-18℃下冻土区负温水泥浆水化微观过程研究

刘浩亚; 鲍洪志; 赵卫

doi:10.3969/j.issn.1001-5620.2019.01.015

-18℃下冻土区负温水泥浆水化微观过程研究

doi: 10.3969/j.issn.1001-5620.2019.01.015

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), 北京 102249;
3. 中联煤层气有限责任公司, 北京 100015

基金项目:

国家重点研发计划项目“极地冷海钻井关键技术研究”（2016YFSF010327）

详细信息

作者简介:
刘浩亚,助理研究员,博士,1985年生,毕业于圣彼得堡矿业大学,现从事油气井井筒工作液方面的研究工作;E-mail:liuhy.sripe@sinopec.com

中图分类号: TE256.6
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出版历程
- 收稿日期: 2018-12-05
- 刊出日期: 2019-02-28

Study on Microscopic Hydration Process of a Cold Temperature Cement Slurry Used in Frozen Areas at -18 ℃

1. Sinopec Research Institute of Petroleum Engineering, Beijing 100101;
2. China University of Petroleum, Beijing 102249;
3. Research Center of the China United Coalbed Methane Corporation Ltd., Beijing 100015

摘要

摘要: 极地冷海地区具有重要的油气勘探开发价值，但常规固井水泥浆液相水分在该地区负温环境下会分凝结冰，水化反应无法进行，导致固井工作难以开展。为此，针对极地冷海冻土区负温环境下固井水泥浆不凝固难题开发了一种负温水泥浆体系，并对比研究了其在-18℃和室温环境下水化反应微观产物的区别。实验结果表明：该体系具有优良的负温固化性能，在-18℃下0.5~3 h内固化，24 h抗压强度达3.5~9 MPa，可有效解决负温条件下常规水泥浆不固化无强度难题；微观成分测试发现，-18℃下冻土区负温水泥浆的水化程度较室温下低，但水化产物中Aft含量较室温下高，这对水泥石的机械性能起到了积极作用。
- 负温水泥 /
- 冻土区 /
- 固井 /
- 微观结构 /
- 凝结时间 /
- 抗压强度
Abstract: The cold sea area in polar region of the earth possess huge reserves of oil and gas, cementing of the wells developing these oil and gas is not able to be completed using conventional cement slurries because the water in the cement slurry gets frozen in cold temperatures in polar region, and the hydration of cement is unable to proceed. A cement slurry has recently been developed for use in this cold area, and the products of hydration at -18 ℃ and at room temperature were compared microscopically. Laboratory experimental results showed that the cement slurry developed has excellent setting performance at cold temperatures; at -18 ℃, the cement slurry sets in 0.5-3 h, and the 24 h compressive strength falls between 3.5 and 9 MPa, indicating that the cement slurry can be used to resolve the problems conventional cement slurries have to face with: being unable to set and having no strength at cold temperatures. Microscopic test of the cement slurry shoed that the hydration degree of the cement slurry at -18 ℃ is lower than that of the cement slurry at room temperature, while the Aft content of the cement slurry at -18 ℃ is higher than that of the cement slurry at room temperature, a phenomenon that is positive to the mechanical properties of the set cement.
- Cold temperature cement /
- Frozen area /
- Well cementing /
- Microscopic structure /
- Setting time /
- Compressive strength

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参考文献(12)

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-18℃下冻土区负温水泥浆水化微观过程研究

doi: 10.3969/j.issn.1001-5620.2019.01.015

作者简介:
刘浩亚,助理研究员,博士,1985年生,毕业于圣彼得堡矿业大学,现从事油气井井筒工作液方面的研究工作;E-mail:liuhy.sripe@sinopec.com

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Study on Microscopic Hydration Process of a Cold Temperature Cement Slurry Used in Frozen Areas at -18 ℃

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留言板

-18℃下冻土区负温水泥浆水化微观过程研究

doi: 10.3969/j.issn.1001-5620.2019.01.015

作者简介: 刘浩亚,助理研究员,博士,1985年生,毕业于圣彼得堡矿业大学,现从事油气井井筒工作液方面的研究工作;E-mail:liuhy.sripe@sinopec.com

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出版历程

Study on Microscopic Hydration Process of a Cold Temperature Cement Slurry Used in Frozen Areas at -18 ℃

计量

出版历程

目录

作者简介:
刘浩亚,助理研究员,博士,1985年生,毕业于圣彼得堡矿业大学,现从事油气井井筒工作液方面的研究工作;E-mail:liuhy.sripe@sinopec.com