PEG对纳米硅水泥浆触变性改善的研究

魏浩光; 张鑫; 丁士东; 周仕明; 熊晓菲

doi:10.3969/j.issn.1001-5620.2018.04.015

PEG对纳米硅水泥浆触变性改善的研究

doi: 10.3969/j.issn.1001-5620.2018.04.015

魏浩光^1,2,
张鑫^2, ,,
丁士东^1,2,
周仕明¹,
熊晓菲²

1. 中国石化石油工程技术研究院, 北京 100101;
2. 中国石油大学(北京)石油工程学院, 北京 102249

基金项目:

国家重大专项“高压低渗气井水平井固井技术研究”（2016ZX05021005-002）

详细信息

作者简介:
魏浩光,高级工程师,1982年生,2011年毕业于中国石油大学(北京)获博士学位,现主要从事固井工艺与水泥浆体系研究。E-mail:weihaoguang@163.com。

通讯作者:
张鑫,E-mail:cup_zhangxin@163.com

中图分类号: TE256.6
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- 被引次数: 0
出版历程
- 收稿日期: 2018-03-14
- 刊出日期: 2018-07-30

Rheological Improvement of Nano-phase Silicon Cement Slurry with Polyglycol

1. Sinopec Research Institute of Petroleum Engineering, Beijing 100101;
2. School of Petroleum Engineering, China University of Petroleum, Beijing 102249

摘要

摘要: 为解决纳米硅水泥浆冷浆极强触变性的问题，测量了聚乙二醇PEG200、PEG400、PEG600加入纳米硅水泥浆，且加量分别为1%、2%和3%时的冷浆流变读数，通过对比静切力、塑性黏度和动切力优选出最优配量的PEG，对比了加入最优配量PEG前后，纳米硅水泥石性能的变化，并从反应机理方面分析了纳米硅乳液加入PEG前后的红外光谱图。结果显示，加量为2%的PEG200对纳米硅水泥浆触变性的改善效果最好，触变性改善效果提高5倍以上，加入2% PEG200前后的纳米硅水泥石性能基本一致；PEG与纳米二氧化硅的作用机理不仅有氢键作用，还有醚键配位作用，能够改善纳米二氧化硅防气窜水泥浆的触变性。研究结果表明，加量为2%的PEG200解决了纳米硅水泥浆冷浆极强触变性的问题，同时也保证了纳米硅水泥浆原有的性能。
- 纳米硅水泥浆 /
- 触变性 /
- 纳米硅乳液 /
- 聚乙二醇
Abstract: To resolve the very high thixotropy problem encountered in using nanometer silicon cement slurry, three cement slurries were treated with 1%, 2% and 3% of PEG200, PEG400 and PEG600, respectively, and their rheological properties were tested and measured. The optimum concentration of PEG was determined by comparison of gel strength, plastic viscosity and yield point of the three cement slurries. The properties of the set nanometer silicon cement slurries before and after treatment with the optimized concentration of PEG were compared, and the IR spectrogram of the nanometer silicon emulsion before and after treatment with PEG were analyzed from the point of view of reaction mechanism. It was found that the properties of the set nanometer silicon cement slurry remained unchanged before and after being treated with 2% PEG200, indicating that addition of 2% PEG200 is best for improving the thixotropy of nanometer silicon cement slurry, the efficiency of thixotropy improvement was increased by more than 5 times. It was also found that the mechanisms of the PEG-nanometer SiO₂ reaction include not only hydrogen bonding, but also ether bonding, both of which improve the thixotropy of the anti-channeling nanometer SiO₂ cement slurry. Treatment of nanometer silicon cement slurry with 2% PEG200 resolved the very high thixotropy problem associated with nanometer silicon cement slurry, and the original properties of the cement slurry can also be maintained.
- Nanometer silicon cement slurry /
- Thixotropy /
- Nanometer silicon emulsion /
- Polyglycol

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参考文献(10)

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