| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 175339000 | With drilling fluid conduit details | 23 |
| 20080236899 | Shrink fit sleeve assembly for a drill bit, including nozzle assembly and method thereof - A shrink-fit sleeve assembly comprising a bit body includes at least one sleeve port with a substantially tubular sleeve disposed therein and interferingly engaged therewith. The sleeve port includes an internal surface of substantially circular cross-section, and the tubular sleeve includes an internal nozzle port and an external surface of substantially circular cross-section. A lateral dimension of the external surface is equal to or greater than the first dimension at ambient temperature. A nozzle assembly and a method of manufacturing or retrofitting a drill bit are also disclosed. | 10-02-2008 |
| 20090152012 | MICROTUNNELLING SYSTEM AND APPARATUS - A microtunnelling apparatus and system that includes an external drive system having rotational and linear thrust drive means, a drill head section having drill rotor and drill rod and connecting to intermediate drill rods allowing extension of the boring hole created by the drill head section driven by the drive system. The drill head includes a modular construction having a plurality of circular disc like elements, a bearing module, a steering module, a spacer module, and a mounting module, for axial alignment and abutment and mounting within a cylindrical steering shell. Directional steering of the drill head includes a plurality of substantially radially extending channels in steering module, each with an hydraulically movable protuberance movable by control means to redirect the outer steering casing and thereby redirect the drill head section mounted on the distal end of the drill rods. | 06-18-2009 |
| 20130256038 | ROLLER CONE DRILL BIT WITH CUTTINGS EVACUATOR - An earth boring drill bit having an alternate path to allow cuttings to be ejected or evacuated from the drill bit and up the bore hole is disclosed. The evacuation hole of the present disclosure allows larger sized cuttings to evacuate from the bit without having to be continually ground by rolling cone cutters until the cuttings are small enough to follow a path around the edge of the shirttail of the bit and up the borehole. A cuttings restrictor is disposed at the inlet of the evacuation hole. The cuttings restrictor ensures that only cuttings that are sized to move completely through the evacuation hole and exit the drill bit are allowed to enter the evacuation hole. | 10-03-2013 |
| 20150075873 | SUBSURFACE DRILLING TOOL - The present invention relates in general to subsurface drilling tools, and more specifically, to a drill bit comprising a ball shaped cutting tool. The drill bit is configured so that a plurality of cones, forming the ball shaped cutting tool, rotate in opposite directions around an axle while the drill bit is drilling or cutting through the ground, rock, or other material. The drilling or cutting is accomplished by a plurality of blade inserts that fit inside and protrude therefrom a plurality of holes covering the exterior of the ball shaped cutting tool. The purpose of the present invention is to provide a new and improved subsurface drilling tool that will efficiently drill hard rock formations. | 03-19-2015 |
| 175340000 | Fluid conduit lining or element (e.g., slush tube or nozzle) | 19 |
| 20090090561 | Nozzle Having A Spray Pattern For Use With An Earth Boring Drill Bit - An earth boring drill bit having a cleaning nozzle for cleaning cutting elements on the face of the drill bit. A notch is included on the nozzle face for directing an elongated and coherent fluid flow from the nozzle outlet to the cutting element face. The nozzle face may include more than one notch for cleaning elements disposed in locations around the nozzle. The nozzle may be at the ends of a row of cutting elements, or disposed in the middle of a row of cutting elements. | 04-09-2009 |
| 20090095536 | ROCK BIT WITH HYDRAULIC CONFIGURATION - A drill bit for drilling through an earthen formation to form a borehole with a radius R. In an embodiment, the drill bit comprises a bit body having a central bit axis and including a pin end, an internal plenum, and a dome side. The dome side includes a central dome region extending from the bit axis to about 10% of the radius R and an intermediate dome region extending from the central region to about 50% of the radius R. In addition, the drill bit comprises an intermediate receptacle having a central axis and extending through the intermediate dome region. Further, the drill bit comprises a first and a second rolling cone, each including an intermediate cone region. A projection of the central axis of the intermediate receptacle passes between the intermediate regions of the first cone and the second cone. | 04-16-2009 |
| 20090152013 | EROSION RESISTANT FLUID PASSAGEWAYS AND FLOW TUBES FOR EARTH-BORING TOOLS, METHODS OF FORMING THE SAME AND EARTH-BORING TOOLS INCLUDING THE SAME - Flow tubes for earth-boring tools include hardfacing material for protecting the tubes from erosion due to the flow of fluid through a fluid passageway extending therethrough. Earth-boring tools include an erosion-resistant material covering a surface of a body of the tools for protecting the bodies from erosion due to the flow of fluid through a fluid passageway extending therethrough. Methods of forming earth-boring tools include forming a body having a fluid passageway extending therethrough and covering a surface of the body with a hardfacing material. The surface of the body may be located in a region susceptible to erosion when fluid is caused to flow through the fluid passageway. | 06-18-2009 |
| 20090159340 | ROCK BIT WITH VECTORED HYDRAULIC NOZZLE RETENTION SLEEVES - A drill bit for drilling through an earthen formation to form a borehole. In an embodiment, the drill bit comprises a bit body having a central axis, an internal plenum, and an underside. The underside includes an annular outer region. The bit body includes an outer receptacle extending from the plenum to the outer region. In addition, the drill bit comprises a first and a second cone cutter. Each cone cutter comprises an outer region distal the bit axis. Further the drill bit comprises an outer sleeve having an upstream end received by the outer sleeve receptacle and a through passage. The through passage includes an upstream section having an upstream axis and a downstream section having a downstream axis that is skewed at an angle α relative to the upstream axis. A projection of the downstream axis passes between the outer regions of the first and second cone cutters. | 06-25-2009 |
| 20090321145 | THREADED NOZZLE FOR A CUTTER BIT - A threaded nozzle for use in a cutter bit is disclosed. Threads are either machined into or pressed into a pressed powder nozzle then the nozzle is sintered. Threads of the nozzles of the present invention exhibit improved hardness and have a rougher surface finish than threads machined post-sintering. Shaping of the threads into the nozzle before sintering is also more economical and efficient than post-sintering machining. | 12-31-2009 |
| 20100089656 | Roller Cone Drill Bits with Improved Fluid Flow - Roller cone drill bits operable to form a borehole. A number of support arms may extend from each drill bit. A cutter cone assembly may be mounted on each support arm. A number of cutting elements or inserts may be disposed on an exterior surface of a cone assembly. A lifting surface may be formed on each support arm extending between a leading edge and a trailing edge of each support arm such that the lifting surfaces directs cuttings upward in a borehole. A wedge shaped portion may be formed on each support arm proximate the lifting surface and the trailing edge. An inlet to each lifting surface may be formed on the leading edge of each support arm. | 04-15-2010 |
| 20100147594 | REVERSE NOZZLE DRILL BIT - A drill bit design that employs reverse flow nozzles through which a portion of the drilling fluid is diverted. This reverse or upward flow of drilling fluid creates a condition by which the extraction of drilling sludge (combination of drilling fluid and drilling cuttings) in the cutting area of the drill bit is more efficient and has a greater amount of flow than designs of prior art. This increased flow has the effect of more efficiently removing damaging cuttings away from the drill cutters, lubricating the drill cutters more efficiently, and cooling the drill cutters more efficiently. The end result is increased drilling uptime, increased drilling speed, and less frequent drill bit catastrophic failures. | 06-17-2010 |
| 20100155147 | METHODS OF ENHANCING RETENTION FORCES BETWEEN INTERFERING PARTS, AND STRUCTURES FORMED BY SUCH METHODS - A shrink-fit sleeve assembly comprising a bit body includes at least one sleeve port with a substantially tubular sleeve disposed therein and interferingly engaged therewith. The sleeve port includes an internal surface of substantially circular cross-section, and the tubular sleeve includes an internal nozzle port and an external surface of substantially circular cross-section. A lateral dimension of an external surface is equal to or greater than a first dimension at ambient temperature. A nozzle assembly and a method of manufacturing or retrofitting a drill bit are also disclosed. | 06-24-2010 |
| 20100224418 | METHODS OF FORMING EROSION RESISTANT COMPOSITES, METHODS OF USING THE SAME, AND EARTH-BORING TOOLS UTILIZING THE SAME IN INTERNAL PASSAGEWAYS - A multi-layer precursor material for use in forming hardfacing on a tool including hard particles, metal particles and a polymer. Methods of forming a multi-layer precursor film. Methods of using a precursor material to form hardfacing on a tool, including brazing a precursor material onto a surface of the tool. Intermediate structures for use in forming earth-boring tools including a precursor material covering an internal surface of a body of the tools. Methods of forming earth-boring tools include forming a body having a fluid passageway extending therethrough and covering a surface of the body with a hardfacing material. The surface of the body may be located in a region susceptible to erosion when fluid is caused to flow through the fluid passageway. | 09-09-2010 |
| 20100276206 | Rotary Drill Bit - A rotary drill bit ( | 11-04-2010 |
| 20100288562 | NOZZLE WITH CHANNELS THAT IMPART AN ANGULAR MOMENTUM TO THE EXITING FLUID AND METHODS FOR MAKING AND USING SAME - Novel nozzles are disclosed that include flutes and/or baffles having cross-sections that undergo a rotation from a nozzle inlet to a nozzle outlet to produce fluid flows having a velocity profile including both linear and angular velocity components. | 11-18-2010 |
| 20100314175 | ROTARY DRILL BIT WITH NOZZLES DESIGNED TO ENHANCE HYDRAULIC PERFORMANCE AND DRILLING FLUID EFFICIENCY - A rotary drill bit having one or more fluid nozzles is provided. Each nozzle may include interior surfaces designed to optimize hydraulic performance and efficiency of fluid flowing through the nozzle. The interior surfaces cooperate with each other to minimize turbulent fluid flow through the respective nozzle. Each nozzle may also include a discharge port or outlet with at least one Coanda surface operable to direct fluid flow in a direction which optimizes efficiency of transferring fluid energy to adjacent portions of a wellbore. The orientation of fluid flow from each nozzle may be directed to optimize cleaning of associated cutting structures and/or to minimize or prevent balling of formation cuttings. | 12-16-2010 |
| 20110120780 | Method and Apparatus for a True Geometry, Durable Rotating Drill Bit - A rotating cone drill bit includes a plurality of mud nozzles extending from the bit body, which are thermally fitted by controlling the temperature differential of 300° F.-900° F. depending on the corresponding materials of the elements to be fitted, the amount of fit desired, and the diameters of the elements to be fitted and which provide substantially obstruction-free mud paths toward the wellbore bottom. The bit has a plurality of reduced diameter cutter assemblies, each having a journal projecting from a corresponding leg. The journal has at least two cylindrical bearing surfaces and an annular groove formed therebetween and a spindle. An annular retention segment is rotatably mounted in the groove. The retention segment has an outer radial surface engaging a portion of one of the bearing surfaces of the cone, and an energy beam welding area fusing substantially the entire engaging surfaces of the retention segment and the cone. | 05-26-2011 |
| 20120043137 | Rotary Drill Bit with Nozzles Designed to Enhance Hydraulic Performance and Drilling Fluid Efficiency - A rotary drill bit having one or more fluid nozzles is provided. Each nozzle may include interior surfaces designed to optimize hydraulic performance and efficiency of fluid flowing through the nozzle. The interior surfaces cooperate with each other to minimize turbulent fluid flow through the respective nozzle. Each nozzle may also include a discharge port or outlet with at least one Coanda surface operable to direct fluid flow in a direction which optimizes efficiency of transferring fluid energy to adjacent portions of a wellbore. The orientation of fluid flow from each nozzle may be directed to optimize cleaning of associated cutting structures and/or to minimize or prevent balling of formation cuttings. | 02-23-2012 |
| 20120193149 | DRILL BIT WITH ENHANCED HYDRAULICS AND EROSION-SHIELD CUTTING TEETH - Disclosed is a rolling cone drill bit with inner row cutting teeth having portions shielded with an erosion-resistant material that differs in material properties from the tooth's core portion that is more impact resistant. The tooth includes shielding on at least a portion of the upstream end and along portions of the flanking surfaces. It includes shield-free portions on the flanks between the root and the tooth crest. Most of the tooth's perimeter is made of the core material and is free of shielding. Gage row teeth may be angled and form a channel to direct drilling fluid from the gage region of the borehole to locations where the inner row teeth are generating most cuttings. Nozzles are provided with non-uniform orientations. | 08-02-2012 |
| 20120234606 | Timed Steering Nozzle on a Downhole Drill Bit - In one aspect of the present invention, a downhole rotary steerable system comprises a fluid path defined by a bore formed within a drill string component. A valve located within a wall of the bore which hydraulically connects the bore with a fluid cavity. A steering nozzle disposed on the drill string component and in communication with the fluid cavity. The valve is configured to control flow from the bore to the fluid cavity with an azimuthal sensing mechanism configured to determine the azimuth of the steering nozzle and instrumentation configured to control the valve based off of input from the azimuthal sensing mechanism. | 09-20-2012 |
| 20120298424 | Method and Apparatus for a True Geometry, Durable Rotating Drill Bit - A rotating cone drill bit includes a plurality of mud nozzles extending from the bit body, which are thermally fitted by controlling the temperature differential depending on the corresponding materials, the amount of fit desired, and the diameters of the elements to be fitted and which provide substantially obstruction-free mud paths toward the wellbore bottom. The bit has a plurality of reduced diameter cutter assemblies, each having a journal projecting from a corresponding leg. The journal has at least two cylindrical bearing surfaces and an annular groove formed therebetween and a spindle. An annular retention segment is rotatably mounted in the groove. The retention segment has an outer radial surface engaging a portion of one of the bearing surfaces of the cone, and an energy beam welding area fusing substantially the entire engaging surfaces of the retention segment and the cone. | 11-29-2012 |
| 20140116787 | TRICONE ROCK BIT FOR HORIZONTAL WELLS AND HARD FORMATION WELLS - 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. | 05-01-2014 |
| 20140216823 | NON-CYLINDRICAL NOZZLE SOCKET FOR DRILL BITS - A non-cylindrical nozzle socket and a downhole tool that includes a non-cylindrical nozzle socket. The non-cylindrical nozzle socket includes a base and a nozzle socket wall that extends outwardly from the base. The nozzle socket wall includes a distal end positioned away from the base. The distal end forms an opening larger than the area of the base. | 08-07-2014 |
