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Well cementation cement paste for ultra-high-temperature ultra-deep well and preparation method of well cementation cement paste
The invention provides well cementation cement paste for an ultra-high-temperature and ultra-deep well and a preparation method of the well cementation cement paste. The cement paste comprises the following components in parts by weight: 100 parts of oil well cement, 30-60 parts of a reinforcing agent, 2-25 parts of a strength recession resistant agent, 2-10 parts of a cement stone structure stabilizer, 0.5-5 parts of a suspension stabilizer, 0.5-3 parts of a dispersing agent, 0.5-8 parts of a retarder, 3-6 parts of a fluid loss agent, 0.1-1 part of a defoaming agent and 50-70 parts of water. The retarder comprises at least one of a first copolymer and organic phosphonate; monomers for forming the first copolymer are selected from at least two of 2-acrylamido-2-methylpropanesulfonic acid, dimethyl diallyl ammonium chloride, methylene succinic acid and acrylic acid. The cement paste for well cementation has good rheological property, high-temperature stability and high-temperature setting control performance, ensures that the strength of well cementation cement stone does not decline for a long time, and is suitable for ultra-high-temperature well cementation of deep wells, ultra-deep wells and special resource wells with the well bottom circulation temperature of 240 DEG C and the well bottom static temperature of 260 DEG C or above.
本发明提供一种用于超高温超深井的固井水泥浆及其制备方法，水泥浆组成按照重量份包括：油井水泥100份、增强剂30‑60份、抗强度衰退剂2‑25份、水泥石结构稳定剂2‑10份、悬浮稳定剂0.5‑5份、分散剂0.5‑3份、缓凝剂0.5‑8份、降失水剂3‑6份、消泡剂0.1‑1份、水50‑70份；缓凝剂包括第一共聚物、有机膦酸盐中的至少一种；形成所述第一共聚物的单体选自2‑丙烯酰胺基‑2‑甲基丙磺酸、二甲基二烯丙基氯化铵、亚甲基丁二酸、丙烯酸中的至少两种。该固井用水泥浆具有良好的流变性、高温稳定性、高温调凝性，并保证固井水泥石的强度长期不衰退，适用于井底循环温度240℃、井底静止温度260℃以上的深井超深井及特殊资源井超高温固井。
Well cementation cement paste for ultra-high-temperature ultra-deep well and preparation method of well cementation cement paste
The invention provides well cementation cement paste for an ultra-high-temperature and ultra-deep well and a preparation method of the well cementation cement paste. The cement paste comprises the following components in parts by weight: 100 parts of oil well cement, 30-60 parts of a reinforcing agent, 2-25 parts of a strength recession resistant agent, 2-10 parts of a cement stone structure stabilizer, 0.5-5 parts of a suspension stabilizer, 0.5-3 parts of a dispersing agent, 0.5-8 parts of a retarder, 3-6 parts of a fluid loss agent, 0.1-1 part of a defoaming agent and 50-70 parts of water. The retarder comprises at least one of a first copolymer and organic phosphonate; monomers for forming the first copolymer are selected from at least two of 2-acrylamido-2-methylpropanesulfonic acid, dimethyl diallyl ammonium chloride, methylene succinic acid and acrylic acid. The cement paste for well cementation has good rheological property, high-temperature stability and high-temperature setting control performance, ensures that the strength of well cementation cement stone does not decline for a long time, and is suitable for ultra-high-temperature well cementation of deep wells, ultra-deep wells and special resource wells with the well bottom circulation temperature of 240 DEG C and the well bottom static temperature of 260 DEG C or above.
本发明提供一种用于超高温超深井的固井水泥浆及其制备方法，水泥浆组成按照重量份包括：油井水泥100份、增强剂30‑60份、抗强度衰退剂2‑25份、水泥石结构稳定剂2‑10份、悬浮稳定剂0.5‑5份、分散剂0.5‑3份、缓凝剂0.5‑8份、降失水剂3‑6份、消泡剂0.1‑1份、水50‑70份；缓凝剂包括第一共聚物、有机膦酸盐中的至少一种；形成所述第一共聚物的单体选自2‑丙烯酰胺基‑2‑甲基丙磺酸、二甲基二烯丙基氯化铵、亚甲基丁二酸、丙烯酸中的至少两种。该固井用水泥浆具有良好的流变性、高温稳定性、高温调凝性，并保证固井水泥石的强度长期不衰退，适用于井底循环温度240℃、井底静止温度260℃以上的深井超深井及特殊资源井超高温固井。
Well cementation cement paste for ultra-high-temperature ultra-deep well and preparation method of well cementation cement paste
一种用于超高温超深井的固井水泥浆及其制备方法
YU YONGJIN (author) / XIA XIUJIAN (author) / JIN JIANZHOU (author) / QU CONGFENG (author) / QI FENGZHONG (author) / XU MING (author) / ZHANG HUA (author) / ZHANG CHI (author) / LIU HUITING (author) / WANG GUIFU (author)
2024-03-22
Patent
Electronic Resource
Chinese
| European Patent Office | 2023
| European Patent Office | 2021