Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Oil well cement paste retarder as well as preparation and application thereof
The invention discloses an oil well cement paste retarder. The oil well cement paste retarder is prepared by polymerizing 100 to 120 parts by mass of 2-acrylamide-2-methylpropanesulfonic acid and 9 to 15 parts by mass of azelaic acid. The invention also discloses a preparation method and application thereof. The ultrahigh-temperature-resistant low-dilution oil well cement retarder provided by the invention is used for deep wells and ultra-deep wells, is not obviously diluted when the temperature is higher than 220 DEG C, has certain salt resistance when the concentration of compound salts (with the concentration of 30%) such as potassium chloride-sodium oxalate is close to the saturation concentration, effectively prolongs the thickening time, resists large temperature difference, meets the requirement for top strength, and has a wide application prospect. Under the condition of large temperature difference of 80 DEG C, the top strength is not influenced by thickening time, flocculation and sedimentation are avoided, and the well cementation requirements of deep wells and ultra-deep wells can be met.
本发明公开一种油井水泥浆缓凝剂，所述油井水泥浆缓凝剂由100‑120质量份2‑丙烯酰胺‑2‑甲基丙磺酸和9‑15质量份壬二酸聚合而成。本发明还公开其制备和应用。本发明提供的抗超高温低稀释性的油井水泥缓凝剂，用于深井超深井，在温度高于220℃时候无明显稀释，且在氯化钾‑草酸钠盐等复核盐类(浓度30％)接近饱和浓度时，具有一定的耐盐性能，有效延长稠化时间，耐大温差，满足顶部强度需求，在大温差80℃条件下，顶部强度不受稠化时间影响，无絮凝无沉降，能够满足深井超深井固井需求。
Oil well cement paste retarder as well as preparation and application thereof
The invention discloses an oil well cement paste retarder. The oil well cement paste retarder is prepared by polymerizing 100 to 120 parts by mass of 2-acrylamide-2-methylpropanesulfonic acid and 9 to 15 parts by mass of azelaic acid. The invention also discloses a preparation method and application thereof. The ultrahigh-temperature-resistant low-dilution oil well cement retarder provided by the invention is used for deep wells and ultra-deep wells, is not obviously diluted when the temperature is higher than 220 DEG C, has certain salt resistance when the concentration of compound salts (with the concentration of 30%) such as potassium chloride-sodium oxalate is close to the saturation concentration, effectively prolongs the thickening time, resists large temperature difference, meets the requirement for top strength, and has a wide application prospect. Under the condition of large temperature difference of 80 DEG C, the top strength is not influenced by thickening time, flocculation and sedimentation are avoided, and the well cementation requirements of deep wells and ultra-deep wells can be met.
本发明公开一种油井水泥浆缓凝剂，所述油井水泥浆缓凝剂由100‑120质量份2‑丙烯酰胺‑2‑甲基丙磺酸和9‑15质量份壬二酸聚合而成。本发明还公开其制备和应用。本发明提供的抗超高温低稀释性的油井水泥缓凝剂，用于深井超深井，在温度高于220℃时候无明显稀释，且在氯化钾‑草酸钠盐等复核盐类(浓度30％)接近饱和浓度时，具有一定的耐盐性能，有效延长稠化时间，耐大温差，满足顶部强度需求，在大温差80℃条件下，顶部强度不受稠化时间影响，无絮凝无沉降，能够满足深井超深井固井需求。
Oil well cement paste retarder as well as preparation and application thereof
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) / XIA BOYI (Autor:in) / XIAO SHIJIE (Autor:in) / ZHANG TIEMING (Autor:in) / QIU XIAOFANG (Autor:in) / ZHAO SHUHAI (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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