Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Neutral ultrahigh-temperature-resistant low-dilution oil well cement paste retarder as well as preparation and application thereof
The invention discloses a neutral oil well cement retarder with ultrahigh temperature resistance and low dilution property, which is formed by polymerizing 2-acrylamide-2-methylpropanesulfonic acid, itaconic acid and imidazolidone, the mass parts of the 2-acrylamide-2-methylpropanesulfonic acid, the itaconic acid and the imidazolidinone are respectively 120 to 150 parts of the 2-acrylamide-2-methylpropanesulfonic acid, 28 to 38 parts of the itaconic acid and 5 to 10 parts of the imidazolidinone. The invention also provides a preparation method of the neutral ultrahigh-temperature-resistant low-dilution oil well cement retarder. The neutral ultrahigh-temperature-resistant low-dilution oil well cement retarder is prepared by the method. The neutral ultra-high-temperature-resistant low-dilution oil well cement retarder provided by the invention is used for deep wells and ultra-deep wells, and has the advantages of salt resistance, effective prolonging of thickening time, large temperature difference resistance, meeting of top strength requirements, neutral pH, meeting of environmental protection requirements, no thickening at low temperature, no flocculation at high temperature and no sedimentation at high temperature when being used for deep wells and ultra-deep wells at the temperature of 240 DEG C or above; and well cementation requirements of deep wells and ultra-deep wells can be met.
本发明公开一种中性抗超高温低稀释性油井水泥缓凝剂，所述中性抗超高温低稀释性油井水泥缓凝剂由2‑丙烯酰胺‑2‑甲基丙磺酸、依康酸和咪唑烷酮聚合而成，其质量份分别为120‑150份2‑丙烯酰胺‑2‑甲基丙磺酸、28‑38份依康酸和5‑10份咪唑烷酮。本发明还提供了一种中性抗超高温低稀释性油井水泥缓凝剂制备方法，由该方法制备中性抗超高温低稀释性油井水泥缓凝剂。本发明提供的中性抗超高温低稀释性油井水泥缓凝剂，用于深井和超深井，在温度240℃以上时，具有耐盐性能，有效延长稠化时间，耐大温差，满足顶部强度需求，pH显中性，符合环保要求，且低温不增稠高温无絮凝无沉降，能够满足深井和超深井固井的需求。
Neutral ultrahigh-temperature-resistant low-dilution oil well cement paste retarder as well as preparation and application thereof
The invention discloses a neutral oil well cement retarder with ultrahigh temperature resistance and low dilution property, which is formed by polymerizing 2-acrylamide-2-methylpropanesulfonic acid, itaconic acid and imidazolidone, the mass parts of the 2-acrylamide-2-methylpropanesulfonic acid, the itaconic acid and the imidazolidinone are respectively 120 to 150 parts of the 2-acrylamide-2-methylpropanesulfonic acid, 28 to 38 parts of the itaconic acid and 5 to 10 parts of the imidazolidinone. The invention also provides a preparation method of the neutral ultrahigh-temperature-resistant low-dilution oil well cement retarder. The neutral ultrahigh-temperature-resistant low-dilution oil well cement retarder is prepared by the method. The neutral ultra-high-temperature-resistant low-dilution oil well cement retarder provided by the invention is used for deep wells and ultra-deep wells, and has the advantages of salt resistance, effective prolonging of thickening time, large temperature difference resistance, meeting of top strength requirements, neutral pH, meeting of environmental protection requirements, no thickening at low temperature, no flocculation at high temperature and no sedimentation at high temperature when being used for deep wells and ultra-deep wells at the temperature of 240 DEG C or above; and well cementation requirements of deep wells and ultra-deep wells can be met.
本发明公开一种中性抗超高温低稀释性油井水泥缓凝剂，所述中性抗超高温低稀释性油井水泥缓凝剂由2‑丙烯酰胺‑2‑甲基丙磺酸、依康酸和咪唑烷酮聚合而成，其质量份分别为120‑150份2‑丙烯酰胺‑2‑甲基丙磺酸、28‑38份依康酸和5‑10份咪唑烷酮。本发明还提供了一种中性抗超高温低稀释性油井水泥缓凝剂制备方法，由该方法制备中性抗超高温低稀释性油井水泥缓凝剂。本发明提供的中性抗超高温低稀释性油井水泥缓凝剂，用于深井和超深井，在温度240℃以上时，具有耐盐性能，有效延长稠化时间，耐大温差，满足顶部强度需求，pH显中性，符合环保要求，且低温不增稠高温无絮凝无沉降，能够满足深井和超深井固井的需求。
Neutral ultrahigh-temperature-resistant low-dilution oil well cement paste retarder as well as preparation and application thereof
中性抗超高温低稀释性油井水泥浆缓凝剂及其制备和应用
ZHANG LI (Autor:in) / LUO XINHU (Autor:in) / MA ZHIHE (Autor:in) / SUN BAOYU (Autor:in) / WANG GUOTAO (Autor:in) / XIA BOYI (Autor:in) / XIAO SHIJIE (Autor:in) / ZHANG TIEMING (Autor:in) / TAN YAO (Autor:in) / DU FU (Autor:in)
10.01.2025
Patent
Elektronische Ressource
Chinesisch
IPC:
C08F
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
,
Makromolekulare Verbindungen, erhalten durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind
/
C04B
Kalk
,
LIME
/
C09K
Materialien für Anwendungen, soweit nicht anderweitig vorgesehen
,
MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR
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