Invention Grant
- Patent Title: Method of treating subterranean formations with carboxylated guar derivatives
- Patent Title (中): 用羧化瓜尔胶衍生物处理地下地层的方法
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Application No.: US12505272Application Date: 2009-07-17
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Publication No.: US08030250B2Publication Date: 2011-10-04
- Inventor: Hong Sun , Frances DeBenedictis , Qi Qu
- Applicant: Hong Sun , Frances DeBenedictis , Qi Qu
- Applicant Address: US TX Houston
- Assignee: Baker Hughes Incorporated
- Current Assignee: Baker Hughes Incorporated
- Current Assignee Address: US TX Houston
- Agency: Jones & Smith, LLP
- Agent John Wilson Jones
- Main IPC: C09K8/68
- IPC: C09K8/68 ; E21B43/26
Abstract:
The production of hydrocarbons from a subterranean formation is enhanced by use of a well treatment fluid which contains a carboxylated guar which may be prepared by reacting a guar source and a derivatizing agent of the formula X(CH2)nCOOH or alkali salts thereof, wherein X is selected from the group consisting of —OSO2CH3; —OSO2C2H5; —OTs, —Br, and —I and n is between from 1 to 4. The intrinsic viscosity of the carboxylated guar in 2% KCl at 27° C. is at least 750 mL/g and the degree of substitution (DS) of the carboxylated guar is typically between from about 0.02 to about 0.15.
Public/Granted literature
- US20110015100A1 Method of Treating Subterranean Formations with Carboxylated Guar Derivatives Public/Granted day:2011-01-20
Information query
