Residual oil saturation in Pre-salt Brazilian carbonates: A multi-approach core-to-log case study

Herlinger Jr, Ronaldo; Bonzanini, Leonardo André Fraga; Vidal, Alexandre Campane

doi:10.1016/j.jsames.2024.104905

Journal of South American Earth Sciences

2024

DOI: 10.1016/j.jsames.2024.104905

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Residual oil saturation in Pre-salt Brazilian carbonates: A multi-approach core-to-log case study

Ronaldo Herlinger Jr,

Leonardo André Fraga Bonzanini,

Alexandre Campane Vidal

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Production and Evaluation of Hydroxypropyl Starch as a Viscosifying Agent for Enhanced Oil Recovery

de Aguiar,

de Sá Gomes,

da Silva Licht

et al. 2024

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In this study, starch was obtained from rice wastes and the maximum extraction yield was 90.95 %. Chemical modification reactions were carried out by hydroxypropylation to obtain a modified starch extract, named 005A, soluble in synthetic injection brine. Extract 005A had a modified starch concentration of 1.24 %, with a pseudoplastic rheological profile and viscosities of 325.54 cP and 121.03 cP at temperatures of 25 and 60 °C, respectively. The application of extract 005A was evaluated by injectivity/filterability tests, which indicated a good filtration rate and viscosity loss of 3.81 % when passing the fluid through the filtering membrane. Stability tests indicated that the 005A extract had a viscosity loss of 21.35 %, at the temperature of 60 °C, after 60 days. The application of this extract enabled additional mineral oil recovery of 12.19 % in simulated core flooding tests. Therefore, the extract of hydroxypropyl starch is a promising viscosifying agent for Enhanced Oil Recovery (EOR) fluids.

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Production and Evaluation of Hydroxypropyl Starch as a Viscosifying Agent for Enhanced Oil Recovery

de Aguiar,

de Sá Gomes,

da Silva Licht

et al. 2024

ChemistrySelect

View full text Add to dashboard Cite

show abstract

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Residual oil saturation in Pre-salt Brazilian carbonates: A multi-approach core-to-log case study

Cited by 1 publication

References 67 publications

Production and Evaluation of Hydroxypropyl Starch as a Viscosifying Agent for Enhanced Oil Recovery

Production and Evaluation of Hydroxypropyl Starch as a Viscosifying Agent for Enhanced Oil Recovery

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