Scholarlink

<p>This study investigates <i>Basil Seed Gum</i> (BSG), a naturally derived biopolymer, for chemical enhanced oil recovery (CEOR) under high-temperature/high-salinity conditions. BSG, extracted from <i>Ocimum basilicum L.</i>, was benchmarked against partially hydrolyzed polyacrylamide (HPAM), xanthan gum (XGU), and guar gum (GGU) via rheological, Fourier-transform infrared (FTIR), adsorption, and core flooding tests. Rheological results confirmed pronounced shear-thinning behavior, viscosity retention up to 100&#xa0;°C, and tolerance to 100,000 ppm NaCl, with performance comparable to XGU and superior to HPAM and GGU. Adsorption experiments on sandstone indicated lower maximum adsorption for BSG (~ 0.80&#xa0;mg/g) compared to HPAM (&gt; 1.40&#xa0;mg/g), especially at high salinity. Modeling showed the Redlich–Peterson isotherm provided the best fit (R² = 0.9958), indicating mixed adsorption mechanisms. In core flooding, seawater injection recovered 30.2% of OOIP, with water breakthrough at 0.50 PV. Subsequent BSG polymer flooding increased recovery to 58%, and chase brine raised final recovery to 72.1%, achieving an incremental oil recovery of 41.9% over seawater flooding alone. Findings suggest BSG offers a combination of thermal/salinity stability, low rock adsorption, and notable recovery gains, supporting its suitability as a natural polymer alternative in CEOR projects for challenging reservoirs.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

A comparative study of the rheological and adsorption behaviors of bio-and synthetic polymers for enhanced oil recovery

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年12月29日

查看全文
  • Ali Yarahmadi,
  • Ghasem Zargar,
  • Siavash Ashoori,
  • Abbas Khaksar Manshad

摘要

This study investigates Basil Seed Gum (BSG), a naturally derived biopolymer, for chemical enhanced oil recovery (CEOR) under high-temperature/high-salinity conditions. BSG, extracted from Ocimum basilicum L., was benchmarked against partially hydrolyzed polyacrylamide (HPAM), xanthan gum (XGU), and guar gum (GGU) via rheological, Fourier-transform infrared (FTIR), adsorption, and core flooding tests. Rheological results confirmed pronounced shear-thinning behavior, viscosity retention up to 100 °C, and tolerance to 100,000 ppm NaCl, with performance comparable to XGU and superior to HPAM and GGU. Adsorption experiments on sandstone indicated lower maximum adsorption for BSG (~ 0.80 mg/g) compared to HPAM (> 1.40 mg/g), especially at high salinity. Modeling showed the Redlich–Peterson isotherm provided the best fit (R² = 0.9958), indicating mixed adsorption mechanisms. In core flooding, seawater injection recovered 30.2% of OOIP, with water breakthrough at 0.50 PV. Subsequent BSG polymer flooding increased recovery to 58%, and chase brine raised final recovery to 72.1%, achieving an incremental oil recovery of 41.9% over seawater flooding alone. Findings suggest BSG offers a combination of thermal/salinity stability, low rock adsorption, and notable recovery gains, supporting its suitability as a natural polymer alternative in CEOR projects for challenging reservoirs.