Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
ADDITIVE FOR OIL WELL CEMENT, AND CEMENT COMPOSITION AND CEMENT SLURRY BOTH INCLUDING SAID ADDITIVE FOR OIL WELL CEMENT
Provided is a PVA-containing additive for oil well cement superior in fluid loss-reducing property. Specifically, provided is an additive for oil well cement, the additive containing polyvinyl alcohol having a saponification value of 75 to 85 mol % and a viscosity-average polymerization degree of 2,800 to 4,500. Also provided are a cement composition containing the additive for oil well cement in an amount of 0.01 to 30% bwoc and a cement slurry containing the additive for oil well cement in an amount of 0.01 to 30% bwoc.
ADDITIVE FOR OIL WELL CEMENT, AND CEMENT COMPOSITION AND CEMENT SLURRY BOTH INCLUDING SAID ADDITIVE FOR OIL WELL CEMENT
Provided is a PVA-containing additive for oil well cement superior in fluid loss-reducing property. Specifically, provided is an additive for oil well cement, the additive containing polyvinyl alcohol having a saponification value of 75 to 85 mol % and a viscosity-average polymerization degree of 2,800 to 4,500. Also provided are a cement composition containing the additive for oil well cement in an amount of 0.01 to 30% bwoc and a cement slurry containing the additive for oil well cement in an amount of 0.01 to 30% bwoc.
ADDITIVE FOR OIL WELL CEMENT, AND CEMENT COMPOSITION AND CEMENT SLURRY BOTH INCLUDING SAID ADDITIVE FOR OIL WELL CEMENT
ADDITIV FÜR ÖLBOHRLOCHZEMENT UND ZEMENTZUSAMMENSETZUNG SOWIE ZEMENTAUFSCHLÄMMUNG MIT BESAGTEM ADDITIV FÜR ÖLBOHRLOCHZEMENT
ADDITIF POUR CIMENT DE PUITS DE PÉTROLE, ET COMPOSITION DE CIMENT ET SUSPENSION DE CIMENT COMPRENANT TOUTES LES DEUX LEDIT ADDITIF POUR CIMENT DE PUITS DE PÉTROLE
TAMAI HIROSHI (Autor:in)
22.12.2021
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
/
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
/
C08L
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
,
Massen auf Basis makromolekularer Verbindungen
/
C09K
Materialien für Anwendungen, soweit nicht anderweitig vorgesehen
,
MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR
| Europäisches Patentamt | 2021
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ADDITIVE FOR OIL WELL CEMENT AND CEMENT SLURRY USING SAID ADDITIVE FOR OIL WELL CEMENT
| Europäisches Patentamt | 2020