发明名称 |
METHOD OF MAKING AND USING A FUNCTIONALLY GRADIENT COMPOSITE TOOL |
摘要 |
A method of making a composite downhole article is disclosed. The method include forming at least one corrodible core member comprising a first material that is corrodible in a wellbore fluid at a first corrosion rate; and disposing at least one outer member on the core member, the outer member 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. A method of using a composite downhole article is also disclosed. The method includes forming a composite downhole article as described above; using the article to perform a first wellbore operation; exposing the article to the wellbore fluid; and selectively corroding the second corrodible member. |
申请公布号 |
CA2833958(C) |
申请公布日期 |
2016.04.12 |
申请号 |
CA20122833958 |
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 |
主分类号 |
E21B21/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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