钻井液与完井液2017，Vol.34Issue(4)：65-68,4.DOI:10.3969/j.issn.1001-5620.2017.04.012
一种低温早强低密度水泥浆
Study and Application of Low Temperature Early Strength Low Density Cement Slurry
耿建卫1
作者信息
- 1. 大庆钻探工程公司钻井工程技术研究院,黑龙江大庆 163413
- 折叠
摘要
Abstract
The early strength of conventional low density cement slurries developed very slowly at low temperature, and the poor cementing ability of these slurries negatively affect the quality of well cementing. In shallow wells with frequent mud losses, this problem is quite common. To resolve this problem, studies have been conducted on low temperature early strength low density cement slurry. Based on the close packing theory and laboratory experimental study, low temperature early strength low density (1.30-1.50 g/cm3 ) cement slurries were developed. Ultra-fine gelled material and an early strength agent made by compounding lithium salts were used to improve the soundness and early strength of the low density set cement. The setting time of the low density cement slurry at 25 ℃ is 13 h, and the 24 h strength is 10.2 MPa. This low density cement slurry has high early strength at low temperatures, short setting time and good stability. It has been used on 2 wells in Daqing Oilfield with great success, and the well cementing jobs were 100% qualified.关键词
低温固井/超细胶凝材料/早强剂/低密度水泥浆Key words
Well cementing at low temperature/Ultra-fine gelled material/Early strength additive/Low density cement slurry分类
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耿建卫..一种低温早强低密度水泥浆[J].钻井液与完井液,2017,34(4):65-68,4.
