Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
ADDITIVE FOR OIL WELL CEMENT, CEMENT COMPOSITION FOR OIL WELL AND CEMENT SLURRY FOR OIL WELL
To provide an additive for oil well cement that can satisfactorily prevent the fluid loss phenomenon.SOLUTION: An additive for oil well cement contains a polyvinyl alcohol that satisfies the following formula (1) and has a median size of 60-300 μm. 60≤viscosity of 4% aqueous solution [mPa s]×Log(saponification level [mol%])≤250 (1). The polyvinyl alcohol may have a clouding point of 30-70°C.SELECTED DRAWING: None
【課題】フルイド・ロス低減性能が良好な油井セメント用添加剤を提供すること。【解決手段】下記式（１）を満たし、メジアン径が６０～３００μｍであるポリビニルアルコールを含有する、油井セメント用添加剤。６０≦４％水溶液の粘度［ｍＰａ・ｓ］×Ｌｏｇ（鹸化度［モル％］）≦２５０・・・（１）上記ポリビニルアルコールの曇点は３０～７０℃であってもよい。【選択図】なし
ADDITIVE FOR OIL WELL CEMENT, CEMENT COMPOSITION FOR OIL WELL AND CEMENT SLURRY FOR OIL WELL
To provide an additive for oil well cement that can satisfactorily prevent the fluid loss phenomenon.SOLUTION: An additive for oil well cement contains a polyvinyl alcohol that satisfies the following formula (1) and has a median size of 60-300 μm. 60≤viscosity of 4% aqueous solution [mPa s]×Log(saponification level [mol%])≤250 (1). The polyvinyl alcohol may have a clouding point of 30-70°C.SELECTED DRAWING: None
【課題】フルイド・ロス低減性能が良好な油井セメント用添加剤を提供すること。【解決手段】下記式（１）を満たし、メジアン径が６０～３００μｍであるポリビニルアルコールを含有する、油井セメント用添加剤。６０≦４％水溶液の粘度［ｍＰａ・ｓ］×Ｌｏｇ（鹸化度［モル％］）≦２５０・・・（１）上記ポリビニルアルコールの曇点は３０～７０℃であってもよい。【選択図】なし
ADDITIVE FOR OIL WELL CEMENT, CEMENT COMPOSITION FOR OIL WELL AND CEMENT SLURRY FOR OIL WELL
油井セメント用添加剤、油井用セメント組成物及び油井用セメントスラリー
YAMASHITA AKIHIRO (Autor:in)
10.02.2022
Patent
Elektronische Ressource
Japanisch
Well cementation cement slurry composition and well cementation cement slurry
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