石油与天然气地质 ›› 2024, Vol. 45 ›› Issue (3): 600-608.doi: 10.11743/ogg20240302

• 院士论坛 • 上一篇    下一篇

提高油气田采收率技术协同方法与应用

孙焕泉1(), 杨勇2, 方吉超3, 凡哲元3, 吴光焕2, 元福卿2, 杨元亮2, 吴永超3   

  1. 1.中国石油化工集团有限公司, 北京 100728
    2.中国石化 胜利油田分公司, 山东 东营 257000
    3.中国石化 石油勘探开发研究院, 北京 102206
  • 收稿日期:2024-02-19 修回日期:2024-05-08 出版日期:2024-07-01 发布日期:2024-07-01
  • 第一作者简介:孙焕泉(1965—),男,博士、教授级高级工程师、中国工程院院士,油气田开发。E-mail: sunhquan@sinopec.com
  • 基金项目:
    国家自然科学基金项目(U20B6003)

Technological synergy for enhancing hydrocarbon recovery and its applications

Huanquan SUN1(), Yong YANG2, Jichao FANG3, Zheyuan FAN3, Guanghuan WU2, Fuqing YUAN2, Yuanliang YANG2, Yongchao WU3   

  1. 1.China Petrochemical Corporation,Beijing 100728,China
    2.Shengli Oilfield Branch Company,SINOPEC,Dongying,Shandong 257000,China
    3.Petroleum Exploration and Production Research Institute,SINOPEC,Beijing 102206,China
  • Received:2024-02-19 Revised:2024-05-08 Online:2024-07-01 Published:2024-07-01

摘要:

阐述了提高油气采收率技术协同方法的内涵,研究形成了“3+2”(三次采油和二次采油)协同大幅度提高高含水老油田采收率技术,提出了“3+2”提高采收率技术政策。建立了多元热复合技术协同大幅度提高稠油采收率方法,研究提出的提高油气田采收率技术协同方法在矿场应用,难开采稠油采收率提高了21.9 %。多元热复合开发与分支井技术协同应用成功将稠油黏度动用上限扩展到750 000 mPa·s,储层厚度动用下限突破到1.5 m。提出了下一步技术协同发展方向:低渗透油藏压驱-注水协同开发、缝洞型油藏气-水-井网协同提高采收率、老油田油藏-井筒-地面一体化开采以及页岩气复合排水采气。

关键词: 分支井, 多元热复合技术, “3+2”技术, 技术协同方法, 提高采收率

Abstract:

This study introduces the connotation of technological synergy for enhancing hydrocarbon recovery, and proposes the synergy of secondary recovery (water flooding) with tertiary recovery (CO2 flooding) (also referred to as the synergy of 3+2) to significantly improve the recovery of mature fields with high water cut, as well as corresponding measures taken to facilitate the technological synergy execution. What’s more, the synergy of thermal fluids with multiple displacing mediums is also established to substantially improve heavy oil recovery, and is applied in practice, showing a 21.9 % increase in the recovery for heavy oils that are typically difficult to extract. Furthermore, the synergy of multi-displacing-mediums compounded thermal flooding with multilateral wells is successfully applied to expand the upper limit of the viscosity for heavy oil recovery to 750,000 mPa·s and reduced the lower limit of the produced reservoir thickness to 1.5 m. Future research on the synergy alternatives for enhancing hydrocarbon recovery should focus on the synergy of hydraulic fracturing-assisted oil displacement with waterflooding for low-permeability reservoirs, the synergy of gas flooding, water flooding, and injection-production well pattern optimization for fractured-vuggy oil reservoirs, the synergy of injection-production ratio optimization, artificial lift and gathering system for mature oilfields, as well as combined drainage gas recovery for shale gas.

Key words: multilateral well, multi-medium compounded thermal flooding, 3+2 synergy, technological synergy, EOR

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