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天然气地球科学

• 天然气开发 • 上一篇    下一篇

纳米粒子增强泡排剂性能及影响因素研究

武俊文1，贾文峰2，雷群1，熊春明1，曹光强1，张建军1，李隽1，廖东3，胡志国4   

  1. 1.中国石油勘探开发研究院，北京 100083；2.中国石化石油工程技术研究院,北京 100101；
    3.中国石油集团川庆钻探工程有限公司地质勘探开发研究院，四川 成都 610051；
    4.西南油气田分公司重庆气矿，重庆 400021
  • 收稿日期:2016-06-03 修回日期:2016-09-10 出版日期:2017-08-10 发布日期:2017-08-10
  • 作者简介:武俊文(1985-)，女，山西左云人，工程师，博士，主要从事油田化学剂研究. E-mail:wujunwen@petrochina.com.cn.
  • 基金资助:

    中国石油股份公司科技管理部重大科技专项“深层油气勘探开发关键技术研究”课题“深层油气藏改造、堵水与举升技术”(编号：2014-32-07)资助.

Foam unloading agent stabilized by nanoparticles and the study of its affecting factors

Wu Jun-wen1，Jia Wen-feng2，Lei Qun1，Xiong Chun-ming1，Cao Guang-qiang1，Zhang Jian-jun1，Li Jun1，Liao Dong3，Hu Zhi-guo4   

  1. 1.PetroChina Research Institute of Petroleum Exploration & Development，Beijing 100083,China;
    2.SINOPEC Research Institute of Petroleum Ergineering,Beijing 100101,China;
    3.Geological Exploration and Development Research Institute,Chuanqing Drilling Engineering Co.Ltd.,Chengdu 610051,China;
    4.Chongqing Gasfield,PetroChina Southwest Oil and Gas Field Company,Chongqing 400021,China
  • Received:2016-06-03 Revised:2016-09-10 Online:2017-08-10 Published:2017-08-10

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摘要：

针对深层产水气井温度高(110～150℃)、矿化度高的特点，通过在普通液相泡排剂中引入合适尺寸、疏水程度的纳米粒子充当固态稳泡剂，使其吸附在气水界面形成稳定的空间壁垒，阻止气泡的聚并和歧化，从而极大地提高了普通液相泡排剂的起泡性与稳定性。为了给现场施工提供指导，利用高温高压泡沫评价仪实时评价研究了添加纳米粒子的泡排剂随浓度变化的性能，同时还考察了矿化度、温度、压力这3种外界因素对添加纳米粒子的泡排剂性能的影响。添加纳米粒子的泡排剂在矿化度为250 000mg/L下，其初始起泡体积V0和泡沫半衰期t1/2分别高达2 180mL和760s；在150℃高温下其初始起泡体积V0与泡沫半衰期t1/2分别高达1 925mL和700s；这些数据证明纳米粒子对泡排剂性能具有显著增强作用。该添加纳米粒子的泡排剂在重庆气矿现场应用效果良好。

关键词: 排水采气, 纳米粒子, 泡排剂, 气井

Abstract:

In this study the nanoparticles of suitable size and hydrophobic degree were introduced in the liquid as solid foam stabilizer to solve the problem of unloading of deep gas well with high gas temperature (110-150℃) and salinity.The nanoparticles can adsorb onto the gas/water interface to form a solid film which will prevent the coalescence and coarsening of bubbles,therefore the foaming ability and foam stabilizing ability of liquid foam unloading agent were greatly improved.In order to provide guidance for use in gas well,the foaming properties of different concentration of nanoparticles stabilized foam unloading agent was tested in real-time using high temperature and high pressure foam evaluation instrument.Meanwhile,the external factors such as salinity,temperature and pressure on the properties of nanoparticles stabilized foaming agent were also examined.The results show that its initial bubble volume V0 and half-life t1/2 reached as large as 2 160mL and 765s respectively under 250 000mg/L salinity.Besides,its initial bubble volume V0 and half-life t1/2 reached as high as 1 925mL and 700s at 150℃.These data proved that the nanoparticles have strong ability to stabilize the foams.The field application results show that the nanoparticles foam unloading agent performs well.

Key words: Unloading liquid in gas well, Nanoparticles, Foam unloading agent, Gas well

中图分类号: 

  • TE39

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