发明名称 |
FUNCTIONALLY GRADIENT COMPOSITE ARTICLE |
摘要 |
A composite downhole article is disclosed. The article is selectively corrodible in a wellbore fluid. The article includes at least one corrodible core member comprising a first material that is corrodible in a wellbore fluid at a first corrosion rate. The article also includes at least one outer member disposed on the core member and comprising a second material that is corrodible in the wellbore fluid at a second corrosion rate, wherein the corrodible core member has a composition gradient or a density gradient, or a combination thereof, and wherein the first corrosion rate is substantially greater than the second corrosion rate. |
申请公布号 |
CA2833981(C) |
申请公布日期 |
2016.07.26 |
申请号 |
CA20122833981 |
申请日期 |
2012.04.25 |
申请人 |
BAKER HUGHES INCORPORATED |
发明人 |
XU, ZHIYUE;JOHNSON, MICHAEL |
分类号 |
E21B21/08;E21B41/02;E21B43/22 |
主分类号 |
E21B21/08 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|