Patent US2448031A successfully refreshed from Google Patents.
Patent US4869330A successfully refreshed from Google Patents.
US4869330A
Expired / Lapsed
US
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Apparatus for establishing hydraulic flow regime in drill bits
Assignee: Baker Hughes Oilfield Operations LLC
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Filing: 1988-01-20
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Granted: 1989-09-26
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Expires: 2008-01-20
Abstract
Abstract A drill bit is provided which includes cutting elements cooperatively arranged with apertures in the bit to define flow paths for hydraulic flow proximate each cutting element. Cutting elements are preferably arranged in cutting pads which generally surround the apertures, such that hydraulic flow is forced to flow across the entire surface of the cutting pad. The dimensions of the cutting pad may be varied so as to control the hydraulic flow.
Inventors
- 👤 Gordon A. Tibbitts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:25
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/60; E21B10/602; E21B10/46; E21B10/56; E21B10/567
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
85 words
A drill bit, comprising: a body member, said body member including at least one aperture therethrough; a generally continuous land surrounding said aperture, said continuous land conformed to provide a restriction to fluid flow when said drill bit is operated within a borehole; a plurality of cutting elements cooperatively arranged with said generally continuous land; and a plurality of flow channels formed across said generally continuous land so that hydraulic flow from said aperture will flow proximate individual elements of said plurality of cutting elements.
Claim 2
Dependent Claim
85 words
A drill bit, comprising: a body member, said body member including at least one aperture therethrough; a generally continuous land surrounding said aperture, said continuous land conformed to provide a restriction to fluid flow when said drill bit is operated within a borehole; a plurality of cutting elements cooperatively arranged with said generally continuous land; and a plurality of flow channels formed across said generally continuous land so that hydraulic flow from said aperture will flow proximate individual elements of said plurality of cutting elements.
Claim 3
Dependent Claim
38 words
The drill bit of claim 1, wherein said body member includes a plurality of apertures and a plurality of generally continuous lands, and wherein each of said generally continuous lands generally surrounds one or more of said apertures.
Claim 4
Dependent Claim
44 words
The drill bit of claim 1, wherein said generally continuous land includes an increased surface area proximate an outer radial portion of said drill bit relative to the surface area of said generally continuous land proximate an inner radial portion of said drill bit.
Claim 5
Dependent Claim
31 words
The drill bit of claim 1 , wherein said generally continuous land is elevated relative to the portion of said drill bit adjacent the outer periphery of said generally continuous land.
Claim 6
Dependent Claim
25 words
The drill bit of claim 1, wherein said generally continuous land extends along a bottom cutting portion and along the gage of said drill bit.
Claim 7
Dependent Claim
33 words
The drill bit of claim 1, wherein said drill bit comprises cutters to cut along the gage of said drill bit, and wherein said gage cutters are placed on said generally continuous land.
Claim 8
Dependent Claim
86 words
The drill bit of claim 1, wherein said drill bit comprises a plurality of apertures, and wherein said drill bit further comprises a plurality of generally continuous lands surrounding at least one of said apertures, and wherein each generally continuous land includes a plurality of cutting elements cooperatively arranged with said generally continuous land, and a plurality of flow channels formed in each of said generally continuous lands to provide hydraulic flow from said respective apertures proximate each cutting element of said plurality of cutting elements.
Claim 9
Dependent Claim
26 words
The drill bit of claim 7 wherein at least one of said generally continuous lands is adapted to cut along the gage of said drill bit.
Claim 10
Dependent Claim
17 words
The drill bit of claim 1, wherein said generally continuous land includes a plurality of flow channels.
Claim 11
Dependent Claim
29 words
The drill bit of claim 1, wherein said generally continuous land varies in height relative to portions of said drill bit adjacent the outer periphery of said continuous land.
Claim 12
Dependent Claim
15 words
The drill bit of claim 1, wherein said cutting elements comprise synthetic diamond cutting elements.
Claim 13
Dependent Claim
17 words
The drill bit of claim 11, wherein said synthetic diamond cutters are retained in a sintered matrix.
Claim 14
Dependent Claim
24 words
The drill bit of claim 1, wherein each of said flow channels lies immediately adjacent one cutting element of said plurality of cutting elements.
Claim 15
Dependent Claim
16 words
The drill bit of claim 1, wherein said apertures is in the form of a nozzle.
Claim 16
Dependent Claim
27 words
The drill bit of claim 1, wherein said plurality of flow channels are distributed with one of said flow channels on each side of each cutting element.
Claim 17
Dependent Claim
32 words
The drill bit of claim 15, wherein said flow channels on each side of each of said cutting elements converge toward one another at the outer periphery of said generally continuous land.
Claim 18
Dependent Claim
97 words
A drill bit, comprising: a body member, said body member including at least one aperture therethrough; a generally continuous land surrounding said aperture, said continuous land conformed to provide a restriction to fluid flow when said drill bit is operated within a borehole; a plurality of flow channels formed across said generally continuous land; and a plurality of cutting elements cooperatively arranged at least partially within the flow channels of said generally continuous land whereby hydraulic fluid from said aperture flows through said plurality of flow channels to each cutting element of said plurality of cutting elements.
Claim 19
Dependent Claim
97 words
A drill bit, comprising: a body member, said body member including at least one aperture therethrough; a generally continuous land surrounding said aperture, said continuous land conformed to provide a restriction to fluid flow when said drill bit is operated within a borehole; a plurality of flow channels formed across said generally continuous land; and a plurality of cutting elements cooperatively arranged at least partially within the flow channels of said generally continuous land whereby hydraulic fluid from said aperture flows through said plurality of flow channels to each cutting element of said plurality of cutting elements.
Claim 20
Dependent Claim
38 words
The drill bit of claim 17, wherein said body member includes a plurality of apertures and a plurality of generally continuous lands, and wherein each of said generally continuous lands generally surrounds one or more of said apertures.
Claim 21
Dependent Claim
44 words
The drill bit of claim 17, wherein said generally continuous land includes an increased surface area proximate an outer radial portion of said drill bit relative to the surface area of said generally continuous land proximate an inner radial portion of said drill bit.
Claim 22
Dependent Claim
29 words
The drill bit of claim 17, wherein said generally continuous land is elevated relative to the portion of said drill bit adjacent the outer periphery of generally continuous land.
Claim 23
Dependent Claim
25 words
The drill bit of claim 17, wherein said generally continuous land extends along a bottom cutting portion and along the gage of said drill bit.
Claim 24
Dependent Claim
85 words
The drill bit of claim 17, wherein said drill bit further comprises: a plurality of apertures through said body member; a plurality of generally continuous lands surrounding at least one of said apertures; a plurality of flow channels formed across each of said generally continuous lands; a plurality of cutting elements cooperatively arranged within the flow channels of said generally continuous lands whereby hydraulic fluid from respective apertures flows through said plurality of flow channels to each cutting element of said plurality of cutting elements.
Claim 25
Dependent Claim
25 words
The drill bit of claim 22, wherein at least one of said continuous lands is adapted to cut along the gage of said drill bit.
Claim 26
Dependent Claim
29 words
The drill bit of claim 17, wherein said generally continuous land varies in height relative to portions of said drill bit adjacent the outer periphery of said continuous land.
Claim 27
Dependent Claim
12 words
The drill bit of claim 17, wherein said aperture includes a nozzle.
Claim 28
Dependent Claim
100 words
A drill bit, comprising: a body member having at least one aperture extending therethrough, said aperture being adapted to pass fluid; a generally continuous land surrounding said aperture, and being elevated relative to selected adjacent portions of said body member, said land having a first portion and a second portion, said first portion being lower than said second portion; and a plurality of cutting elements arranged on said first portion of said land, whereby said higher, second portion of said land directs fluid flow from said aperture across said first portion of said land and said cutting elements arranged thereon.
Claim 29
Dependent Claim
100 words
A drill bit, comprising: a body member having at least one aperture extending therethrough, said aperture being adapted to pass fluid; a generally continuous land surrounding said aperture, and being elevated relative to selected adjacent portions of said body member, said land having a first portion and a second portion, said first portion being lower than said second portion; and a plurality of cutting elements arranged on said first portion of said land, whereby said higher, second portion of said land directs fluid flow from said aperture across said first portion of said land and said cutting elements arranged thereon.
Claim 30
Dependent Claim
22 words
The drill bit of claim 26, wherein said second portion of said land is wider than said first portion of said land.
Claim 31
Dependent Claim
17 words
The drill bit of claim 26, wherein said second portion of said land includes an abrading surface.
Claim 32
Dependent Claim
38 words
The drill bit of claim 26, wherein said body member includes a plurality of apertures and a plurality of generally continuous lands, and wherein each of said generally continuous lands generally surrounds one or more of said apertures.
Claim 33
Dependent Claim
44 words
The drill bit of claim 26, wherein said generally continuous land includes an increased surface area proximate an outer radial portion of said drill bit relative to the surface area of said generally continuous land proximate an inner radial portion of said drill bit.
Claim 34
Dependent Claim
25 words
The drill bit of claim 26, wherein said generally continuous land extends along a bottom cutting portion and along the gage of said drill bit.
Claim 35
Dependent Claim
12 words
The drill bit of claim 26, wherein said aperture includes a nozzle.
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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) | 1992-09-25 | 1993-03-27 | 1993-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-25 | 1997-03-27 | 1997-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-25 | 2001-03-27 | 2001-09-26 | $7700.00 | Window Closed / Lapsed |