US4176723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diamond drill bit
Assignee: Dtl Inc
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Filing: 1977-11-11
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Granted: 1979-12-04
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Expires: 1997-11-11
Abstract
Abstract A diamond drill bit construction for drilling bores in earth formations and the like, according to the present invention, comprises a drill body that is adapted for connection thereof with a drill stem and defines internal fluid passage means through which drilling fluid flows during drilling operations. A plurality of spaced stabilizer pads are formed on the drill body defining a portion of the external surface area thereof and defining a plurality of fluid courses between adjacent stabilizer pads with the fluid courses being in communication with the fluid passage means of the drill body. A plurality of diamonds are supported by the drill body and are arranged on each of the bearing pads such that a portion of each of the diamonds is positioned at the trailing edge of a respective one of the fluid courses and such that the cutting depth of each of the diamonds is controlled by the bearing pads. The diamonds are arranged in single rows on the bearing pads with the bearing pads and rows of diamonds extending to the apex center of the bit. Fluid jets may be located suitably about the drilling face of the bit or the flow of fluid may be otherwise controlled by the configuration of the face of the bit so as to provide optimum flow of drilling fluid at the immediate vicinity of the apex.
Inventors
- 👤 Leonce Arceneaux
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:23
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/46
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
161 words
A diamond drill bit construction for drilling bores in earth formations and the like, said drill bit construction comprising: a drill body having connection means formed thereon for connection with a drill stem, said drill body being formed to define internal fluid passage means through which drilling fluid flows during drilling operations; a plurality of spaced bearing pads being formed on said drill body defining a portion of the external surface area and defining a plurality of fluid courses between adjacent bearing pads, said fluid courses being in communication with said fluid passage means said bearing pads engage said formation and limit penetration of said diamonds into said formation; and a plurality of diamonds being supported by said drill body and being arranged on each of said bearing pads, the leading portion of each of said diamonds being positioned at the trailing edge of a respective one of said fluid courses said diamonds extending substantially to the center of the bit.
Claim 2
Dependent Claim
161 words
A diamond drill bit construction for drilling bores in earth formations and the like, said drill bit construction comprising: a drill body having connection means formed thereon for connection with a drill stem, said drill body being formed to define internal fluid passage means through which drilling fluid flows during drilling operations; a plurality of spaced bearing pads being formed on said drill body defining a portion of the external surface area and defining a plurality of fluid courses between adjacent bearing pads, said fluid courses being in communication with said fluid passage means said bearing pads engage said formation and limit penetration of said diamonds into said formation; and a plurality of diamonds being supported by said drill body and being arranged on each of said bearing pads, the leading portion of each of said diamonds being positioned at the trailing edge of a respective one of said fluid courses said diamonds extending substantially to the center of the bit.
Claim 3
Dependent Claim
36 words
A diamond drill bit construction as recited in claim 1, wherein: said diamonds are arranged in single rows on said bearing pads and at least one of said rows traversing the apex center of the bit.
Claim 4
Dependent Claim
24 words
A diamond drill bit construction as recited in claim 1, wherein: each of said bearing pads and fluid courses are of generally spiral configuration.
Claim 5
Dependent Claim
60 words
A diamond drill bit construction as recited in claim 1, wherein: a plurality of stabilizer pads are formed on the drill body, said stabilizer pads being of the same height as said bearing pads and cooperating with said bearing pads to control the depth of penetration of said diamonds into said earth formation and limiting wear of said stabilizer pads.
Claim 6
Dependent Claim
33 words
A diamond drill bit construction as recited in claim 1, wherein: said body construction is formed to define side fluid courses, said side fluid courses being continuations of said plurality of fluid courses.
Claim 7
Dependent Claim
61 words
A diamond drill bit construction as recited in claim 5, wherein: each of said bearing pads and fluid courses is of spiral configuration; and said body construction is formed to define a plurality of side fluid courses, said side fluid courses being continuations of said plurality of fluid courses and being of generally spiral configuration of substantially 45° from the vertical.
Claim 8
Dependent Claim
48 words
A diamond drill bit construction as recited in claim 1, wherein: said diamonds project beyond said bearing pads sufficiently to define a predetermined cutting depth, said bearing pads engaging said formation during drilling operations and limiting penetration of said diamonds into said formation to said predetermined cutting depth.
Claim 9
Dependent Claim
48 words
A diamond drill bit construction as recited in claim 7, wherein: a plurality of stabilizer pads are defined by said body construction, said stabilizer pads engage said formation to limit penetration of said diamonds into said formation and to limit wear of said stabilizer pads by said formation.
Claim 10
Dependent Claim
28 words
A diamond drill bit construction as recited in claim 2, wherein: said diamonds are oriented in single rows along the leading edges of each of said bearing pads.
Claim 11
Dependent Claim
48 words
A diamond drill bit construction as recited in claim 9, wherein: said diamonds project beyond said bearing pads sufficiently to define a predetermined cutting depth, said bearing pads engaging said formation during drilling operations and limiting penetration of said diamonds into said formation to said predetermined cutting depth.
Claim 12
Dependent Claim
54 words
A diamond drill bit construction as recited in claim 10, wherein: each of said bearing pads and fluid courses is of generally spiral configuration; and said body construction is formed to define a plurality of side fluid courses, said side fluid courses being continuations of said fluid courses and being of generally spiral configuration.
Claim 13
Dependent Claim
35 words
A diamond drill bit construction as recited in claim 11, wherein: said fluid courses are oriented substantially 30° in respect to a radial; and said side fluid courses are oriented substantially 45° from the vertical.
Claim 14
Dependent Claim
50 words
A diamond drill bit construction as recited in claim 1, wherein: said internal fluid passage means define at least one restricted outlet opening means communicating directly with said fluid courses, the cross-sectional dimension of said restricted outlet opening means being less than the accumulated cross-sectional dimension of said fluid courses.
Claim 15
Dependent Claim
38 words
A diamond drill bit construction as recited in claim 13, wherein: a plurality of jet inserts are retained by said drill body, said restricted outlet opening means is defined by the accumulated cross-sectional dimension of said jet inserts.
Claim 16
Dependent Claim
44 words
A diamond drill bit construction as recited in claim 14, wherein: said jet inserts define retainer shoulder means; and matrix material, defining a portion of said drill body, engages said retainer shoulder means to retain said jet inserts in assembly with said drill body.
Claim 17
Dependent Claim
28 words
A diamond drill bit construction as recited in claim 14 wherein: tapered passage means is defined within each of said jet inserts and defines a restricted outlet opening.
Claim 18
Dependent Claim
19 words
A diamond drill bit as recited in claim 13, wherein: said restricted outlet opening means is of oval configuration.
References Cited (Backward Citations)
SU237701A1
Cited
US2838284A
Cited
US3135341A
Cited
US3175629A
Cited
US3318400A
Cited
US3709308A
Cited
US3825083A
Cited
US3823789A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-12-03 | 1983-06-04 | 1983-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-03 | 1987-06-04 | 1987-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-03 | 1991-06-04 | 1991-12-04 | $7700.00 | Window Closed / Lapsed |