Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Ultrahigh-strength tough cement paste system for well cementation as well as preparation and application thereof
The invention provides an ultrahigh-strength tough cement slurry system for well cementation and preparation and application thereof. The ultrahigh-strength tough cement slurry system for well cementation comprises the following raw materials: 100 parts by weight of cement, 20-40 parts by weight of a high-temperature reinforcing material, 0.5-6 parts by weight of an inorganic toughening material, 0.5-4 parts by weight of a suspension stabilizer, 2-6 parts by weight of micro silicon, 0.5-1.5 parts of a dispersing agent, 2-6 parts of a fluid loss agent, 1-8 parts of a retarder, 0.2-1 part of a defoaming agent and 40-60 parts of clear water. The cement paste system is good in flowability and sedimentation stability, low in water loss, adjustable in thickening time and wide in adaptive temperature range; the set cement has the characteristics of ultrahigh strength and the like, well cementation requirements of deep shale gas, high-temperature deep wells and the like can be well met, set cement strength decline caused by high-temperature strength can be avoided, and the service lifetime of an oil-gas well can be further prolonged.
本发明提供了一种固井用超高强度韧性水泥浆体系及其制备与应用，所述固井用超高强度韧性水泥浆体系的原料组成包括：100重量份的水泥，20‑40重量份的高温增强材料，0.5‑6重量份的无机增韧材料，0.5‑4重量份的悬浮稳定剂，2‑6重量份的微硅，0.5‑1.5重量份的分散剂，2‑6重量份的降失水剂，1‑8重量份的缓凝剂，0.2‑1重量份的消泡剂及40‑60重量份的清水。该水泥浆体系流动性、沉降稳定性好，失水量低，稠化时间可调，适应温度范围广；水泥石具有超高强度等特性，能够很好地满足深层页岩气、高温深井等固井要求，可避免因高温强度引起的水泥石强度衰退，进而可以延长油气井的使用寿命。
Ultrahigh-strength tough cement paste system for well cementation as well as preparation and application thereof
The invention provides an ultrahigh-strength tough cement slurry system for well cementation and preparation and application thereof. The ultrahigh-strength tough cement slurry system for well cementation comprises the following raw materials: 100 parts by weight of cement, 20-40 parts by weight of a high-temperature reinforcing material, 0.5-6 parts by weight of an inorganic toughening material, 0.5-4 parts by weight of a suspension stabilizer, 2-6 parts by weight of micro silicon, 0.5-1.5 parts of a dispersing agent, 2-6 parts of a fluid loss agent, 1-8 parts of a retarder, 0.2-1 part of a defoaming agent and 40-60 parts of clear water. The cement paste system is good in flowability and sedimentation stability, low in water loss, adjustable in thickening time and wide in adaptive temperature range; the set cement has the characteristics of ultrahigh strength and the like, well cementation requirements of deep shale gas, high-temperature deep wells and the like can be well met, set cement strength decline caused by high-temperature strength can be avoided, and the service lifetime of an oil-gas well can be further prolonged.
本发明提供了一种固井用超高强度韧性水泥浆体系及其制备与应用，所述固井用超高强度韧性水泥浆体系的原料组成包括：100重量份的水泥，20‑40重量份的高温增强材料，0.5‑6重量份的无机增韧材料，0.5‑4重量份的悬浮稳定剂，2‑6重量份的微硅，0.5‑1.5重量份的分散剂，2‑6重量份的降失水剂，1‑8重量份的缓凝剂，0.2‑1重量份的消泡剂及40‑60重量份的清水。该水泥浆体系流动性、沉降稳定性好，失水量低，稠化时间可调，适应温度范围广；水泥石具有超高强度等特性，能够很好地满足深层页岩气、高温深井等固井要求，可避免因高温强度引起的水泥石强度衰退，进而可以延长油气井的使用寿命。
Ultrahigh-strength tough cement paste system for well cementation as well as preparation and application thereof
一种固井用超高强度韧性水泥浆体系及其制备与应用
DING ZHIWEI (Autor:in) / ZHANG HUA (Autor:in) / YU YONGJIN (Autor:in) / JIN JIANZHOU (Autor:in) / XU MING (Autor:in) / QI FENGZHONG (Autor:in) / QU CONGFENG (Autor:in) / ZHANG CHI (Autor:in) / LIU ZISHUAI (Autor:in) / ZHOU CHONGFENG (Autor:in)
11.06.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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