Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Cement reinforcing agent suitable for deepwater low-temperature environment, preparation method thereof and cement paste system
The invention discloses a cement reinforcing agent suitable for a deepwater low-temperature environment, a preparation method of the cement reinforcing agent and a cement paste system, the cement reinforcing agent is aluminum-doped hydrated calcium silicate, and the molar ratio of aluminum to silicon to calcium in the aluminum-doped hydrated calcium silicate is as follows: the molar ratio of Ca to Si is 1.5-2.0, and the molar ratio of Al to Si is 0.08-0.15. The early strength of the set cement under the deepwater low-temperature condition can be improved, and the problems that the strength development of the set cement in the low-temperature environment is slow, and construction safety is affected are solved. By adding Al ions for improving the structure of the C-S-H seed crystal, the early strength performance of the C-S-H seed crystal is greatly improved. The cement reinforcing agent has a good effect of improving the low-temperature mechanical compressive strength of the oil well cement stone, is suitable for a deepwater low-temperature environment, can effectively improve the early compressive strength of oil well cement, and guarantees the safety of operation construction.
本发明公开了一种适用深水低温环境的水泥增强剂及其制备方法、水泥浆体系，所述水泥增强剂为铝掺杂水化硅酸钙，且所述铝掺杂水化硅酸钙中铝、硅、钙各元素的摩尔比为：Ca/Si摩尔比1.5‑2.0，Al/Si摩尔比0.08‑0.15。本发明能够提高深水低温条件下水泥石的早期强度，解决低温环境水泥石的强度发展缓慢，影响施工安全的问题。本发明通过加入改善C‑S‑H晶种结构的Al离子，极大的提高了C‑S‑H晶种的早强性能。本发明具有良好的提高油井水泥石低温力学抗压强度的效果，适用于深水低温环境，能够有效提升油井水泥早期抗压强度，保障作业施工的安全。
Cement reinforcing agent suitable for deepwater low-temperature environment, preparation method thereof and cement paste system
The invention discloses a cement reinforcing agent suitable for a deepwater low-temperature environment, a preparation method of the cement reinforcing agent and a cement paste system, the cement reinforcing agent is aluminum-doped hydrated calcium silicate, and the molar ratio of aluminum to silicon to calcium in the aluminum-doped hydrated calcium silicate is as follows: the molar ratio of Ca to Si is 1.5-2.0, and the molar ratio of Al to Si is 0.08-0.15. The early strength of the set cement under the deepwater low-temperature condition can be improved, and the problems that the strength development of the set cement in the low-temperature environment is slow, and construction safety is affected are solved. By adding Al ions for improving the structure of the C-S-H seed crystal, the early strength performance of the C-S-H seed crystal is greatly improved. The cement reinforcing agent has a good effect of improving the low-temperature mechanical compressive strength of the oil well cement stone, is suitable for a deepwater low-temperature environment, can effectively improve the early compressive strength of oil well cement, and guarantees the safety of operation construction.
本发明公开了一种适用深水低温环境的水泥增强剂及其制备方法、水泥浆体系，所述水泥增强剂为铝掺杂水化硅酸钙，且所述铝掺杂水化硅酸钙中铝、硅、钙各元素的摩尔比为：Ca/Si摩尔比1.5‑2.0，Al/Si摩尔比0.08‑0.15。本发明能够提高深水低温条件下水泥石的早期强度，解决低温环境水泥石的强度发展缓慢，影响施工安全的问题。本发明通过加入改善C‑S‑H晶种结构的Al离子，极大的提高了C‑S‑H晶种的早强性能。本发明具有良好的提高油井水泥石低温力学抗压强度的效果，适用于深水低温环境，能够有效提升油井水泥早期抗压强度，保障作业施工的安全。
Cement reinforcing agent suitable for deepwater low-temperature environment, preparation method thereof and cement paste system
适用深水低温环境的水泥增强剂及其制备方法、水泥浆体系
LIU SHUJIE (Autor:in) / HUANG YI (Autor:in) / LIU HEXING (Autor:in) / WANG CHENGLONG (Autor:in) / PENG ZHIGANG (Autor:in) / ZHENG YONG (Autor:in) / MAO YUHANG (Autor:in)
30.07.2021
Patent
Elektronische Ressource
Chinesisch
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