Relationship between Foam Stability and the Generated Electrokinetic Signals 
 during FAWAG (Foam Assisted Water Alternate Gas) Processes

Omar, Shaziera; Jaafar, Mohd Zaidi; Ismail, Abdul Razak; Sulaiman, Wan Rosli Wan

doi:10.3923/jas.2014.1123.1130

Cited by 2 publications

(2 citation statements)

References 13 publications

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“…Unstable foam is generated by surfactant due to surfactant molecules that dynamically enter and leave the interface, leading to a short-term stabilization inside the reservoir [10]. In EOR, the foam stability could be potentially monitored using streaming potential measurement with permanent electrodes installed downhole [11], followed by its preliminary investigation in monitoring alkaline-surfactant-polymer (ASP) flooding employing the theory of electrical double layer (EDL) [12,13].…”

Section: Introductionmentioning

confidence: 99%

Aqueous foams stabilized with silica nanoparticle and alpha olefin sulfonates surfactant

Mohd¹,

Bakar²,

Awang³

et al. 2018

JMES

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Carbon dioxide (CO2) foams have been introduced to improve mobility of CO2 in CO2 flooding. However, using surfactant alone to stabilize CO2 foam has potential weaknesses such as high surfactant retention in porous media and the foam is thermodynamically unstable for a long-term. Nanoparticle has been an alternative in stabilizing CO2 foam longer. This study aims to analyze CO2 foam stability at varying concentrations of surfactant, silica nanoparticle (SNP) and brine. The additions of SNP in anionic surfactant of alpha olefin sulfonates (AOS)-water and in AOS-brine towards foam stability were demonstrated in this study. CO2 foam stability was measured through the foam height observation and bubble size analysis. The performance of SNP and AOS suspensions in stabilizing foam were observed at different concentrations of AOS (0.1, 0.3 and 0.5 wt%), SNP (0.1, 0.3 and 0.5 wt%) and brine (0.1, 1 and 5 wt%). The results revealed that the CO2 foams were most stable at 0.3 wt% SNP suspension in 0.5 wt% AOS-water. It was found that the most stable foams formed at concentration of 1 wt% of brine. Smaller and uniform bubble size has been produced at 0.3 wt% SNP in 0.5 wt% AOS solution. Thus, concentrations of surfactant, SNP and brine have significant effects on CO2 foam stability.

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Section: Introductionmentioning

confidence: 99%

Aqueous foams stabilized with silica nanoparticle and alpha olefin sulfonates surfactant

Mohd¹,

Bakar²,

Awang³

et al. 2018

JMES

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show abstract

“…Streaming potential measurement has been a promising reservoir monitoring technique, but many studies have been focused on the water flooding brine-saturated porous media and the recent analysis of streaming potential at varying brine salinity [7,12,13]. Limited studies have been conducted to measure streaming potential in monitoring EOR processes, such as water alternate gas (WAG) and foam assisted water alternate gas (FAWAG) by Anuar et al and Omar et al [52,53,54,55]. Basically WAG is a process where intermittent slugs of gas and water are injected into the reservoir.…”

Section: Measurement Of Streaming Potential In Monitoring Eormentioning

confidence: 99%

Measurement of Streaming Potential in Downhole Application: An Insight for Enhanced Oil Recovery Monitoring

et al. 2016

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Abstract. Downhole monitoring using streaming potential measurement has been developing in order to respond to actual reservoir condition. Most studies have emphasized on monitoring water flooding at various reservoir condition and improving the approaches of measurement. Enhanced Oil Recovery (EOR) could significantly improve oil recovery and the efficiency of the process should be well-monitored. Alkaline-surfactant-polymer (ASP) flooding is the most promising chemical EOR method due to its synergy of alkaline, surfactant and polymer, which could enhance the extraction of residual oil. However, limited studies have been focused on the application of streaming potential in EOR processes, particularly ASP. Thus, this paper aims to review the streaming potential measurement in downhole monitoring with an insight for EOR application and propose the potential measurement in monitoring ASP flooding. It is important for a preliminary study to investigate the synergy in ASP and the effects on oil recovery. The behaviour of streaming potential should be investigated when the environment of porous media changes with respect to ASP flooding. Numerical model can be generated from the experimental data to forecast the measured streaming potential signal during production associated with ASP flooding. Based on the streaming potential behaviour on foam assisted water alternate gas (FAWAG) and water alternate gas (WAG) processes, it is expected that the streaming potential could change significantly when ASP flooding alters the environment and surface properties of porous media. The findings could provide new prospect and knowledge in the relationship between streaming potential and ASP mechanisms, which could be a potential approach in monitoring the efficiency of the process.

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Relationship between Foam Stability and the Generated Electrokinetic Signals during FAWAG (Foam Assisted Water Alternate Gas) Processes

Cited by 2 publications

References 13 publications

Aqueous foams stabilized with silica nanoparticle and alpha olefin sulfonates surfactant

Aqueous foams stabilized with silica nanoparticle and alpha olefin sulfonates surfactant

Measurement of Streaming Potential in Downhole Application: An Insight for Enhanced Oil Recovery Monitoring

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