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A platform for research: civil engineering, architecture and urbanism
CCUS well cementation cement paste and preparation method thereof
The invention belongs to the technical field of well cementation, and particularly relates to CCUS well cementation cement paste and a preparation method thereof. The CCUS well cementation cement paste provided by the invention comprises a solid mixture, a liquid additive and water, and the solid mixture comprises Portland cement, an auxiliary cementing material, a mineral admixture, a micron-sized sheet and Na2CO3. According to the CCUS well cementation cement paste, based on the design thought of particle relay preparation, solid phase volume fraction increase, cement stone compactness increase and cement stone permeability reduction, the corrosion resistance of a cement sheath is improved in the CCUS underground environment with saturated CO2 and supercritical CO2.
本发明属于固井技术领域，具体涉及一种CCUS井固井水泥浆及其制备方法。本发明提供的CCUS井固井水泥浆，包括固体混合料、液体外加剂和水，所述固体混合料包括：硅酸盐水泥、辅助胶凝材料、矿物掺合料、微米级片材和Na2CO3。本发明的CCUS井固井水泥浆，基于颗粒继配、增加固相体积分数、增加水泥石密实性及降低水泥石渗透性的设计思路，在饱和CO2和超临界CO2的CCUS井下环境，提高水泥环抗腐蚀能力。
CCUS well cementation cement paste and preparation method thereof
The invention belongs to the technical field of well cementation, and particularly relates to CCUS well cementation cement paste and a preparation method thereof. The CCUS well cementation cement paste provided by the invention comprises a solid mixture, a liquid additive and water, and the solid mixture comprises Portland cement, an auxiliary cementing material, a mineral admixture, a micron-sized sheet and Na2CO3. According to the CCUS well cementation cement paste, based on the design thought of particle relay preparation, solid phase volume fraction increase, cement stone compactness increase and cement stone permeability reduction, the corrosion resistance of a cement sheath is improved in the CCUS underground environment with saturated CO2 and supercritical CO2.
本发明属于固井技术领域，具体涉及一种CCUS井固井水泥浆及其制备方法。本发明提供的CCUS井固井水泥浆，包括固体混合料、液体外加剂和水，所述固体混合料包括：硅酸盐水泥、辅助胶凝材料、矿物掺合料、微米级片材和Na2CO3。本发明的CCUS井固井水泥浆，基于颗粒继配、增加固相体积分数、增加水泥石密实性及降低水泥石渗透性的设计思路，在饱和CO2和超临界CO2的CCUS井下环境，提高水泥环抗腐蚀能力。
CCUS well cementation cement paste and preparation method thereof
CCUS井固井水泥浆及其制备方法
RAO ZHIHUA (author) / ZHANG WEIGUO (author) / FU JUNFANG (author) / DENG CHENGHUI (author) / PENG YUNFAN (author) / JIN YONG (author) / WANG QIANG (author) / ZUO KUN (author) / YANG WEI (author) / YAN XUFENG (author)
2024-08-16
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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