油气藏评价与开发 ›› 2020, Vol. 10 ›› Issue (3): 51-59.doi: 10.13809/j.cnki.cn32-1825/te.2020.03.008

• 矿场应用 • 上一篇    下一篇

胜利油田CO2驱油技术现状及下步研究方向

曹绪龙,吕广忠,王杰,张东,任敏   

  1. 中国石化胜利油田分公司,山东 东营 257000
  • 收稿日期:2020-01-20 出版日期:2020-06-26 发布日期:2020-07-03
  • 作者简介:曹绪龙(1964—),男,博士,教授级高级工程师,本刊编委,主要从事油田提高采收率技术研究。通讯地址:山东省东营市东营区聊城路2号勘探开发研究院,邮政编码:257000。E-mail:caoxulong.slyt@sinopec.com
  • 基金资助:
    “十二五”国家科技支撑计划项目“CO2驱油油藏工程及注采工艺关键技术研究”(2012BAC24B03);中国石化重大示范工程项目“低丰度特低渗滩坝砂油藏CO2驱技术研究与示范”(P18088-2)

Present situation and further research direction of CO2 flooding technology in Shengli Oilfield

CAO Xulong,LYU Guangzhong,WANG Jie,ZHANG Dong,REN Min   

  1. Sinopec Shengli Oilfield Company, Dongying, Shandong 257000, China
  • Received:2020-01-20 Online:2020-06-26 Published:2020-07-03

摘要:

CO2驱是提高低渗透油藏采收率和减少温室气体排放双赢的主要技术。针对胜利油田低渗透油藏CO2驱面临的混相难、易气窜、波及系数低等技术难题,采用物理模拟和数值模拟相结合的方法,明确了超前注CO2混相驱的开发机理,形成了特低渗透油藏的超前注CO2混相驱开发技术,现场应用后增产效果明显,单井日产油增加了5倍。提出降低混相压力的原理和技术思路,研发了降低混相压力体系,降幅可达22 %。分析胜利油田CO2驱规模应用面临的挑战及对策,提出了深化CO2驱提高石油采收率的相态理论、研发低成本扩大CO2驱波及体积技术、发展CO2非完全混相驱、气窜通道描述与预警等CO2驱的发展方向,为油田实现CO2驱规模应用提供技术支撑。

关键词: 超前注气, 特低渗透, 降低混相压力, CO2混相驱, 研究方向

Abstract:

CO2 flooding is effective for enhancing the oil recovery in low permeability reservoir and reducing the greenhouse gas emissions. In order to solve the technical problems of difficult miscible phase, easy gas channelling and low sweep coefficient for CO2 flooding in low permeability reservoir in Shengli Oilfield. By the combination of physical and numerical simulation, the development mechanism of the CO2 injection miscible flooding long in advance is clarified, and the comprehensive techniques for extra low permeability reservoir is formed. After field application, the stimulation effect is obvious, the daily production of oil per well increase by 5 times. The principle and technical idea of reducing the miscibility pressure are put forward, and the system of reducing the miscible pressure system is developed, which can make the pressure decrease by up to 22 %. The challenge and countermeasure faced by scale application of CO2 flooding in Shengli Oilfield are analyzed, and the development directions of CO2 flooding are proposed, such as deepening the phase state theory of oil recovery enhanced by CO2 flooding, developing CO2 flooding technology with expanded sweep volume at low cost, developing incomplete CO2 miscible flooding, and description and early warning of gas channeling. All these provide technical support for oil field to realize scale application of CO2 flooding.

Key words: advanced gas injection, ultra-low permeability reservoir, reduce miscibility pressure, CO2 miscible flooding, development direction

中图分类号: 

  • TE357.42