西南石油大学学报（自然科学版）2011，Vol.33Issue(5)：152-156,5.DOI:10.3863/j.issn.1674-5086.2011.05.028
镁氧水泥用于油井堵漏及暂闭的室内研究
李早元 1靳东旭 1周超 1葛红江 2郭小阳1
作者信息
- 1. “油气藏地质及开发工程”国家重点实验室·西南石油大学,四川成都610500
- 2. 中国石油大港油田采油工艺研究院,天津大港300280
- 折叠
摘要
Abstract
Magnesia cement applied to downhole has some advantages of decrease waiting on cement to set, completely acid-soluble, easy flow to a narrow annular space and low thermal conductivity. This paper uses physical phase analysis, scanning electron microscope and other means to study the magnesia cement's thermal stability and acid dissolution characteristics in the water bath simulation down hole conditions. We also analyze and discuss the mechanism of magnesium oxychloride cement strength decline in the hydrothermal environment. Experiments show that magnesium oxychloride cement in hydrothermal environments 5-1-8-phase undergoes phase transition which results in the rapid attenuation of intensity. However, sulfur oxygen magnesium cement overcomes the poor stability of magnesium oxychloride cement in hydrothermal environments, and has excellent acid-soluble properties after adding 5%calcium carbonate. It provide a new temporary closure sealing technology for the pay formation in blocking or temporarily closing.关键词
镁氧水泥/强度/暂闭/封堵/酸溶特性Key words
magnesia cement/ intensity/ temporary blocking/ sealing/ acid soluble properties分类
能源科技引用本文复制引用
李早元,靳东旭,周超,葛红江,郭小阳..镁氧水泥用于油井堵漏及暂闭的室内研究[J].西南石油大学学报（自然科学版）,2011,33(5):152-156,5.
