渤海高含水油田化学法提高采收率技术研究进展及发展方向

doi:10.3969/j.issn.2097-2806.2026.05.012

Abstract

Abstract:

As some offshore oil fields enter the medium to high water-cut stage, oil stabilization and water control have become one of the important means to enhance oil recovery. In this review, the development history, research progress, and field applications of chemical EOR technologies in Bohai oilfield were outlined. Addressing the reservoir geological characteristics of Bohai oilfield and the key challenges during waterflooding, those applicable chemical EOR technologies were summarized and primarily categorized into three systems: Profile control systems, profile control and flooding systems, and oil displacement systems. The operational mechanisms, research status, and practical achievements of each technology category were systematically introduced, and the existing technical limitations were also analyzed. Furthermore, the main challenges and future development directions for chemical EOR technologies in Bohai oilfield were prospected. Notably, the development of unconventional reservoirs featured by high temperature, high pressure, and low permeability was the major technical obstacle. Future research should prioritize the development of green and environmentally friendly, intelligent, low-cost, and multifunctional chemical materials. In terms of operational processes, the industry should advance toward large-scale implementation, online operations, and automated technologies.

Key words: high water-cut, oil stabilization and water control, Bohai oilfield, EOR

CLC Number:

TE341

Yufei Zheng, Xiang Qi, Xiang Li, Jinlong Liu, Qingbo Qin, Yongkang Jia, Xuan Feng. Research progress and development directions of enhanced oil recovery technologies for Bohai high water-cut oilfields[J].China Surfactant Detergent & Cosmetics, 2026, 56(5): 654-665.

Figures/Tables 17

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类型	有机铬凝胶	酚醛树脂凝胶	耐温凝胶	乳液聚合物在线凝胶
矛盾类型	层间、层内	层内、层间、平面	层内、层间、平面	层内、层间、平面
油藏温度 / ℃	60~80	50~90	90~140	60~140
矿化度 / （mg/L）	≤30 000	≤60 000	≤60 000	≤60 000
储层渗透率 /mD	≥500	≥500	≥500	≥200
水窜程度	强水窜	中强水窜	中强水窜	中强水窜

体系	纳米球	核壳球	超分子微球	水基微球	DMG
类型	油基	油基	油基	水基	水基
制备方法	反相微乳聚合	反相微乳聚合、接枝聚合	反相乳液聚合	水包水分散聚合	自由基聚合
粒径分布/nm	40~200	200~3 000	40~3 000	50~10 000	50~3×10⁶

类型	纳米球	核壳球	超分子微球	水基微球	DMG
矛盾类型	层内为主	层内为主	层内为主	层内为主	层内/层间
油藏温度/℃	≤110	≤110	≤110	≤130	≤150
矿化度/ （mg/L）	≤200 000	≤200 000	≤200 000	≤200 000	≤200 000
渗透率/mD	500~2 000	2 000~10 000	2 000~20 000	50~2 000	50~100 000
水窜速度/ （m/d）	<10	<20	<30	<20	<30

Research progress and development directions of enhanced oil recovery technologies for Bohai high water-cut oilfields

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