Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Novel high-temperature-resistant well cementation cement slurry system for myriameter deep well
The invention discloses a novel high-temperature-resistant well cementation cement slurry system for a myriameter deep well, and relates to the technical field of well cementation materials for oil and gas well engineering. The well cementation cement slurry system is prepared from the following components in parts by weight: 100 parts of low-heat Portland cement, 10 to 20 parts of abnormal gelling prevention material, 35 to 55 parts of reinforced anti-declining material, 10 to 20 parts of suspended filtrate loss reduction material, 6 to 8 parts of high-temperature fluid loss agent and 2 to 5 parts of high-temperature retarder, wherein the abnormity-preventing cementing material comprises the following components in parts by weight: (40-60) parts of ulexite, (20-40) parts of broolerite, (10-20) parts of datolite and (5-15) parts of chalcanthite. The content of dicalcium silicate in cement components is limited, and the specific surface area of cement is reduced, so that the hydration rate of slurry in a high-temperature environment is relieved, the phenomenon that the cement slurry rapidly generates abnormal gelling is inhibited, and the abnormal gelling prevention material has a good anti-blocking effect from the perspective of cement hydration products. The abnormal gelling influence caused by fluctuation of cement mineral components in different batches on the cement paste is solved, and meanwhile, other performance of the paste can be stably controlled.
本发明公开了一种万米深井用新型耐高温固井水泥浆体系，涉及油气井工程固井材料技术领域。本发明的固井水泥浆体系包括按重量份计的以下组分：低热硅酸盐水泥100份，防异常胶凝材料10~20份，增强抗衰退材料35~55份，悬浮降滤失材料10~20份，高温降失水剂6~8份，高温缓凝剂2~5份；其中防异常胶凝材料包括按重量份计的钠硼解石:板硼钙石:硅硼钠石:胆矾=(40~60):(20~40):(10~20):(5~15)。本发明通过限定水泥组分中硅酸二钙含量和降低水泥比表面积，以缓解高温环境下浆体的水化速率，抑制水泥浆快速产生异常胶凝现象，防异常胶凝材料从水泥水化产物的角度出发，解决不同批次下水泥矿物组分波动对水泥浆带来的异常胶凝影响，同时兼备浆体的其他性能稳定控制。
Novel high-temperature-resistant well cementation cement slurry system for myriameter deep well
The invention discloses a novel high-temperature-resistant well cementation cement slurry system for a myriameter deep well, and relates to the technical field of well cementation materials for oil and gas well engineering. The well cementation cement slurry system is prepared from the following components in parts by weight: 100 parts of low-heat Portland cement, 10 to 20 parts of abnormal gelling prevention material, 35 to 55 parts of reinforced anti-declining material, 10 to 20 parts of suspended filtrate loss reduction material, 6 to 8 parts of high-temperature fluid loss agent and 2 to 5 parts of high-temperature retarder, wherein the abnormity-preventing cementing material comprises the following components in parts by weight: (40-60) parts of ulexite, (20-40) parts of broolerite, (10-20) parts of datolite and (5-15) parts of chalcanthite. The content of dicalcium silicate in cement components is limited, and the specific surface area of cement is reduced, so that the hydration rate of slurry in a high-temperature environment is relieved, the phenomenon that the cement slurry rapidly generates abnormal gelling is inhibited, and the abnormal gelling prevention material has a good anti-blocking effect from the perspective of cement hydration products. The abnormal gelling influence caused by fluctuation of cement mineral components in different batches on the cement paste is solved, and meanwhile, other performance of the paste can be stably controlled.
本发明公开了一种万米深井用新型耐高温固井水泥浆体系，涉及油气井工程固井材料技术领域。本发明的固井水泥浆体系包括按重量份计的以下组分：低热硅酸盐水泥100份，防异常胶凝材料10~20份，增强抗衰退材料35~55份，悬浮降滤失材料10~20份，高温降失水剂6~8份，高温缓凝剂2~5份；其中防异常胶凝材料包括按重量份计的钠硼解石:板硼钙石:硅硼钠石:胆矾=(40~60):(20~40):(10~20):(5~15)。本发明通过限定水泥组分中硅酸二钙含量和降低水泥比表面积，以缓解高温环境下浆体的水化速率，抑制水泥浆快速产生异常胶凝现象，防异常胶凝材料从水泥水化产物的角度出发，解决不同批次下水泥矿物组分波动对水泥浆带来的异常胶凝影响，同时兼备浆体的其他性能稳定控制。
Novel high-temperature-resistant well cementation cement slurry system for myriameter deep well
一种万米深井用新型耐高温固井水泥浆体系
XUE YUANTAO (Autor:in) / LIU HUAN (Autor:in) / WEI XUEQI (Autor:in) / ZENG XUELING (Autor:in) / GU ANLIN (Autor:in) / WANG JIA (Autor:in) / ZHANG YANGYONG (Autor:in)
03.01.2025
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
Well cementation cement slurry composition and well cementation cement slurry
| Europäisches Patentamt | 2022
| Europäisches Patentamt | 2024
| Europäisches Patentamt | 2023
Low-temperature low-density well cementation cement slurry system
| Europäisches Patentamt | 2024