Invention Grant
- Patent Title: Polysaccharide based scale inhibitor
- Patent Title (中): 多糖类阻垢剂
-
Application No.: US12151560Application Date: 2008-07-07
-
Publication No.: US08215398B2Publication Date: 2012-07-10
- Inventor: Subramanian Kesavan , Gary Woodward , Floryan Decampo
- Applicant: Subramanian Kesavan , Gary Woodward , Floryan Decampo
- Applicant Address: FR Aubervilliers
- Assignee: Rhodia Operations
- Current Assignee: Rhodia Operations
- Current Assignee Address: FR Aubervilliers
- Agency: Hunton & Williams, LLP
- Main IPC: E21B21/00
- IPC: E21B21/00

Abstract:
A depolymerized-carboxyalkyl polysaccharide formed by de polymerizing a polysaccharide having from 0.5 to 3.0 degrees of substitution and reducing the molecular weight of said polysaccharide before or after said depolymerizing provides a biodegradable scale inhibitor useful to prevent deposition of scale comprising, for example, calcium, barium, sulfate and salts thereof. The depolymerized carboxyalkyl polysaccharide is particularly useful in off shore oil production squeeze treatments and in the treatment of scale formed in industrial water treatment.
Public/Granted literature
- US20080277620A1 Polysaccharide based scale inhibitor Public/Granted day:2008-11-13
Information query