Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Self-repairing material for oil-gas well cementation and preparation method
The invention discloses a self-repairing material for oil and gas well cementation and a preparation method. The self-repairing material is prepared from the following raw materials in parts by weight: 100 parts of an ethylene-isoprene-styrene segmented copolymer, 0.5-100 parts of a precursor, 1-50 parts of a coupling agent, 0.5 to 100 parts of water, 100-1000 parts of a solvent and 0.1-0.5 part of a catalyst. According to the invention, the ethylene-isoprene-styrene segmented copolymer is subjected to physical modification; powder is physically coated with nano silicon dioxide so that non-porous coating is realized, the cementation characteristic between rubber particles and CSH gel is improved, the temperature resistance and stability of self-repairing particles are improved, the mechanical property of set cement is improved, the elastic modulus of the set cement is effectively reduced, and the strain rate of the set cement is increased.
本发明公开了一种油气井固井采用的自修复材料及制备方法。所述自修复材料是由包括以下组分的原料制备而得：乙烯‑异戊二烯‑苯乙烯嵌段共聚物100重量份；前驱体0.5‑100重量份；偶联剂1‑50重量份；水0.5‑100重量份；溶剂100‑1000重量份；催化剂0.1‑0.5重量份。本发明通过对乙烯‑异戊二烯‑苯乙烯嵌段共聚物进行物理改性，在粉末表面物理包覆纳米二氧化硅，实现无孔包覆，改善橡胶颗粒与CSH凝胶间胶结特性，提高自修复颗粒的耐温能力、稳定性，同时改善水泥石力学性能的目的，有效降低水泥石弹性模量，增加水泥石应变率。
Self-repairing material for oil-gas well cementation and preparation method
The invention discloses a self-repairing material for oil and gas well cementation and a preparation method. The self-repairing material is prepared from the following raw materials in parts by weight: 100 parts of an ethylene-isoprene-styrene segmented copolymer, 0.5-100 parts of a precursor, 1-50 parts of a coupling agent, 0.5 to 100 parts of water, 100-1000 parts of a solvent and 0.1-0.5 part of a catalyst. According to the invention, the ethylene-isoprene-styrene segmented copolymer is subjected to physical modification; powder is physically coated with nano silicon dioxide so that non-porous coating is realized, the cementation characteristic between rubber particles and CSH gel is improved, the temperature resistance and stability of self-repairing particles are improved, the mechanical property of set cement is improved, the elastic modulus of the set cement is effectively reduced, and the strain rate of the set cement is increased.
本发明公开了一种油气井固井采用的自修复材料及制备方法。所述自修复材料是由包括以下组分的原料制备而得：乙烯‑异戊二烯‑苯乙烯嵌段共聚物100重量份；前驱体0.5‑100重量份；偶联剂1‑50重量份；水0.5‑100重量份；溶剂100‑1000重量份；催化剂0.1‑0.5重量份。本发明通过对乙烯‑异戊二烯‑苯乙烯嵌段共聚物进行物理改性，在粉末表面物理包覆纳米二氧化硅，实现无孔包覆，改善橡胶颗粒与CSH凝胶间胶结特性，提高自修复颗粒的耐温能力、稳定性，同时改善水泥石力学性能的目的，有效降低水泥石弹性模量，增加水泥石应变率。
Self-repairing material for oil-gas well cementation and preparation method
一种油气井固井采用的自修复材料及制备方法
ZHOU SHIMING (Autor:in) / WANG QICHUN (Autor:in) / ZENG MIN (Autor:in) / WANG XIAOJING (Autor:in) / GAO YUAN (Autor:in)
21.04.2020
Patent
Elektronische Ressource
Chinesisch
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