Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-strength low-friction tough cement paste suitable for narrow annular space well cementation of slimming well
The invention relates to high-strength low-friction tough cement paste suitable for narrow annular space well cementation of a slimming well, which comprises the following components in parts by mass: 100 parts of oil well cement, 42-46 parts of fresh water, 1-3 parts of a fluid loss agent, 2-4 parts of a composite flexibilizer, 5-8 parts of a superfine filler, 0.5-1.5 parts of a flow pattern regulator, 0.1-2 parts of a retarder and 0.2-0.5 part of a defoaming agent, and the density of the cement paste is 1.86 g/cm < 3 >-1.90 g/cm < 3 >. The high-strength low-friction tough cement paste has the excellent performance of high strength, small flowing friction, low elastic modulus and the like, can effectively reduce circulating pressure consumption of well cementation cementing construction, and reduces construction pressure and construction safety risks; the mechanical sealing integrity of a shaft cement sheath under the action of a high-frequency alternating load in the staged fracturing transformation process of a reservoir can also be ensured, and the high-strength low-friction tough cement paste is suitable for narrow annular space well cementation of a slimming well.
本发明涉及一种适用于瘦身井窄环隙固井用高强低摩阻韧性水泥浆，包括以下组分，按质量份数计为：油井水泥计100份，淡水42‑46份，降失水剂1‑3份，复合增韧剂2‑4份，超细填充剂5‑8份，流型调节剂0.5‑1.5份，缓凝剂0.1‑2份，消泡剂0.2‑0.5份，所述水泥浆密度为1.86g/cm3‑1.90g/cm3。高强低摩阻韧性水泥浆具有强度高、流动摩阻小、弹性模量低等优异性能，既可有效减小固井注水泥施工循环压耗，降低施工压力和施工安全风险，也可以保证井筒水泥环在储层分段压裂改造过程中高频次交变载荷作用下的力学密封完整性，是一种适用于瘦身井窄环隙固井用高强低摩阻韧性水泥浆。
High-strength low-friction tough cement paste suitable for narrow annular space well cementation of slimming well
The invention relates to high-strength low-friction tough cement paste suitable for narrow annular space well cementation of a slimming well, which comprises the following components in parts by mass: 100 parts of oil well cement, 42-46 parts of fresh water, 1-3 parts of a fluid loss agent, 2-4 parts of a composite flexibilizer, 5-8 parts of a superfine filler, 0.5-1.5 parts of a flow pattern regulator, 0.1-2 parts of a retarder and 0.2-0.5 part of a defoaming agent, and the density of the cement paste is 1.86 g/cm < 3 >-1.90 g/cm < 3 >. The high-strength low-friction tough cement paste has the excellent performance of high strength, small flowing friction, low elastic modulus and the like, can effectively reduce circulating pressure consumption of well cementation cementing construction, and reduces construction pressure and construction safety risks; the mechanical sealing integrity of a shaft cement sheath under the action of a high-frequency alternating load in the staged fracturing transformation process of a reservoir can also be ensured, and the high-strength low-friction tough cement paste is suitable for narrow annular space well cementation of a slimming well.
本发明涉及一种适用于瘦身井窄环隙固井用高强低摩阻韧性水泥浆，包括以下组分，按质量份数计为：油井水泥计100份，淡水42‑46份，降失水剂1‑3份，复合增韧剂2‑4份，超细填充剂5‑8份，流型调节剂0.5‑1.5份，缓凝剂0.1‑2份，消泡剂0.2‑0.5份，所述水泥浆密度为1.86g/cm3‑1.90g/cm3。高强低摩阻韧性水泥浆具有强度高、流动摩阻小、弹性模量低等优异性能，既可有效减小固井注水泥施工循环压耗，降低施工压力和施工安全风险，也可以保证井筒水泥环在储层分段压裂改造过程中高频次交变载荷作用下的力学密封完整性，是一种适用于瘦身井窄环隙固井用高强低摩阻韧性水泥浆。
High-strength low-friction tough cement paste suitable for narrow annular space well cementation of slimming well
一种适用于瘦身井窄环隙固井用高强低摩阻韧性水泥浆
SONG JINCHU (Autor:in) / HE JIBIAO (Autor:in) / LIU JUNJUN (Autor:in) / PENG BO (Autor:in) / ZHANG JIARUI (Autor:in) / ZHU WENZHAO (Autor:in)
02.02.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
| Europäisches Patentamt | 2023
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| Europäisches Patentamt | 2023