Removal of oil from sandstone rocks by solid-liquid extraction using oil phase-free microemulsion systems

Araújo, Carolina Rayanne Barbosa de; Silva, Dennys Correia da; Arruda, Guilherme Mentges; Rodrigues, Marcos Allyson Felipe; Neto, Alcides de Oliveira Wanderley

doi:10.1016/j.jece.2020.104868

Cited by 12 publications

(2 citation statements)

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“…The selection of these surfactants allowed the understanding of the behavior regarding the degree of ethoxylation and allowed the evaluation of their performance regarding the affinity to the oil. Surfactants with a lower degree of ethoxylation have lower HLB, i.e., greater affinity for the oil phase (non-polar), whereas those with a higher degree of ethoxylation (higher HLB) have greater affinity for the aqueous phase (polar) . The concentration of the surfactant chosen was 0.5% by mass, which represented 100% above the c.m.c of NP-100EO and 316% above the c.m.c of NP-10EO.…”

Section: Methodsmentioning

confidence: 99%

“…Surfactants with a lower degree of ethoxylation have lower HLB, i.e., greater affinity for the oil phase (non-polar), whereas those with a higher degree of ethoxylation (higher HLB) have greater affinity for the aqueous phase (polar). 43 The concentration of the surfactant chosen was 0.5% by mass, which represented 100% above the c.m.c of NP-100EO and 316% above the c.m.c of NP-10EO. For the tests, the flow rate of the surfactant solution chosen was 0.25 mL/min, similar to the steam flow rate, and the temperature was 40 °C, equal to the temperatures of Brazilian reservoirs.…”

Section: Hybrid Recovery (Steam−surfactant Injection)mentioning

confidence: 99%

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Increasing Recovery Factor in Heavy Oil Fields Using Alternating Steam and Surfactant Injection

et al. 2023

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Fossil fuels, particularly oil, currently dominate the global energy matrix. With a projected 30% increase in demand by 2040 compared to 2010, it is crucial to maintain current oil production levels. To achieve this, it is necessary to increase the oil recovery factor through alternative methodologies that will improve oil extraction from reservoirs and exploration viability in mature fields. While previous studies have investigated thermal and chemical methods to increase the recovery factor, this study aims to explore the synergy between steam and non-ionic surfactants varying the surfactant degrees of ethoxylation and injection configurations. The experimental study investigated the application of solutions of ethoxylated nonylphenol surfactants (NP-10EO and NP-100EO) combined with steam injection into banks at different concentrations and injection configurations. The results showed that combining the NP-100EO surfactant (0.5% m/m) with steam demonstrated the highest oil recovery (64.88%) compared to conventional steam (45.19%). The most effective configurations were surfactant + steam + surfactant (65.06%) and surfactant + steam + water (65.88%). These findings suggest that the proposed technique of steam injection and surfactant solution could be a promising alternative. By revitalizing marginal fields, this technique could help extend production and stimulate local and regional development.

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Section: Methodsmentioning

confidence: 99%

Section: Hybrid Recovery (Steam−surfactant Injection)mentioning

confidence: 99%