西南石油大学学报(自然科学版)

• 石油与天然气工程 • 上一篇    下一篇

渗透率及含油饱和度对泡沫性能的影响研究

刘露1 *,李华斌2,3,黄浩4,郭程飞2,吴灿2   

  1. 1. 中国石化西南油气分公司川西采气厂,四川德阳618000
    2. 成都理工大学能源学院,四川成都610059
    3.“油气藏地质及开发工程”国家重点实验室· 成都理工大学,四川成都610059
    4. 中国石化重庆涪陵页岩气勘探开发有限公司,重庆涪陵408000
  • 出版日期:2015-12-01 发布日期:2015-12-01
  • 通讯作者: 刘露,E-mail:110415lu@163.com

Influence of Permeability and Oil Saturation on the Foaming Ability

Liu Lu1*, Li Huabin2,3, Huang Hao4, Guo Chengfei2, Wu Can2   

  1. 1. West Sichuan Gas Production Plant,SINOPEC Southwest Oil & Gas Company,Deyang,Sichuan 618000,China
    2. College of Energy Sources,Chengdu University of Technology,Chengdu,Sichuan 610059,China
    3. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Chengdu University of Technology,Chengdu,Sichuan 610059,China
    4. Chongqing Fuling Shale Gas Exploration and Development,Co. Ltd.,SINOPEC,Fuling,Chongqing 408000,China
  • Online:2015-12-01 Published:2015-12-01

摘要:

针对油层渗透率和含油饱和度的不同使同种泡沫体系的起泡能力和封堵能力有较大差异,开展了不同渗透率
和含油饱和度条件下泡沫体系的起泡能力和封堵能力研究。研究依靠室内驱替实验测定压力表读数,计算不同渗透
率和含油饱和度条件下的阻力系数。结果表明:随着渗透率的增加泡沫起泡能力增加、封堵能力变好,当渗透率大于
463 mD 后,渗透率对起泡能力和封堵能力的影响变小;同时随着运移位置的增加阻力系数降低,泡沫体系起泡能力小
于消泡能力,封堵能力变差;而随着含油饱和度的增加泡沫起泡能力和封堵能力逐渐降低,但在不同含油饱和度条件
下降低幅度不同,可以分为3 个阶段:缓慢下降、急剧下降和平衡阶段,在含油饱和度低于33% 情况下,阻力系数高于
23,此时起泡能力强、封堵性能好。为下阶段研究泡沫驱在油田的开展奠定了理论基础。

关键词: 泡沫驱, 驱替实验, 渗透率, 含油饱和度, 起泡能力, 封堵能力

Abstract:

The difference of reservoir permeability and oil saturation makes foaming ability and sealing ability of the same foam
system different. We studied the foaming and sealing ability under the condition of different permeability and oil saturation.
With indoor displacement experiment to measure the piezometer reading,we calculated resistance coefficient of different permeability
and oil saturation. Results show that foamability and sealing ability increase with the increase of permeability.when
the permeability is more than 463 mD,permeability cannot affect the foaming ability and sealing ability. On the other hand,the
resistance coefficient and sealing ability decrease with the increase of the distance,and foaming ability is less than the defoaming
ability. Foaming ability and sealing ability gradually reduce with the increase of oil saturation,which can be divided into
three stages under different oil saturation:slow decline stage,sharp decline stage,and balance stage. Resistance coefficient
is more than 23 when oil saturation is lower than 33%,and the foaming and sealing ability is good. This research has laid a
theoretical basis for the foam flooding in oilfield development .

Key words: foam flooding, core flooding experiment, permeability, oil saturation, foaming ability, sealing ability

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