| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 121 | Rotary drilling device | EP88810240.7 | 1988-04-14 | EP0289457B1 | 1990-11-22 | Reid, Neil George; Kaalstad, Oscar William |
| 122 | A body structure and nozzle for enhancing the flow of drilling fluid in a rotary drill bit | EP81104017 | 1981-05-25 | EP0040846A3 | 1982-07-07 | Gonzalez, Eduardo Barnetche |
A rotary drill bit for drilling a bore hole in the surface of the earth is provided in which the drill bit comprises a body having a duct therethrough for carrying drilling fluid. A conical cutting head having an axis at an acute angle with respect to the axis of the drill bit .is mounted in the cutting head. An elongated nozzle is positioned at the end of the duct for injecting the drilling fluid into the bore hole. The nozzle has an opening which opens into the bore hole wherein the longitudinal center line of the opening follows the locus of the mid-point between the side wall of the bore hole and the outermost circumference of the cutting head. Drilling fluid injected through the nozzle removes detritus from between the teeth and the cutting head at the bottom of the bore hole. The body of the drill bit has a first portion having a truncated conical surface with the axis of the truncated cone coinciding with the axis of the cutting head. The surface of the truncated cone is tangent to the side surface of the bore hole at a line on the opposite side of the body from the nozzle. This forms a passage between the surface of the truncated cone and the side surface of the bore hole for the upward flow of drilling fluid and detritus. |
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| 123 | Rolling cutter drill bit | EP81301218 | 1981-03-23 | EP0038125A3 | 1981-11-11 | Schumacher, Percy William |
This invention discloses a rolling cone drilling bit (10) having a plurality of cutters (16) which have inserted therein hard metal cutting elements (22) preferably formed of tungsten carbide alloy; and in which bit the rolling cone cutters (16) are located in such a manner that their rotational axes (32) are greatly offset from the rotational axis (34) of the drill bit. |
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| 124 | DURABLE ROCK BIT FOR BLAST HOLE DRILLING | EP17185066.2 | 2017-08-07 | EP3282083A1 | 2018-02-14 | Beavers, Tony Jack; Kongamnach, Amnach |
A rock bit (1) for blast hole drilling includes: a bit body (2) having a coupling (5) formed at an upper end thereof, a plurality of lower legs (6a), a dome (7) formed between the legs, and a bore formed through the coupling and the dome; a plurality of skirts (12a), each skirt covering a gap formed between adjacent legs and each skirt mounted to edges of adjacent legs; a plurality of roller cones (3a), each rotary cone rotatably mounted to a respective bearing shaft (8b) of a respective leg; a row of gage cutters (10g) mounted to each roller cone; a row of inner cutters (10a,10b) mounted to each roller cone; one or more nose cutters (10n) mounted to each roller cone; and a center jet (4) secured in the bore. Each cutter is an insert.
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| 125 | HYBRID DRILL BITS HAVING INCREASED DRILLING EFFICIENCY | EP16201774.3 | 2012-11-15 | EP3159475A1 | 2017-04-26 | ZAHRADNIK, Anton F.; PESSIER, Rolf C.; ROTHE, Mitchell A.; NGUYEN, Don Q.; CEPEDA, Karlos; DAMSCHEN, Michael S.; BUSKE, Robert J.; HOWARD, Johnathan; VEMPATI, Chaitanya K. |
A hybrid earth-boring drill bit (611), comprising a bit body (613) having a face, wherein said hybrid earth-boring drill bit (611) comprises roller cone support arms (617, 619) and fixed blades (623, 625) extending radially outward from ends located proximate a central axis of the bit body, wherein the further comprise a saddle mount assembly (660) proximate the central axis of the bit body and the roller cones (629, 631) are rotatably mounted on spindles (670) projecting outwardly from the saddle mount assembly (660).
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| 126 | DRILLING SYSTEMS AND HYBRID DRILL BITS FOR DRILLING IN A SUBTERRANEAN FORMATION AND METHODS RELATING THERETO | EP14821955.3 | 2014-12-05 | EP3077614A1 | 2016-10-12 | CLAUSEN, Jeffery Ronald |
| Drill bits and methods relating thereto are disclosed. In an embodiment, the drill bit includes a body having a plurality of legs each having a lower section that has a leading surface and a trailing surface. A plurality of cone cutters are each rotatably mounted to the lower section of one of the legs, each having a cone axis, and including a first plurality of cutter elements arranged about the cone axis such that each is shear the formation when the body is rotated about the bit axis. | ||||||
| 127 | Roller cutter drill bit with mixed bearing types | EP14187264.8 | 2014-10-01 | EP2863004A1 | 2015-04-22 | King, William W. |
A roller cutter drill bit with mixed bearing types includes a bit body (12) with at least one journal facet (36) and a cavity facet (34). A cavity extends into the bit body from the cavity facet (34). The bit body is configured to rotate about a bit axis (14) during drilling. A journal extends outward from the at least one journal facet (36). A first rotatable cutter (16) that supports a first plurality of cutting structures (23) has a journal portion received by the cavity. A second rotatable cutter (18) that supports a second plurality of cutting structures (23) has a cavity portion that receives the journal.
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| 128 | DRILL BITS WITH ANTI-TRACKING FEATURES | EP11730836.1 | 2011-06-29 | EP2588704A1 | 2013-05-08 | BUSKE, Robert, J.; BRADFORD, John, F. |
| Drill bits (11) with at least two roller cones (21) of different diameters and/or utilizing different cutter pitches in order to reduce bit tracking during drilling operations are described. In particular, earth boring drill bits are provided, the bits having two or more roller cones, and optionally one or more cutter blades (19), the bits being arranged for reducing tracking by the roller cone teeth during operation by adjusting the teeth spacing, cone pitch angle, and/or the diameter of one or more of the cones. These configurations enable anti-tracking behavior and enhanced drilling efficiency during bit operation. | ||||||
| 129 | ANTI-TRACKING SPEAR-POINTS FOR EARTH-BORING DRILL BITS | EP10744789.8 | 2010-08-06 | EP2462305A2 | 2012-06-13 | BUSKE, Robert, J.; FLOREY, James |
| Described herein are roller cone drill bits and modified roller cones for use in drilling subterranean earth formations, and more specifically roller cone drill bits and roller cones having optimized spear point designs and blade orientations on at least one of the roller cones for reduced tracking and / or increased drilling performance during bit use. The roller cone drill bits include a bit body with a longitudinal axis, one or more bit legs depending from the body, and at least one roller cone attached to each of the bit legs and able to rotate with respect to the bit body, wherein at least one of the roller cones includes a spear point at the cone apex having two or more cutting blades, the cutting blades being oriented at a variety of non-equal, asymmetric angles about a central cone axis with respect to each other, such that tracking during drilling using the drill bit is minimized or eliminated. | ||||||
| 130 | CUTTING STRUCTURE FOR EARTH-BORING BIT TO REDUCE TRACKING | EP07777303.4 | 2007-05-29 | EP2038506B1 | 2011-07-13 | FELDERHOFF, Floyd; ISBELL, Matthew, R.; PESSIER, Rudolf, C. |
| An earth boring bit has cutting elements arranged to avoid tracking. The bit has a bit body having a bit axis of rotation. First, second and third cones are rotatably mounted to the bit body, each of the cones having a plurality of rows of cutting elements including a heel row and an adjacent row. The heel row of the first cone has at least equal the number of cutting elements as the heel rows of the other cones. The adjacent row of the second cone has at least 90 percent as many cutting elements as the heel row of the first cone. The heel row of the third cone has a pitch that is in the range from 20-50% greater than the heel rows of the first cone. | ||||||
| 131 | ANTI-TRACKING FEATURE FOR ROCK BITS | EP09735461.7 | 2009-04-21 | EP2297423A2 | 2011-03-23 | BUSKE, Robert, J.; OVERSTREET, James, L.; PESSIER, Rudolf, Carl |
| The harmful effects of tracking are reduced for a drill bit having roller cones (29) with at least one of the outermost rows (51) of active teeth (35) containing one or more teeth (35) having a height (65) that does not extend to the height (67) of at least one of the outermost rows on another roller cone on the bit. The crest (63) on this tooth (35) may have a length (58) in a circumferential direction that is wider than an overall width (69) of the tooth (35) in the outer to inner direction. The invention may be used on any cutter row, not just the outermost row (51). The design may be used on a different roller cone or row, or more than one cutter row. The anti-tracking feature may be located between the leading and trailing edges (201) of the tooth (201) on one or more roller cones. | ||||||
| 132 | ORIENTED PYRAMID INSERTS | EP08866510.4 | 2008-12-22 | EP2231994A2 | 2010-09-29 | PESSIER, Rolf Carl; FELDERHOFF, Floyd; BUSKE, Robert J. |
| An earth boring drill bit comprising cones, each cone having rows of inserts, where the inserts are in the form of a pyramid with four sides. The insert includes ridges at the juncture of each adjacent side. The ridges extend to the top of the insert and meet at a crest. Oppositely disposed ridges on the insert lie substantially in the same plane, thereby forming two planes intersecting on the crest. The two planes are substantially perpendicular. The inserts are arranged on the cone such that one plane is substantially parallel with the insert row, and the other is substantially parallel with the cone axis. | ||||||
| 133 | IMPREGNATED ROTARY DRAG BIT AND RELATED METHODS | EP08843624.1 | 2008-10-31 | EP2220331A2 | 2010-08-25 | MCCLAIN, Eric, E.; SKEEM, Marcus, R. |
| A drill bit (100) is provided that employs a plurality of discrete, post-like, abrasive, particulate-impregnated cutting structures (118) extending upwardly from the bit face. The cutting structures may be disposed on abrasive, particulate-impregnated blades (108) that also define a plurality of fluid passages (116) on the bit face (106). One or more of the cutting structures may include outermost ends that exhibit a cross-sectional geometry that is elongated in a direction along a defined axis. The cutting structures may be oriented such that the defined axis (132) is neither coplanar with, nor parallel to, an intended rotational path of the at least one discrete cutting structure during operation of the bit. In one embodiment, the cutting structure is oriented such that the defined axis is at an acute angle relative to a tangent of the intended rotational path for the associated cutting structure. Other or different features may include, for example, additional, differently configured cutting elements. | ||||||
| 134 | ROLLER-CONE BITS, SYSTEMS, DRILLING METHODS, AND DESIGN METHODS WITH OPTIMIZATION OF TOOTH ORIENTATION | EP99945376.4 | 1999-08-31 | EP1117894B2 | 2010-03-03 | CHEN, Shilin |
| 135 | ANTI-TRACKING EARTH BORING BIT WITH SELECTED VARIED PITCH FOR OVERBREAK OPTIMIZATION AND VIBRATION REDUCTION | EP05705945.3 | 2005-01-13 | EP1709282A2 | 2006-10-11 | Aaron, Anna Victorovna; Lytvynenko, Viktor |
| An earth boring drill bit is constructed having rotatable cutter for forming a borehole in earth. At least one circumferential row of cutting elements is optimized to create overbreak of rock and eliminate tracking, wherein selected pitches have mathematically determined pairs and the absolute difference between the selected pitch and its pair is greater than 10 % of the difference between maximum and minimum pitch for that circumferential row. Furthermore, cutting elements are placed along pre-selected generatrices with deviated from said generatrices, which is less than half the maximum pitch of circumferential rows occupied by said cutting element. The present invention eliminates tracking and reduces detrimental axial resonance frequency vibration while reducing cutting element count, including tungsten - carbide inserts, as compared to conventional roller cutter drill bits used for oil, gas and shot hole drilling wells and simultaneously increases footage drilled, drilling speed, and durability. | ||||||
| 136 | Indicator for bearing failure of rolling cutter drill bit | EP01306210.4 | 2001-07-19 | EP1182326B1 | 2006-06-07 | Skyles, Lane P |
| 137 | Method of designing a roller-cone drill bit. | EP04025235.5 | 1999-08-31 | EP1498575A3 | 2006-05-17 | Chen, Shilin |
Disclosed herein is a method for designing a roller cone drill bit having a plurality of roller cones and initial design parameters, comprising: simulating drilling an earth formation with the bit and determining as a result of the simulating, a drilling parameter of the bit; adjusting at least one of the initial design parameters; repeating the simulating drilling; and repeating the adjusting, the simulating and the determining until the drilling parameter is optimised. |
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| 138 | Method of designing a roller cone bit | EP04025562.2 | 1999-08-31 | EP1500783A2 | 2005-01-26 | Chen, Shilin |
Disclosed herein is a method of designing a roller cone bit, comprising the steps of:
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| 139 | Method of designing a roller cone bit | EP04025561.4 | 1999-08-31 | EP1500782A2 | 2005-01-26 | Chen, Shilin |
Disclosed herein is a method of designing a roller cone bit, comprising the steps of:
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| 140 | Method of designing a roller cone bit | EP04025560.6 | 1999-08-31 | EP1500781A2 | 2005-01-26 | Chen, Shilin |
Disclosed herein is a method of designing a roller cone bit, comprising the steps of:
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