EP0156235A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Multi-component cutting element using consolidated rod-like polycrystalline diamond
Assignee: Baker Hughes Oilfield Operations LLC
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Filing: 1985-03-12
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Granted: —
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Expires: 2005-03-12
Abstract
Abstract An enlarged diamond table for use as a cutter (10) in rotating drill bits is provided by disposing a plurality of thermally stable or leached polycrystalline diamond (PCD) rod- like elements (12) within a matrix body (16). In one embodiment the matrix body (16) is impregnated with diamond grit and completely fills the interstitial spaces between the plurality of diamond elements (12). Generally, the diamond elements (12) have their longitudinal axes arranged in a mutually parallel configuration. The bundle of rod-like diamond elements (12) are in one embodiment in a compact touching array and in another embodiment in a spaced-apart array. In the illustrated embodiment, a bundle of rod-like diamond elements are disposed so that their end surfaces are exposed on the cutting face (14) of the cutting slug (10). The slug (10) is then in turn mounted on a stud or directly infiltrated into a matrix body bit (Figure 1).
Inventors
- 👤 Alexander K. Meskin
- 👤 Louis K. Bigelow
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 03:22
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/46; E21B10/56; E21B10/567; E21B10/5676; Y; Y10; Y10S; Y10S76/00; Y10S76/12; Y10T; Y10T408/00; Y10T408/81
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
72 words
A diamond cutter element for use in a drill bit comprising: a plurality of thermally stable polycrystalline diamond (PCD) cutting elements each characterised by a longitudinal axis; and a cutting slug formed of a matrix material, said plurality of PCD elements disposed in said matrix material wherein said longitudinal axis of said elements are generally mutually parallel, whereby an enlarged diamond cutting slug can be provided for mounting within said drill bit.
Claim 2
Dependent Claim
72 words
A diamond cutter element for use in a drill bit comprising: a plurality of thermally stable polycrystalline diamond (PCD) cutting elements each characterised by a longitudinal axis; and a cutting slug formed of a matrix material, said plurality of PCD elements disposed in said matrix material wherein said longitudinal axis of said elements are generally mutually parallel, whereby an enlarged diamond cutting slug can be provided for mounting within said drill bit.
Claim 3
Dependent Claim
22 words
The cutter of Claim 1 wherein said matrix material incorporates diamond grit dispersed at least through a portion of said cutting slug
Claim 4
Dependent Claim
18 words
The cutter of Claim 1 said PCD elements are each comprised of right circular cylindrical synthetic diamond rods.
Claim 5
Dependent Claim
22 words
The cutter of Claim 1 wherein said PCD elements are each comprised of a longitudinal segment of a right circular cylindrical rod.
Claim 6
Dependent Claim
14 words
The cutter of Claim 4 wherein said longitudinal segment is a quarter-split cylindrical rod.
Claim 7
Dependent Claim
16 words
The cutter of Claim 1 wherein said PCD elements each comprise a generally rectangular prismatic rod.
Claim 8
Dependent Claim
15 words
The cutter of Claim 1 wherein said PCD elements each comprise a generally elliptical rod.
Claim 9
Dependent Claim
23 words
The cutter of Claim 1 wherein said matrix material forms said cutting slug generally in the form of a right circular, cylindrical disk.
Claim 10
Dependent Claim
22 words
The cutter of Claim 1 wherein said matrix material forms said cutting slug in the shape of a generally triangular prismatic section.
Claim 11
Dependent Claim
22 words
The cutter of Claim 1 wherein said matrix material forms said cutting slug generally in the shape of a rectangular prismatic section.
Claim 12
Dependent Claim
22 words
ll. The cutter of Claim 1 wherein said matrix material forms said cutting slug generally in the shape of an elliptical disk.
Claim 13
Dependent Claim
47 words
The cutter of Claim 1 wherein said cutting slug formed of matrix material is further characterised by having an axis of symmetry and wherein each of said PCD elements has its longitudinal axis arranged and configured generally parallel to said axis of symmetry of said cutting slug.
Claim 14
Dependent Claim
32 words
The cutter of Claim 12 wherein said PCD elements are compactly bundled within said cutting slug formed of matrix material so that each PCD element is immediately proximate to an adjacent element.
Claim 15
Dependent Claim
27 words
The cutter of Claim 12 wherein said plurality of PCD elements are disposed within said cutting slug in a spaced-apart relationship with said matrix material disposed therebetween.
Claim 16
Dependent Claim
30 words
The cutter of Claim 12 wherein said cutting slug has an exposed cutting face and said axis of symmetry of said cutting slug is generally normal to said cutting face.
Claim 17
Dependent Claim
84 words
A diamond cutter for use in a drill bit comprising: a plurality of leached PCD elements each characterized by a longitudinal axis, said PCD elements arranged and configured in said cutter so that said longitudinal axes are mutually parallel; and diamond bearing matrix material disposed between and about said plurality of PCD elements to form an aggregate cutting slug of a predetermined gross shape, whereby an enlarged diamond cutter substantially characterized by the material properties of said plurality of leached PCD elements is provided.
Claim 18
Dependent Claim
84 words
A diamond cutter for use in a drill bit comprising: a plurality of leached PCD elements each characterized by a longitudinal axis, said PCD elements arranged and configured in said cutter so that said longitudinal axes are mutually parallel; and diamond bearing matrix material disposed between and about said plurality of PCD elements to form an aggregate cutting slug of a predetermined gross shape, whereby an enlarged diamond cutter substantially characterized by the material properties of said plurality of leached PCD elements is provided.
Claim 19
Dependent Claim
33 words
The cutter of Claim 16 wherein said cutting slug has a cutting face exposed to cutting action and wherein such longitudinal axes of said PCD elements are generally perpendicular to said cutting face.
Claim 20
Dependent Claim
31 words
The cutter of Claim 17 wherein said PCD elements are compactly set within said cutting slug so that each PCD element is immediately proximate to at least one adjacent PCD element.
Claim 21
Dependent Claim
27 words
The cutter of Claim 17 wherein said PCD elements are disposed in said cutting slug in a spaced-apart relationship with said diamond bearing matrix material disposed therebetween.
Claim 22
Dependent Claim
18 words
The cutter of Claim 16 wherein said diamond bearing matrix material incorporates a uniform distribution of diamond grit.
Claim 23
Dependent Claim
56 words
An improvement in a diamond cutter characterised by a cutter body comprising a plurality of thermally stable rod-like PCD elements disposed in said cutter body in an array, said cutter body further characterised by a cutter face, said plurality of PCD elements having at least one portion thereof extending to and exposed at said cutter face.
Claim 24
Dependent Claim
56 words
An improvement in a diamond cutter characterised by a cutter body comprising a plurality of thermally stable rod-like PCD elements disposed in said cutter body in an array, said cutter body further characterised by a cutter face, said plurality of PCD elements having at least one portion thereof extending to and exposed at said cutter face.
Claim 25
Dependent Claim
114 words
A diamond cutter element for use in a drill bit comprising: a plurality of thermally stable polycrystalline diamond (PCD) cutting elements, each characterized by a longitudinal axis; and a matrix material forming a cutting slug, said plurality of PCD elements disposed in said matrix material wherein said longitudinal axes of said elements are generally mutually parallel, said cutting slug disposed in said drill bit to present said longitudinal axes of said plurality of PCD cutting elements in a predetermined direction, said cutting slug characterized by a cutting direction, said cutting direction defined as the instantaneous direction of displacement of said cutting slug as determined by said drill bit when said drill bit is operative.
Claim 26
Dependent Claim
114 words
A diamond cutter element for use in a drill bit comprising: a plurality of thermally stable polycrystalline diamond (PCD) cutting elements, each characterized by a longitudinal axis; and a matrix material forming a cutting slug, said plurality of PCD elements disposed in said matrix material wherein said longitudinal axes of said elements are generally mutually parallel, said cutting slug disposed in said drill bit to present said longitudinal axes of said plurality of PCD cutting elements in a predetermined direction, said cutting slug characterized by a cutting direction, said cutting direction defined as the instantaneous direction of displacement of said cutting slug as determined by said drill bit when said drill bit is operative.
Claim 27
Dependent Claim
31 words
The cutter of Claim 22, wherein said predetermined direction of said longitudinal axes of said plurality of PCD cutting elements is generally parallel to said cutting direction of said cutting slug.
Claim 28
Dependent Claim
28 words
The cutter of Claim 22, wherein said predetermined direction of said longitudinal axes of said PCD elements is generally perpendicular to said cutting direction of said cutting slug.
Claim 29
Dependent Claim
32 words
The cutter of Claim 22, wherein said predetermined direction of said longitudinal axes of said plurality of PCD cutting elements is inclined with respect to said cutting direction of said cutting slug.
Claim 30
Dependent Claim
18 words
The cutter of Claim 22, wherein each said PC D cutting element is characterized by a needle-like shape.
Claim 31
Dependent Claim
18 words
The cutter of Claim 25, wherein each said PC D cutting element is characterized by a needle-like shape.
References Cited (Backward Citations)
No citation records indexed.
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