A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
VINYL ALCOHOL-BASED POLYMER, AND CEMENT SLURRY USING THE SAME
To provide an additive for oil well cement, the additive having good fluid loss reduction performance and containing a vinyl alcohol-based polymer.SOLUTION: An additive for oil well cement contains a vinyl alcohol-based polymer which is a saponified copolymer of a vinyl ester-based monomer and a polyfunctional monomer, and which has a degree of saponification of 70-95 mol% and a viscosity average polymerization degree of 1,000-10,000.SELECTED DRAWING: None
【課題】フルイド・口ス低減性能が良好な、ビニルアルコール系重合体を含有する油井セメン卜用添加剤の提供。【解決手段】ビニルエステル系単量体と多官能性単量体との共重合体のケン化物であり、ケン化度が７０〜９５モル％、かつ、粘度平均重合度が１０００〜１００００であるビニルアルコール系重合体を含有する、油井セメント用添加剤。【選択図】なし
VINYL ALCOHOL-BASED POLYMER, AND CEMENT SLURRY USING THE SAME
To provide an additive for oil well cement, the additive having good fluid loss reduction performance and containing a vinyl alcohol-based polymer.SOLUTION: An additive for oil well cement contains a vinyl alcohol-based polymer which is a saponified copolymer of a vinyl ester-based monomer and a polyfunctional monomer, and which has a degree of saponification of 70-95 mol% and a viscosity average polymerization degree of 1,000-10,000.SELECTED DRAWING: None
【課題】フルイド・口ス低減性能が良好な、ビニルアルコール系重合体を含有する油井セメン卜用添加剤の提供。【解決手段】ビニルエステル系単量体と多官能性単量体との共重合体のケン化物であり、ケン化度が７０〜９５モル％、かつ、粘度平均重合度が１０００〜１００００であるビニルアルコール系重合体を含有する、油井セメント用添加剤。【選択図】なし
VINYL ALCOHOL-BASED POLYMER, AND CEMENT SLURRY USING THE SAME
ビニルアルコール系重合体及び該ビニルアルコール系重合体を用いたセメントスラリー
YAMASHITA AKIHIRO (author) / WATANABE KOSUKE (author)
2020-05-28
Patent
Electronic Resource
Japanese
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
/
C09K
Materialien für Anwendungen, soweit nicht anderweitig vorgesehen
,
MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR
/
E21B
EARTH OR ROCK DRILLING
,
Erd- oder Gesteinsbohren
| European Patent Office | 2016
| European Patent Office | 2024