Nano-Sized Particles for EOR

Skauge, Tormod; Spildo, Kristine; Skauge, Arne

doi:10.2118/129933-ms

Cited by 96 publications

(63 citation statements)

References 21 publications

(15 reference statements)

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“…It is thought that the accumulation of nanoparticles at the entrance of pore throats would produce a higher pressure in the adjunct pore channel, in which the oil trapped would be mobilised. Similar observations have been reported by a few previous studies 3,39 . The presence of oil phase may promote the jamming effect as the nanoparticles were diffused to the oil-water interfaces and were confined there, consistent with the enriching of particle concentration at the oil/water interface phenomenon, as identified by a few prior studies [54][55][56] .…”

Section: Figure 12supporting

confidence: 93%

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Nanoparticle-Assisted Water-Flooding in Berea Sandstones

Azmi

Raza

et al. 2016

Energy Fuels

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ABSRACT:The use of nanoparticles (NP) to improve reservoir characterisation or to enhance oil recovery (EOR) has recently received intensive interest; however there are still many un-resolved questions. This work reports a systematic study of the effect of rutile TiO 2 nanoparticle-assisted brine flooding. Rutile ellipsoid TiO 2 nanoparticles were synthesised and stabilised by tri-sodium citrate dehydrate for brine flooding of water-wet Berea sandstone cores. Careful characterisation of the rock samples and nanomaterials before and after the flooding was conducted, and the relative contributions to the modified flooding results from the stabiliser and the nanoparticles of different concentrations were examined. The oil recovery performance was evaluated both at break-through (BT) point and at the end of flooding (~3.2 pore volumes). Nanoparticle migration behavior was also investigated in order to understand the potential mechanisms for oil recovery. The results showed that both nanoparticle transport rate and EOR effect were strongly dependent on the particle concentration. The oil recovery efficiency at the BT point was found to increase at low nanoparticle concentrations but decrease at higher values. A maximum 33% increase of the recovery factor was observed at the BT point for a TiO 2 concentration of 20 ppm, but higher nanoparticle concentrations usually had higher ultimate recovery factors. The presence of oil phase was found to accelerate the particle migration though the core. The discussion of various mechanisms suggested that the improvement in the mobility ratio, possible wettability change and log-jamming effect were responsible for the observed phenomena.

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Section: Figure 12supporting

confidence: 93%

“…Recently, the injection of nanoparticles (NP) has been proposed as a potential means to improve reservoir characterisation and to increase oil production, resulting in the term of NanoEOR [3][4][5] .…”

Section: Introductionmentioning

confidence: 99%

Nanoparticle-Assisted Water-Flooding in Berea Sandstones

Azmi

Raza

et al. 2016

Energy Fuels

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“…Researchers have concluded that nanotechnology has the greatest usage in chemical EOR methods [26]. Therefore, in some studies, the role of nanoparticles in EOR operations has been reported [27][28][29]. Table 1 shows some nano particles utilized for enhanced oil recovery in IFT process [30].…”

Section: Introductionmentioning

confidence: 99%

A review on applications of nanotechnology in the enhanced oil recovery part A: effects of nanoparticles on interfacial tension

2016

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Chemical enhanced oil recovery is another strong growing technology with the potential of a step change innovation, which will help to secure future oil supply by turning resources into reserves. While Substantial amount of crude oil remains in the reservoir after primary and secondary production, conventional production methods give access to on average only one-third of original oil in place, the use of surfactants and polymers allows for recovery of up to another third of this oil. Chemical flooding is of increasing interest and importance due to high oil prices and the need to increase oil production. Research in nanotechnology in the petroleum industry is advancing rapidly and an enormous progress in the application of nanotechnology in this area is to be expected. Nanotechnology has the potential to profoundly change enhanced oil recovery and to improve mechanism of recovery. This paper, therefore, focuses on the reviews of the application of nano technology in chemical flooding process in oil recovery and reviews the application nano in the polymer and surfactant flooding on the interfacial tension process.

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“…Kanj et al (2009) investigated the transport of nanoparticles in porous media and estimated the optimum size of nanoparticles effectively used in reservoir rocks. In addition, Skauge et al (2010) studied the flow behavior of silica nanoparticles in porous media and found silica nanoparticles could move easily in porous media. Owing to their inherent conditions in reservoirs, they pose no environmental impacts.…”

Section: Introductionmentioning

confidence: 99%

Performance improvement of ionic surfactant flooding in carbonate rock samples by use of nanoparticles

Ahmadi

Sheng

2016

Pet. Sci.

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Various surfactants have been used in upstream petroleum processes like chemical flooding. Ultimately, the performance of these surfactants depends on their ability to reduce the interfacial tension between oil and water. The surfactant concentration in the aqueous solution decreases owing to the loss of the surfactant on the rock surface in the injection process. The main objective of this paper is to inhibit the surfactant loss by means of adding nanoparticles. Sodium dodecyl sulfate and silica nanoparticles were used as ionic surfactant and nanoparticles in our experiments, respectively. AEROSIL Ò 816 and AEROSIL Ò 200 are hydrophobic and hydrophilic nanoparticles. To determine the adsorption loss of the surfactant onto rock samples, a conductivity approach was used. Real carbonate rock samples were used as the solid phase in adsorption experiments. It should be noted that the rock samples were water wet. This paper describes how equilibrium adsorption was investigated by examining adsorption behavior in a system of carbonate sample (solid phase) and surfactant solution (aqueous phase). The initial surfactant and nanoparticle concentrations were 500-5000 and 500-2000 ppm, respectively. The rate of surfactant losses was extremely dependent on the concentration of the surfactant in the system, and the adsorption of the surfactant decreased with an increase in the nanoparticle concentration. Also, the hydrophilic nanoparticles are more effective than the hydrophobic nanoparticles.

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Nano-Sized Particles for EOR

Cited by 96 publications

References 21 publications

Nanoparticle-Assisted Water-Flooding in Berea Sandstones

Nanoparticle-Assisted Water-Flooding in Berea Sandstones

A review on applications of nanotechnology in the enhanced oil recovery part A: effects of nanoparticles on interfacial tension

Performance improvement of ionic surfactant flooding in carbonate rock samples by use of nanoparticles

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