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A platform for research: civil engineering, architecture and urbanism
Thermal-insulation cement paste system suitable for geothermal well and preparation method of thermal-insulation cement paste system
The invention discloses a thermal insulation cement paste system suitable for geothermal wells and a preparation method thereof, and solves the problems of high heat conductivity coefficient and poor thermal insulation performance of existing well cementation cement. The thermal insulation cement paste is prepared from G-grade oil well cement, a thermal insulation material, lead-zinc tailings, silica fume, a dispersing agent, a high-temperature fluid loss agent, a high-temperature retarder and a defoaming agent, wherein the thermal insulation material is obtained by mixing hollow ceramic microbeads, waste rock wool board powder, protein rock powder and modified polycarbonate. The invention has the characteristics of low heat conductivity coefficient, good thermal insulation effect, fast strength development, high compressive strength, good system stability, good toughness and the like; the heat loss in the geothermal resource exploitation process can be effectively reduced, the utilization rate of geothermal resources is increased, and the temperature resistance and toughness of set cement can be improved.
本发明公开一种适用于地热井的保温水泥浆体系及其制备方法，解决了现有固井水泥导热系数高、保温性能差的问题。本发明保温水泥浆体由G级油井水泥、保温材料、铅锌尾矿、硅灰、分散剂、高温降失水剂、高温缓凝剂和消泡剂组成，所述保温材料由空心陶瓷微珠、废弃岩棉板粉末、蛋白岩粉末和改性聚碳酸酯混合得到。本发明具有导热系数低，保温效果好、强度发展快、抗压强度高，体系稳定性好、韧性好等特点；不仅能有效降低地热资源开采过程中热量的损失、提高地热资源利用率，还能提高水泥石耐温性能及韧性。
Thermal-insulation cement paste system suitable for geothermal well and preparation method of thermal-insulation cement paste system
The invention discloses a thermal insulation cement paste system suitable for geothermal wells and a preparation method thereof, and solves the problems of high heat conductivity coefficient and poor thermal insulation performance of existing well cementation cement. The thermal insulation cement paste is prepared from G-grade oil well cement, a thermal insulation material, lead-zinc tailings, silica fume, a dispersing agent, a high-temperature fluid loss agent, a high-temperature retarder and a defoaming agent, wherein the thermal insulation material is obtained by mixing hollow ceramic microbeads, waste rock wool board powder, protein rock powder and modified polycarbonate. The invention has the characteristics of low heat conductivity coefficient, good thermal insulation effect, fast strength development, high compressive strength, good system stability, good toughness and the like; the heat loss in the geothermal resource exploitation process can be effectively reduced, the utilization rate of geothermal resources is increased, and the temperature resistance and toughness of set cement can be improved.
本发明公开一种适用于地热井的保温水泥浆体系及其制备方法，解决了现有固井水泥导热系数高、保温性能差的问题。本发明保温水泥浆体由G级油井水泥、保温材料、铅锌尾矿、硅灰、分散剂、高温降失水剂、高温缓凝剂和消泡剂组成，所述保温材料由空心陶瓷微珠、废弃岩棉板粉末、蛋白岩粉末和改性聚碳酸酯混合得到。本发明具有导热系数低，保温效果好、强度发展快、抗压强度高，体系稳定性好、韧性好等特点；不仅能有效降低地热资源开采过程中热量的损失、提高地热资源利用率，还能提高水泥石耐温性能及韧性。
Thermal-insulation cement paste system suitable for geothermal well and preparation method of thermal-insulation cement paste system
一种适用于地热井的保温水泥浆体系及其制备方法
2024-01-05
Patent
Electronic Resource
Chinese
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