US5706906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Superabrasive cutting element with enhanced durability and increased wear life, and apparatus so equipped
Assignee: Baker Hughes Holdings LLC
•
Filing: 1996-02-15
•
Granted: 1998-01-13
•
Expires: 2016-02-15
Abstract
Abstract A cutting element for use in drilling subterranean formations. The cutting element includes a superabrasive table between about 0.070 inch and 0.150 inch thickness, mounted to a supporting substrate. The superabrasive table includes a two-dimensional cutting face having a cutting edge along at least a portion of its periphery, and a rake land extending forwardly and inwardly from the cutting edge at an angle of between about 10° and 80° to the longitudinal axis of the cutting element for a width, measured along the surface of the rake land, of not less than about 0.050 inch. The interface between the superabrasive volume and the substrate, taken to the rear of the cutting edge, is located no less than about 0.015 inch to the rear of the cutting edge.
Inventors
- 👤 Stephen R. Jurewicz
- 👤 Kenneth M. Jensen
- 👤 Gordon A. Tibbitts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:31
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/46; E21B10/56; E21B10/567; E21B10/5673
Claims Analysis
Total Claims: 51
Claim 1
Independent Claim
129 words
A cutting element for use on a bit for drilling subterranean formations, said cutting element having a longitudinal axis and comprising: a volume of superabrasive material including: a cutting face extending in two dimensions and generally transverse to said longitudinal axis; a cutting edge at a periphery of said cutting face; a rear boundary trailing said cutting edge at a longitudinal distance of no less than about 0.015 inch; and a rake land on said cutting face extending forwardly, inwardly and away from said cutting edge at an acute angle to said longitudinal axis; and wherein said volume of superabrasive material has a depth, measured parallel to said longitudinal axis and adjacent said cutting edge of not less than about 0.070 inch and not more than about 0.150 inch.
Claim 2
Dependent Claim
129 words
A cutting element for use on a bit for drilling subterranean formations, said cutting element having a longitudinal axis and comprising: a volume of superabrasive material including: a cutting face extending in two dimensions and generally transverse to said longitudinal axis; a cutting edge at a periphery of said cutting face; a rear boundary trailing said cutting edge at a longitudinal distance of no less than about 0.015 inch; and a rake land on said cutting face extending forwardly, inwardly and away from said cutting edge at an acute angle to said longitudinal axis; and wherein said volume of superabrasive material has a depth, measured parallel to said longitudinal axis and adjacent said cutting edge of not less than about 0.070 inch and not more than about 0.150 inch.
Claim 3
Dependent Claim
43 words
The cutting element of claim 1, wherein said rake land includes a width extending from said cutting edge forwardly and inwardly along the surface of said rake land of not less than about 0.050 inch measured along the surface of said rake land.
Claim 4
Dependent Claim
21 words
The cutting element of claim 1, wherein said superabrasive material includes a sidewall between said cutting edge and said rear boundary.
Claim 5
Dependent Claim
16 words
The cutting element of claim 3, wherein said sidewall is substantially parallel to said longitudinal axis.
Claim 6
Dependent Claim
27 words
The cutting element of claim 3, wherein said rake land is oriented at an angle of between about 10° and about 80° with respect to said sidewall.
Claim 7
Dependent Claim
27 words
The cutting element of claim 3, wherein said rake land is oriented at an angle of between about 30° and about 60° with respect to said sidewall.
Claim 8
Dependent Claim
26 words
The cutting element of claim 1, wherein said rake land is oriented at an angle of about 10° and 80° with respect to said longitudinal axis.
Claim 9
Dependent Claim
26 words
The cutting element of claim 1, wherein said rake land is oriented at an angle of about 30° and 60° with respect to said longitudinal axis.
Claim 10
Dependent Claim
18 words
The cutting element of claim 1, wherein said cutting element includes an arcuate periphery at said cutting edge.
Claim 11
Dependent Claim
12 words
The cutting element of claim 1, wherein said rake land is arcuate.
Claim 12
Dependent Claim
28 words
The cutting element of claim 1, wherein said cutting element is circular, said cutting edge is arcuate, and said rake land extends radially inwardly toward said longitudinal axis.
Claim 13
Dependent Claim
17 words
The cutting element of claim 11, wherein said rake land extends at least to said longitudinal axis.
Claim 14
Dependent Claim
21 words
The cutting element of claim 11, wherein said rake land lies between said cutting edge and a central cutting face area.
Claim 15
Dependent Claim
20 words
The cutting element of claim 13, wherein at least a portion of said central cutting face area is substantially planar.
Claim 16
Dependent Claim
19 words
The cutting element of claim 13, wherein at least a portion of said central cutting face area is convex.
Claim 17
Dependent Claim
19 words
The cutting element of claim 13, wherein at least a portion of said central cutting face area is concave.
Claim 18
Dependent Claim
24 words
The cutting element of claim 1, wherein a portion of said volume of superabrasive material is affixed to a portion of a substrate element.
Claim 19
Dependent Claim
22 words
The cutting element of claim 17, wherein said substrate element is affixed to said volume of superabrasive material proximate said rear boundary.
Claim 20
Dependent Claim
25 words
The cutting element of claim 17, wherein said substrate element is affixed to said volume of superabrasive material to the rear of said cutting edge.
Claim 21
Dependent Claim
129 words
A cutting element for use on a bit for drilling subterranean formations, said cutting element having a longitudinal axis and comprising: a volume of superabrasive material including: a cutting face extending in two dimensions and generally transverse to said longitudinal axis; a cutting edge at a periphery of said cutting face; and a rake land on said cutting face extending forwardly, inwardly and away from said cutting edge at an acute angle to said longitudinal axis for a width of no less than about 0.050 inch measured along the surface of said rake land; and wherein said volume of superabrasive material has a depth, measured parallel to said longitudinal axis and adjacent said cutting edge, of not less than about 0.070 inch and not more than about 0.150 inch.
Claim 22
Dependent Claim
129 words
A cutting element for use on a bit for drilling subterranean formations, said cutting element having a longitudinal axis and comprising: a volume of superabrasive material including: a cutting face extending in two dimensions and generally transverse to said longitudinal axis; a cutting edge at a periphery of said cutting face; and a rake land on said cutting face extending forwardly, inwardly and away from said cutting edge at an acute angle to said longitudinal axis for a width of no less than about 0.050 inch measured along the surface of said rake land; and wherein said volume of superabrasive material has a depth, measured parallel to said longitudinal axis and adjacent said cutting edge, of not less than about 0.070 inch and not more than about 0.150 inch.
Claim 23
Dependent Claim
32 words
The cutting element of claim 20, wherein said volume of superabrasive material further includes a rear boundary trailing said cutting edge at a longitudinal distance of not less than about 0.015 inch.
Claim 24
Dependent Claim
21 words
The cutting element of claim 21, wherein said superabrasive material includes a sidewall between said cutting edge and said rear boundary.
Claim 25
Dependent Claim
16 words
The cutting element of claim 21, wherein said sidewall is substantially parallel to said longitudinal axis.
Claim 26
Dependent Claim
27 words
The cutting element of claim 21, wherein said rake land is oriented at an angle of between about 10° and about 80° with respect to said sidewall.
Claim 27
Dependent Claim
27 words
The cutting element of claim 21, wherein said rake land is oriented at an angle of between about 30° and about 60° with respect to said sidewall.
Claim 28
Dependent Claim
27 words
The cutting element of claim 20, wherein said rake land is oriented at an angle of between about 10° and 80° with respect to said longitudinal axis.
Claim 29
Dependent Claim
27 words
The cutting element of claim 20, wherein said rake land is oriented at an angle of between about 30° and 60° with respect to said longitudinal axis.
Claim 30
Dependent Claim
18 words
The cutting element of claim 20, wherein said cutting element includes an arcuate periphery at said cutting edge.
Claim 31
Dependent Claim
12 words
The cutting element of claim 28, wherein said rake land is arcuate.
Claim 32
Dependent Claim
28 words
The cutting element of claim 20, wherein said cutting element is circular, said cutting edge is arcuate, and said rake land extends radially inwardly toward said longitudinal axis.
Claim 33
Dependent Claim
15 words
The cutting element of claim 30, wherein said rake land extends to said longitudinal axis.
Claim 34
Dependent Claim
21 words
The cutting element of claim 30, wherein said rake land lies between said cutting edge and a central cutting face area.
Claim 35
Dependent Claim
20 words
The cutting element of claim 32 wherein at least a portion of said central cutting face area is substantially planar.
Claim 36
Dependent Claim
19 words
The cutting element of claim 32, wherein at least a portion of said central cutting face area is convex.
Claim 37
Dependent Claim
19 words
The cutting element of claim 32, wherein at least a portion of said central cutting face area is concave.
Claim 38
Dependent Claim
21 words
The cutting element of claim 20, wherein said volume of superabrasive, material is affixed to a portion of a substrate element.
Claim 39
Dependent Claim
22 words
The cutting element of claim 36, wherein said substrate element is affixed to said volume of superabrasive material proximate said rear boundary.
Claim 40
Dependent Claim
25 words
The cutting element of claim 36, wherein said substrate element is affixed to said volume of superabrasive material to the rear of said cutting edge.
Claim 41
Independent Claim
143 words
An apparatus for use in drilling subterranean formations, comprising: a body presenting an exterior surface having at least one cutting element secured thereto; said at least one cutting element having a longitudinal axis and comprising a volume of superabrasive material including: a cutting face extending in two dimensions and generally transverse to said longitudinal axis; a cutting edge at a periphery of said cutting face; and a rake land on said cutting face extending forwardly, inwardly and away from said cutting edge at an acute angle to said longitudinal axis for a width of no less than about 0.050 inch measured along the surface of said rake land; and wherein said volume of superabrasive material has a depth, measured parallel to said longitudinal axis and adjacent said cutting edge, of not less than about 0.070 inch and not more than about 0.150 inch.
Claim 42
Independent Claim
143 words
An apparatus for use in drilling subterranean formations, comprising: a body presenting an exterior surface having at least one cutting element secured thereto; said at least one cutting element having a longitudinal axis and comprising a volume of superabrasive material including: a cutting face extending in two dimensions and generally transverse to said longitudinal axis; a cutting edge at a periphery of said cutting face; and a rake land on said cutting face extending forwardly, inwardly and away from said cutting edge at an acute angle to said longitudinal axis for a width of no less than about 0.050 inch measured along the surface of said rake land; and wherein said volume of superabrasive material has a depth, measured parallel to said longitudinal axis and adjacent said cutting edge, of not less than about 0.070 inch and not more than about 0.150 inch.
Claim 43
Dependent Claim
26 words
The apparatus of claim 39, wherein said rake land is oriented at an angle of between about 10° and 80° with respect to said longitudinal axis.
Claim 44
Dependent Claim
26 words
The apparatus of claim 39, wherein said rake land is oriented at an angle of between about 30° and 60° with respect to said longitudinal axis.
Claim 45
Dependent Claim
48 words
The apparatus of claim 39, wherein said body is selected from the group comprising: a drag bit body, a rolling cone bit body, a cone for a rolling cone bit, a mining bit body, a reamer, a stabilizer, a tool joint, a wear knot and a steering tool.
Claim 46
Independent Claim
143 words
An apparatus for use in drilling subterranean formations, comprising: a body presenting an exterior surface having at least one cutting element secured thereto; said at least one cutting element having a longitudinal axis and comprising a volume of superabrasive material including: a cutting face extending in two dimensions and generally transverse to said longitudinal axis; a cutting edge at a periphery of said curing face; a rear boundary trading said cutting edge at a longitudinal distance of no less than about 0.015 inch; and a rake land on said cutting face extending forwardly, inwardly and away from said cutting edge at an acute angle to said longitudinal axis; and wherein said volume of superabrasive material has a depth, measured parallel to said longitudinal axis and adjacent said cutting edge, of not less than about 0.070 inch and not more than about 0.150 inch.
Claim 47
Independent Claim
143 words
An apparatus for use in drilling subterranean formations, comprising: a body presenting an exterior surface having at least one cutting element secured thereto; said at least one cutting element having a longitudinal axis and comprising a volume of superabrasive material including: a cutting face extending in two dimensions and generally transverse to said longitudinal axis; a cutting edge at a periphery of said curing face; a rear boundary trading said cutting edge at a longitudinal distance of no less than about 0.015 inch; and a rake land on said cutting face extending forwardly, inwardly and away from said cutting edge at an acute angle to said longitudinal axis; and wherein said volume of superabrasive material has a depth, measured parallel to said longitudinal axis and adjacent said cutting edge, of not less than about 0.070 inch and not more than about 0.150 inch.
Claim 48
Dependent Claim
42 words
The apparatus of claim 43, wherein said rake land includes a width extending from said cutting edge forwardly and inwardly along the surface of said rake land of not less than about 0.050 inch measured along the surface of said rake land.
Claim 49
Dependent Claim
48 words
The apparatus of claim 43, wherein said body is selected from the group comprising: a drag bit body, a rolling cone bit body, a cone for a rolling cone bit, a mining bit body, a reamer, a stabilizer, a tool joint, a wear knot and a steering tool.
Claim 50
Dependent Claim
26 words
The apparatus of claim 43, wherein said rake land is oriented at an angle of between about 10° and 80° with respect to said longitudinal axis.
Claim 51
Dependent Claim
26 words
The apparatus of claim 43, wherein said rake land is oriented at an angle of between about 30° and 60° with respect to said longitudinal axis.
References Cited (Backward Citations)
US3745623A
Cited
US4109737A
Cited
US4323130A
Cited
US4545441A
Cited
US4498549A
Cited
US4381825A
Cited
US4442909A
Cited
US4396077A
Cited
US4410054A
Cited
US4494618A
Cited
US4478298A
Cited
US4724913A
Cited
US4632196A
Cited
US4593777A
Cited
US4499958A
Cited
US4499795A
Cited
US4607711A
Cited
US4729440A
Cited
US4592433A
Cited
US5127923A
Cited
EP0219959A2
Cited
US4784023A
Cited
US4690691A
Cited
US4797138A
Cited
US4714385A
Cited
US4702649A
Cited
US4792001A
Cited
US4926950A
Cited
US4705123A
Cited
GB2193740A
Cited
US4872520A
Cited
US4764434A
Cited
US4869330A
Cited
US4987800A
Cited
US5027912A
Cited
US4858707A
Cited
US5054246A
Cited
US5016718A
Cited
US4984642A
Cited
US5045092A
Cited
EP0411831B1
Cited
US5135061A
Cited
US5011515B1
Cited
US5011515A
Cited
US4976324A
Cited
US5161627A
Cited
GB2240797A
Cited
US5154245A
Cited
US5335738A
Cited
US5199512A
Cited
US5291957A
Cited
US5301762A
Cited
US5264283A
Cited
US5103922A
Cited
US5248006A
Cited
US5273125A
Cited
US5159857A
Cited
US5119714A
Cited
US5173090A
Cited
US5120327A
Cited
US5332051A
Cited
US5238074A
Cited
US5346026A
Cited
US5467836A
Cited
US5314033A
Cited
US5279375A
Cited
US5437343A
Cited
US5316095A
Cited
US5337844A
Cited
US5370717A
Cited
US5351772A
Cited
US5355969A
Cited
US5460233A
Cited
US5379854A
Cited
US5499688A
Cited
US5379853A
Cited
US5447208A
Cited
US5435403A
Cited
US5433280A
Cited
US5443565A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-01-12 | 2001-07-14 | 2002-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-01-12 | 2005-07-14 | 2006-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-01-12 | 2009-07-14 | 2010-01-13 | $7700.00 | Window Closed / Lapsed |