Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Low-density reinforcing agent for oil well cement and preparation method thereof
The invention discloses a low-density reinforcing agent for oil well cement and a preparation method thereof. The low-density reinforcing agent is prepared from the following components: a special early strength agent, silica fume and superfine slag powder, wherein the special early strength agent is prepared from one or more of the following components: anhydrous sodium sulphate, aluminum ammonium sulfate, calcium chloride, polyaluminum chloride, nano silicon dioxide, hydrotalcite and a mixture of white carbon black and triisopropanolamine. The fluidity of cement paste prepared from the low-density reinforcing agent for oil well cement is 23-25cm, and the fluidity of the paste is good; the cement paste pressurization density difference is smaller than or equal to 0.02 g/cm<3>, and the cement paste stability is good; zero free water can be realized; set cement is high in strength development speed, the 24-hour compressive strength reaches 7 MPa or above, and the 48-hour compressive strength reaches 10 MPa or above; the thickening time linearity is good, the phenomena of lifting and bulging are avoided, and the comprehensive performance of the cement paste is good.
本发明公开一种油井水泥用低密度增强剂及其制备方法，由如下组分组成专用早强剂、微硅粉和超细矿渣粉，所述专用早强剂由如下组分的一种或多种组成：元明粉、硫酸铝铵、氯化钙、聚合氯化铝、纳米二氧化硅、水滑石和白炭黑和三异丙醇胺的混合物。油井水泥用低密度增强剂配制的水泥浆流动度在23～25cm之间，浆体流动性良好；水泥浆加压密度差≤0.02g/cm，水泥浆稳定性较好；可实现零自由水；水泥石强度发育快，24小时抗压强度达到7MPa以上，48MPa小时抗压强度达到10MPa以上；稠化时间线性良好，无起台、鼓包现象，水泥浆综合性能良好。
Low-density reinforcing agent for oil well cement and preparation method thereof
The invention discloses a low-density reinforcing agent for oil well cement and a preparation method thereof. The low-density reinforcing agent is prepared from the following components: a special early strength agent, silica fume and superfine slag powder, wherein the special early strength agent is prepared from one or more of the following components: anhydrous sodium sulphate, aluminum ammonium sulfate, calcium chloride, polyaluminum chloride, nano silicon dioxide, hydrotalcite and a mixture of white carbon black and triisopropanolamine. The fluidity of cement paste prepared from the low-density reinforcing agent for oil well cement is 23-25cm, and the fluidity of the paste is good; the cement paste pressurization density difference is smaller than or equal to 0.02 g/cm<3>, and the cement paste stability is good; zero free water can be realized; set cement is high in strength development speed, the 24-hour compressive strength reaches 7 MPa or above, and the 48-hour compressive strength reaches 10 MPa or above; the thickening time linearity is good, the phenomena of lifting and bulging are avoided, and the comprehensive performance of the cement paste is good.
本发明公开一种油井水泥用低密度增强剂及其制备方法，由如下组分组成专用早强剂、微硅粉和超细矿渣粉，所述专用早强剂由如下组分的一种或多种组成：元明粉、硫酸铝铵、氯化钙、聚合氯化铝、纳米二氧化硅、水滑石和白炭黑和三异丙醇胺的混合物。油井水泥用低密度增强剂配制的水泥浆流动度在23～25cm之间，浆体流动性良好；水泥浆加压密度差≤0.02g/cm，水泥浆稳定性较好；可实现零自由水；水泥石强度发育快，24小时抗压强度达到7MPa以上，48MPa小时抗压强度达到10MPa以上；稠化时间线性良好，无起台、鼓包现象，水泥浆综合性能良好。
Low-density reinforcing agent for oil well cement and preparation method thereof
一种油井水泥用低密度增强剂及其制备方法
GUO JUAN (Autor:in) / LI XINFEN (Autor:in) / GUO FENG (Autor:in) / JIN JIANZHONG (Autor:in) / LI LINFENG (Autor:in) / ZHANG FENG (Autor:in) / ZHAO SHUDAN (Autor:in) / LI HAO (Autor:in) / ZHANG KE (Autor:in) / WANG AIMIN (Autor:in)
05.06.2020
Patent
Elektronische Ressource
Chinesisch
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