Cutting element for a drill bit used in drilling subterranean formations
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
E21B-010/573
C22C-026/00
E21B-010/567
출원번호
US-0832823
(2010-07-08)
등록번호
US-8978788
(2015-03-17)
발명자
/ 주소
Vempati, Chaitanya K.
Patel, Suresh G.
Oldham, Jack Thomas
Fuselier, Danielle M.
Powers, Jim
Lyons, Nicholas J.
출원인 / 주소
Baker Hughes Incorporated
대리인 / 주소
TraskBritt
인용정보
피인용 횟수 :
5인용 특허 :
148
초록▼
A cutting element for use in a drill bit for drilling subterranean formations includes a cutting body having a substrate including a rear surface, an upper surface, and a peripheral side surface extending between the rear surface and the upper surface, and a superabrasive layer overlying the upper s
A cutting element for use in a drill bit for drilling subterranean formations includes a cutting body having a substrate including a rear surface, an upper surface, and a peripheral side surface extending between the rear surface and the upper surface, and a superabrasive layer overlying the upper surface of the substrate. The cutting element further includes a sleeve surrounding the peripheral side surface of the cutting body and comprising a superabrasive layer bonded to an external surface of the sleeve.
대표청구항▼
1. A cutting element for use in a drill bit for drilling subterranean formations, comprising: a cutting body, comprising: a substrate comprising a rear surface, an upper surface, and a peripheral side surface extending from the rear surface to the upper surface; anda first superabrasive layer overly
1. A cutting element for use in a drill bit for drilling subterranean formations, comprising: a cutting body, comprising: a substrate comprising a rear surface, an upper surface, and a peripheral side surface extending from the rear surface to the upper surface; anda first superabrasive layer overlying the upper surface of the substrate, the first superabrasive layer having a rear surface adjacent the upper surface of the substrate, an upper surface, and a peripheral side surface extending from the rear surface to the upper surface;wherein the cutting body comprises at least one peripheral side surface comprising the peripheral side surface of the substrate and the peripheral side surface of the first superabrasive layer;anda sleeve comprising: a sleeve body comprising a rear surface, an upper surface, a peripheral side surface extending from the rear surface to the upper surface, and an interior side surface extending from the rear surface to the upper surface; anda second superabrasive layer bonded to the upper surface of the sleeve body, the second superabrasive layer having a rear surface adjacent the upper surface of the sleeve body, an upper surface, a peripheral side surface extending from the rear surface to the upper surface, and an interior side surface extending from the rear surface to the upper surface;wherein the sleeve comprises at least one interior side surface comprising the interior side surface of the sleeve body and the interior side surface of the second superabrasive layer, the at least one interior side surface of the sleeve surrounding the cutting body such that at least one of a gap and an interface material is disposed directly radially between the first superabrasive layer and the second superabrasive layer;wherein the upper surface of the first superabrasive layer is coplanar with or recessed below the upper surface of the second superabrasive layer. 2. The cutting element of claim 1, wherein the substrate comprises a metal or a metal alloy material. 3. The cutting element of claim 1, wherein the substrate consists essentially of tungsten carbide. 4. The cutting element of claim 1, wherein the second superabrasive layer comprises a material selected from the group of materials consisting of diamond, boron nitride, fullerenes, and a combination thereof. 5. The cutting element of claim 1, wherein the cutting body further comprises a third superabrasive layer separate from the first superabrasive layer. 6. The cutting element of claim 5, wherein the first and second superabrasive layers are concentrically oriented to each other. 7. The cutting element of claim 1, wherein the cutting body further comprises a third superabrasive layer overlying the upper surface of the substrate and an arresting layer between the first superabrasive layer and the third superabrasive layer. 8. The cutting element of claim 7, wherein the arresting layer comprises a material having a Mohs hardness less than Mohs hardnesses of the first and third superabrasive layers. 9. The cutting element of claim 1, wherein the interface material comprises a metal or a metal alloy material. 10. The cutting element of claim 1, wherein the interface material comprises a material selected from the group of materials consisting of carbides, nitrides, borides, and oxides. 11. The cutting element of claim 1, wherein the sleeve body comprises a material different than a material of the substrate. 12. The cutting element of claim 1, wherein the second superabrasive layer comprises a chamfered surface extending at an angle to the upper surface of the second superabrasive layer. 13. The cutting element of claim 1, wherein the cutting element is mounted to a body of a rotary drill bit. 14. A cutting element for use in a drill bit for drilling subterranean formations, comprising: a cutting body, comprising: a substrate comprising a rear surface, an upper surface, and a peripheral side surface extending from the rear surface to the upper surface;a first superabrasive layer comprising a rear surface, a top surface, and a peripheral side surface extending from the rear surface to the top surface, the rear surface overlying the upper surface of the substrate;anda sleeve surrounding the peripheral side surface of the substrate and the first superabrasive layer, the sleeve comprising: a sleeve body comprising a rear surface and an upper surface;a second superabrasive layer comprising a rear surface and an upper surface, the rear surface of the second superabrasive layer bonded to the upper surface of the sleeve body; andan interior side surface extending from the rear surface of the sleeve body to the top surface of the second superabrasive layer;wherein the interior side surface of the sleeve at least partially surrounds the cutting body such that at least one of a gap and an interface material is disposed directly radially between the first superabrasive layer and the second superabrasive layer; andwherein the upper surface of the first superabrasive layer is coplanar with or recessed below the upper surface of the second superabrasive layer. 15. The cutting element of claim 14, wherein the interface material comprises a material having a Mohs hardness not greater than a Mohs hardness of the substrate. 16. The cutting element of claim 15, wherein the interface material comprises a material selected from the group of materials consisting of carbides, nitrides, borides, and oxides. 17. The cutting element of claim 16, wherein the interface material comprises a carbide material. 18. The cutting element of claim 15, wherein the interface material comprises abrasive grit contained within a matrix material. 19. The cutting element of claim 14, wherein the cutting element is mounted to a body of a rotary drill bit. 20. A cutting element for use in a drill bit for drilling subterranean formations, comprising: a cutting body, comprising: a substrate comprising a rear surface, an upper surface, and a peripheral side surface extending from the rear surface to the upper surface; anda first superabrasive layer comprising a rear surface, a top surface, and a peripheral side surface extending from the rear surface to the top surface, the rear surface overlying the upper surface of the substrate; anda sleeve comprising: a sleeve body comprising a rear surface, an upper surface, and an interior side surface extending from the rear surface to the upper surface; anda second superabrasive layer comprising a rear surface, a top surface, and an interior side surface extending from the rear surface to the top surface, the rear surface overlying and bonded to the upper surface of the sleeve body;wherein the interior side surfaces of the sleeve body and the second superabrasive layer are each at least partially surrounding the cutting body such that at least one of a gap and an interface material is disposed directly radially between the first superabrasive layer and the second superabrasive layer;wherein the upper surface of the first superabrasive layer is coplanar with or recessed below the upper surface of the second superabrasive layer. 21. The cutting element of claim 20, wherein the second superabrasive layer has a chamfered surface angled with respect to the top surface of the second superabrasive layer. 22. The cutting element of claim 20, wherein the cutting element is mounted to a body of a rotary drill bit.
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