Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Large-temperature-difference well cementation cement paste and preparation method thereof
The invention discloses large-temperature-difference well cementation cement paste and a preparation method thereof. The large-temperature-difference well cementation cement paste comprises the following components in parts by weight: 100 parts of oil well cement, 0.5-40 parts of a strength stabilizer, 0-50 parts of a density regulator, 5-20 parts of a reinforcing material, 2-4 parts of an early strength agent, 0.5-3.5 parts of a retarder, 2-7 parts of a fluid loss agent, 1-2 parts of a dispersing agent, 0.1-0.5 part of a defoaming agent and 40-85 parts of water. The cement paste disclosed by the invention is adjustable in density, adjustable in thickening time, good in flowing property, good in sedimentation stability, low in water loss and free of free liquid, and meets the requirements of well cementation construction; meanwhile, the 48-hour compressive strength of top cement stone is larger than 10 MPa, the applicable circulating temperature ranges from 100 DEG C to 200 DEG C, the temperature difference ranges from 50 DEG C to 110 DEG C, and top cement paste can be prevented from super-retarding in large-temperature-difference well cementation operation.
本发明公开了一种大温差固井水泥浆及制备方法。该大温差固井水泥浆包括以下重量份的组分：油井水泥100份，强度稳定剂0.5～40份，密度调节剂0～50份，增强材料5～20份，早强剂2～4份，缓凝剂0.5～3.5份，降失水剂2～7份，分散剂1～2份，消泡剂0.1～0.5份，水40～85份。本发明的水泥浆密度可调、稠化时间可调、流动性能好、沉降稳定性好、失水量低、无游离液，满足固井施工要求；同时顶部水泥石48h抗压强度大于10MPa，适用循环温度100℃～200℃，温差50℃～110℃，可防止大温差固井作业中顶部水泥浆超缓凝。
Large-temperature-difference well cementation cement paste and preparation method thereof
The invention discloses large-temperature-difference well cementation cement paste and a preparation method thereof. The large-temperature-difference well cementation cement paste comprises the following components in parts by weight: 100 parts of oil well cement, 0.5-40 parts of a strength stabilizer, 0-50 parts of a density regulator, 5-20 parts of a reinforcing material, 2-4 parts of an early strength agent, 0.5-3.5 parts of a retarder, 2-7 parts of a fluid loss agent, 1-2 parts of a dispersing agent, 0.1-0.5 part of a defoaming agent and 40-85 parts of water. The cement paste disclosed by the invention is adjustable in density, adjustable in thickening time, good in flowing property, good in sedimentation stability, low in water loss and free of free liquid, and meets the requirements of well cementation construction; meanwhile, the 48-hour compressive strength of top cement stone is larger than 10 MPa, the applicable circulating temperature ranges from 100 DEG C to 200 DEG C, the temperature difference ranges from 50 DEG C to 110 DEG C, and top cement paste can be prevented from super-retarding in large-temperature-difference well cementation operation.
本发明公开了一种大温差固井水泥浆及制备方法。该大温差固井水泥浆包括以下重量份的组分：油井水泥100份，强度稳定剂0.5～40份，密度调节剂0～50份，增强材料5～20份，早强剂2～4份，缓凝剂0.5～3.5份，降失水剂2～7份，分散剂1～2份，消泡剂0.1～0.5份，水40～85份。本发明的水泥浆密度可调、稠化时间可调、流动性能好、沉降稳定性好、失水量低、无游离液，满足固井施工要求；同时顶部水泥石48h抗压强度大于10MPa，适用循环温度100℃～200℃，温差50℃～110℃，可防止大温差固井作业中顶部水泥浆超缓凝。
Large-temperature-difference well cementation cement paste and preparation method thereof
一种大温差固井水泥浆及制备方法
ZHANG XIAOBING (Autor:in) / JIN JIANZHOU (Autor:in) / YU YONGJIN (Autor:in) / QU CONGFENG (Autor:in) / QI FENGZHONG (Autor:in) / XU MING (Autor:in) / WANG ZHAOHUI (Autor:in) / ZHANG HUA (Autor:in) / XIA XIUJIAN (Autor:in) / ZHANG CHI (Autor:in)
22.04.2022
Patent
Elektronische Ressource
Chinesisch
| Europäisches Patentamt | 2024
| Europäisches Patentamt | 2024
CCUS well cementation cement paste and preparation method thereof
| Europäisches Patentamt | 2024
| Europäisches Patentamt | 2024