Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Composition, preparation and application of retarder for ultrahigh-temperature well cementation
The invention relates to composition, preparation and application of a retarder for ultrahigh-temperature well cementation and well cementation cement paste. The synthetic monomers of the high-temperature retarder comprise 2-propenylamido-2-methylpropanesulfonic acid (AMPS), acrylic acid (AA), N, N-dimethylacrylamide (DMAA) and vinyl phosphonic acid (VPA). The high-temperature retarder comprises a constitutional unit A as shown in a formula 1, a constitutional unit B as shown in a formula 2, a constitutional unit C as shown in a formula 3 and a constitutional unit D as shown in a formula 4. The ultrahigh-temperature retarder is stable in chemical performance, can resist the temperature of 250 DEG C, has the high-temperature-resistant characteristic, does not affect the sedimentation stability of cement paste at the high temperature, can remarkably prolong the thickening time of the cement paste at the high temperature, and has high early strength at the low temperature; and the problem that the retarding effect is reduced due to serious sedimentation of cement slurry at high temperature is effectively solved, and the well cementation construction quality and safety can be guaranteed. # imgabs0 #
本发明涉及一种超高温固井用缓凝剂的组成、制备及应用和固井水泥浆。该高温缓凝剂合成单体有：2‑丙烯基酰胺基‑2‑甲基丙磺酸(AMPS)、丙烯酸(AA)、N,N‑二甲基丙烯酰胺(DMAA)、乙烯基膦酸(VPA)。高温缓凝剂含有式1所示的构成单元A、式2所示的构成单元B、式3所示的构成单元C和式4所示的构成单元D。本发明的超高温缓凝剂化学性能稳定，耐温可达250℃，具有耐高温特性的同时不影响水泥浆在高温下的沉降稳定性，能够显著延长高温下水泥浆的稠化时间，在低温下水泥石具有较高的早期强度，并且有效解决了因高温下水泥浆沉降严重导致的缓凝效果降低的问题，能够保证固井施工质量和安全。#imgabs0#
Composition, preparation and application of retarder for ultrahigh-temperature well cementation
The invention relates to composition, preparation and application of a retarder for ultrahigh-temperature well cementation and well cementation cement paste. The synthetic monomers of the high-temperature retarder comprise 2-propenylamido-2-methylpropanesulfonic acid (AMPS), acrylic acid (AA), N, N-dimethylacrylamide (DMAA) and vinyl phosphonic acid (VPA). The high-temperature retarder comprises a constitutional unit A as shown in a formula 1, a constitutional unit B as shown in a formula 2, a constitutional unit C as shown in a formula 3 and a constitutional unit D as shown in a formula 4. The ultrahigh-temperature retarder is stable in chemical performance, can resist the temperature of 250 DEG C, has the high-temperature-resistant characteristic, does not affect the sedimentation stability of cement paste at the high temperature, can remarkably prolong the thickening time of the cement paste at the high temperature, and has high early strength at the low temperature; and the problem that the retarding effect is reduced due to serious sedimentation of cement slurry at high temperature is effectively solved, and the well cementation construction quality and safety can be guaranteed. # imgabs0 #
本发明涉及一种超高温固井用缓凝剂的组成、制备及应用和固井水泥浆。该高温缓凝剂合成单体有：2‑丙烯基酰胺基‑2‑甲基丙磺酸(AMPS)、丙烯酸(AA)、N,N‑二甲基丙烯酰胺(DMAA)、乙烯基膦酸(VPA)。高温缓凝剂含有式1所示的构成单元A、式2所示的构成单元B、式3所示的构成单元C和式4所示的构成单元D。本发明的超高温缓凝剂化学性能稳定，耐温可达250℃，具有耐高温特性的同时不影响水泥浆在高温下的沉降稳定性，能够显著延长高温下水泥浆的稠化时间，在低温下水泥石具有较高的早期强度，并且有效解决了因高温下水泥浆沉降严重导致的缓凝效果降低的问题，能够保证固井施工质量和安全。#imgabs0#
Composition, preparation and application of retarder for ultrahigh-temperature well cementation
超高温固井用缓凝剂的组成、制备及应用
WANG CHENGWEN (Autor:in) / GUO GUANGYU (Autor:in) / CHEN ZEHUA (Autor:in) / LIU JINGPING (Autor:in) / GUO XINYANG (Autor:in)
22.09.2023
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
| Europäisches Patentamt | 2024
| Europäisches Patentamt | 2024
| Europäisches Patentamt | 2023
Micro-expansion retarder for well cementation of long sealing section
| Europäisches Patentamt | 2020
| Europäisches Patentamt | 2020