Experimental Evaluation of 3-Pentanone-Assisted CO2 Enhanced Oil Recovery in Low-Permeability Reservoirs
低浸透性貯留層における3-ペンタノン支援CO2原油増進回収の実験的評価 (AI 翻訳)
Yisheng Hu, Heng Wang, Ping Guo, Baixi Chen
🤖 gxceed AI 要約
日本語
本論文は、低浸透性貯留層において3-ペンタノンを添加したCO2原油増進回収（EOR）を実験的に評価した。3-ペンタノンは超臨界CO2に良好に溶解し、界面張力を低減し最小混相圧力を効果的に低下させた。ヒッフ・アンド・パフ実験では純CO2より10.78%高い回収率73.12%を達成し、フラッディング実験でも49.56%の回収率を示した。CCUS技術の効率向上に貢献する基礎的知見を提供する。
English
This paper experimentally evaluates 3-pentanone-assisted CO2 enhanced oil recovery (EOR) in low-permeability reservoirs. 3-pentanone dissolves well in supercritical CO2, reduces interfacial tension, and effectively lowers minimum miscibility pressure. Huff 'n' puff experiments achieved 73.12% oil recovery (10.78% higher than pure CO2), and flooding experiments reached 49.56%. The study provides fundamental insights for improving CCUS technology efficiency.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本はCCUS技術開発に注力しており、特にCO2有効利用は重要課題。本研究成果は国内のCO2圧入効率向上や貯留層特性に応じた添加剤選定の参考となる。ただし、日本では原油生産よりもCO2貯留が主目的であり、EORへの直接適用は限定的。
In the global GX context
CCUS is critical for global net-zero targets. This study advances understanding of chemical additives to improve CO2 utilization efficiency in EOR, which can reduce overall carbon footprint of oil production. The findings inform technology development for both carbon storage and utilization, aligning with global climate goals.
👥 読者別の含意
🔬研究者:Provides experimental data on a novel cosolvent for CO2 EOR, useful for CCUS process optimization.
🏢実務担当者:Oil and gas operators exploring chemical-enhanced CO2 injection could consider 3-pentanone as a cost-effective additive to improve recovery.
🏛政策担当者:Supports policy for CCUS technology innovation; demonstrates potential to enhance CO2 utilization in hard-to-abate sectors.
📄 Abstract（原文）
Carbon dioxide (CO2) emissions are the primary contributor to the global greenhouse effect, and achieving “Carbon Peak, Carbon Neutrality” goals has become a central issue in addressing climate change in both China and worldwide. Carbon capture, utilization, and storage (CCUS) is one of the most promising strategies for emission reduction, among which CO2-enhanced oil recovery (CO2-EOR) is widely regarded as a key technology. Building on previous studies of 3-pentanone-assisted CO2 processes, in this study we experimentally investigated the interaction of 3-pentanone with CO2 and its potential effects on oil recovery under tight reservoirs. The experimental results show that 3-pentanone has good solubility in supercritical CO2. The addition of 3-pentanone significantly reduces the interfacial tension (IFT) between CO2 and oil, improves the phase behavior of CO2/oil, and effectively lowers the minimum miscibility pressure (MMP). In huff ’n’ puff experiments, the total oil recovery after three cycles using CO2/3-pentanone reached 73.12%, which is 10.78% higher than that achieved with pure CO2. In flooding experiments, the CO2/3-pentanone/water alternating flooding achieved an oil recovery of 49.56%. Additionally, 3-pentanone reduced the rock contact angle from 111.83° to 68.24°, enhancing reservoir wettability. In this study, 3-pentanone is identified as a CO2-philic cosolvent that primarily regulates bulk-phase behavior of the CO2/oil system. Its contribution to EOR arises from improved CO2 solubility, reduced MMP, and enhanced oil swelling, with IFT reduction acting as a secondary effect. We do not consider the effects of connate water or dispersion in this study, nor do we investigate the microscopic interactions between 3-pentanone and CO2 molecules. These aspects will be further examined in future work.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.2118/233785-pafirst seen 2026-06-10 05:37:55
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