Class 175/325.7 - Held by discrete fastening means tangential to shaft axis

Subclass of Class 175 - Boring or penetrating the earth
Definition: Apparatus where the guide or protector means encircles and
No. of patents: 31
Last issue date: 05/22/2012

Number	Title	Issue Date
8181722	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 ...	05/22/2012
8074747	Stabilizer assemblies with bearing pad locking structures and tools incorporating same Stabilizer assemblies and tools incorporating same may comprise 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 bo...	12/13/2011
7938202	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 aro...	05/10/2011
7370700	Multiple entrance shunt Multiple pathways are provided by which fluid can enter one or more alternate pathway conduits. Entrance tubes can be arranged such that their spacing prevents all of them from being simultaneously obstructed, covered, or otherwise blocked. ...	05/13/2008
7357434	Load ring for lifting by elevator, of casing having no upset A cylindrical ring sized to slide over the box end of an oilfield tubular having a given external diameter, has a shoulder at one its ends and a sidewall along its length. The sidewall has a circumferential groove about its interior surface housing a band which can ...	04/15/2008
7237607	Tubular stabbing protector and method A tubular stabbing protector includes: a plurality of body sections together forming a first opening and a second opening, the first opening sized to be secured over a pin end of an oilfield tubular and the second opening sized to fit over a connection to which the ...	07/03/2007
7159668	Centralizer A centralizer 10 for mounting on a tubular member such as a section of casing, together with one or more stops 42, 48 for retaining the centralizer thereon. The stops 42, 48 are provided with profiles for engaging the centralizer to restrict rot...	01/09/2007
7159619	Thread protector for use on pin end of oilfield tubulars A cylindrical ring sized to slide over the box end of an oilfield tubular having a given external diameter, has a shoulder at one its ends and a sidewall along its length. The sidewall has a circumferential groove about its interior surface housing a band which can ...	01/09/2007
7156171	Dual diameter and rotating centralizer/sub A centralizer for maintaining stand-off and/or centralizing a tubular member inside a larger diameter tubular member, for instance, in a wellbore. The centralizer is provided with bow springs that compress to a minimal diameter around the outer diameter of the sub t...	01/02/2007
7140432	Dual diameter and rotating centralizer/sub and method A dual diameter centralizing sub for maintaining stand-off and/or centralizing a tubular member inside a larger diameter tubular member, for instance, in a wellbore. The centralizer is provided with bow springs that compress into grooves between radially outwardly-e...	11/28/2006
7100641	Protective ducting There is described ducting comprising a plurality of interconnectible elongate ducting components (2, 4) which when assembled define an elongate, longitudinally extending internal channel (22) for receiving a pipe, cable or like elongate member, each d...	09/05/2006
7096940	Centralizer system for insulated pipe A centralizer system is provided for use in a marine riser system with an insulated pipe, which may be a titanium stress joint. The centralizer system utilizes one or more centralizers mounted such that insulation material is provided in an annulus between the one o...	08/29/2006
7090007	Centralizer for wireline tools A centralizer for use in oil well wireline toolstrings comprising a central mounting rod and floating spring mechanisms between which a number of jointed centralizer arms are connected. The jointed centralizer arms have a section with a concave profile disposed near...	08/15/2006
7048064	Multi-unit centralizer A multi-unit centralizer for centralizing or otherwise positioning a tubing string in a well bore. The centralizer has a centralizer hub including multiple hub subunits for removably engaging each other and at least one spacer lug for removably engaging each of the ...	05/23/2006
7025136	Torque reduction tool A tool for reducing torque on work string, eg for gas or oil production, comprises an upper clamp (2), a lower clamp (3) and connection means (4), the three components formed as a unitary structure (1). The tool also comprises bearing mea...	04/11/2006
6464002	Whipstock assembly The present invention discloses a whipstock assembly for use in a wellbore to form a lateral wellbore therefrom. In one aspect, a whipstock is attached to a cutting tool by a shearable connection whereby the whipstock and cutting tool assembly may be run ...	10/15/2002
6457519	Expandable centralizer A centralizer for laterally positioning an instrument in an opening larger in diameter than the diameter of an opening through which the centralizer can freely pass. The centralizer includes spring blades affixed at one end to an outer surface of the inst...	10/01/2002
6250406	Connection arrangement for a two-piece annular body A drill pipe and casing protector comprises an annular body having two pieces with identical edges. A first edge includes at least two opposing formations longitudinally formed thereon whereby when one piece is inverted with respect to the either piece, t...	06/26/2001
6032748	Non-rotatable stabilizer and torque reducer An exemplary stabilizer and torque reducer which will engage a wellbore casing and locate the drill string substantially toward the concentric center of the wellbore casing. The device is capable of being affixed to a drill string at most any location alo...	03/07/2000
6023027	Cable guard having a hinge rod and for protecting cables extending along a tubing string A guard for cables that extend alongside a coupling in a tubing string includes a base and a clamp member that are hingedly interconnected to fit about the coupling and portions of the cables beside the coupling. Hinge elements, formed on sections of the ...	02/08/2000
5810100	Non-rotating stabilizer and centralizer for well drilling operations A non-rotating stabilizer tool is provided for connection within a drilling string for stabilization and centralization of the drill string within a well bore being drilled by a rotary drill bit. The tool incorporates an elongate stabilizer and centralize...	09/22/1998
5806615	Apparatus for use in a wellbore An apparatus for use in a wellbore comprises an inner member mountable on or formed as an integral part of a drill string, and an outer member removably mounted on the inner member. In a preferred embodiment the apparatus can be used as a stabilizer for s...	09/15/1998
5692563	Tubing friction reducer A tubing friction reducer is mounted on a length of tubing within a bore hole. The friction reducer includes a cylindrical body having a first section and a second section hingedly secured around an exterior surface of the coiled tubing, the cylindrical b...	12/02/1997
5553676	Reversible expander Several designs of reversible expanders (10, 50, 100, 150) are disclosed for use on an underground boring tool (14) of the type using an air impact hammer. The reversible expanders allow a borehole of larger diameter than the tool to be formed. The revers...	09/10/1996
5465759	Variable diameter pipe protector A pipe protector is disclosed comprising a tubular rubber member with an inner diameter sized to the approximate outer diameter of a pipe. The protector is a variable diameter pipe protector that prevents slipping on undersized pipes, but can also be used...	11/14/1995
5447207	Downhole tool A stabilizer-type downhole tool comprises an elongate main body. At least one elongate blade lying generally longitudinally along the exterior of the main body projects radially outwardly therefrom. Attachment means cooperative between the main body and t...	09/05/1995
4907661	Drill pipe tubing and casing protectors Each section (1) of a drill pipe string carries a substantially annular protector (2) that is movable in a freely rotatable manner around (4) the longitudinal axis of the section (1) concerned. Each protector (2) is also movable lengthwise (3) throughout ...	03/13/1990
4865138	Drill string stabilizer A stabilizer for a drilling string comprises a one-piece metal loop, stabilizing blades, and tightening bolts co-operating with internally threaded bores to draw the end portions of the loop towards each other. One end portion is formed with an involute c...	09/12/1989
4381821	Blast joint and protection element therefor A protection structure for a tubular member, such as a blast joint, and a protection element therefore which is an abrasion resistant half sleeve with an inward facing tongue and groove along one axial edge, an outward facing tongue and groove along the o...	05/03/1983
4275935	Drilling stabilizer A stabilizer for a drill string is disclosed. The stabilizer is of split configuration having an open slot or split which extends for the length of the stabilizer. The split stabilizer is slipped over a drill collar and fasteners are used to draw the spli...	06/30/1981
4072369	Drill pipe stabbing protector A stabbing protector device for use in oil well drilling operations which requires the continuous addition of pipe, one joint or stand to another, in the formation of drill pipe strings. The device is constituted generally of a segmented, rigid, tubular, ...	02/07/1978

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Class 175/325.7 - Held by discrete fastening means tangential to shaft axis