| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 61 | Impregnated drill bits with integrated reamers | US13177427 | 2011-07-06 | US08991524B2 | 2015-03-31 | Cody A. Pearce; Christian M. Lambert; Michael D. Rupp |
| Drilling tools include a bit crown and an integrated reamer. The bit crown and the integrated reamer can be configured with approximately equal drilling lives. The bit crown can be impregnated with abrasive cutting media and include one or more external flutes. The integrated reamer can be positioned at the base the bit crown and include one or more channels that align with one or more of the outer flutes. The channels can taper such that they increase in width as they extend away from the bit crown. | ||||||
| 62 | REAMER BLADES EXHIBITING AT LEAST ONE OF ENHANCED GAGE CUTTING ELEMENT BACKRAKES AND EXPOSURES AND REAMERS SO EQUIPPED | US14020353 | 2013-09-06 | US20150068813A1 | 2015-03-12 | Mario Moreno, II; James D. Enterline |
| A downhole tool configured to enlarge a borehole may include at least one blade extending laterally from a central portion of the tool. The one or more blades may each include a gage portion, and cutting elements comprising substantially circular cutting faces may be affixed to each of the one or more blades. Each of the one or more cutting elements may include a cutting edge comprising an arcuate peripheral cutting face portion for contacting the borehole. Cutting faces of at least one cutting element on a gage portion of the at least one blade may exhibit a cutting face back rake angle greater than a cutting face back rake angle of cutting elements on at least one other portion of the at least one blade. | ||||||
| 63 | Drill Bit with Self-Adjusting Pads | US13864926 | 2013-04-17 | US20140311801A1 | 2014-10-23 | Jayesh R. Jain; Juan Miguel Bilen |
| In one aspect, a drill bit is disclosed that in one embodiment includes a bit body and a pad that extends from a retracted position to an extended position from a bit surface at a first rate and retracts from the extended position to a retracted position at a second rate that is less than the first rate. | ||||||
| 64 | Compliantly coupled gauge pad system | US13176656 | 2011-07-05 | US08746368B2 | 2014-06-10 | Ashley Bernard Johnson; Geoffrey C. Downton; John M. Cook |
| A drill bit system for a drilling assembly is disclosed. The drill bit system may include a chassis, a head, and one or more compliantly coupled gauge pads. The head may include a first plurality of cutters coupled with an end of the head, and the head may be coupled with chassis. The one or more gauge pads may include a second plurality of cutters, and the one or more gauge pads may be movably coupled with the chassis. | ||||||
| 65 | TRICONE ROCK BIT FOR HORIZONTAL WELLS AND HARD FORMATION WELLS | US14149188 | 2014-01-07 | US20140116787A1 | 2014-05-01 | Zengyuan Shao; Bin Pu; Xiaobing Fan |
| A tricone rock bit for horizontal wells and hard formation wells includes three head sections and three cones arranged at the lower ends of the head sections, where the supper parts of the three head sections are connected together to form one integrated drill bit body; jet nozzle bosses are arranged between the head sections on the drill bit body; jet nozzles are mounted in nozzle holes of the jet nozzle bosses; gauge cutting elements are arranged on the top rear of the OD of the head sections, forming a gauge surface on the top of the head sections; the front face of the head sections is a ruled surface, inclining backwards at an angle α, and inclining outwards at an angle β. The tricone rock bit has low lateral vibrations, high stability, good effects of bottom hole cleaning and cutting element cooling, long service life and high penetration rate. | ||||||
| 66 | INNER GAUGE RING DRILL BIT | US13774591 | 2013-02-22 | US20130228382A1 | 2013-09-05 | Richard J. SAUVAGEAU |
| A drill bit comprises a plurality of annular blades coupled to a bit body. A plurality of gauge pads is coupled to the bit body and defines an outer cutting diameter. A circumferentially continuous gauge ring is coupled to the bit body and defines an inner cutting diameter. An inner cutting structure is coupled to the bit body and has a cutting diameter substantially equal to the inner cutting diameter. | ||||||
| 67 | Superabrasive inserts including an arcuate peripheral surface | US13606318 | 2012-09-07 | US08505655B1 | 2013-08-13 | Eric C. Pope |
| Superabrasive inserts are disclosed. More particularly, a superabrasive insert may comprise a superabrasive layer bonded to a substrate at an interface. Further, the superabrasive layer may include a central substantially planar surface, a peripheral side surface, and an arcuate peripheral surface extending between the central substantially planar surface and the peripheral side surface. In one embodiment, the arcuate peripheral surface may comprise a lateral extent and an extension depth, wherein a ratio of the lateral extent to the extension depth is at least about 1.5. In another embodiment, an arcuate peripheral surface may comprise a substantially circular arc, wherein the substantially planar surface is tangent to the substantially circular arc and a tangent reference line to the substantially circular arc forms an angle of at least about 10° with the peripheral side surface. Subterranean drilling tools (e.g., drill bits) including at least one superabrasive insert are disclosed. | ||||||
| 68 | Rotary drill bit with gage pads having improved steerability and reduced wear | US13288649 | 2011-11-03 | US08356679B2 | 2013-01-22 | Shilin Chen; Riun Ashlie |
| A rotary drill bit having blades with gage pads disposed on exterior portions thereof to improve steerability of the rotary drill bit during formation of a directional wellbore without sacrifice of lateral stability. One or more of the gage pads may include radially tapered exterior portions and/or cut out portions to assist with reducing wear of the associated gage pad. For some applications, a rotary drill bit may be formed having blades with gage pads having a relatively uniform exterior surface. Hard facing material and/or buttons may be disposed on exterior portions of the gage pad to form a radially tapered portion to improve steerability, reduce wear of the gage pad and/or improve ability of the rotary drill to form a wellbore having a generally uniform inside diameter, particularly during directional drilling of the wellbore. | ||||||
| 69 | DOWNHOLE DRILLING ASSEMBLY | US13257620 | 2010-03-19 | US20120111640A1 | 2012-05-10 | Andrew McPherson Downie; Pascal Michel Vitale; Bachar Boussi |
| A downhole stabiliser (5), such as a drill motor stabiliser, comprises at least one reaming means and/or reinforcing means (10). The present invention also relates to an assembly (30), such as a downhole drilling assembly (31), comprising at least one such stabiliser (5) and/or a drill bit (40,41) comprising a gauge bit (42) at or near a drilling end (45) thereof, and a connection means (46) for connecting the drill bit (40,41) to a drill motor assembly (60), wherein the drill bit gauge (42) comprises a substantially cylindrical portion having a length less than or equal to approximately 1.0 times the nominal bit diameter. The present invention also relates to a novel locking mechanism (80), such as a lock and key mechanism, to allow locking of a shaft (70′), e.g. a motor drive shaft (71′), through or together with a stabiliser (5′). | ||||||
| 70 | IMPREGNATED DRILL BITS WITH INTEGRATED REAMERS | US13177427 | 2011-07-06 | US20120061146A1 | 2012-03-15 | Cody A. Pearce; Christian M. Lambert; Michael D. Rupp |
| Drilling tools include a bit crown and an integrated reamer. The bit crown and the integrated reamer can be configured with approximately equal drilling lives. The bit crown can be impregnated with abrasive cutting media and include one or more external flutes. The integrated reamer can be positioned at the base the bit crown and include one or more channels that align with one or more of the outer flutes. The channels can taper such that they increase in width as they extend away from the bit crown. | ||||||
| 71 | COMPLIANTLY COUPLED GAUGE PAD SYSTEM | US13176656 | 2011-07-05 | US20120018224A1 | 2012-01-26 | Ashley Bernard Johnson; Geoffrey C. Downton; John M. Cook |
| A drill bit system for a drilling assembly is disclosed. The drill bit system may include a chassis, a head, and one or more compliantly coupled gauge pads. The head may include a first plurality of cutters coupled with an end of the head, and the head may be coupled with chassis. The one or more gauge pads may include a second plurality of cutters, and the one or more gauge pads may be movably coupled with the chassis. | ||||||
| 72 | Fixed cutter bit with backup cutter elements on secondary blades | US12416202 | 2009-04-01 | US08100202B2 | 2012-01-24 | Bala Durairajan; Carl M. Hoffmaster; Michael G. Azar; Kurt T. Bush |
| In an embodiment, a drill bit for drilling a borehole comprises a bit body having a bit axis and a bit face. In addition, the drill bit comprises a primary blade extending radially along the bit face. Further, the drill bit comprises a plurality of primary cutter elements mounted to the primary blade. The primary blade is free of backup cutter elements. Still further, the drill bit comprises a secondary blade extending radially along the bit face. Moreover, the drill bit comprises a plurality of primary cutter elements mounted to the secondary blade. In addition, the drill bit comprises a first plurality of backup cutter elements mounted to the secondary blade in a first backup row that trails the primary row. Further, the drill bit comprises a second plurality of backup cutter elements mounted to the secondary blade in a second backup row that trails the first backup row. | ||||||
| 73 | Rotary drill bits with gage pads having improved steerability and reduced wear | US12600832 | 2008-05-27 | US08051923B2 | 2011-11-08 | Shilin Chen; Riun Ashlie |
| A rotary drill bit having blades with gage pads disposed on exterior portions thereof to improve steerability of the rotary drill bit during formation of a directional wellbore without sacrifice of lateral stability. One or more of the gage pads may include radially tapered exterior portions and/or cut out portions to assist with reducing wear of the associated gage pad. For some applications, a rotary drill bit may be formed having blades with gage pads having a relatively uniform exterior surface. Hard facing material and/or buttons may be disposed on exterior portions of the gage pad to form a radially tapered portion to improve steerability, reduce wear of the gage pad and/or improve ability of the rotary drill to form a wellbore having a generally uniform inside diameter, particularly during directional drilling of the wellbore. | ||||||
| 74 | Segmented Downhole Tool | US12710470 | 2010-02-23 | US20110203852A1 | 2011-08-25 | Barry D. Calnan |
| A downhole tool includes a plurality of segments positioned on a core member. This construction is particularly suitable for sleeves, stabilizers and drill bit gage pads used in the formation of oil and gas wells. Worn or damaged segments can be replaced without the need for replacing the entire unit. The segments may include spiral vanes for directed fluid upwardly to the well head. | ||||||
| 75 | MATRIX TURBINE SLEEVE AND METHOD FOR MAKING SAME | US12239915 | 2008-09-29 | US20100078222A1 | 2010-04-01 | Harold A. Sreshta; Hector Adrian Sanchez; Eric F. Drake; Neerali Janubhai Desai |
| A turbine matrix sleeve in accordance with the invention includes an inner cylindrical structure made up of a first material. The inner cylindrical structure may include multiple blades and multiple channels running between the blades along an outside diameter thereof. The inner cylindrical structure further includes threads, such as right-hand or left-hand threads, on an outer surface thereof. An outer layer, made up of a second material different from the first material, is integrally bonded to the threads. This outer layer may be optionally embedded with hardened inserts or buttons, such as PDC inserts, diamond inserts, TSP inserts, or the like. The threaded surface on the inner cylindrical structure significantly improves the bond between the outer layer and the inner cylindrical structure and creates a mechanical lock therebetween. | ||||||
| 76 | COMPLIANTLY COUPLED GAUGE PAD SYSTEM WITH MOVABLE GAUGE PADS | US12191230 | 2008-08-13 | US20100038141A1 | 2010-02-18 | Ashley Bernard Johnson; Geoffrey C. Downton; John M. Cook |
| A drill bit system for a drilling assembly is disclosed. The drill bit system may include a chassis, a head, and one or more gauge pads. The head may include a first plurality of cutters coupled with an end of the head, and the head may be coupled with chassis. The one or more gauge pads may include a second plurality of cutters, and the one or more gauge pads may be movably coupled with the chassis. | ||||||
| 77 | COMPLIANTLY COUPLED CUTTING SYSTEM | US12191172 | 2008-08-13 | US20100038139A1 | 2010-02-18 | Ashley Bernard Johnson; Geoffrey C. Downton; John M. Cook |
| A drill bit system for a drilling assembly is disclosed. The drill bit system may include a chassis, a head, and a first plurality of gauge pads. The head may include a first plurality of cutters coupled with an end of the head, and the head may be movably coupled with chassis. The first plurality of gauge pads may include a second plurality of cutters, and the first plurality of gauge pads may be fixedly coupled with the chassis. | ||||||
| 78 | Tri-cone bits for horizontal and hard formation drilling applications | US12462211 | 2009-07-29 | US20100032215A1 | 2010-02-11 | Zengyuan Shao; Bin Pu; Xiaobing Fan |
| The present invention discloses a tri-cone drill bit comprising: three head sections with upper parts thereof jointed together to form a bit body, three cones rotatably mounted to lower ends of the head sections respectively, nozzle sockets designed on the bit body between respective head sections and each having a hole in which a nozzle is mounted, wherein gage cutters are mounted to an upper trailing side of each head O.D. surface to form a gage holding surface thereon, and a leading side of each head section is backwardly slanted as a whole. The design of gage surface at trailing sides of head sections increases the bit's stability, reduces lateral vibration and also reduces tendency of bit deflection in horizontal drilling applications and effective working life of the bit is improved. Backward slant of leading sides of head sections facilitates upward carrying of drilling cuttings and improves drilling efficiency. Jets from the nozzles are respectively directed to the leading side of each following cone, which enhances bottom hole cleaning and cooling of cutting elements and leads to a longer working life and higher ROP of the bit. | ||||||
| 79 | Low projection inserts for rock bits | US11204063 | 2005-08-15 | US07600590B2 | 2009-10-13 | Floyd C. Felderhoff; Brian A. Baker; Rudolf C. Pessier; Jimmy W. Eason |
| An earth boring bit has an outer row of inserts located within extra deep holes. Each of the holes has a cylindrical sidewall with a depth greater than the length of the barrel of the insert mounted within. The difference in depth is at least equal to a distorted entry zone in the hole. A portion of the sidewall that includes the entry zone surrounds the cutting end, reducing the projection of the cutting end from the land. | ||||||
| 80 | Reamer With Stabilizers For Use In A Wellbore | US12341263 | 2008-12-22 | US20090166093A1 | 2009-07-02 | Rudolf Carl Pessier; Robert J. Buske; James Overstreet |
| A reamer bit for use in earth boring operations comprising a body, cutter mounts having rolling cutters on the bit body, and stabilizers pads on the body placed between adjacent cutter mounts. The reamer may further include a pilot bit on a drill pipe extending downward from the reamer body. The reamer bit outer periphery with its stabilizers and bit body has a radial profile approximating a circle thereby reducing dynamic perturbations during drilling operations. | ||||||
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