发明授权
US07795189B2 Zirconium-hydroxy alkylated amine-hydroxy carboxylic acid cross-linking composition for use with high pH polymer solutions
有权
用于高pH聚合物溶液的锆 - 羟基烷基化胺 - 羟基羧酸交联组合物
- 专利标题： Zirconium-hydroxy alkylated amine-hydroxy carboxylic acid cross-linking composition for use with high pH polymer solutions
- 专利标题（中）： 用于高pH聚合物溶液的锆 - 羟基烷基化胺 - 羟基羧酸交联组合物
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申请号： US12005692申请日： 2007-12-28
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公开(公告)号： US07795189B2公开(公告)日： 2010-09-14
- 发明人: Donald Edward Putzig
- 申请人： Donald Edward Putzig
- 专利权人： E.I. du Pont de Nemours and Company
- 当前专利权人： E.I. du Pont de Nemours and Company
- 代理商 Kathryn M. Sanchez
- 主分类号： C01G25/00
- IPC分类号： C01G25/00 ; C07C59/08 ; C09K8/60
摘要：
A process to prepare a solution of zirconium-hydroxyalkylated diamine-lactic acid complex is disclosed and use of the solution in oil field applications such as hydraulic fracturing and plugging of permeable zones. The process comprises contacting an alcohol solution of a zirconium complex with an hydroxyalkylated diamine, then with lactic acid to produce a solution of zirconium-hydroxyalkylated diamine-lactic acid complex. The solution is particularly suitable for use in a cross-linking composition in hydraulic fracturing and plugging of permeable zones of subterranean formations at pH of 10 or greater and at temperatures of 275° F. (135° C.) and higher in the formation.
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