Scholarlink

<p>This study challenges the conventional assumption that profile control inherently enhances oil recovery, demonstrating its dependency on post-treatment pressure elevation. Through numerical simulations of four operational scenarios, results show that profile control without pressure elevation reduces water injection volume and oil production, while integrated pressure-conformance strategies increase oil recovery by 65% with optimized water utilization efficiency. A mechanistic model reveals that merely sealing high-permeability zones fails to mobilize oil in low-permeability layers unless injection pressure is elevated to reconfigure displacement gradients. Field-scale simulations of polymer gel treatments demonstrate that elevating pressure to 20 MPa post-plugging diverts 37.5% of injected water into under-swept regions, expanding sweep efficiency by 32.7%. The core mechanism lies in pressure field reconfiguration, where a 4.8 MPa pressure differential activates low-permeability zones, reducing per-unit oil cost by 18%. This research provides a paradigm shift from passive water control to active pressure-conformance synergy, offering scientifically grounded strategies for high water-cut 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

Enhanced Oil Recovery Through Control Technology Pressure Management and Water Control

  • 期刊论文

  • 发表日期：

    2025年5月1日

查看全文
  • Jianxin Luo,
  • Gongqing Yang,
  • Jun Chen

摘要

This study challenges the conventional assumption that profile control inherently enhances oil recovery, demonstrating its dependency on post-treatment pressure elevation. Through numerical simulations of four operational scenarios, results show that profile control without pressure elevation reduces water injection volume and oil production, while integrated pressure-conformance strategies increase oil recovery by 65% with optimized water utilization efficiency. A mechanistic model reveals that merely sealing high-permeability zones fails to mobilize oil in low-permeability layers unless injection pressure is elevated to reconfigure displacement gradients. Field-scale simulations of polymer gel treatments demonstrate that elevating pressure to 20 MPa post-plugging diverts 37.5% of injected water into under-swept regions, expanding sweep efficiency by 32.7%. The core mechanism lies in pressure field reconfiguration, where a 4.8 MPa pressure differential activates low-permeability zones, reducing per-unit oil cost by 18%. This research provides a paradigm shift from passive water control to active pressure-conformance synergy, offering scientifically grounded strategies for high water-cut reservoirs.