- E21B10/083： ..{带纵向轴,例如,摆动或者章动牙轮钻头(纵轴牙轮扩孔器入E21B10/30)}
- E21B10/086： ..{具有偏心运动的}
- E21B10/10： ..带两端支撑的牙轮轴的(带盘刀的入E21B10/12)
- E21B10/12： ..带盘刀的
- E21B10/14： ..结合不带导向部件的非滚动刀具
- E21B10/16： ..以齿形或排列为特征的
- E21B10/18： ..以钻井液导管或喷嘴为特征的(钻井液向轴承的供应入E21B10/23)
- E21B10/20： ..以可拆卸或可调节部件为特征的,例如,脚架或轴(十字轴牙轮钻头入E21B10/10)
- E21B10/22： ..以轴承、润滑或密封零件为特征的
| 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 | A method for reducing residual stress in a roller cone bit | EP09007820.5 | 2006-07-14 | EP2101037B1 | 2012-12-05 | Zahradnik, Anton F.; Jones, Ronnie L.; Nguyen, Don Q.; Ricks, Gregory L.; Beuershausen, Christopher G.; Sullivan, Eric C. |
| 62 | METHODS, SYSTEMS, AND DEVICES FOR MANIPULATING CUTTING ELEMENTS FOR EARTH BORING DRILL BITS AND TOOLS | EP10741596.0 | 2010-02-08 | EP2396495A2 | 2011-12-21 | LUCE, David, Keith; WIRTH, Sean, W.; MASSEY, Alan, J.; PARROTT, Crystal, A. |
| Methods include one or more of robotically positioning a cutting element on an earth-boring tool, using a power-driven device to move a cutting element on an earth-boring tool, and robotically applying a bonding material for attaching a cutting element to an earth-boring tool. Robotic systems are used to robotically position a cutting element on an earth-boring tool. Systems for orienting a cutting element relative to a tool body include a power-driven device for moving a cutting element on or adjacent the tool body. Systems for positioning and orienting a cutting element on an earth-boring tool include such a power-driven device and a robot for carrying a cutting element. Systems for attaching a cutting element to an earth-boring tool include a robot carrying a torch for heating at least one of a cutting element, a tool body, and a bonding material. | ||||||
| 63 | HARDFACING AROUND BALL LOADING HOLE FOR EARTH-BORING BIT | EP08725886.9 | 2008-02-21 | EP2126272B1 | 2011-11-23 | Massey, Alan, J.; Nehring, Keith, L.; Luce, David, K. |
| A rotary cone earth boring bit has at least one bit leg (17) with a cone retaining ball passage (35) that intersects an outer surface of the bit leg and is closed by a ball plug (37). An upwardly curved lower hardfacing bead (41) is on the outer surface of the bit leg at least partially below the ball plug. A downwardly curved upper hardfacing bead (47) is on the outer surface of the bit leg at least partially above the ball plug. The upper hardfacing bead has leading and trailing ends that join the lower hardfacing bead. The upper and lower hardfacing beads define a generally elliptical perimeter (49) surround the ball plug. At least one transverse bead (53) is above the upper hardfacing bead and leads generally upwardly and circumferentially from a leading edge of the bit leg to a trailing edge of the bit leg. | ||||||
| 64 | Method and apparatus for monitoring and recording of operating conditions of a downhole drill bit during drilling operations | EP05077688.9 | 1996-02-12 | EP1632644B1 | 2011-05-25 | Zaleski, Theodore E., Jr; Schmidt, Scott R. |
| 65 | Roller cone drill bit, method of designing the same and rotary drilling system | EP03021139.5 | 1999-08-31 | EP1371811B1 | 2011-03-30 | Chen, Shilin |
| 66 | A method for reducing residual stress in a roller cone bit | EP09007819.7 | 2006-07-14 | EP2101036A1 | 2009-09-16 | Zahradnik, Anton F.; Jones, Ronnie L.; Nguyen, Don Q.; Ricks, Gregory L.; Beuershausen, Christopher G.; Sullivan, Eric C. |
A roller cone bit comprising stress reduction means for reducing residual stress at the barrier (e.g., weld) (29) and the perimeter area (23) of the head (15) adjacent the outer diameter to increase the service load capacity and the service life of the roller cone bit. The stress reduction means comprises an inner weld (31) formed from a first material adjacent the ball plug (27). The weld (29)is formed on the inner weld (31) from a second material that has a higher strength than the first material.
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| 67 | DISCRETE ELEMENT MODELING OF ROCK DESTRUCTION UNDER HIGH PRESSURE CONDITIONS | EP07862347.7 | 2007-11-29 | EP2089605A2 | 2009-08-19 | LEDGERWOOD, Leroy W. |
| Discrete Element Modeling (DEM) of rock subject to high confining pressures, such as in a subterranean drilling environment, may be used to predict performance of cutting structures used in drill bits and other drilling tools, as well as of the tools themselves. DEM may also be used to create 'virtual' rock exhibiting specific drillability characteristics with or without specific reference to any actual rock, for purposes of assessing cutting efficiency of various cutting structure configurations and orientations, as well as of drilling tools incorporating same. | ||||||
| 68 | Method and apparatus for monitoring and recording of operating conditions of a downhole drill bit during drilling operations | EP05077687.1 | 1996-02-12 | EP1632643A3 | 2007-07-25 | Zaleski, Theodore E., Jr; Schmidt, Scott R. |
The present invention is directed to an improved method and apparatus for monitoring and recording of operating conditions of a downhole drill bit during drilling operations. The invention may be alternatively characterized as either (1) an improved downhole drill bit, or (2) a method of monitoring at least one operating condition of a downhole drill bit during drilling operations in a wellbore, or (3) a method of manufacturing an improved downhole drill bit. When characterized as an improved downhole drill bit, the present invention includes (1) an assembly including at least one bit body, (2) a coupling member formed at an upper portion of the assembly, (3) at least one operating conditioning sensor carried by the improved downhole drill bit for monitoring at least one operating condition during drilling operations, and (4) at least one memory means, located in and carried by the drill bit body, for recording in memory data pertaining to the at least one operating condition. Optionally, the improved downhole drill bit of the present invention may cooperate with a communication system for communicating information away from the improved downhole drill bit during drilling operations, preferably ultimately to a surface location. The improved downhole drill bit of the present invention may further include a processor member, which is located in and carried by the drill bit body, for performing at least one predefined analysis of the data pertaining to the at least one operating condition, which has been recorded by the at least one memory means.
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| 69 | Method of designing a roller cone bit | EP04025562.2 | 1999-08-31 | EP1500783A3 | 2006-04-12 | Chen, Shilin |
Disclosed herein is a method of designing a roller cone bit, comprising the steps of:
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| 70 | Method of designing a roller cone bit | EP04025561.4 | 1999-08-31 | EP1500782A3 | 2006-04-12 | Chen, Shilin |
Disclosed herein is a method of designing a roller cone bit, comprising the steps of:
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| 71 | Roller-cone bits, systems, drilling methods, and design methods with optimization of tooth orientation | EP04025232.2 | 1999-08-31 | EP1498572A3 | 2006-04-12 | Chen, Shilin |
Disclosed herein is a method for optimising drilling performance of a roller cone drill bit, comprising simulating drilling with the bit in a selected earth formation to determine at least one drilling performance parameter, adjusting, an orientation of at least one non-axisymmetric cutting element on the bit, repeating the simulating the drilling and determining the at least one performance parameter, and repeating the adjusting and simulating the drilling until the at least one performance parameter is determined to be at an optimum value.
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| 72 | Method and apparatus for monitoring and recording of operating conditions of a downhole drill bit during drilling operations | EP05077688.9 | 1996-02-12 | EP1632644A2 | 2006-03-08 | The designation of the inventor has not yet been filed |
The present invention is directed to an improved method and apparatus for monitoring and recording of operating conditions of a downhole drill bit during drilling operations. The invention may be alternatively characterized as either (1) an improved downhole drill bit, or (2) a method of monitoring at least one operating condition of a downhole drill bit during drilling operations in a wellbore, or (3) a method of manufacturing an improved downhole drill bit. When characterized as an improved downhole drill bit, the present invention includes (1) an assembly including at least one bit body, (2) a coupling member formed at an upper portion of the assembly, (3) at least one operating conditioning sensor carried by the improved downhole drill bit for monitoring at least one operating condition during drilling operations, and (4) at least one memory means, located in and carried by the drill bit body, for recording in memory data pertaining to the at least one operating condition. Optionally, the improved downhole drill bit of the present invention may cooperate with a communication system for communicating information away from the improved downhole drill bit during drilling operations, preferably ultimately to a surface location. The improved downhole drill bit of the present invention may further include a processor member, which is located in and carried by the drill bit body, for performing at least one predefined analysis of the data pertaining to the at least one operating condition, which has been recorded by the at least one memory means.
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| 73 | Rock bit cutter retainer | EP97308197.9 | 1997-10-16 | EP0837215B1 | 2006-01-18 | Price, Randall R. |
| 74 | Method of designing a roller-cone drill bit. | EP04025235.5 | 1999-08-31 | EP1498575A2 | 2005-01-19 | 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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| 75 | WELLBORE PRIMARY BARRIER AND RELATED SYSTEMS | EP00907833.8 | 2000-03-07 | EP1159510B1 | 2004-08-04 | ROBERTS, John, D.; DRECHSLER, Jan; SALVERSEN, Tom; UNSGAARD, Tom; ENERSTVEDT, Eirik; BLIZZARD, William, A., Jr.; LANGFORD, Dale, A.; CARTER, Thurman, B. |
| A new wellbore apparatus has been invented which, in certain aspects, has anchor apparatus (42) for anchoring the wellbore apparatus in a bore, the anchor apparatus actuated by fluid under pressure supplied thereto, and sealing apparatus (40) selectively inflatable to close off the bore to fluid flow there through, and temperature compensating apparatus (48) for maintaining a desired fluid pressure in the sealing apparatus to prevent it from bursting or deflating. | ||||||
| 76 | Force-balanced roller-cone bits, systems, drilling methods, and design methods | EP03021140.3 | 1999-08-31 | EP1389666A2 | 2004-02-18 | Chen, Shilin |
A method of designing a roller cone drill bit is disclosed. The method comprises:
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| 77 | Roller cone drill bit, method of designing the same and rotary drilling system | EP03021139.5 | 1999-08-31 | EP1371811A3 | 2004-01-02 | Chen, Shilin |
A method of designing a roller cone bit is disclosed. The method comprises the steps of:
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| 78 | ROTARY CONE DRILL BIT WITH ANGLED RAMPS | EP95943014 | 1995-12-06 | EP0796385A4 | 2000-09-06 | HUFFSTUTLER ALAN DEE; CAMPOS HARRY MORALES JR |
| A rotary cone drill bit for forming a borehole having a bit body with an upper end portion adapted for connection to a drill string. A number of support arms extend from the bit body. Each support arm has an exterior surface. A number of cutter cone assemblies equal to the number of support arms are mounted respectively on the support arms and project generally downwardly and inwardly with respect to an associated support arm. A ramp is formed on the exterior surface of the support arm and is inclined at an angle from a leading edge of the support arm toward a trailing edge of the support arm such that the ramp directs cuttings upward in the borehole. | ||||||
| 79 | A DRILLING APPARATUS | EP97903156 | 1997-02-26 | EP0883730A4 | 2000-08-02 | MOLLOY ANTHONY JOHN |
| The invention provides an excavation bit (10) which is constructed from either a single or double carrier. If two carriers (14 and 15) are present the carriers (14, 15) are contra-rotating. By the off setting of the axes of rotation (17 and 18) of single or dual carriers from a longitudinal axis (22) of the bit (10) and by driving the carriers to rotate, a ground engaging thrust is produced, as well as the rotation of the excavation bit (10) in the ground as a consequence of the rotation of the carriers, and not vice versa as is the case with prior art. By the invention, there can result sufficient thrust on the bit (10) by the rotation of the carriers (14 and 15) so that the need to apply thrust down the bore via the drill rod is reduced or eliminated. As a result of the invention the number and/or size of the ground engaging tools (25) are not a function of the bore diameter to be drilled. Thus as the excavation bit is scaled up for larger diameter bores more ground engaging tools (25) and/or an increase in their size is not required. By the invention, thrust applied (either via the drill rod or from the rotation of the carriers) is thought to be, through a quasi lever system, multiplied at some of the ground engaging tools in the radial direction. That is the total thrust in the longitudinal axis direction (whether externally applied or resultant from the contra-rotation of the carriers), is multiplied so that the outward forces exerted (by the cutters onto the rock surface in the region approaching perpendicular to the longitudinal axis of the bore) is thought to be significantly higher than the magnitude of the total thrust. | ||||||
| 80 | Rock bit cutter retainer | EP97308197.9 | 1997-10-16 | EP0837215A3 | 1999-03-17 | Price, Randall R. |
A novel split threaded ring bearing member (42) for rolling cutter drill bits with at least a portion of its threads (48) having a different pitch than its mating threads (40) is disclosed. The pitch difference is designed so that the threaded ring can be seated or otherwise located precisely with respect to the other bearing elements within the drill bit to effectively control the axial displacement of the rolling cutter (18) on the bearing spindle (16) within a given tolerance range. Upon assembly, the difference in thread pitch causes the opposite, opposing mating thread flanks to engage, effectively applying a tensile or compressive force to a portion of the threaded ring bearing member (42), which gradually increases as the assembly is tightened. The result is an improved rolling cutter drill bit with a threaded ring cutter bearing system with excellent resistance to back-off which will not allow significant radial movement between the engaged threads, even if some back-off of the threads occurs. |
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