pointing to the ions that present more potential to provoke the effect (Zhang et al 2007;Strand et al 2006;Zhang and Austad 2006).…”

Section: Introductionmentioning

confidence: 99%

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Oil recovery and wettability alteration in carbonates due to carbonate water injection

Ruidiaz

Winter

Trevisan

2017

J Petrol Explor Prod Technol

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Enhanced oil recovery in carbonates due to wettability alteration has received much attention recently. In contrast to sandstones reservoirs, carbonates are neutralwet or preferentially oil-wet. The use of CO 2 dissolved into water has emerged as an alternative method for EOR operations in carbonates reservoirs. In the present paper, oil recovery from two carbonate outcrop rocks was evaluated with different brines containing CO 2 . The evaluation included a qualitative approach by spontaneous imbibition tests and a quantitative assessment by the Amott-Harvey index. The rocks tested were limestone and dolomite samples known as analogous to Brazilian pre-salt reservoirs. The testing fluids were a medium gravity crude oil, seawater concentration brine, formation equivalent brine and the carbonated version of these brines. Results shown additional oil recovery directly associated with wettability alteration driven by brine concentration switches. Oil recovery increases were observed independently if the brine concentration decreased or increased over the water replacement process. Wettability alteration took place in both carbonate types starting at oil-wet to neutral-wet conditions. Similar tests carried out with equivalent carbonated brines showed similar alterations in the wetting properties, trending no dependence on salt concentration. However, CO 2 and its derived ions dissolved in the brines seem to inhibit the wettability alteration mechanism.

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Section: Cumulative Oil Recovery By Spontaneous Imbibitionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Oil recovery and wettability alteration in carbonates due to carbonate water injection

Ruidiaz

Winter

Trevisan

2017

J Petrol Explor Prod Technol

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“…The change in wettability was caused by adsorption of soap molecules (formed by the interfacial reaction) onto the solid surface. Liu et al (2007) investigated the mechanism of wettability alteration in heavy oil/brine/sand system by analyzing the electrostatic forces. They deduced that if the injected water contains both Na 2 CO 3 and Mg 2 þ ions, wettability of the sand could be altered from water-wet to preferential oil-wet by the magnesium ion binding.…”

Section: Formation Of O/w Emulsion Emulsification and Entrainmentmentioning

confidence: 99%

Investigation of the microscopic displacement mechanisms and macroscopic behavior of alkaline flooding at different wettability conditions in shaly glass micromodels

Mehranfar

Ghazanfari

2014

Journal of Petroleum Science and Engineering

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“…It has been extensively reported that the solids surface properties could be well controlled in solutions with proper pH value, metal ions, surfactants, or biodegradable polymers. 48,[54][55][56][57] The wettability alteration of the oil sand solids might be attributed to the fact that most of the organic matters were removed from the solids surface through strong interaction between the biosurfactants and adsorbed hydrocarbons.…”

Section: Discussionmentioning

confidence: 99%

Application of microbial enhanced oil recovery technology in water‐based bitumen extraction from weathered oil sands

et al. 2014

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When using the water-based extraction processes (WBEPs) to recover bitumen from the weathered oil sands, very low bitumen recovery arisen from the poor liberation of bitumen from sand grains is always obtained. Application of microbial enhanced oil recovery (MEOR) technology in WBEPs to solve the poor processability of the weathered ore was proposed. It was found that processability of the microbial-treated weathered ore was greatly improved. The improved processability was attributed to the biosurfactants production in the culture solution, alteration of the solids wettability, degradation of the asphaltene component, and the decrease of the bitumen viscosity, which collectively contributed to the bitumen liberation from the surface of sand grains. Although it still has many issues to be solved for an industrial application of the MEOR technology in oil sands separation, it is believed that the findings in this work promote the solution to the poor processability of the weathered ore.

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Wettability alteration by magnesium ion binding in heavy oil/brine/chemical/sand systems — Analysis of electrostatic forces

Cited by 42 publications

References 16 publications

Oil recovery and wettability alteration in carbonates due to carbonate water injection

Oil recovery and wettability alteration in carbonates due to carbonate water injection

Investigation of the microscopic displacement mechanisms and macroscopic behavior of alkaline flooding at different wettability conditions in shaly glass micromodels

Application of microbial enhanced oil recovery technology in water‐based bitumen extraction from weathered oil sands

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