Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-temperature-resistant, high-strength, low-elasticity-modulus and high-density well cementation cement
The invention discloses high-temperature-resistant, high-strength, low-elastic-modulus and high-density well cementing cement, and relates to the technical field of well cementing materials in oil and gas development, and the high-temperature-resistant, high-strength, low-elastic-modulus and high-density well cementing cement comprises the following components by mass: 100 parts of oil well cement; 35-40 parts of a strength stabilizing material; 50 to 300 parts of a density regulator; 0.3 to 0.5 part of a high-strength toughening material; 0.8 to 1.5 parts of a flexible sealant; 0.2-0.4 part of a suspension stabilizer; 0.5-0.8 part of a dispersant; 2-3 parts of a fluid loss agent; 0.8 to 2.0 parts of a retarder; the oil well cement is mixed oil well cement of G-grade oil well cement and D-grade oil well cement in a mass ratio of 8: 2, and the high-strength toughening material is prepared by mixing modified carbon fibers, modified polyether-ether-ketone fibers, modified polyether sulfone fibers, beta-type silicon carbide whiskers and potassium hexatitanate whiskers in a mass ratio of (40-60): (15-25): (15-25): (5-8): (2-4). The flexible sealant is formed by mixing high-temperature-resistant modified polycarbonate and sulfonated asphalt according to the mass ratio of 8: 2, and self-toughening of set cement can be achieved, so that the prepared cement paste not only has good construction performance, but also has the characteristics of high strength and low elastic modulus under a high-temperature condition.
本发明公开了一种耐高温高强度低弹性模量高密度固井水泥，涉及油气开发中固井材料技术领域，按质量份数计包括以下组分：油井水泥100份；强度稳定材料35‑40份；密度调节剂50‑300份；高强增韧材料0.3‑0.5份；柔性密封剂0.8‑1.5份；悬浮稳定剂0.2‑0.4；分散剂0.5‑0.8；降失水剂2‑3份；缓凝剂0.8‑2.0份；油井水泥为G级油井水泥和D级油井水泥质量比为8：2的混合油井水泥，高强增韧材料为改性碳纤维、改性聚醚醚酮纤维、改性聚醚砜纤维、β型碳化硅晶须和六钛酸钾晶须按质量比40‑60：15‑25：15‑25：5‑8：2‑4混合而成，柔性密封剂为抗高温改性聚碳酸酯与磺化沥青按质量比为8：2混合而成，可实现水泥石自身增韧，使得制备的水泥浆不仅具备良好的施工性能，而且在高温条件下具备高强度低弹性模量的特性。
High-temperature-resistant, high-strength, low-elasticity-modulus and high-density well cementation cement
The invention discloses high-temperature-resistant, high-strength, low-elastic-modulus and high-density well cementing cement, and relates to the technical field of well cementing materials in oil and gas development, and the high-temperature-resistant, high-strength, low-elastic-modulus and high-density well cementing cement comprises the following components by mass: 100 parts of oil well cement; 35-40 parts of a strength stabilizing material; 50 to 300 parts of a density regulator; 0.3 to 0.5 part of a high-strength toughening material; 0.8 to 1.5 parts of a flexible sealant; 0.2-0.4 part of a suspension stabilizer; 0.5-0.8 part of a dispersant; 2-3 parts of a fluid loss agent; 0.8 to 2.0 parts of a retarder; the oil well cement is mixed oil well cement of G-grade oil well cement and D-grade oil well cement in a mass ratio of 8: 2, and the high-strength toughening material is prepared by mixing modified carbon fibers, modified polyether-ether-ketone fibers, modified polyether sulfone fibers, beta-type silicon carbide whiskers and potassium hexatitanate whiskers in a mass ratio of (40-60): (15-25): (15-25): (5-8): (2-4). The flexible sealant is formed by mixing high-temperature-resistant modified polycarbonate and sulfonated asphalt according to the mass ratio of 8: 2, and self-toughening of set cement can be achieved, so that the prepared cement paste not only has good construction performance, but also has the characteristics of high strength and low elastic modulus under a high-temperature condition.
本发明公开了一种耐高温高强度低弹性模量高密度固井水泥，涉及油气开发中固井材料技术领域，按质量份数计包括以下组分：油井水泥100份；强度稳定材料35‑40份；密度调节剂50‑300份；高强增韧材料0.3‑0.5份；柔性密封剂0.8‑1.5份；悬浮稳定剂0.2‑0.4；分散剂0.5‑0.8；降失水剂2‑3份；缓凝剂0.8‑2.0份；油井水泥为G级油井水泥和D级油井水泥质量比为8：2的混合油井水泥，高强增韧材料为改性碳纤维、改性聚醚醚酮纤维、改性聚醚砜纤维、β型碳化硅晶须和六钛酸钾晶须按质量比40‑60：15‑25：15‑25：5‑8：2‑4混合而成，柔性密封剂为抗高温改性聚碳酸酯与磺化沥青按质量比为8：2混合而成，可实现水泥石自身增韧，使得制备的水泥浆不仅具备良好的施工性能，而且在高温条件下具备高强度低弹性模量的特性。
High-temperature-resistant, high-strength, low-elasticity-modulus and high-density well cementation cement
一种耐高温高强度低弹性模量高密度固井水泥
DU JING (Autor:in) / ZHANG YANGYONG (Autor:in) / ZENG XUELING (Autor:in)
27.10.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
/
C09K
Materialien für Anwendungen, soweit nicht anderweitig vorgesehen
,
MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR
/
D06M
Behandeln von Fasern, Fäden, Garnen, Textilgut, Federn oder aus solchen Materialien hergestelltem Fasergut, soweit nicht anderweitig in Klasse D06 vorgesehen
,
TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
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