Patent US3592540A successfully refreshed from Google Patents.
Patent US5351772A successfully refreshed from Google Patents.
US5351772A
Expired / Lapsed
US
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Polycrystalline diamond cutting element
Assignee: Baker Hughes Holdings LLC
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Filing: 1993-02-10
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Granted: 1994-10-04
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Expires: 2013-02-10
Abstract
Abstract A substantially polycrystalline diamond compact cutting element for drilling subterranean formations. The cutting element includes a cemented carbide substrate having radially extending raised lands on one side thereof, to and over which is formed and bonded a polycrystalline diamond table.
Inventors
- 👤 Redd H. Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:31
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/46; E21B10/56; E21B10/567; E21B10/573; E21B10/5735
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
117 words
A cutting element for use on a rotary drag bit for drilling subterranean formations, said cutting element comprising: a substrate having at least one substantially planar side and an arcuate perimeter comprising at least a segment of a circle, and further including a plurality of upwardly-projecting lands located on said at least one substantially planar side adjacent the perimeter of said substrate, said lands extending radially inwardly from said arcuate perimeter toward the location of the center of said circular segment; and a table comprising polycrystalline superhard material bonded to said substrate on said at least one substantially planar side thereof, extending between said lands and having a depth greater than the height of said upwardly-projecting lands.
Claim 2
Dependent Claim
117 words
A cutting element for use on a rotary drag bit for drilling subterranean formations, said cutting element comprising: a substrate having at least one substantially planar side and an arcuate perimeter comprising at least a segment of a circle, and further including a plurality of upwardly-projecting lands located on said at least one substantially planar side adjacent the perimeter of said substrate, said lands extending radially inwardly from said arcuate perimeter toward the location of the center of said circular segment; and a table comprising polycrystalline superhard material bonded to said substrate on said at least one substantially planar side thereof, extending between said lands and having a depth greater than the height of said upwardly-projecting lands.
Claim 3
Dependent Claim
16 words
The cutting element of claim 1, wherein said superhard material table comprises a polycrystalline diamond compact.
Claim 4
Dependent Claim
16 words
The cutting element of claim 2, wherein said polycrystalline diamond compact comprises a thermally stable product.
Claim 5
Dependent Claim
19 words
The cutting element of claim 1, wherein said lands are substantially evenly spaced about said perimeter of said substrate.
Claim 6
Dependent Claim
23 words
The cutting element of claim 1, wherein said substrate includes said center location, and said lands extend radially inwardly from said perimeter thereto.
Claim 7
Dependent Claim
12 words
The cutting element of claim 5, wherein said perimeter comprises a half-circle.
Claim 8
Dependent Claim
12 words
The cutting element of claim 5, wherein said perimeter comprises a circle.
Claim 9
Dependent Claim
17 words
The cutting element of claim 5, wherein said lands are spaced radially inwardly from said substrate perimeter.
Claim 10
Dependent Claim
13 words
The cutting element of claim 5, wherein said lands abut said substrate perimeter.
Claim 11
Dependent Claim
17 words
The cutting element of claim 1, wherein said lands are spaced radially inwardly from said substrate perimeter.
Claim 12
Dependent Claim
13 words
The cutting element of claim 1, wherein said lands abut said substrate perimeter.
Claim 13
Dependent Claim
25 words
The cutting element of claim 1, wherein at least some of said lands decrease in height as they increase in distance from said substrate perimeter.
Claim 14
Dependent Claim
25 words
The cutting element of claim 1, wherein at least some of said lands increase in height as they increase in distance from said substrate perimeter.
Claim 15
Dependent Claim
21 words
The cutting element of claim 1, wherein said lands decrease in width as they increase in distance from said substrate perimeter.
Claim 16
Dependent Claim
20 words
The cutting element of claim 1, wherein said lands increase in width as they increase in distance from said perimeter.
Claim 17
Dependent Claim
22 words
The cutting element of claim 1, wherein said lands vary in cross-sectional configuration between said perimeter and said center of said substrate.
Claim 18
Dependent Claim
16 words
The cutting element of claim 1, wherein at least some of said lands comprise discontinuous sub-lands.
Claim 19
Dependent Claim
14 words
The cutting element of claim 1, wherein said lands are of rectangular cross section.
Claim 20
Dependent Claim
14 words
The cutting element of claim 1, wherein said lands are of arcuate cross section.
Claim 21
Dependent Claim
13 words
The cutting element of claim 1, wherein said lands abut said substrate perimeter.
Claim 22
Dependent Claim
16 words
The cutting element of claim 1, wherein said lands are spaced inwardly from said substrate perimeter.
Claim 23
Dependent Claim
99 words
A cutting element for use on a rotary drag bit for drilling subterranean formations, said cutting element comprising: a substrate having at least one substantially planar side and a perimeter, and further including a plurality of upwardly-projecting lands located on said at least one substantially planar side adjacent the perimeter of said substrate wherein said lands meet proximate the center of said substrate; and a table comprising polycrystalline superhard material bonded to said substrate on said at least one substantially planar side thereof, extending between said lands and having a depth greater than the height of said upwardly-projecting lands.
Claim 24
Dependent Claim
99 words
A cutting element for use on a rotary drag bit for drilling subterranean formations, said cutting element comprising: a substrate having at least one substantially planar side and a perimeter, and further including a plurality of upwardly-projecting lands located on said at least one substantially planar side adjacent the perimeter of said substrate wherein said lands meet proximate the center of said substrate; and a table comprising polycrystalline superhard material bonded to said substrate on said at least one substantially planar side thereof, extending between said lands and having a depth greater than the height of said upwardly-projecting lands.
Claim 25
Dependent Claim
97 words
A cutting element for use on a rotary drag bit for drilling subterranean formations, said cutting element comprising: a substrate having at least one substantially planar side and a perimeter, and further including a plurality of upwardly-projecting lands located on said at least one substantially planar side adjacent the perimeter of said substrate wherein said substantially planar substrate side is convex; and a table comprising polycrystalline superhard material bonded to said substrate on said at least one substantially planar side thereof, extending between said lands and having a depth greater than the height of said upwardly-projecting lands.
Claim 26
Dependent Claim
97 words
A cutting element for use on a rotary drag bit for drilling subterranean formations, said cutting element comprising: a substrate having at least one substantially planar side and a perimeter, and further including a plurality of upwardly-projecting lands located on said at least one substantially planar side adjacent the perimeter of said substrate wherein said substantially planar substrate side is convex; and a table comprising polycrystalline superhard material bonded to said substrate on said at least one substantially planar side thereof, extending between said lands and having a depth greater than the height of said upwardly-projecting lands.
Claim 27
Dependent Claim
97 words
A cutting element for use on a rotary drag bit for drilling subterranean formations, said cutting element comprising: a substrate having at least one substantially planar side and a perimeter, and further including a plurality of upwardly-projecting lands located on said at least one substantially planar side adjacent the perimeter of said substrate wherein said substantially planar substrate side is concave; and a table comprising polycrystalline superhard material bonded to said substrate on said at least one substantially planar side thereof, extending between said lands and having a depth greater than the height of said upwardly-projecting lands.
Claim 28
Dependent Claim
97 words
A cutting element for use on a rotary drag bit for drilling subterranean formations, said cutting element comprising: a substrate having at least one substantially planar side and a perimeter, and further including a plurality of upwardly-projecting lands located on said at least one substantially planar side adjacent the perimeter of said substrate wherein said substantially planar substrate side is concave; and a table comprising polycrystalline superhard material bonded to said substrate on said at least one substantially planar side thereof, extending between said lands and having a depth greater than the height of said upwardly-projecting lands.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-10-03 | 1998-04-04 | 1998-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-10-03 | 2002-04-04 | 2002-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-10-03 | 2006-04-04 | 2006-10-04 | $7700.00 | Window Closed / Lapsed |