纳米封堵效果评价方法研究
Effectiveness Analysis of Nano-Particle Plugging Evaluation Method
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- 引用格式:
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刘振东,李卉,周守菊,黄维安.纳米封堵效果评价方法研究[J].天然气与石油,2019,37(2):60-64.doi:10.3969/j.issn.1006-5539.2019.02.010
Liu Zhendong,Li Hui,Zhou Shouju,Huang Weian.Effectiveness Analysis of Nano-Particle Plugging Evaluation Method[J].Natural Gas and Oil,2019,37(2):60-64.doi:10.3969/j.issn.1006-5539.2019.02.010
- DOI:
- 10.3969/j.issn.1006-5539.2019.02.010
- 作者:
- 刘振东1 李卉1 周守菊1 黄维安2
Liu Zhendong1，Li Hui1，Zhou Shouju1，Huang Weian2
- 作者单位:
- 1. 中石化胜利石油工程有限公司钻井工艺研究院,2. 中国石油大学(华东石油工程学院)
1.Drilling Technology Research Institute of Sinopec Shengli Petroleum Engineering Co., Ltd. ; 2.China University of Petroleum (Huadong)
- 关键词:
- 纳米颗粒;封堵性评价;高温高压渗透性失水;压力传递实验
Nano-particle; Plugging evaluation; Experiment of high temperature and high pressure permeability loss; Experiment of pressure transfer
- 摘要:
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在含有大量微纳米孔隙的页岩地层钻井过程中,如何有效阻止钻井液或者滤液通过这些微纳米孔隙进入地层,防止页岩水化分散,成为安全快速钻井的关键技术难题。目前,采用纳米级封堵剂是防止井壁失稳的一种有效方法,因此有必要对纳米级封堵剂封堵效果评价方法进行分析探讨,为纳米级封堵剂的优选提供依据。在对五种评价实验方法分析研究的基础上,得出高压渗透性失水评价实验和压力传递实验更能真实反映封堵效果,建议在此基础上进一步完善形成纳米级封堵剂封堵效果评价方法。这对钻井液用纳米封堵剂的选择以及钻井液配方的井壁稳定效果评价都具有积极意义。
During drilling shale formation with a large number of micro-nano pores, effectively preventing drilling fluid or filtrate from entering the formation through these micro-nano pores and preventing shale hydration and dispersion is a key technical challenge to prevent wellbore instability, as well as reach safe and rapid drilling.At present, a lot of researches have been done for the evaluation method of nano-particle plugging. But there is no unified standard at present. The extent of reflection on the real plugging effect of nanoparticles in the process of use is also needed to be understood. In this paper we analyze several main sealing evaluation methods, evaluate their effectiveness, and give some suggestions in the conclusion. At present, it is better to reflect the blocking effect by the experiment of high temperature and high pressure permeability loss and experiment of pressure transfer,and it is suggested to further improve the evaluation method of plugging effect of nano plugging agent,which is of great significance for the selection of nano-particle plugging agent for drilling fluid and the evaluation of wellbore stability.
