| 摘要 |
A method for degrading a downhole article includes exposing the downhole article comprising a controlled electrolytic material to a composition that comprises a reducing agent. The method also includes contacting the downhole article with the reducing agent to degrade the downhole article. Additionally, a composition for degrading a downhole article includes water, chelant, metal ions, and a reducing agent that includes ascorbic acid, erythorbic acid, a derivative thereof, a salt thereof, or a combination thereof. |
| 主权项 |
1. A method for degrading a downhole article, comprising:
introducing a composition comprising a reducing agent of formula 2 into a borehole; and removing, by the reducing agent, a metal from the downhole article to degrade the downhole article, wherein R5 is a group selected from a single bond, alkylene, alkyleneoxy, fluoroalkylene, cycloalkylene, heterocycloalkylene, arylene, aralkylene, aryleneoxy, heteroarylene, heteroaralkylene, alkenylene, alkynylene, or amide, and R6 is a functional group selected from hydrogen, hydroxyl, alkyl, alkoxy, fluoroalkyl, cycloalkyl, heterocycloalkyl, cycloalkyloxy, aryl, aralkyl, aryloxy, aralkyloxy, heteroaryl, heteroaralkyl, alkenyl, alkynyl, NH2, amine, alkyleneamine, aryleneamine, or alkenyleneamine. |
