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Well cementation cement slurry system suitable for CO2 heat extraction type geothermal well and preparation method of well cementation cement slurry system
The invention discloses a well cementation cement slurry system suitable for a CO2 heat removal type geothermal well and a preparation method of the well cementation cement slurry system. The well cementation cement slurry system is prepared from the following components in percentage by weight: 42 to 63 percent of G-grade oil well cement, 1 to 2 percent of nano boehmite, 20 to 25 percent of terrazzo waste, 20 to 25 percent of CO2 corrosion resistant thermal insulation material and 1 percent of dispersing agent. According to the invention, the CO2 corrosion resistant thermal insulation material is adopted, and inorganic materials and organic materials are combined to synergistically enhance the CO2 corrosion resistance of the material; the thermal insulation substrate is high in volcanic ash activity, low in thermal insulation coefficient and good in thermal insulation effect; the nano boehmite is adopted to promote and participate in cement hydration reaction, and the nano boehmite and the terrazzo jointly reduce the calcium-silicon ratio, so that the high-temperature strength stability of a cement slurry system is improved. And various solid wastes are utilized, so that the material is green and environment-friendly, and the cost is low.
本发明公开一种适用CO2取热型地热井用固井水泥浆体系及其制备方法，固井水泥浆体系包括按重量百分比计的42～63wt.％的G级油井水泥、1～2wt.％的纳米勃姆石、20～25wt.％的水磨石废料、20～25wt.％的耐CO2腐蚀保温材料和1wt.％的分散剂。本发明采用耐CO2腐蚀保温材料，以无机材料和有机材料相结合，协同增强材料的耐CO2腐蚀性能；采用保温基体，其火山灰活性高、保导热系数低、温效果好；采用纳米勃姆石以促进并参与水泥水化反应，并与水磨石共同降低钙硅比，提高水泥浆体系的高温强度稳定性。本发明还利用了多种固体废料，材料绿色环保，成本低。
Well cementation cement slurry system suitable for CO2 heat extraction type geothermal well and preparation method of well cementation cement slurry system
The invention discloses a well cementation cement slurry system suitable for a CO2 heat removal type geothermal well and a preparation method of the well cementation cement slurry system. The well cementation cement slurry system is prepared from the following components in percentage by weight: 42 to 63 percent of G-grade oil well cement, 1 to 2 percent of nano boehmite, 20 to 25 percent of terrazzo waste, 20 to 25 percent of CO2 corrosion resistant thermal insulation material and 1 percent of dispersing agent. According to the invention, the CO2 corrosion resistant thermal insulation material is adopted, and inorganic materials and organic materials are combined to synergistically enhance the CO2 corrosion resistance of the material; the thermal insulation substrate is high in volcanic ash activity, low in thermal insulation coefficient and good in thermal insulation effect; the nano boehmite is adopted to promote and participate in cement hydration reaction, and the nano boehmite and the terrazzo jointly reduce the calcium-silicon ratio, so that the high-temperature strength stability of a cement slurry system is improved. And various solid wastes are utilized, so that the material is green and environment-friendly, and the cost is low.
本发明公开一种适用CO2取热型地热井用固井水泥浆体系及其制备方法，固井水泥浆体系包括按重量百分比计的42～63wt.％的G级油井水泥、1～2wt.％的纳米勃姆石、20～25wt.％的水磨石废料、20～25wt.％的耐CO2腐蚀保温材料和1wt.％的分散剂。本发明采用耐CO2腐蚀保温材料，以无机材料和有机材料相结合，协同增强材料的耐CO2腐蚀性能；采用保温基体，其火山灰活性高、保导热系数低、温效果好；采用纳米勃姆石以促进并参与水泥水化反应，并与水磨石共同降低钙硅比，提高水泥浆体系的高温强度稳定性。本发明还利用了多种固体废料，材料绿色环保，成本低。
Well cementation cement slurry system suitable for CO2 heat extraction type geothermal well and preparation method of well cementation cement slurry system
一种适用CO2取热型地热井用固井水泥浆体系及其制备方法
2023-12-15
Patent
Electronic Resource
Chinese
| European Patent Office | 2024
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Well cementation cement slurry composition and well cementation cement slurry
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