| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 175325100 | Shaft carried guide or protector | 55 |
| 20080230277 | Pocket for a Downhole Tool String Component - A downhole tool string component, having a tubular body with an outer diameter. A first, second, and third flange are disposed around the outer diameter of the tubular body at different axial locations. A first sleeve is disposed around the tubular body such that opposite ends of the first sleeve fit around at least a portion of the first and second flanges, forming a first sealed pocket around the outer diameter of the tubular body. A second sleeve is disposed around the tubular body such that opposite ends of the second sleeve fit around at least a portion of the second and third flanges, forming a second sealed pocket around the outer diameter of the tubular body. | 09-25-2008 |
| 20090000826 | METHOD AND APPARATUS FOR CONTROLLING PRECESSION IN A DRILLING ASSEMBLY - Drilling apparatuses and methods for limiting precession are provided. According to one embodiment, a drilling apparatus includes a non-rotating stabilizer. The non-rotating stabilizer includes a first blade and a second blade, the first blade being arranged opposite the second blade. The first blade is biased radially outwardly by a force of a first value. The second blade is not biased radially outwardly by a force corresponding to the first value. The second blade may be a blade which is slidable along the non-rotating stabilizer in an axial direction and allow free sliding axial contact with the formation. | 01-01-2009 |
| 20090114451 | APPARATUS FOR KEEPING A DOWN HOLE DRILLING TOOL VERTICALLY ALIGNED - An apparatus ( | 05-07-2009 |
| 20090266617 | Sleeve arrangement - Sleeve arrangement for a drill rig, especially adapted for damping sound and sealing to the ground, said drill rig comprising a feed beam ( | 10-29-2009 |
| 20100032214 | Composite Enhanced Metallic Drilling Riser System - An offshore composite enhanced metallic drilling riser is equipped to enable preloading of the composite shell and the metallic riser. A riser has steel end connectors and a continuous metallic inner liner, encased in a composite shell. A segmented hyperboloid shaped profile is located near each of the end fittings for preloading of the composite and the metallic riser. In one version, both halves of the hyperboloid shape are capable of axial movement by adjusting jack bolts connected to one of the hyperboloid halves. One of the halves is limited in axial movement while the other half moves axially away from the restricted half, the movement simultaneously generates the composite pre-load and the metallic riser pre-load. The other version uses fluid pressure between mating faces of the segments to push them apart. | 02-11-2010 |
| 20100212970 | 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 a portion of a bore extending therethrough, the bore being aligned with body bores in the body on opposite sides of the bearing pad receptacle. A lock rod extends through the bore and into the associated body bore. | 08-26-2010 |
| 20110120778 | DRILLING TOOL - A drilling tool that has a flexible shaft so as to be able to make short radius curves while still being able to transmit torque and axial loads. The drilling tool includes a drill shaft for transmitting axial load, comprising a series of coaxial ring members connected together such that adjacent ring members are flexible in an axial plane relative to each other; each ring member being connected to an adjacent ring member by connecting member arranged to transmit torque therebetween; and axial supports extend between adjacent ring members so as to transmit axial loads therebetween. | 05-26-2011 |
| 20110198132 | DRILL PIPE PROTECTOR ASSEMBLY - A drill pipe protector assembly comprising at least one protector sleeve ( | 08-18-2011 |
| 20120168230 | GUIDING DEVICE FOR A DRILLING DEVICE - The invention relates to a guide device for a drilling device, comprising a housing having deflection means for generating a side force, and a shaft rotatably supported within the housing, wherein the shaft comprises connection means at a first end for connecting to a drilling rod, and connection means at a second end for connecting to a drilling head, and wherein coupling means are provided for connecting the shaft to the housing in a rotationally fixed manner as needed. | 07-05-2012 |
| 20130292182 | DOWN-THE-HOLE HAMMER DRILL ASSEMBLY - The invention provides a down-the-hole drill assembly ( | 11-07-2013 |
| 20130313025 | INTEGRAL WEAR PAD AND METHOD - The current invention provides a drill pipe of standard weight with an integral wear pad. The drill pipe with integral wear pad provides increased durability while retaining the strength, flexibility, lightweight, and other performance characteristics of standard weight drill pipe. The current invention also provides methods for making a standard weight drill pipe with integral wear pad. | 11-28-2013 |
| 20140124269 | CENTRALIZER FOR DOWNHOLE PROBES - An assembly for use in subsurface drilling includes a downhole downhole probe supported by a centralizer. The centralizer comprises a tubular member that extends around the downhole probe. A wall of the centralizer is fluted to provide inward contact points that support the downhole probe and outward contact points that bear against a bore wall of a section of drill string. The downhole probe may be supported for substantially its entire length. | 05-08-2014 |
| 20150299514 | INDUSTRIAL TOOLS WITH THERMOSET COATING - A method for applying a coating to a surface of an industrial tool includes applying a coating including a thermosetting polymer to a metallic surface of the industrial tool. The coating is cured to form a bond between the coating and the metallic surface. According to certain embodiments, the thermosetting polymer may be combined with an additive. The additive may be selected to improve the chemical resistance or wear resistance of the coating and thereby improve the chemical resistance or wear resistance of certain surfaces of the industrial tool. | 10-22-2015 |
| 20160053548 | 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. | 02-25-2016 |
| 175325200 | Coupled between shaft sections or bit and shaft section | 23 |
| 20080217070 | Method and apparatus for providing a continuous stroke auger boring machine - An auger boring machine provides a continuous stroke drive assembly for driving a pilot tube to form an underground pilot hole used for guiding an auger in boring an underground pipe installation hole. The drive assembly preferably drives the pilot tube a distance at least the length of one of the pilot tube segments making up the pilot tube to substantially expedite the process. One embodiment includes a hydraulic piston-cylinder combination with a cylinder at least the length of the pilot tube segment. Alternately, a rack and a pinion drive mechanism may be used with a rack at least the length of the pilot tube segment or even more than twice that length to allow for a pair of pilot tube segments to be added simultaneously to the pilot tube. A lubricant feed system allows water to be pumped through passages formed in the pilot tube and steering head. | 09-11-2008 |
| 20090071722 | WELLBORE CONSOLIDATING TOOL FOR ROTARY DRILLING APPLICATIONS - A subpart of a drill string is described having an outer circumferential surface which is contoured and adapted to engage the wall of the borehole with a small angle of attack while exerting during rotary drilling operations an compacting pressure on mud cake and/or cuttings present in the annulus between the drill string and the borehole. | 03-19-2009 |
| 20090152011 | Downhole Drive Shaft Connection - In one aspect of the present invention, a section of a drill string has a drill bit with a body intermediate a shank and a working face, the working face having at least one cutting element. A jack element is disposed within the drill bit body and has a distal end substantially protruding from the working face. A drive shaft is in communication with the jack element and a rotary source. The drive shaft has a first portion secured within a bore of a tool string component in the tool string and a second portion secured within a bore of the drill bit. The first and second portions of the drive shaft are connected at a pin and box connection wherein the first and second portions are automatically connected as the tool string component is mechanically coupled to the drill bit. | 06-18-2009 |
| 20090283331 | MATERIAL FOR PRODUCING PARTS OR COATINGS ADAPTED FOR HIGH WEAR AND FRICTION-INTENSIVE APPLICATIONS, METHOD FOR PRODUCING SUCH A MATERIAL AND A TORQUE-REDUCTION DEVICE FOR USE IN A DRILL STRING MADE FROM THE MATERIAL - The present invention relates to a material for producing parts or coatings adapted for highly wear and friction intensive applications, said material comprising preformed hard material particles made of carbides which are randomly embedded in a matrix of a host material. In order to provide a material that is suitable to produce parts or coatings having a high wear resistance, and which at the same time causes a low friction resistance, it is suggested that the carbide particles are preformed spherical particles having a hardness in the range between 1000 and 2000 HV/10 and said host material is a Ni based alloy additionally comprising C, Cr, Mo, Fe, Si, B and Cu in the following ranges (in wt %): C 0.005-1.0; Cr 10.0-26.0; Mo 8.0-22.0; Fe 0.1-10.0; Si 3.0-9.0; B 1.0-5.0; Cu 0.1-5.0. | 11-19-2009 |
| 20100044113 | CONNECTION FOR WELL BORE DRILLING TOOLS - A drilling tool connection includes a male pin, a female box connector, and a locking pin. The male pin includes a hexagonal outer perimeter, at least a portion of the pin having a cylindrical bore along a longitudinal axis of the pin, where the pin has a transverse slot formed transverse to the longitudinal axis of the pin. The box connector element includes a circular outer perimeter, where at least a portion of the box connector element has a hexagonal aperture aligned with a longitudinal axis of the box. The box connector element has at least one transverse bore formed in the box transverse to the longitudinal axis of the box, and the hexagonal aperture of the box is adapted to receive the hexagonal portion of the male pin. The locking pin is insertable through an aperture defined by the slot of the pin and the bore of the box. | 02-25-2010 |
| 20100122851 | Ultra-hard drilling stabilizer - A drilling stabilizer having a body and a plurality of blades integrally cast from tungsten carbide particles bound together with a heated metal binder, for use in drilling oil and gas wells, has a first box end and a second pin end at the distal end of the stabilizer. A plurality of PDC cutters are mounted on the top end of the stabilizer to allow the stabilizer to be used as a reamer when pulling the stabilizer out of the borehole. A steel tube is formed within the interior of the stabilizer in the molding process and which allows the pin end to have steel threads and the box end to also have steel threads to facilitate the makeup of the stabilizer with either the steel threads of a drill bit or the steel threads of joints of drill pipe. | 05-20-2010 |
| 20120018230 | Flasked Pressure Housing - A system for containing electronics positioned in a downhole tubular. In some embodiments, the system includes a pressure housing, a rigid end piece, a compliant end piece, an inner tubular member, one or more annular standoffs, and a chassis. The pressure housing is supported within the downhole tubular. The rigid end piece and the compliant end piece are fixedly coupled within opposing ends of the pressure housing. The inner tubular member is disposed within the pressure housing and has opposing ends. One of the opposing ends is coupled to the rigid end piece, and the other of the opposing ends is free to move relative to the compliant end piece. The chassis is disposed within the inner tubular member and houses the electronics. Each standoff is disposed between the inner tubular member and the pressure housing and includes at least one radially extending portion compressed therebetween. | 01-26-2012 |
| 20120067650 | MODULAR SYSTEM OF MUTLI-PURPOSE RODS FOR DRILLING SOIL - A modular system of multipurpose rods for drilling soil is constituted by rods ( | 03-22-2012 |
| 20120138368 | BOTTOM PREVENTER FOR USE IN A DRILLING SYSTEM - A conduit assembly for use in a drilling system that may include an upper section, an intermediate section and a lower section. The upper section may include a first seal. The first seal may include an opening that may be sized and configured to receive and form a seal with an inner drill string. The first seal may include one or more slits that may extend from an outer edge of the first seal to the opening of the first seal. The intermediate section may include an outlet for a flushing medium. The outlet may include a projection that may extend into a hollow interior of the intermediate section. The lower section may be sized and configured to be connected to and disconnected from a connecting portion of an outer drill string. The lower section may be sized and configured to be connected to and disconnected from the intermediate section. | 06-07-2012 |
| 20120199400 | DRILL PIPE AND CORRESPONDING DRILL FITTING - A drillpipe for a drill stem to drill a hole. The drill stem includes a drill string and a bottom hole assembly. The drillpipe includes a first end having a first inertia, a second end having a second inertia, a first intermediate zone adjacent to the first end, a second intermediate zone adjacent to the second end, and a central substantially tubular zone with an external diameter smaller than the maximum external diameter of at least the first or the second end. A casing is fixed on the pipe over a portion of the external surface thereof, at least one physical parameter sensor is disposed in the casing, and at least one data transmission/storage mechanism is connected to the sensor output, the casing being disposed at a distance from the first and second ends, the casing being integral with the central zone at a distance from the first and second intermediate zones and having a smaller inertia than the first and second inertias. | 08-09-2012 |
| 20130264123 | METHODS OF MANUFACTURING STEEL TUBES FOR DRILLING RODS WITH IMPROVED MECHANICAL PROPERTIES, AND RODS MADE BY THE SAME - Embodiments of the present disclosure are directed to methods of manufacturing steel tubes that can be used for mining exploration, and rods made by the same. Embodiments of the methods include a quenching of steel tubes from an austenitic temperature prior to a cold drawing, thereby increasing mechanical properties within the steel tube, such as yield strength, impact toughness, hardness, and abrasion resistance. Embodiments of the methods reduce the manufacturing step of quenching and tempering ends of a steel tube to compensate for wall thinning during threading operations. Embodiments of the methods also tighten dimensional tolerances and reduce residual stresses within steel tubes. | 10-10-2013 |
| 20140345950 | DRILLER RETAINING DEVICE ABLE TO BE POSITIONED WITH WELL HORIZONTALITY AND VERTICALITY - A driller retaining device able to be positioned with well horizontality and verticality includes a hollow outer sleeve having two end, one is a working end and the other being an assembly end; an inner wall of the assembly end being formed with a plurality of axial sliding tracks; an inner hollow cylinder arranged within the sleeve; two ends of the inner hollow cylinder being an machine end and an assembly end; an outer wall of the inner hollow cylinder having at least one sliding block which is arranged corresponding to the axial sliding groove. In in assembly, the inner hollow cylinder is combined to the driller; then the assembly end of the inner hollow cylinder is assembled to the assembly end of the outer sleeve; and at the same time, the sliding block of the inner hollow cylinder is assembled into the axial sliding groove of the outer sleeve. | 11-27-2014 |
| 20160060972 | DRILL PIPE WITH ROLLER ASSEMBLY - A drill pipe assembly includes a tubular body and a roller assembly for reducing friction between the drill pipe and the inner wall of a wellbore. The tubular body includes a substantially cylindrical body outer surface defining roller pockets. Alternatively, the drill pipe assembly may have a sleeve that fits concentrically and rotatably around the tubular body, with the sleeve outer surface defining the roller pockets. Each roller pocket has a roller assembly that includes an axle having opposed ends retained by the tubular body or the sleeve. A roller is retained by and rotates on each axle, partially disposed in the roller pocket and partially projecting outwardly from the outer surface. | 03-03-2016 |
| 20160060975 | DOWNHOLE DRILLING DEVICE - A downhole drilling device ( | 03-03-2016 |
| 20160160578 | DOWNHOLE EXPANDABLE DRIVE REAMER APPARATUS - A downhole expandable drive reamer apparatus is described. The apparatus comprises a body defining a longitudinal axis X-X. At least one roller is disposed on the body and is moveable relative to the body between an inwardly retracted condition and an outwardly deployed condition. A thread or other protrusion is formed on at least one roller and is arranged to engage a surface of a well bore to drive the apparatus to along the well bore when the roller is in the outwardly deployed condition. The rotational axis R-R of the roller is non-parallel to the longitudinal axis X-X of the body. | 06-09-2016 |
| 175325300 | With bore wall engaging means rotatable relative to shaft section (e.g., with bearings) | 7 |
| 20100078222 | MATRIX TURBINE SLEEVE AND METHOD FOR MAKING SAME - 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. | 04-01-2010 |
| 20110036638 | Interlocking Low Profile Rotating Control Device - A system and method is provided for a low profile rotating control device (LP-RCD) and its housing mounted on or integral with an annular blowout preventer seal, casing, or other housing. The LP-RCD and LP-RCD housing can fit within a limited space available on drilling rigs. An embodiment allows a LP-RCD to be removably disposed with a LP-RCD housing by rotating a bearing assembly rotating plate. A sealing element may be removably disposed with the LP-RCD bearing assembly by rotating a seal retainer ring. Alternatively, a sealing element may be removably disposed with the LP-RCD bearing assembly with a seal support member threadedly attached with the LP-RCD bearing assembly. The seal support member may be locked in position with a seal locking ring removably attached with threads with the LP-RCD bearing assembly over the seal support member. Spaced apart accumulators may be disposed radially outward of the bearings in the bearing assembly to provide self lubrication to the bearings. | 02-17-2011 |
| 20110067926 | ELECTRICALLY POWERED TRACTOR - An electrically powered and controlled tractor system includes one or more electric gripper assemblies and one or more electric power train assemblies. Power and control signals for the gripper assemblies and power train assemblies can be delivered from a ground surface via a wireline. The gripper assembly employs a motor-activated lead screw and nut combination to expand passage-gripping elements, preferably by pushing the gripping elements radially outward from locations between opposing ends of the gripping elements. A failsafe mechanism can retract the gripping elements during a power interruption. The power train assembly employs a motor-activated lead screw and nut combination to expand and contract two or more telescoping members. The tractor system can include multiple tractor units that each includes one gripper assembly and one power train assembly. A tractor can include one power train assembly and two gripper assemblies. | 03-24-2011 |
| 20130333949 | DOWNHOLE TRACTION - An apparatus for use in drilling a high angle or horizontal borehole has a body for coupling to a drill string and one or more traction members mounted for rotation on the body. The apparatus defines a first, passive, configuration and a second, active, configuration in which the traction member urges the apparatus along the inner wall of the borehole. | 12-19-2013 |
| 20150014066 | FORCE APPLICATION REDUCTION EMPLOYING ACTUATOR AND THRUST BEARING - An apparatus includes a thrust bearing adapted to engage a tubular component. A bearing carrier is connected to the thrust bearing, an arm is connected to the bearing carrier, and an actuator is connected to the arm. In one embodiment, the bearing carrier includes an arcuate notch through which the tubular component is adapted to extend. In another embodiment, the apparatus has a first configuration in which a vertical offset is defined between the tubular component and the thrust bearing, and a second configuration in which the thrust bearing is engaged with the tubular component for the support thereof. In another embodiment, the apparatus is placed in the first configuration in response to a cessation of a supply of electrical power to a control valve in fluid communication with the actuator. In another embodiment, the tubular component is connected to, or is part of, a quill of a top drive. | 01-15-2015 |
| 20150068814 | DRILL PIPE PROTECTOR ASSEMBLY - A drill pipe protector assembly comprising at least one protector sleeve ( | 03-12-2015 |
| 20160130886 | DOWNHOLE APPARATUS AND METHOD - A bearing ( | 05-12-2016 |
| 175325400 | Having removable inserts | 1 |
| 20080296067 | Adjustable Winged Centering Tool for Use In Pipes With Varying Diameter - The present invention relates to an adjustable centering tool ( | 12-04-2008 |
| 175325500 | Surrounding existing shaft section | 17 |
| 20090139773 | Percussive drill bit for rock drilling and method for the manufacture of such a drill bit - A drill bit for percussive rock drilling of the type that comprises a front head and a tubular skirt, which extends rearward from the head to a rear, ring-shaped end and includes an internal thread for the transfer of combined impact and rotary motions to the drill bit is disclosed. The rear end of the skirt is, via an unelastic joint, e.g., a friction weld, united to a front end of a sleeve having an envelope surface, from which a plurality of projections are peripherically spaced-apart from each other project, e.g., ridges, having the purpose of guiding the drill bit in the drill hole. By assembling the drill bit of two parts, the internal thread can be turned with high accuracy and smoothness, at the same time as the drill bit is given an inherent good controllability. In an additional aspect, a method for the manufacture of such a drill bit is also disclosed. | 06-04-2009 |
| 20090301785 | Integrated Spiral Blade Collar - An integrated spiral blade collar comprising: a collar comprising a wall defining a bore, the collar having a longitudinal axis extending from a proximal end to a distal end; the collar comprising a first engagement mechanism at the proximal end and a second engagement mechanism at the distal end; the collar comprising one or more integral blades extending radially outward from an outer surface and forming a spiral around the longitudinal axis of the collar from at or near the proximal end to at or near the distal end of the collar, the spiral being at an angle of from 1° to 89° relative to the longitudinal axis of the collar. | 12-10-2009 |
| 20100078223 | PLATE STRUCTURE FOR EARTH-BORING TOOLS, TOOLS INCLUDING PLATE STRUCTURES AND METHODS OF FORMING SUCH TOOLS - Plate structures attachable to earth-boring tools comprise a disk including a circumferentially extending rim configured for attachment to an earth-boring tool. An aperture is formed through a portion of the disk and positioned radially interior from the rim. The aperture is configured to at least partially align with at least one junk slot of the earth-boring tool. Earth-boring tools comprising such plate structures, and methods of forming such earth-boring tools are also disclosed. | 04-01-2010 |
| 20130000990 | Replaceable wear band for well drill pipe - A wear band for a well drill pipe which is made up of a coil spring sized to fit at the joint of the well drill pipe or casing. The inner surface of the coil spring includes a textured coating such as a carbide. The outer surface includes a plurality of hydrodynamic dimples defined therein, and preferably both the outer surface and the inner surface are adapted to resist corrosion. The abrasive coating preferably consists essentially of 95% tungsten carbide and a binder of 5% cobalt and coats an amount of the inner surface in the range of 50% to 100%. The hydrodynamic dimples are generally tear drop in shape to act as miniature fluid pumps. As a result, the wear band can be mechanically attached to the drill pipe while eliminating the need for metallurgically-welded hardbands and therefore unaffecting the drill pipe properties and dimensions. | 01-03-2013 |
| 20130098690 | REPAIRED WEAR AND BUCKLE RESISTANT DRILL PIPE AND RELATED METHODS - The present invention embodies a drill pipe in which various damaged sections of the pipe are repaired in order to maintain or improve the wear and buckle resistance of the drill pipe. The sections are strengthened using various hardening methods such as heat treatment processes and/or expansion techniques. A sleeve can also be applied to the strengthened portions. Surface enhancers, such as hardbanding, can be applied to the strengthened portions or the sleeve in order to provide abrasion resistance or to reduce friction. | 04-25-2013 |
| 20130168154 | SONDE HOUSING AND BIT BODY ARRANGEMENT FOR HORIZONTAL DIRECTIONAL DRILLING - A horizontal directional drilling sonde housing has a cavity for receiving a sonde. Signal channels extend from the cavity to an exterior of the housing. A polymer lines at least part of the cavity and fills the signal channels. The drilling tool has a bit body and a drilling body. The two bodies have respective lateral surfaces which engage each other to prevent the transverse movement of the drilling body relative to the bit body during operations. The drill bit has a forward extending drill tooth, which drill tooth is removable from a bore. A spacer is located in the bore between the bottom end of the bore and the tooth. The drilling bit has buttons located on the side in a spiral configuration about a longitudinal axis of the bit. | 07-04-2013 |
| 20130248254 | UNDERGROUND REAMER - A reamer for underground passageways made, for instance, for the installation of cables or pipelines to distribute services in a reticulated network. It includes a support housing having plural integral pairs of spaced-apart laterally extending support wings, wherein between each pair of support wing there is a longitudinally extending slot to receive a laterally extending cutting wing such that each cutting wing is captured between a respective pair of support wings. A stabilization ring comprising a circular sleeve supported by plural radial support pillars which extend from a central collar. Wherein, the cutting wings engage with the support housing to resist rearward longitudinal movement, with the support wings to resist torsional forces, and with the circular sleeve of the stabilization ring to resist radial movement. | 09-26-2013 |
| 20130292183 | CENTRALIZER - A centralizer includes a centralizer body to be situated at the outer surface of a pipe string in the form of casing, liner, or the like used while drilling, the centralizer body being formed with a plurality of outer centralizer blades arranged in an inclined manner to the longitudinal axis thereof, wherein the centralizer body has an separate split inner tube secured to the pipe string by means of a press fit, and low friction inner surface of the centralizer body and separate center tube facing each other are made from low friction material. | 11-07-2013 |
| 20140041946 | FRICTION REDUCTION DEVICE FOR DRILL PIPE - A device to couple to a rotatable drill pipe to control pressure of a drilling system is disclosed. The device includes an inner surface to wrap around a portion of a rotatable drill pipe and having an inner diameter. A first tapered portion is opposite a second tapered portion, with a middle portion therebetween including an outer diameter greater than the inner diameter. The first and second tapered portions each taper from the outer surface to the inner surface. The middle portion, the first tapered portion, and the second tapered portion form an outer surface to sealingly pass through a seal element of a controlled-pressure drilling system. At least a portion of the outer surface corresponding to the middle portion includes a low-friction material. | 02-13-2014 |
| 20140174833 | POSITIONING STABILIZER ASSEMBLY USING SHOULDER RING - A stabilizer assembly using a shoulder ring. The drilling tool may include a housing having one or more external splines disposed along an outer surface of the housing. The drilling tool may also include a rotatable shaft disposed inside the housing, the shaft having a downhole end portion configured to be coupled to a drill bit. The drilling tool may further include a stabilizer assembly movably coupled to the housing. In addition, the drilling tool may include a shoulder ring having one or more internal splines disposed on an inner surface thereof, the shoulder ring disposed around the housing and configured to prevent uphole movement of the stabilizer assembly when the one or more internal splines of the shoulder ring are engaged with the one or more external splines. | 06-26-2014 |
| 20160130887 | STEM WEAR GUARD - A stem guard for a stem of a raise bore drill includes at least one wear pad attachable to the device. At least one volume of wear resistant material is joined with the at least one wear pad to form a wear pad assembly. The wear pad assembly is fixedly secured to the stem. A method of forming a wear pad assembly for protecting a device includes the steps of providing at least one volume of wear resistant material. The at least one volume of wear resistant material is joined to a protective material to form at least one wear pad assembly. At least one wear pad assembly is attached to the device and the at least one wear pad assembly is fixed to the device to protect the same from wear. | 05-12-2016 |
| 20160138342 | Method and Apparatus for Reaming and/or Stabilizing Boreholes in Drilling Operations - Disclosed is a well bore reamer for enlarging, stabilizing and/or cleaning portions of a drilled hole. An internal clutch system comprising pins and springs cause a helical blade segment of the disclosed device to rotate about its axis in a clockwise direction during its movement in a wellbore. When the device is situated in a fixed position in the wellbore, rotation of the drill pipe causes the clutch system to lock the helical blade segment of device in place, forcing the reamer to rotate with the drill string. | 05-19-2016 |
| 20160201434 | MODULAR DRILLING REAMER | 07-14-2016 |
| 175325600 | Held by a fastener parallel to shaft axis | 2 |
| 20120312601 | SYSTEMS AND METHODS OF A CLAMP FOR A SAMPLE BOTTLE ASSEMBLY - Clamp for a sample bottle assembly. At least some of the illustrative embodiments are apparatuses including a first drill collar section. The first drill collar includes: a first outer surface; a pocket accessible through an aperture in the first outer surface; a bottle assembly disposed within the pocket; and an intermediate clamp coupled to the first outer surface and spanning the pocket, the intermediate clamp at least partially retains the bottle assembly in the pocket, and the intermediate clamp has an axial length less than an axial length of the bottle assembly. | 12-13-2012 |
| 20150322721 | CASING DRILLING SYSTEM AND METHOD - A casing drilling system includes combination conduit of a casing and a pipe inside the casing. A first adapter has a flow diverter to redirect at least flow of drilling fluid returning from a bottom of a wellbore to either an interior of the pipe or an annular space between the casing and the pipe. A second adapter has a flow diverter to redirect flow of drilling fluid into the conduit through the other one of the interior of the pipe and the annular space. The second adapter has a fluid connection between either the interior of the pipe or the annular space and a rotationally fixed fluid outlet. The system includes a casing chuck having means to support the casing and a slidable conduit operable to expose an uppermost end of the casing and a connection between the second adapter and an uppermost end of the pipe. | 11-12-2015 |
| 175325700 | Held by discrete fastening means tangential to shaft axis | 2 |
| 20090266618 | ROTATING DRILL PIPE PROTECTOR ATTACHMENT AND FASTENER ASSEMBLY - An attachment and fastener system rigidly secures a rotatable drill pipe protector (RDPP) to a drill pipe. The RDPP comprises a sleeve which is split axially along at least one side. Parallel hinge bars are contained in first and second hinge sections which wrap around the hinge bars along opposite sides of the opening in the RDPP. One hinge bar is rotatable in the first hinge section. A series of axially spaced apart bolts are held in corresponding threaded openings in the rotatable hinge bar which rotates about its axis to swing the bolts in unison between open and closed positions. The other hinge bar has a series of threaded receptor openings facing outwardly from slotted openings in the second hinge section and aligned with the bolts on the other hinge bar. The rotating hinge bar swings the bolts into alignment with the slotted openings in the other hinge, after which the bolts are tightened in the threaded receptor openings for applying a holding force around the drill pipe. The hinges which wrap around each hinge bar are formed on the ends of a reinforcing cage structure molded into the wall of the RDPP. | 10-29-2009 |
| 20110017516 | NON-ROTATING BUOYANCY MODULES FOR SUB-SEA CONDUITS - A buoyancy module assembly reduces the effective weight of a sub-sea conduit used in a deep-water wellbore drilling installation. The assembly includes a buoyant sleeve positioned around the conduit between upper and lower stop collar assemblies. The sleeve contains buoyant material forming most of its cross-section, with cross sectional segments thereof each encapsulated in a non-porous resinous material that forms an outer jacket around each segment. In one embodiment, a non-rotating generally circular inside diameter of the sleeve is formed by the thin layer of jacket material bonded directly to an interior reinforcing cage. A narrow gap is formed between the ID of the non-rotating sleeve and the OD of the conduit. The collar assemblies comprise an inner collar rigidly affixed to the conduit and contained within a larger diameter outer shell adapted for rotation relative to the fixed inner collar. | 01-27-2011 |
| 175326000 | Engaging means advances in adjacent hole | 1 |
| 20110120779 | EQUIPMENT FOR DRILLING SECANT HOLES - Equipment for drilling secant holes ( | 05-26-2011 |
