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High-temperature-resistant well cementation material as well as preparation method and application thereof
The invention belongs to the technical field of oil and gas well cementation, and relates to a high-temperature-resistant well cementation material and a preparation method and application thereof. The high-temperature-resistant well cementing material comprises the following raw materials in parts by weight: 100 parts of aluminate cement, 0-20 parts of fly ash, 2-5 parts of phosphate, 36-42 parts of water and 6 parts of an additive. During preparation, all the raw material components are mixed to form cement paste, and the cement paste is cured to form the high-temperature-resistant well cementing material. The high-temperature-resistant well cementation material can be used in the well cementation process of a low-maturity shale oil in-situ conversion well, the strength stability of set cement in the high-temperature environment of 650 DEG C can be guaranteed, and after treatment is conducted for 7 days at the high temperature of 650 DEG C, the compressive strength of the set cement is kept to be 31.5 MPa or above, the elastic modulus is kept to be 5.1 GPa or above, and the permeability is kept to be 0.7 mD or below.
本发明属于油气井固井技术领域，涉及一种耐高温固井材料及其制备方法和应用。该耐高温固井材料以重量份计，原料组成为：铝酸盐水泥100份，粉煤灰0‑20份，磷酸盐2‑5份，水36‑42份，外加剂6份。制备时，将各原料组分混合形成水泥浆，经养护后成为耐高温固井材料。本发明所述的耐高温固井材料可用于低成熟页岩油原位转化井固井过程，可以保证在650℃高温环境下水泥石的强度稳定性问题，650℃高温处理7天后，水泥石的抗压强度保持在31.5MPa以上，弹性模量保持在5.1GPa以上，渗透率保持在0.7mD以下。
High-temperature-resistant well cementation material as well as preparation method and application thereof
The invention belongs to the technical field of oil and gas well cementation, and relates to a high-temperature-resistant well cementation material and a preparation method and application thereof. The high-temperature-resistant well cementing material comprises the following raw materials in parts by weight: 100 parts of aluminate cement, 0-20 parts of fly ash, 2-5 parts of phosphate, 36-42 parts of water and 6 parts of an additive. During preparation, all the raw material components are mixed to form cement paste, and the cement paste is cured to form the high-temperature-resistant well cementing material. The high-temperature-resistant well cementation material can be used in the well cementation process of a low-maturity shale oil in-situ conversion well, the strength stability of set cement in the high-temperature environment of 650 DEG C can be guaranteed, and after treatment is conducted for 7 days at the high temperature of 650 DEG C, the compressive strength of the set cement is kept to be 31.5 MPa or above, the elastic modulus is kept to be 5.1 GPa or above, and the permeability is kept to be 0.7 mD or below.
本发明属于油气井固井技术领域，涉及一种耐高温固井材料及其制备方法和应用。该耐高温固井材料以重量份计，原料组成为：铝酸盐水泥100份，粉煤灰0‑20份，磷酸盐2‑5份，水36‑42份，外加剂6份。制备时，将各原料组分混合形成水泥浆，经养护后成为耐高温固井材料。本发明所述的耐高温固井材料可用于低成熟页岩油原位转化井固井过程，可以保证在650℃高温环境下水泥石的强度稳定性问题，650℃高温处理7天后，水泥石的抗压强度保持在31.5MPa以上，弹性模量保持在5.1GPa以上，渗透率保持在0.7mD以下。
High-temperature-resistant well cementation material as well as preparation method and application thereof
一种耐高温固井材料及其制备方法和应用
LI HAILONG (author) / PANG XUEYU (author) / QIN JIANKUN (author) / ZHANG ZHEN (author)
2023-06-23
Patent
Electronic Resource
Chinese
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