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51. 发明授权

US3442341A Tools for accurately programming the application of pulverizing energy 失效
标题翻译：精确编程推广能源应用的工具
公开(公告)号：US3442341A
公开(公告)日：1969-05-06
申请号：US3442341D
申请日：1966-06-09
申请人： GUY O CONNER
发明人： CONNER GUY O
IPC分类号： E21B4/00 , E21B10/08 , E21B9/10 , E21B9/24
CPC分类号： E21B4/006 , E21B10/08

54. 发明专利

IN150702B IMPROVED DRILL BIT WITH SUCTION JETS 未知
公开(公告)号：IN150702B
公开(公告)日：1982-11-20
申请号：IN1254CA1978
申请日：1978-11-21
申请人： INST FRANCAIS DU PETROLE
发明人： CHOLET H
IPC分类号： E21B19/18 , E21B10/18 , E21B9/10
摘要： A rotary drilling tool has a plurality of rollers, each of which is provided with a specific pair of jets comprising a flushing jet having a downwardly directed component and an upwardly directed eduction jet, these jets being formed on both sides of the plane defined by the bit axis and the roller axis, and the flushing jet being inclined by at least 20 DEG on said plane and substantially tangent to the active part of the roller.

55. 发明专利

GB2010358B ROLLER DRILL BIT 未知
公开(公告)号：GB2010358B
公开(公告)日：1982-03-24
申请号：GB7847408
申请日：1978-12-06
申请人： SKF KUGELLAGERFABRIKEN GMBH
IPC分类号： E21B10/16 , E21B10/22 , E21B10/25 , E21B9/10
摘要： A rotary drilling bit with conically shaped rotary cutters which are supported in bearings on the drilling bit body by a plurality of bearings. At least one seal is provided in each rotary cutter for separating the bearing cavities of the bearings.

56. 发明专利

CA1113924A EARTH BORING BIT WITH COMPOSITE ANTI-GALLING BEARING SURFACE 未知
公开(公告)号：CA1113924A
公开(公告)日：1981-12-08
申请号：CA336831
申请日：1979-10-02
申请人： DRESSER IND
发明人： WILLIAMSON ROBERT L , CLAMON ROBERT D
IPC分类号： E21B9/10
摘要： EARTH BORING BIT WITH COMPOSITE ANTI-GALLING BEARING SURFACE A rolling cone cutter earth boring bit is provided with a bearing system having a long lifetime, that will support heavy loading, that can withstand relatively high rotational speeds, that is compatible with temperature extremes, that may be operated under highly corrosive and abrasive conditions, and that will withstand pressure variations. At least one cantilevered bearing pin extends from the arm of the bit. A rolling cone cutter is rotatably mounted on the bearing pin. The bearing surface of one of the relatively rotatable members is grit-blasted to give it a roughened surface. A layer of low shear strength, high thermal conductivity material is applied to the roughened surface. A second layer of material is applied over the first layer. The second layer comprises a low strength, highly conformable material.

58. 发明专利

CA1109454A ROTARY ROCK BIT SEAL RECESS WASHER 未知
公开(公告)号：CA1109454A
公开(公告)日：1981-09-22
申请号：CA342585
申请日：1979-12-24
申请人： DRESSER IND
发明人： KOSKIE EARL T JR
IPC分类号： E21B10/22 , E21B10/25 , F16C33/78 , F16J15/00 , E21B9/10 , E21B9/35
摘要： ROTARY ROCK BIT SEAL RECESS WASHER A sealing system for a rotary rock bit retains lubricant inside the bit and acts as a barrier to the pulverized cuttings and other materials in the borehole to prevent the materials from entering the bearing area through the cone mouth opening of the rolling cone cutter. A protecting washer is positioned outside of an O-ring seal element in the gap between the base of the rolling cone cutter and the body of the earth boring bit. This protects the O-ring seal element from the hostile drilling environment and increases seal life. During assembly of the bit, a gauging station is established to measure the size of the gap that will exist when the rolling cone cutter is installed on the bit body. Protecting washers are provided in numerous thicknesses. Upon determining the size of the gap, a washer is selected that will allow the gap to be narrowed to a size that will restrict passage of most of the abrasive particles found in the drilling fluid. The protecting washer is pressed into a recess in the cone mouth opening of the rolling cone cutter.

59. 发明专利

CA1107715A STEEP ANGLE RAISE BIT 未知
公开(公告)号：CA1107715A
公开(公告)日：1981-08-25
申请号：CA332143
申请日：1979-07-19
申请人： DRESSER IND
发明人： MITCHELL HOWARD E
IPC分类号： E21B7/28 , E21B10/28 , E21B9/10 , E21B9/22
摘要： STEEP ANGLE RAISE BIT A raise bit for enlarging a pilot hole into a larger diameter hole by disintegrating the earth formations that surround the pilot hole is provided with a cutter arrangement that provides a continuous angle bottom configuration in the range of 134.degree. to 60.degree..

60. 发明专利

CA1105447A DRILLING BITS FOR PLASTIC FORMATIONS 未知
公开(公告)号：CA1105447A
公开(公告)日：1981-07-21
申请号：CA340433
申请日：1979-11-22
申请人： REED TOOL CO
发明人： JONES KENNETH W
IPC分类号： E21B10/16 , E21B10/54 , E21B9/10
摘要： Drilling bits are disclosed which are particularly efficient drilling devices when used in soft plastic underground formations which normally are difficult or impossible to drill with conventional drilling bits. The bits of this invention are characterized by having relief openings formed in the individual cutting elements to provide extrusion of the soft formation face into removable chips.

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