Downhole tools having controlled disintegration
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
E21B-029/02
E21B-029/00
E21B-034/16
출원번호
US-0472382
(2017-03-29)
등록번호
US-10167691
(2019-01-01)
발명자
/ 주소
Zhang, Zhihui
Xu, Zhiyue
Shyu, Goang-Ding
Perez, Juan Carlos Flores
출원인 / 주소
BAKER HUGHES, A GE COMPANY, LLC
대리인 / 주소
Cantor Colburn LLP
인용정보
피인용 횟수 :
0인용 특허 :
15
초록▼
A multilayered unit includes a core comprising an energetic material and an activator; a support layer disposed on the core; and a protective layer disposed on the support layer, wherein the support layer and the protective layer each independently comprises a polymeric material, a metallic material
A multilayered unit includes a core comprising an energetic material and an activator; a support layer disposed on the core; and a protective layer disposed on the support layer, wherein the support layer and the protective layer each independently comprises a polymeric material, a metallic material, or a combination comprising at least one of the foregoing, provided that the support layer is compositionally different from the protective layer. The multilayered unit can be embedded in a component, attached to a component, or disposed between two components of a downhole assembly. The downhole assembly containing the multilayered unit has controlled disintegration in a downhole environment.
대표청구항▼
1. A downhole article comprising: a matrix; anda multilayered unit embedded in the matrix, the multilayered unit including: a core comprising an energetic material and an activator;a support layer disposed on the core; anda protective layer disposed on the support layer,wherein the support layer com
1. A downhole article comprising: a matrix; anda multilayered unit embedded in the matrix, the multilayered unit including: a core comprising an energetic material and an activator;a support layer disposed on the core; anda protective layer disposed on the support layer,wherein the support layer comprises a first material and the protective layer comprises a second material, the first material and the second material each independently comprises a polymeric material, a metallic material, or a combination comprising at least one of the foregoing, provided that the first material is different from the second material. 2. The downhole article of claim 1, wherein the multilayered unit has at least one stress concentration location. 3. The downhole article of claim 1, the matrix has a pre-crack around the multilayered unit. 4. The downhole article of claim 1, wherein the activator is a device that is effective to generate spark, electrical current, or a combination thereof to active the energetic material. 5. The downhole article of claim 1, wherein the energetic material comprises a thermite, a thermate, a solid propellant fuel, or a combination comprising at least one of the foregoing. 6. The downhole article of claim 1, wherein at least one of the first and the second materials comprises the metallic material, and the metallic material comprises Zn, Mg, Al, Mn, iron, an alloy thereof, or a combination comprising at least one of the foregoing. 7. The downhole article of claim 1, wherein at least one of the first and second materials comprises the polymeric material, and the polymeric material comprises a polyethylene glycol, a polypropylene glycol, a polyglycolic acid, a polycaprolactone, a polydioxanone, a polyhydroxyalkanoate, a polyhydroxybutyrate, a copolymer thereof, or a combination comprising at least one of the foregoing. 8. The downhole article of claim 1, wherein the support layer comprises the metallic material; and the protective layer comprises the polymeric material. 9. The downhole article of claim 1, wherein the support layer comprises the polymeric material; and the protective layer comprises the metallic material. 10. The downhole article of claim 1, wherein the core is present in an amount of 5 to 80 vol %, the support layer is present in an amount of 20 to 95 vol %, and the protective layer is present in an amount of 0.1 to 20 vol %, each based on the total volume of the multilayered unit. 11. The downhole article of claim 1, wherein the matrix is formed from a corrodible metallic material. 12. The downhole article of claim 11, wherein the downhole article comprises a plurality of the multilayered units embedded in the matrix. 13. A downhole assembly comprising the downhole article of claim 1. 14. A method of controllably removing a downhole article, the method comprising: disposing the downhole article of claim 1 in a downhole environment;performing a downhole operation;activating the energetic material; anddisintegrating the downhole article. 15. The method of claim 14, wherein disintegrating the downhole article comprises breaking the downhole article into a plurality of discrete pieces; and the method further comprises corroding the discrete pieces in a downhole fluid. 16. The method of claim 14, wherein activating the energetic material comprises triggering the activator by a preset timer, a characteristic acoustic wave generated by a perforation from a following stage, a pressure signal from fracking fluid, an electrochemical signal interacting with a wellbore fluid, or a combination comprising at least one of the foregoing. 17. A downhole assembly comprising a first component, a second component, and a multilayered unit disposed between the first and second components, the multilayered unit including: a core comprising an energetic material and an activator;a support layer disposed on the core; anda protective layer disposed on the support layer, wherein the support layer comprises a first material and the protective layer comprises a second material, each of the first and second materials independently comprises a polymeric material, a metallic material, or a combination comprising at least one of the foregoing, provided that the first material is different from the second material. 18. The downhole article of claim 17, wherein the activator is a device that is effective to generate spark, electrical current, or a combination thereof to active the energetic material. 19. The downhole assembly of claim 17, wherein the first component, the second component, or both comprise Zn, Mg, Al, Mn, an alloy thereof, or a combination comprising at least one of the foregoing. 20. The downhole assembly of claim 17, wherein the multilayered unit has at least one stress concentration location. 21. The downhole assembly of claim 17, wherein at least one of the first and second materials comprises the polymeric material, the polymeric material comprises a polyethylene glycol, a polypropylene glycol, a polyglycolic acid, a polycaprolactone, a polydioxanone, a polyhydroxyalkanoate, a polyhydroxybutyrate, a copolymer thereof, or a combination comprising at least one of the foregoing. 22. A method of controllably removing a downhole assembly, the method comprising: disposing the downhole assembly of claim 17 in a downhole environment;performing a downhole operation;activating the energetic material in the multilayered unit; anddisintegrating the downhole assembly. 23. The method of claim 22, wherein disintegrating the downhole assembly comprises breaking the downhole assembly into a plurality of discrete pieces; and the method further comprises corroding the discrete pieces in a downhole fluid. 24. The method of claim 22, wherein activating the energetic material comprises triggering the activator by a preset timer, a characteristic acoustic wave generated by a perforation from a following stage, a pressure signal from fracking fluid, an electrochemical signal interacting with a wellbore fluid, or a combination comprising at least one of the foregoing.
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