| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 175263000 | CUTTER ELEMENT LATERALLY SHIFTABLE BELOW GROUND (E.G., EXPANSIBLE) | 53 |
| 20100059283 | AMBIENT-ACTIVATED SWITCH FOR DOWNHOLE OPERATIONS - In some embodiments, an apparatus includes a radiation source to output radiation after power is supplied. The apparatus also includes a power source to supply power. The apparatus includes an ambient-activated switch electrically coupled between the radiation source and the power source. The ambient-activated switch is to switch to an open position while a value for an ambient characteristic for the ambient-activated switch is at an ambient level for a surface of the Earth. The ambient-activated switch is to switch to a closed position while the value for the ambient characteristic for the ambient-activated switch is at a downhole ambient level, wherein the ambient-activated switch is to electrically couple the power source to the radiation source while in the closed position. | 03-11-2010 |
| 20100212969 | STABILIZER ASSEMBLIES WITH BEARING PAD LOCKING STRUCTURES AND TOOLS INCORPORATING SAME - Stabilizer assemblies and tools incorporating same are disclosed. In one embodiment, a stabilizer assembly comprises a body having at least one bearing pad receptacle therein, and a bearing pad disposed in the receptacle. The bearing pad includes at least two separated bores extending transversely therethrough, the bores being aligned with transversely extending bores in the body on laterally opposite sides of the bearing pad receptacle. A lock rod extends through each bearing pad bore and into the associated body bores. | 08-26-2010 |
| 20110240372 | ARTICLE OF MANUFACTURE HAVING A SUB-SURFACE FRICTION STIR WELDED CHANNEL - A method for routing an electrical conductor through a sub-surface channel in substantially any suitable metallic article of manufacture includes friction stir welding a cap in a groove formed in a surface of the article so as to form the sub-surface channel. An electrical conductor is then routed through the channel. The channel may further include a substantially tubular conduit formed therein with the electrical conductor being routed through the conduit. The friction stir weld zone formed during friction stir welding is generally harder and more wear resistant that the article body. | 10-06-2011 |
| 20130092446 | STABILIZER SUBS FOR USE WITH EXPANDABLE REAMER APPARATUS, EXPANDABLE REAMER APPARATUS INCLUDING STABILIZER SUBS AND RELATED METHODS - An expandable reamer apparatus and stabilizer sub having at least one rib thereon attached thereto for drilling a subterranean formation. | 04-18-2013 |
| 20130306380 | UTILIZATION OF EXPANDABLE REAMER BLADES IN RIGID EARTH-BORING TOOL BODIES - An earth-boring tool includes a tool body of a fixed-blade reaming apparatus configured to be coupled within the drilling assembly. The tool body has a longitudinal axis and at least one reamer blade configured to be outwardly extendable for use in an expandable reamer and attachable on a fixed-blade reamer. The at least one reamer blade is attached to the tool body in an immovable manner relative to the tool body during use of the earth-boring tool in the formation of a subterranean wellbore. | 11-21-2013 |
| 20140048335 | REAMER WITH IMPROVED PERFORMANCE CHARACTERISTICS IN HARD AND ABRASIVE FORMATIONS - A reamer is designed to enhance operation of a bottom hole assembly in which it is included. One or more capabilities and/or characteristics of the cutters carried by the reamer blocks of the reamer may be varied even in the same profile portion to enhance the functionality and/or durability of the reamer. | 02-20-2014 |
| 20140262533 | POLYCRYSTALLINE DIAMOND COMPOSITE COMPACT - A polycrystalline diamond (PCD) composite compact element comprising a PCD structure bonded to a cemented carbide substrate, in which at least a peripheral region of the substrate comprises cemented carbide material having a mean free path (MFP) characteristic of at least about 0.1 microns and at most about 0.7 microns; and an elastic limit of at least about 1.9 GPa. | 09-18-2014 |
| 20150068813 | REAMER BLADES EXHIBITING AT LEAST ONE OF ENHANCED GAGE CUTTING ELEMENT BACKRAKES AND EXPOSURES AND REAMERS SO EQUIPPED - 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. | 03-12-2015 |
| 20150144405 | CUTTER BLOCK FOR A DOWNHOLE UNDERREAMER - A downhole tool has a body with a bore formed at least partially therethrough. A cutter block may be coupled to the body and move radially outward from the body in response to an increased pressure in the bore. The cutter block may include an outer surface that transitions from a first portion to a second portion, with the first portion being downhole of the second portion. A radius of curvature between the first and second portions may be less than about 7 cm. The second portion or a line tangential thereto may be oriented at an angle from about 60° to about 120° with respect to a central longitudinal axis of the body. A plurality of cutting elements may be disposed on the outer surface of the cutter block. At least one of the cutting elements may be disposed at least partially on the first or second portion of the outer surface. | 05-28-2015 |
| 175265000 | Plural cutter elements longitudinally relative movable into transverse alignment | 4 |
| 20090139772 | DIAMETRICALLY EXPANDED GROOVE CUTTING APPARATUS AND EXPANDABLE MECHANISM - To provide a diametrically expanded groove cutting apparatus capable of simultaneously cutting a plurality of diametrically expanded annular grooves on an inner peripheral wall of an anchor prepared hole for planting an anchor bar therein, and to provide an expandable mechanism used in the diametrically expanded groove cutting apparatus. | 06-04-2009 |
| 20110005840 | METHOD AND APPARATUS FOR ROTARY MINING - In various embodiments, a mining device can include a first housing portion and a second housing portion where relative movement between the first and second housing portions can extend and/or retract a cutting member with respect to the mining device. The mining device can further include a cable which can be mounted to the second housing portion where the cutting member is mounted to the cable and can be radially extended with respect to the first and second housing portions when the second housing portion is moved relative to the first housing portion along an axis. As the cutting member is extended, it can contact the sidewalls of a subterranean shaft to loosen material therefrom. | 01-13-2011 |
| 20120168229 | EXPANDABLE DOWNHOLE TOOL APPARATUS - An expandable downhole tool apparatus is disclosed. The apparatus comprises a body adapted to be incorporated into a drill string and at least one working member moveable relative to the body between an inward deactivated position and an outwardly deployed activated position in order to engage the wall of a borehole. Activation means adapted to move at least one said working member between the inward deactivated position and outwardly deployed activated position is provided. At least one passage is formed through the body and extends from a location on the body adjacent at least one working member to a location remote from the respective working member to enable debris accumulating underneath the respective working member to move along the passage and exit the body. | 07-05-2012 |
| 20120279784 | SLIDE REAMER AND STABILIZER TOOL - A downhole tool, for selectively reaming a wellbore or stabilizing drill string components within a wellbore, includes an elongate tool body adapted to receive reamer cartridges or stabilizer cartridges depending on the function desired, The reamer cartridges are radially insertable into corresponding pockets in the tool body, with each reamer cartridge having a reamer insert with an array of cutting elements. The reamer insert is disposed within a bushing and is rotatable relative thereto, about a rotational axis transverse to the longitudinal axis of the tool. However, the rotational axis is offset from the tool body axis, resulting in eccentric contact of the cutting elements with the wall of the wellbore, which in turn imparts rotation to the reamer insert when the tool is being moved axially through a wellbore without rotation. When the tool is to be used for stabilization, the reamer cartridges can be removed and replaced with stabilizer cartridges having stabilizer inserts with hard-faced stabilizer cones. | 11-08-2012 |
| 175266000 | Plural selectively shiftable cutter elements | 4 |
| 20120193147 | Fluid Path between the Outer Surface of a Tool and an Expandable Blade - In one aspect of the invention, an expandable tool for an earth boring system comprises a through bore configured to accommodate drilling fluid. A blade is configured to extend and retract out of an outer surface of the tool. A secondary fluid pathway connects the bore with an interface between the outer surface of the tool and a surface of the blade. The secondary pathway directs drilling fluid through the interface. | 08-02-2012 |
| 20130056281 | WELL BORE REAMER - A well bore reamer has an elongated body for coupling between members of a well string, a first set of cutting elements on the body at a fixed position, a second set of cutting elements on a sleeve closing around a sleeve carrying portion of the elongated body. The sleeve is slidable along a longitudinal axis of the body and rotatable thereabout. A lower clutch mechanism operates between the sleeve and the elongated body at a bottom end of the body's sleeve carrying portion to block rotation of the sleeve relative to the elongated body in a predetermined direction about the longitudinal axis under sliding of the sleeve into a lowered position adjacent said bottom end of the sleeve carrying portion. | 03-07-2013 |
| 20140048336 | REAMER WITH IMPROVED PERFORMANCE CHARACTERISTICS IN HARD AND ABRASIVE FORMATIONS - A reamer is designed to enhance operation of a bottom hole assembly in which it is included. One or more capabilities and/or characteristics of the cutters carried by the reamer blocks of the reamer may be varied even in the same profile portion to enhance the functionality and/or durability of the reamer. | 02-20-2014 |
| 20140332283 | EARTH-BORING TOOLS INCLUDING MOVABLE CUTTING ELEMENTS AND RELATED METHODS - Earth-boring tools may have a body, a cutting element attached to the body at a first location, and a formation-engaging structure attached to the body at a second location. The formation-engaging structure may be movable during a drilling operation between a first position and a second position. In the first position, the formation-engaging structure may be located rotationally behind the cutting element at a first radial distance from a longitudinal axis of the body at which the cutting element will at least initially shield the formation-engaging structure from engaging a formation. In the second position, the formation-engaging structure may be located at a different second radial distance from the longitudinal axis of the body at which the formation-engaging structure will engage a formation. | 11-13-2014 |
| 175271000 | With latch operated by fluid pressure or dropped element | 1 |
| 20080257608 | REAMING AND STABILIZATION TOOL AND METHOD FOR ITS USE IN A BOREHOLE - In accordance with an embodiment of the present invention, a drilling tool includes a tubular body defining a longitudinal axial cavity extending therethrough and defining at least one cutter element recess. The drilling tool also includes a cutter element at least partially disposed within the at least one cutter element recess and includes at least first and second cutting arms at least substantially disposed within the cutter element recess in a retracted position. The first and second cutting arms are operable to move from the retracted position to an extended position in which the first and second cutting arms extend at least partially beyond a periphery of the tubular body. The first and second cutting arms and the tubular body enclose a space when the first and second cutting arms are in the extended position. | 10-23-2008 |
| 175267000 | Cutter element shifted by fluid pressure | 17 |
| 20090032308 | Downhole Tool - A downhole apparatus comprises a body, extendable members mounted on the body and being movable between retracted and extended configurations, and a remotely operable retaining arrangement for maintaining the extendable members in the retracted configuration. The extendable members may be cutters, such that the apparatus may be a cutting apparatus, such as a reamer. An operator may control the apparatus to retain the cutting members in the retracted configuration, or prevent the extension of the cutting members. | 02-05-2009 |
| 20100193250 | Cutting Structure for Casing Drilling Underreamer - An underreamer earth-boring tool is connected to a bottom hole assembly for casing drilling applications. The underreamer has a tubular body with a longitudinal axis. Arms are pivotally mounted to the body and movable between retracted and extended positions. An array of cutting elements is mounted to each of the arms. Each of the arrays is swept back so that the cutting elements farther from the axis than others rotationally lag the others. | 08-05-2010 |
| 20100258354 | Jetted Underreamer Assembly - An underreamer for earth boring operations has a tubular body with a passage extending through it. Arms are pivotally mounted to the body and movable between retracted and extended positions. An actuator mandrel, located within the passage in the body, pushes the arms outward when drilling fluid is pumped downward in the drill string. Ports are located in the sidewall of the body and in the actuator mandrel. The ports align with each other when the mandrel moves to its downstream position. The ports divert a portion of the drilling fluid out to jet it across the cutting elements on the arms. The remaining portion of the drilling fluid passes downward to the drill bit and out nozzles of the drill bit. | 10-14-2010 |
| 20110120777 | EXPANDABLE DOWNHOLE TOOL - An expandable downhole tool such as an under-reamer or a stabiliser includes a mandrel mounted for linear slidable movement relative to a main body. The mandrel, together with one or more travel blocks, cause movement of a working component in an axial direction. One or more outwardly extending guide paths slidably interact with the working component to cause the working component to move between a withdrawn inoperative position and an outwardly deployed operative position. Upon increase of hydraulic pressure from below the tool, the mandrel is urged against a spring biasing the deactivated position to move axially and cause the working component to take its operative position. Upon decrease of hydraulic pressure, the spring moves the mandrel axially to cause the working component to take its withdrawn inoperative position. | 05-26-2011 |
| 20110240373 | DOWN-THE-HOLE DRILL HAMMER HAVING AN EXTENDABLE DRILL BIT ASSEMBLY - A down-the-hole drill hammer assembly includes a casing, a drill stem, a drilling lug segment and a pilot drill bit is provided. The drill stem is housed within the casing and includes an abutment surface. The drilling lug segment is slidably engaged with a distal end of the drill stem and movable between an initial configuration and an extended configuration. The drilling lug segment includes a proximal end engageable with the abutment surface of the drilling lug segment. The drill stem is movable between first and second positions within the pilot drill bit. In moving to the second position, the drill stem slidingly engages the drilling lug segment and moves the drilling lug segment to the extended configuration. | 10-06-2011 |
| 20120061148 | DOWNHOLE ROTARY DRILLING APPARATUS WITH FORMATION-INTERFACING MEMBERS AND CONTROL SYSTEM - A steerable drilling apparatus includes a control system inside a cylindrical housing connected to a drill bit having radially-extendable pistons. A fluid-metering assembly directs a piston actuating fluid into fluid channels in the drill bit leading to respective pistons. The control system controls the fluid-metering assembly to selectively allow fluid flow through the fluid channels to the pistons and to exit through orifices in the fluid channels. The selective fluid flow causes the actuated piston to temporarily extend in the opposite direction to a desired wellbore deviation, thereby deflecting the drill bit away from the borehole centerline. An upper member in the fluid-metering assembly can be moved to stabilize, steer, and change TFA within the drill bit. The control system and drill bit are connected so as to facilitate removal to change the drill bit's steering section and cutting structure configuration or gauge simultaneously. | 03-15-2012 |
| 20120298423 | JET ARRANGEMENT ON AN EXPANDABLE DOWNHOLE TOOL - Various embodiments of an expandable downhole tool for use in drilling of a wellbore are disclosed. The expandable tools disclosed herein may be used as an underreamer to enlarge a borehole, or may be used to stabilize a drilling system in a previously underreamed borehole or in a borehole that is being underreamed while drilling progresses. The various embodiments of the expandable tools disclosed herein have a higher hydraulic capacity than prior art underreamers. An increase in hydraulic energy delivered to the cutting structures may advantageously improve the rate of removal of cuttings from the cutting structures (improved cuttings evacuation), may decrease cutter element wear, and may prevent damage or premature failure. Improved cuttings evacuation may also provide for improved cutting action and increased penetration rates. | 11-29-2012 |
| 20130118812 | Rotary Steerable Push-the-Bit Drilling Apparatus with Self-Cleaning Fluid Filter - A steerable drilling apparatus includes a control system inside a cylindrical housing connected to a drill bit having radially-extendable pistons. A fluid-metering assembly directs a piston-actuating fluid into fluid channels leading to respective pistons. The control system controls the fluid-metering assembly to allow fluid flow to selected pistons, causing the actuated pistons to temporarily extend in the opposite direction to a desired wellbore deviation, thereby deflecting the drill bit away from the borehole centerline. An upper member in the fluid-metering assembly can be moved to stabilize, steer, and change TFA within the drill bit. The control system and drill bit are connected so as to facilitate removal to change the drill bit's steering section and cutting structure configuration or gauge simultaneously. The apparatus may incorporate a fluid filter module mounted to the control system. The pistons may incorporate auxiliary cutting elements to provide near-bit reaming capability. | 05-16-2013 |
| 20130161102 | Drill Bit For Use In Boring A Wellbore And Subterranean Fracturing - A drill bit for use in drilling a wellbore and that can be used for fracturing the subterranean formation surrounding the wellbore. Included on the bit body is a packer for sealing against the wellbore wall during fracturing. A chamber in the drill bit houses a valve assembly for selectively diverting fluid between use in drilling and for use in fracturing. The fluid is delivered through a drill string that attaches to an upper end of the bit. The valve assembly can be shuttled between drilling and fracturing configurations by selectively adjusting an amount and/or pressure of the fluid flowing in the drill string. | 06-27-2013 |
| 20130264122 | EXPANDABLE REAMER METHODS - Expandable reamer tools include an outer body, a fluid passageway extending through the outer body, and at least one blade configured to slide relative to the outer body between a retracted position and an expanded position. In some embodiments, the tools may include a formation-engaging surface comprising a gage area. In other embodiments, the tools may include a radially recessed area extending from a back edge of the formation-engaging surface. Methods for removing such expandable reamer tools from a borehole are also disclosed. | 10-10-2013 |
| 20130299248 | Adjustable Body Supported Cutter Arms for Underreamer - An underreamer for connection with a rotary pipe string includes inner and outer body sections which form a body structure to provide a fluid flow path therethrough for communicating with piston and cylinder means formed between the body sections for receiving drilling fluid to effect telescopic movement between the body sections permitting engagement of cutter arms and support of said cutter arms on the outer body of the underreamer. Cutter arms are pivotally mounted on the inner body section and, upon engagement of the cutter arms to effect underreaming are fully supported on the outer body section thereby minimizing damage from vibration and repeated use on the threaded inner body sections. | 11-14-2013 |
| 20150122550 | SUBSURFACE FORMATION CUTTER - The present invention is a subsurface formation cutter for directional cutting into a subterranean formation. The subsurface formation cutter includes a transmission unit, a cutter bit, a bit brace, and a ram unit. The transmission unit has a driver shaft operatively connected to a bottom hole assembly. The cutter bit has a connector member, a cutter body rotatably coupled to the connector member, and a bit shaft connected to the cutter body. The bit shaft is operatively coupled to the driver shaft of the transmission unit. The ram unit has a moveable ram shaft connected to a traveling member. The bit brace is pivotably connected to the connector member and the traveling member. A connection member is attaches the ram unit to the transmission unit, and is configured to receive and guide the traveling member to travel in a direction parallel with a longitudinal axis of the subsurface formation cutter. | 05-07-2015 |
| 20160251905 | SEAL ASSEMBLY FOR WELLBORE TOOL | 09-01-2016 |
| 175269000 | Fluid pressure acts against spring biased part | 4 |
| 20090145666 | EXPANDABLE STABILIZER WITH ROLLER REAMER ELEMENTS - An expandable reamer apparatus for drilling a subterranean formation may include a tubular body, one or more blades, each blade positionally coupled to a sloped track of the tubular body, a push sleeve and a drilling fluid flow path extending through an inner bore of the tubular body for conducting drilling fluid therethrough. Each of the one or more blades may be configured to ream a subterranean formation. The push sleeve may be disposed in the inner bore of the tubular body and coupled to each of the one or more blades so as effect axial movement thereof along the track to an extended position responsive to exposure to a force or pressure of drilling fluid in the flow path of the inner bore. Each blade may include one or more roller elements for reaming a wellbore. | 06-11-2009 |
| 20090301784 | Constricting Flow Diverter - In one aspect of the present invention, a downhole assembly has a downhole tool string component with a bore adapted to accommodate drilling mud having a central passage and at least one periphery passage. At least two movable segments are peripherally positioned around a bore wall adapted to constrict a diameter of the central passage and are adapted to divert drilling mud into the at least one periphery passage. At least one opening mechanism is adapted to move a portion of the at least two movable segments toward the bore wall. | 12-10-2009 |
| 20110073376 | EARTH-BORING TOOLS HAVING EXPANDABLE MEMBERS AND METHODS OF MAKING AND USING SUCH EARTH-BORING TOOLS - An expandable apparatus for use in a borehole includes a tubular body having at least one opening extending between a longitudinal bore of the tubular body and an outer surface of the tubular body and at least one member positioned within the at least one opening of the tubular body. The member is configured to move between a retracted position and an extended position. An actuation structure is positioned within the tubular body. The actuation structure is coupled to the at least one member and is configured to move the at least one member from the retracted position to the extended position responsive to a flow rate of drilling fluid passing through the longitudinal bore. | 03-31-2011 |
| 20130175095 | PRESSURE ACTIVATED FLOW SWITCH FOR A DOWNHOLE TOOL - A downhole tool includes a pressure activated flow switch for selectively actuating and deactuating a device, such as a reaming block. The flow switch is deployed external to the flow bore and includes a flow piston configured to reciprocate between axially opposed open and closed positions such that the device is actuated when the flow piston is in the open position and deactuated when the flow piston is in the closed position. The flow piston is configured to translate from the closed position to the open position when a differential pressure exceeds a predetermined threshold. The flow piston may be further configured to remain in the open position at differential pressures less than the threshold. | 07-11-2013 |
| 175270000 | Cutter element shifted by dropped element | 2 |
| 20130199855 | DOWNHOLE TOOL - A downhole tool comprises a body having a slot therein, a cutting blade mounted within the body and extendible and retractable through the slot such that the outer diameter of the tool can be selectively increased, an actuation member for driving the cutting blade between the retracted and extended positions and a mounting means connecting the blade to the actuation member, said body having a tapered surface along which the blade travels such that as the blade travels along the tapered surface the blade moves radially outwardly with respect to both the body and the mounting means whilst remaining in contact with the tapered surface. | 08-08-2013 |
| 20140246246 | ACTUATION ASSEMBLIES, HYDRAULICALLY ACTUATED TOOLS FOR USE IN SUBTERRANEAN BOREHOLES INCLUDING ACTUATION ASSEMBLIES AND RELATED METHODS - Actuation assemblies include a valve assembly comprising a valve sleeve configured to rotate to selectively enable fluid flow through at least one aperture in the valve sleeve and into at least one port of an outer sleeve and a ball retention feature configured to selectively retain a ball dropped through a fluid passageway of the valve assembly in order to rotate the valve sleeve. Downhole tools include actuation assemblies. Methods for actuating a downhole tool include receiving a ball in an actuation assembly, rotating a valve sleeve of the actuation assembly to enable fluid to flow through a portion of the actuation assembly, and actuating a portion of the downhole tool with the fluid. | 09-04-2014 |
| 175273000 | Cutter element shifted by cam or gear axially rotatable relative to shaft | 2 |
| 20090188722 | DRILLING DEVICE FOR DRILLING AND REAMING OF A HOLE - Drilling device for drilling into ground, rock or for reaming a predrilled hole which drilling device comprises, if needed, a bit ( | 07-30-2009 |
| 20130306381 | APPARATUS AND METHOD FOR INSTALLING GROUND ANCHORING SYSTEMS - An apparatus and method for forming a borehole in an earthen formation includes a side cutting device comprised of a laterally extendable side cutting element that can be actuated from a retracted position to an extended position in which the side cutting element is selectively employed to create a larger borehole diameter in a down hole location than the remaining portion of the borehole that is closer to the borehole opening. | 11-21-2013 |
| 175284000 | Cutter element shifted by longitudinally relatively movable parts | 11 |
| 20080236897 | Expandable Downhole Tool - An expandable downhole tool such as an under-reamer or a stabiliser comprises a mandrel mounted for linear slidable movement relative to a main body. A fixed guide takes the form of a spline bar is disposed in an axial recess and is restrained from movement longitudinally and laterally. To retain the spline bar in position, lock blocks are provided and can be bolted to a surrounding housing of the main body in which axial recess is formed, by means of lock pins. The longitudinally slidable mandrel has two axially spaced cut-out recesses, into which can be received the lower ends of travel blocks. Cutter block has obliquely outwardly extending guide ways which are slidably mounted on similarly shaped slide ramps projecting outwardly from the spline bar. Upon increase of hydraulic pressure from below the tool, the mandrel is urged to the left against its spring biasing from the deactivated position to take up an axially displaced position. Because travel block engages adjacent end face of the cutter block, the cutter block is urged outwardly to the extended position by obliquely outward sliding movement of guide ways on slide ramps. | 10-02-2008 |
| 20100108394 | Downhole Tool - A downhole tool ( | 05-06-2010 |
| 20110240374 | DOWNHOLE TOOL HAVING A FRICTION STIRRED SURFACE REGION - A method for hardening a portion of the outer surface of a downhole tool body includes friction stirring the vulnerable surface of the tool. Such friction stirring generally includes rotating a friction stir weld tool in contact with the surface until a portion of the tool penetrates the tool. The friction stir weld tool is then translated (while rotating) across a predetermined region of the surface thereby creating a friction stir zone. The friction stir zone is generally considerably harder, and therefore more wear resistant, than the parent material that makes up the tool body. The resulting downhole tool includes at least one surface with a hard friction stir zone. | 10-06-2011 |
| 20110278071 | APPARATUS FOR ROTARY MINING - In various embodiments, a mining device can include a first housing portion and a second housing portion where relative movement between the first and second housing portions can extend and/or retract a cutting member with respect to the mining device. The mining device can further include a cable which can be mounted to the second housing portion where the cutting member is mounted to the cable and can be radially extended with respect to the first and second housing portions when the second housing portion is moved relative to the first housing portion along an axis. As the cutting member is extended, it can contact the sidewalls of a subterranean shaft to loosen material therefrom. | 11-17-2011 |
| 20150361726 | EXTENDABLE DRILLING TOOL - Disclosed is an extendable drilling tool, the extendable tool moving in a drilling direction and including a body with a longitudinal axis and at least one arm that is mobile relative to the body in a direction of movement that forms a first angle with the longitudinal axis that is non-zero, less than 45°, and open upstream according to the direction of drilling. The extendable tool includes a piston that is mobile in a direction parallel to the longitudinal axis, the piston being located downstream according to the direction of drilling relative to the arm, the piston including at least one bearing surface that works with at least one arm and that forms with the longitudinal axis a second angle that is non-zero, less than 90°, and open downstream according to the direction of drilling. | 12-17-2015 |
| 20160017664 | SPLINE INSERT FOR A DOWNHOLE TOOL - An expandable tool includes a body and a recess extending at least partially through the body from an outer radial surface of the body. A spline insert may be at least partially positioned in the recess and coupled to the body. The spline insert may include a single spline or multiple splines. A cutter block or other expandable member may be at least partially positioned in the recess. The cutter block or other expandable member may include a spline on a side surface thereof, which spline may be engaged with the one or more splines of the spline insert. Engagement between one or more splines of the spline insert and spline of the cutter block or other expandable member may allow the expandable member to move radially outward from a retracted position to an expanded position, and vice versa. | 01-21-2016 |
| 20190145176 | SPLINE INSERT FOR A DOWNHOLE TOOL | 05-16-2019 |
| 175285000 | Toggle or linkage between movable parts | 2 |
| 20130008721 | APPARATUS AND METHOD FOR INSTALLING GROUND ANCHORING SYSTEMS - An apparatus and method for forming a borehole in an earthen formation includes a side cutting device comprised of a laterally extendable side cutting element that can be actuated from a retracted position to an extended position in which the side cutting element is selectively employed to create a larger borehole diameter in a down hole location than the remaining portion of the borehole that is closer to the borehole opening. | 01-10-2013 |
| 20140110179 | REAMER TOOL POSITIONABLE IN A WELLBORE - Described herein is a reamer tool ( | 04-24-2014 |
| 175286000 | Cam or gear engaging cutter element | 2 |
| 20100096191 | Underreaming and Stabilization Tool for Use in a Borehole and Method for Its Use - An underreaming tool may include may include a tubular body, a drive tube, at least one blade element (“the blade element”), at least one wedge element (“the wedge element”), and a stop mechanism. The drive tube may include at least one longitudinal groove (“the longitudinal groove”) axially disposed along a length of the drive tube. The wedge element may include a first side having at least one lateral projection (“the lateral projection”) configured to axially slide into the longitudinal groove to couple the wedge element to the drive tube. The stop mechanism comprises a threaded sleeve configured to screw onto the drive tube to lock the wedge element in the longitudinal groove once the lateral projection is slid into the longitudinal groove. | 04-22-2010 |
| 20100243331 | HELICAL DRILLING APPARATUS, SYSTEMS, AND METHODS - A down-the-hole assembly includes a housing having a central axis and a mechanical gear box positioned within the housing. The mechanical gear box is coupled to the housing such that rotation of the housing at a first rotational rate provides a rotary input to the mechanical gear box. A rotary cutting bit is coupled to the mechanical gear box. The mechanical gear box is configured to rotate said rotary cutting bit at a second rotational rate in response to that rotary input from the housing. The second rotational rate is greater than the first rotational rate. The mechanical gear box is also further configured to cause the rotary cutting bit to orbit about the central axis of the housing. | 09-30-2010 |
| 175290000 | With latch | 1 |
| 20110100719 | LOCKING MECHANISM FOR A GROUND DRILL - A locking mechanism for locking an insertable device relative to an outer tube of a ground drill comprises at least one latch, which is arranged to releasably retain the insertable device in a substantially fixed axial position relative to the outer tube. The locking mechanism comprises a cam and a cam follower, which are arranged to control a radial position of the latch. The locking system may be used in a ground drill system. | 05-05-2011 |
| 175291000 | Spring biased | 1 |
| 20140318869 | METHODS AND SYSTEMS FOR CONTROLLING TORQUE TRANSFER FROM ROTATING EQUIPMENT - Systems and methods for reducing the amount of torque transferred to the Bottom Hole Assembly and the drill string during drilling operations are disclosed. The drill string includes an optionally non-rotatable portion. A rotational hold down system is positioned at a first position on the drill string where it is not rotationally coupled to the drill string. The rotational hold down system is then moved to a second position on the drill string where it is rotationally coupled to the optionally non-rotatable portion of the drill string. In the second position, one or more bars on the rotational hold down system substantially prevent rotation of the optionally non-rotatable portion of the drill string. | 10-30-2014 |
| 175292000 | Pivoted about substantially longitudinal axis | 1 |
| 20100236831 | Excavation Tool - Provided is an excavation tool which can firmly fix a locking pin so that the locking pin does not move even in the case of an impact during excavation and/or the locking pin being pushed out in the insertion/removal direction. | 09-23-2010 |
