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A platform for research: civil engineering, architecture and urbanism
In-situ tough well cementation cement, well cementation cement slurry and preparation method of well cementation cement slurry
The invention provides in-situ ductile well cementation cement and well cementation cement slurry and a preparation method thereof, the in-situ ductile well cementation cement comprises cement clinker and gypsum, the cement clinker comprises the following minerals by mass: 46-60% of tricalcium silicate, 20-30% of calcium silicate, 20-30% of calcium silicate, and 20-30% of gypsum; 20 to 30% of dicalcium silicate; 1 to 2.5% of tricalcium aluminate; and 17-23% of tetra calcium aluminoferrite. According to the in-situ tough well cementation cement provided by the invention, the content of tetracalcium aluminoferrite is increased by changing the composition of the mineral content of oil well cement, the tetracalcium aluminoferrite additionally added in the high-tetracalcium aluminoferrite cement can play a role of a nucleating agent, and the hydration reaction of the cement is accelerated. After tetra calcium aluminoferrite is additionally added to a cement matrix, original partial pores are filled with tetra calcium aluminoferrite particles, so that the pore structure of the high-tetra calcium aluminoferrite cement is optimized, the mechanical property of the cement matrix under the stress effect is further improved, and the toughness of set cement is enhanced.
本发明提供了一种原位韧性固井水泥和固井水泥浆及其制备方法，原位韧性固井水泥包括水泥熟料和石膏，所述水泥熟料包括以下质量百分比的矿物：硅酸三钙46‑60%；硅酸二钙20‑30％；铝酸三钙1‑2.5%；铁铝酸四钙17‑23％。本发明提供的这种原位韧性固井水泥，通过改变油井水泥矿物含量的组成，增大铁铝酸四钙的含量，高含铁铝酸四钙水泥额外增加的铁铝酸四钙可以发挥形核剂的作用，加速水泥的水化反应。当水泥基体额外增加铁铝酸四钙后，原本的部分孔隙被铁铝酸四钙颗粒所填充，使得高含铁铝酸四钙水泥的孔隙结构得到优化，进而提升水泥基体在应力作用下的力学性能，增强了水泥石的韧性。
In-situ tough well cementation cement, well cementation cement slurry and preparation method of well cementation cement slurry
The invention provides in-situ ductile well cementation cement and well cementation cement slurry and a preparation method thereof, the in-situ ductile well cementation cement comprises cement clinker and gypsum, the cement clinker comprises the following minerals by mass: 46-60% of tricalcium silicate, 20-30% of calcium silicate, 20-30% of calcium silicate, and 20-30% of gypsum; 20 to 30% of dicalcium silicate; 1 to 2.5% of tricalcium aluminate; and 17-23% of tetra calcium aluminoferrite. According to the in-situ tough well cementation cement provided by the invention, the content of tetracalcium aluminoferrite is increased by changing the composition of the mineral content of oil well cement, the tetracalcium aluminoferrite additionally added in the high-tetracalcium aluminoferrite cement can play a role of a nucleating agent, and the hydration reaction of the cement is accelerated. After tetra calcium aluminoferrite is additionally added to a cement matrix, original partial pores are filled with tetra calcium aluminoferrite particles, so that the pore structure of the high-tetra calcium aluminoferrite cement is optimized, the mechanical property of the cement matrix under the stress effect is further improved, and the toughness of set cement is enhanced.
本发明提供了一种原位韧性固井水泥和固井水泥浆及其制备方法，原位韧性固井水泥包括水泥熟料和石膏，所述水泥熟料包括以下质量百分比的矿物：硅酸三钙46‑60%；硅酸二钙20‑30％；铝酸三钙1‑2.5%；铁铝酸四钙17‑23％。本发明提供的这种原位韧性固井水泥，通过改变油井水泥矿物含量的组成，增大铁铝酸四钙的含量，高含铁铝酸四钙水泥额外增加的铁铝酸四钙可以发挥形核剂的作用，加速水泥的水化反应。当水泥基体额外增加铁铝酸四钙后，原本的部分孔隙被铁铝酸四钙颗粒所填充，使得高含铁铝酸四钙水泥的孔隙结构得到优化，进而提升水泥基体在应力作用下的力学性能，增强了水泥石的韧性。
In-situ tough well cementation cement, well cementation cement slurry and preparation method of well cementation cement slurry
一种原位韧性固井水泥和固井水泥浆及其制备方法
WU YANG (author) / WEI ZHOUSHENG (author) / WANG HAIPING (author) / ZENG YONG (author) / JIN HAISHENG (author) / PAN YUQIANG (author) / DONG ZHIMING (author) / RAO CHENWEI (author)
2023-06-16
Patent
Electronic Resource
Chinese
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