Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-temperature-resistant large-temperature-difference elastic-tough cement paste system and preparation method thereof
The invention provides a high-temperature-resistant large-temperature-difference elastic-tough cement paste system, which comprises the following components in parts by weight: 100 parts of G-grade oil well cement, 2-10 parts of retarder, 1-8 parts of fluid loss agent, 2-15 parts of elastic material, 0.05-3 parts of toughening material, 0-75 parts of strength stabilizing material, 2-8 parts of expanding agent, 0.5-4 parts of early strength agent, 0-300 parts of a weighting agent, 0-10 parts of an interfacial cementation enhancer, 0.5-3 parts of a defoaming agent and 35-200 parts of water. According to the invention, the requirement for one-time sealing of an ultra-long sealing section of an ultra-deep high-temperature high-pressure oil-gas well can be met, the overall sealing performance of a cement sheath of the ultra-long sealing section is improved, and a wellhead is prevented from being under pressure.
本发明提供了一种耐高温大温差弹韧性水泥浆体系，以重量份数计，所述水泥浆体系包括：G级油井水泥100份、缓凝剂2～10份、降失水剂1～8份、弹性材料2～15份、增韧材料0.05～3份、强度稳定材料0～75份、膨胀剂2～8份、早强剂0.5～4份、加重剂0～300份、界面胶结增强剂0～10份、消泡剂0.5～3份、水35～200份。可满足超深高温高压油气井超长封固段一次性封固要求，提高超长封固段水泥环整体密封性能，预防井口带压。
High-temperature-resistant large-temperature-difference elastic-tough cement paste system and preparation method thereof
The invention provides a high-temperature-resistant large-temperature-difference elastic-tough cement paste system, which comprises the following components in parts by weight: 100 parts of G-grade oil well cement, 2-10 parts of retarder, 1-8 parts of fluid loss agent, 2-15 parts of elastic material, 0.05-3 parts of toughening material, 0-75 parts of strength stabilizing material, 2-8 parts of expanding agent, 0.5-4 parts of early strength agent, 0-300 parts of a weighting agent, 0-10 parts of an interfacial cementation enhancer, 0.5-3 parts of a defoaming agent and 35-200 parts of water. According to the invention, the requirement for one-time sealing of an ultra-long sealing section of an ultra-deep high-temperature high-pressure oil-gas well can be met, the overall sealing performance of a cement sheath of the ultra-long sealing section is improved, and a wellhead is prevented from being under pressure.
本发明提供了一种耐高温大温差弹韧性水泥浆体系，以重量份数计，所述水泥浆体系包括：G级油井水泥100份、缓凝剂2～10份、降失水剂1～8份、弹性材料2～15份、增韧材料0.05～3份、强度稳定材料0～75份、膨胀剂2～8份、早强剂0.5～4份、加重剂0～300份、界面胶结增强剂0～10份、消泡剂0.5～3份、水35～200份。可满足超深高温高压油气井超长封固段一次性封固要求，提高超长封固段水泥环整体密封性能，预防井口带压。
High-temperature-resistant large-temperature-difference elastic-tough cement paste system and preparation method thereof
一种耐高温大温差弹韧性水泥浆体系及其制备方法
GAO YUAN (Autor:in) / YANG GUANGGUO (Autor:in) / ZHOU SHIMING (Autor:in) / LU PEIQING (Autor:in) / TAO QIAN (Autor:in) / SANG LAIYU (Autor:in) / YANG HONGQI (Autor:in)
12.03.2021
Patent
Elektronische Ressource
Chinesisch
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