Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Cement paste composition, cement paste for well cementation as well as preparation method and application of cement paste
The invention provides a cement paste composition, a well cementation cement paste system comprising the cement paste composition and a preparation method of the well cementation cement paste system.The cement paste composition comprises cement, a high-temperature-resistant elastic material, a high-temperature-resistant fluid loss agent, a high-temperature-resistant inorganic anti-channeling emulsion, a high-temperature strength stabilizer, a weighting agent and water. A cement sheath formed by using the cement paste system in a high-temperature and high-pressure environment and in the laterlarge fracturing construction process has good elastic performance and good compressive strength, the integrity of the cement sheath can be kept for a long time, interlayer sealing is effectively guaranteed, and the risk of annulus pressure of a shale gas well is reduced.
本发明提供了一种水泥浆组合物、包括所述水泥浆组合物的固井水泥浆体系及其制备方法。所述水泥浆组合物包括水泥、抗高温弹性材料、抗高温降失水剂、抗高温无机防窜乳液、高温强度稳定剂、加重剂和水。使用该水泥浆体系在高温高压环境以及后期的大型压裂施工过程中形成的水泥环具有较好的弹性性能并且具有良好的抗压强度，可以长久地保持自身完整性，有效地保证了层间密封，降低了页岩气井环空带压风险。
Cement paste composition, cement paste for well cementation as well as preparation method and application of cement paste
The invention provides a cement paste composition, a well cementation cement paste system comprising the cement paste composition and a preparation method of the well cementation cement paste system.The cement paste composition comprises cement, a high-temperature-resistant elastic material, a high-temperature-resistant fluid loss agent, a high-temperature-resistant inorganic anti-channeling emulsion, a high-temperature strength stabilizer, a weighting agent and water. A cement sheath formed by using the cement paste system in a high-temperature and high-pressure environment and in the laterlarge fracturing construction process has good elastic performance and good compressive strength, the integrity of the cement sheath can be kept for a long time, interlayer sealing is effectively guaranteed, and the risk of annulus pressure of a shale gas well is reduced.
本发明提供了一种水泥浆组合物、包括所述水泥浆组合物的固井水泥浆体系及其制备方法。所述水泥浆组合物包括水泥、抗高温弹性材料、抗高温降失水剂、抗高温无机防窜乳液、高温强度稳定剂、加重剂和水。使用该水泥浆体系在高温高压环境以及后期的大型压裂施工过程中形成的水泥环具有较好的弹性性能并且具有良好的抗压强度，可以长久地保持自身完整性，有效地保证了层间密封，降低了页岩气井环空带压风险。
Cement paste composition, cement paste for well cementation as well as preparation method and application of cement paste
水泥浆组合物、固井用水泥浆及其制备方法与应用
TAO QIAN (Autor:in) / DU XIAOYU (Autor:in) / MIAO XIA (Autor:in) / ZENG MIN (Autor:in) / LU PEIQING (Autor:in) / LI XIAOJIANG (Autor:in)
05.03.2021
Patent
Elektronische Ressource
Chinesisch
| Europäisches Patentamt | 2023
Cement paste, application and well cementation method
| Europäisches Patentamt | 2024
Cement paste, application and well cementation method
| Europäisches Patentamt | 2024
| Europäisches Patentamt | 2024