Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Cement paste composition, cement paste as well as preparation method and application of cement paste
The invention discloses a cement paste composition, cement paste as well as a preparation method and application of the cement paste. The cement paste composition comprises the following components in parts by weight: 60-90 parts of G-grade oil well cement, 10-40 parts of an active material, 3-12 parts of a toughening material, 3-12 parts of nano oxide, 1-6 parts of a salt-resistant fluid loss agent, 0.5-3 parts of a low-temperature early strength agent, 0.1-1 part of a dispersing agent, 0.2-1 part of a defoaming agent, 0.5-5 parts of an expanding agent and 40-48 parts of a sodium chloride solution, wherein the 3-day activity index of the active material is 150 to 200 percent. The well cementation cement paste provided by the invention can meet the well cementation construction requirements of a salt cavern type gas storage, has the characteristics of salt resistance, high early strength, high elasticity and toughness and the like compared with conventional well cementation cement paste, and can improve the well cementation quality of a salt bed section and guarantee the sealing integrity of a cement sheath under frequent injection and production. The cement paste composition disclosed by the invention is suitable for well cementation of the salt-cavern gas storage.
本发明公开了一种水泥浆组合物、水泥浆及其制备方法和应用。该水泥浆组合物包括：G级油井水泥60‑90重量份、活性材料10‑40重量份、增韧材料3‑12重量份、纳米氧化物3‑12重量份、抗盐降失水剂1‑6重量份、低温早强剂0.5‑3重量份、分散剂0.1‑1重量份、消泡剂0.2‑1重量份、膨胀剂0.5‑5重量份和氯化钠溶液40‑48重量份；其中，所述活性材料的3天活性指数为150‑200％。本发明提供的固井水泥浆，能够满足盐穴型储气库固井施工要求，与常规固井水泥浆相比，具有抗盐、高早强、高弹韧性等特征，可提高盐层段固井质量，保障频繁注采下水泥环密封完整性。本发明的水泥浆组合物适宜盐穴储气库固井使用。
Cement paste composition, cement paste as well as preparation method and application of cement paste
The invention discloses a cement paste composition, cement paste as well as a preparation method and application of the cement paste. The cement paste composition comprises the following components in parts by weight: 60-90 parts of G-grade oil well cement, 10-40 parts of an active material, 3-12 parts of a toughening material, 3-12 parts of nano oxide, 1-6 parts of a salt-resistant fluid loss agent, 0.5-3 parts of a low-temperature early strength agent, 0.1-1 part of a dispersing agent, 0.2-1 part of a defoaming agent, 0.5-5 parts of an expanding agent and 40-48 parts of a sodium chloride solution, wherein the 3-day activity index of the active material is 150 to 200 percent. The well cementation cement paste provided by the invention can meet the well cementation construction requirements of a salt cavern type gas storage, has the characteristics of salt resistance, high early strength, high elasticity and toughness and the like compared with conventional well cementation cement paste, and can improve the well cementation quality of a salt bed section and guarantee the sealing integrity of a cement sheath under frequent injection and production. The cement paste composition disclosed by the invention is suitable for well cementation of the salt-cavern gas storage.
本发明公开了一种水泥浆组合物、水泥浆及其制备方法和应用。该水泥浆组合物包括：G级油井水泥60‑90重量份、活性材料10‑40重量份、增韧材料3‑12重量份、纳米氧化物3‑12重量份、抗盐降失水剂1‑6重量份、低温早强剂0.5‑3重量份、分散剂0.1‑1重量份、消泡剂0.2‑1重量份、膨胀剂0.5‑5重量份和氯化钠溶液40‑48重量份；其中，所述活性材料的3天活性指数为150‑200％。本发明提供的固井水泥浆，能够满足盐穴型储气库固井施工要求，与常规固井水泥浆相比，具有抗盐、高早强、高弹韧性等特征，可提高盐层段固井质量，保障频繁注采下水泥环密封完整性。本发明的水泥浆组合物适宜盐穴储气库固井使用。
Cement paste composition, cement paste as well as preparation method and application of cement paste
水泥浆组合物、水泥浆及其制备方法和应用
LIU LUO (Autor:in) / LIU RENGGUANG (Autor:in) / LI HE (Autor:in) / CHANG LIANYU (Autor:in) / LIU KUI (Autor:in) / ZENG MIN (Autor:in)
03.12.2024
Patent
Elektronische Ressource
Chinesisch
| Europäisches Patentamt | 2021
| Europäisches Patentamt | 2023