水泥浆触变性评价方法的探索

谢承斌; 卢海川; 李洋; 郑会锴; 邢秀萍; 尚光远; 孙晓杰

doi:10.3969/j.issn.1001-5620.2015.06.015

水泥浆触变性评价方法的探索

doi: 10.3969/j.issn.1001-5620.2015.06.015

天津中油渤星工程科技有限公司, 天津

基金项目: 国家科技重大专项"复杂地质条件下深井钻井液与高温高压固井技术研究"(2011ZX05021-004)。

详细信息

作者简介:
谢承斌,高级工程师,现在主要从事水泥浆体系和复杂固井技术的研究工作。地址:天津市塘沽区津塘公路40号;邮政编码300451;电话(022)66310325;E-mail:xiecb@cnpc.com.cn。

中图分类号: TE256.6
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出版历程
- 收稿日期: 2015-07-09
- 刊出日期: 2015-11-30

Study on Evaluation of Thixotropy of Cement Slurry

No. 40, Jintang highway, Tanggu District, Tianjin 300451, China

摘要

摘要: 通过实验分析了目前常用的触变性评价方法——静切力法和滞后环法,对其合理性进行了讨论;并结合触变水泥浆的现场应用,提出了水泥浆触变性评价应涵盖流动性、胶凝强度发展情况以及施工安全性3个方面,针对常用触变性评价方法存在的问题,探索了一种评价水泥浆触变性的新方法。该方法采用精度高的旋转黏度计在转速极低的情况下测量水泥浆不同时刻的剪切力,几乎消除了剪切力对胶凝强度的影响,通过程序控制可实现对样品的连续测量。此方法可准确反映不同温度下水泥浆胶凝强度发展的快慢和大小,从而可更好地指导触变水泥浆体系的开发和现场应用。
- 触变水泥浆 /
- 触变性 /
- 静切力法 /
- 滞后环法 /
- 评价
Abstract: Gel strength method and hysteresis loop method are commonly used in the evaluation of thixotropy of cement slurry.These two methods have recently been studied.Taking field application of thixotropic cement slurries into consideration, it was suggested that the evaluation should cover mobility and progress of gel strength of cement slurry, and operation safety.Based on the study, a new evaluation method was developed, employing a high accuracy rotational viscometer to measure the shear strengths of cement slurry at different times in very low shear rates.The influence of shear force on gel strength is almost eliminated.Continual measurement can be realized through program control.Using this method, the change of gel strengths of cement slurry with temperature can be studied, thus helping develop better cement slurry formulation for field application.
- Thixotropic cement slurry /
- Thixotropy /
- Gel strength method /
- Hysteresis loop method /
- Evaluation

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参考文献(11)

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