岩性油气藏 ›› 2017, Vol. 29 ›› Issue (3): 140–146.doi: 10.3969/j.issn.1673-8926.2017.03.017

• 油气田开发 • 上一篇    下一篇

油藏CO2驱油提高采收率适宜性评价

杨红1, 王宏1, 南宇峰2, 屈亚宁3, 梁凯强1, 江绍静1   

  1. 1. 陕西延长石油(集团)有限责任公司研究院, 西安 710075;
    2. 中国石油北京油气调控中心, 北京 100007;
    3. 延长石油股份有限公司 定边采油厂, 陕西 榆林 719000
  • 收稿日期:2016-12-06 修回日期:2017-02-15 出版日期:2017-05-21 发布日期:2017-05-21
  • 通讯作者: 王宏(1982-),男,硕士,工程师,主要从事开发地质与油藏精细描述、数值模拟、提高采收率技术研究。Email:raskay@163.com。 E-mail:raskay@163.com
  • 作者简介:杨红(1986-),男,硕士,工程师,主要从事提高采收率方面的研究工作。地址:(710075)陕西省西安市科技二路75号延长石油研究院。Email:yh_cup2011@sina.com
  • 基金资助:
    国家科技支撑计划课题“CO2埋存与提高采收率技术”（编号：2012BAC26B03）、陕西省科技统筹创新工程计划项目“陕北致密砂岩油藏CO2驱提高采收率关键技术研究及先导试验”（编号：2014KTZB03-02）联合资助

Suitability evaluation of enhanced oil recovery by CO2 flooding

YANG Hong1, WANG Hong1, NAN Yufeng2, QU Yaning3, LIANG Kaiqiang1, JIANG Shaojing1   

  1. 1. Research Institute of Shaanxi Yanchang Petroleum(Group) Co., Ltd., Xi'an 710075, China;
    2. PetroChina Oil and Gas Control Center in Beijing, Beijing 100007, China;
    3. Dingbian Oil Production Plant, Yanchang Oilfield Co., Ltd., Yulin 719000, Shaanxi, China
  • Received:2016-12-06 Revised:2017-02-15 Online:2017-05-21 Published:2017-05-21

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摘要： 为了解决目前对油藏开展CO2驱油提高采收率影响因素的筛选及适宜性评价尚局限于定性或半定量分析的问题，通过引入灰色关联分析方法，对国内外7个已先后开展CO2驱油的油藏进行CO2驱油提高采收率影响因素关联度、权重系数计算，定量分析CO2驱油提高采收率过程中各影响因素的强弱；同时，对已开展CO2驱油的油藏进行CO2驱油适宜度计算，评价油藏开展CO2驱油的适宜性；并利用该方法对定边-吴起油田开展CO2驱油适宜性进行评价。结果表明：CO2驱油提高采收率影响因素由强到弱的顺序依次为压力比、地层有效厚度、地层埋深、地层原油黏度、地面原油密度、剩余油饱和度、油藏温度、孔隙度、渗透率；定边-吴起油田开展CO2驱油油藏以Ⅰ类和Ⅱ类油藏为主，说明评价区域开展CO2驱油的适宜性较强。

关键词: 储层精细分类, 流动带指数, 喉道半径, 东非裂谷, Albert盆地

Abstract: In order to solve the problems that the influencing factor selection and suitability evaluation of enhanced oil recovery (EOR)by CO2 flooding are limited to qualitative or semi quantitative analysis, grey correlation analysis method was introduced to calculate the association degree and weight coefficient of the EOR influencing factors by CO2 flooding in seven CO2 flooding reservoirs, and the EOR influencing factors by CO2 flooding were quantitatively analyzed. Meantime, the suitability of CO2 flooding in reservoir was evaluated, and this method were used to evaluate CO2 flooding potential in Dingbian-Wuqi oilfield. The results show the order of EOR influence factors from strong to weak:ratio of MMP to original reservoir pressure, formation effective thickness, buried depth, crude oil viscosity underground,ground crude oil density, remaining oil saturation, reservoir temperature, porosity and permeability. The CO2 flooding is mainly for type Ⅰ and Ⅱ reservoirs in Dingbian-Wuqi oilfield, which means that it is suitable for CO2 flooding in the oilfield.

Key words: reservoir classification, flow zone indicator, pore throat radius, East African Rift, Albert Basin

中图分类号: 

  • TE34
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