최소 단어 이상 선택하여야 합니다.
최대 10 단어까지만 선택 가능합니다.
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
NTIS 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
DataON 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Edison 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0096413 (2011-04-28) |
등록번호 | US-9080098 (2015-07-14) |
발명자 / 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 | 피인용 횟수 : 20 인용 특허 : 439 |
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 me
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.
1. A composite downhole article, comprising: at least one corrodible core member comprising a metallic first material that is corrodible in a wellbore fluid at a first corrosion rate; andat least one outer member disposed on the core member and comprising a second material that is corrodible in the
1. A composite downhole article, comprising: at least one corrodible core member comprising a metallic first material that is corrodible in a wellbore fluid at a first corrosion rate; andat 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, wherein the corrodible core member is substantially cylindrical and comprises a hollow sleeve disposed about a longitudinal axis and the outer member comprises a layer disposed on the core member. 2. The article of claim 1, wherein the composition gradient or the density gradient, or a combination thereof, of the first material extends from an outer portion proximate the outer member toward an inner portion away from the outer member. 3. The article of claim 2, wherein the composition gradient or the density gradient, or a combination thereof, comprises a decreasing amount or a decreasing density, or a combination thereof, of the first material from the inner portion to the outer portion. 4. The article of claim 3, wherein the composition gradient or the density gradient, or a combination thereof, of the first material in the core member varies continuously from the inner portion to the outer portion. 5. The article of claim 3, wherein the composition gradient or the density gradient, or a combination thereof, varies in discrete steps from the inner portion to the outer portion. 6. The article of claim 2, wherein the corrodible core member also comprises a composition gradient or a density gradient, or a combination thereof, of the second material in the corrodible core member from the outer portion proximate the outer member toward the inner portion. 7. The article of claim 1, further comprising an access point configured to provide access of the wellbore fluid to the core member in response to a wellbore condition. 8. The article of claim 7, wherein the access point comprises at least one of a thickness difference, a compositional difference or a density difference of the second material that is sufficient to provide access of the wellbore fluid to the core member in response to a wellbore condition. 9. The article of claim 1, wherein the first material comprises a powder metal compact comprising a substantially-continuous, cellular nanomatrix comprising a nanomatrix material; a plurality of dispersed particles comprising a particle core member material that comprises Mg, Al, Zn, Fe or Mn, alloys thereof, or a combination thereof, dispersed in the cellular nanomatrix; and bond layer extending throughout the cellular nanomatrix between the dispersed particles. 10. The article of claim 1, wherein the second material comprises a powder compact. 11. The article of claim 1, wherein the second material comprises a metal, polymer, ceramic, or a combination thereof. 12. The article of claim 1, wherein the at least one corrodible core member and the at least one outer member comprise a plurality of core members having a corresponding plurality of outer members disposed thereon, wherein the respective core members and associated outer members are nested within one another to form an alternating arrangement of core members and outer members. 13. A composite downhole article, comprising: at least one core member comprising a second material that is corrodible in a wellbore fluid at a second corrosion rate; andat least one corrodible outer member disposed on the core member and comprising a first material that is corrodible in the wellbore fluid at a first corrosion rate, wherein the corrodible outer 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. 14. The article of claim 13, wherein the corrodible outer member has a composition gradient of the first material from an outer portion proximate an outer surface toward an inner portion proximate the core member. 15. The article of claim 14, wherein the composition gradient of the first material comprises a decreasing amount of the first material from the outer portion to the inner portion. 16. The article of claim 15, wherein the composition gradient of the first material varies continuously from the outer portion to the inner portion. 17. The article of claim 15, wherein the composition gradient of the first material varies in discrete steps from the outer portion to the inner portion, each step having a substantially constant amount of the first material. 18. The article of claim 14, wherein the outer member also comprises a composition gradient of the second material in the outer member from the inner portion proximate the core member toward the outer portion, and the composition gradient of the second material comprises a decreasing amount of the second material from the inner portion toward the outer portion. 19. The article of claim 13, wherein the first material comprises a powder metal compact comprising a substantially-continuous, cellular nanomatrix comprising a nanomatrix material; a plurality of dispersed particles comprising a particle core member material that comprises Mg, Al, Zn, Fe or Mn, alloys thereof, or a combination thereof, dispersed in the cellular nanomatrix; and bond layer extending throughout the cellular nanomatrix between the dispersed particles. 20. The article of claim 13, wherein the second material comprises a powder compact. 21. The article of claim 13, wherein the second material comprises a metal, polymer, ceramic, or a combination thereof.
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