Other

Tomahawk Downhole, LLC

Chad Daigle

Thomas E Falgout, Jr

Mark Hunt

Toby S Baudoin

A method of manufacturing a radial bearing assembly having a bearing surface created from a plurality of spherical bearing inserts positioned within insert retainer channels extending diagonally along the length of the bearing sleeve. The method of manufacture includes providing insert retainer channels having a curved bottom surface. The method of manufacture utilizes a mold for simultaneously brazing and bonding the spherical bearing inserts to the surface of the bearing sleeve.

Spherical bearing insert rotary bearing and method of manufacture

A radial bearing assembly and method of manufacture that provides a radial bearing assembly having a plurality of spherical bearing inserts, such as ball-shaped carbide inserts, bonded to a bearing sleeve. The bearing sleeve may include insert retainer channels, including insert retainer channels that extend diagonally or in a helical or spiral path along the length of the bearing sleeve. The method of manufacture utilizes a mold for simultaneously brazing and bonding the spherical bearing inserts to the surface of the bearing sleeve.

A bearing assembly and method of construction that provides a bearing having a plurality of individual flat bearing disc inserts, such as carbide inserts, supported directly upon a flat insert support surface. The method of construction utilizes a mold for simultaneously brazing the inserts to the bearing surface.

Rotary bearing and method of manufacture

A down hole drilling motor shaft security apparatus is disclosed. The apparatus has a general body housing threadedly attached to a lower radial bearing housing and an output shaft extending from the lower radial bearing housing. Within the general body housing is a thrust bearing assembly that secures a portion of the output shaft within the general body housing and the lower radial bearing housing. An intermediate sleeve having a capture groove of an elongated predetermined width is threadedly attached to the output shaft. An interference structure that is secured to the general housing extends radially into the capture groove in a manner that prevents axial loads from being transmitted to the intermediate sleeve from the interference structure while the bearing assembly is intact. The interference structure is configured to secure the intermediate sleeve and the output shaft to the general housing by engagement with the capture groove of the intermediate sleeve in the event of axial movement of the intermediate sleeve a preselected amount.

Motor shaft security apparatus

A bearing assembly is situated to conduct axial forces between the general housing and the output shaft by way of an intermediate sleeve that is secured to the output shaft outside the general housing and is axially confined by a bearing assembly secured to the general housing.

A hermetic seal functions as a closure between opposite ends of the coupling by combining a metal sleeve and an elastomer sleeve extension. The metal sleeve is sealingly attached to the outer surface of one end of the coupling and the elastomer sleeve, sealingly attached to the metal sleeve, is attached at the distal end to the other end of the coupling. As an alternative, the distal end may be bonded to a second metal sleeve sealingly attached to the other end of the coupling. The seal may be convoluted, with multiple convolutions.

Sealed flexible motor coupling

As a serial element of a drill string, the drill string is adjustably bent by rotating one end of the sub relative to the other end. The opposite ends rotate about a tilted center line such that in one rotational position the sub is straight. One half turn of one end relative to the other bends the sub to the maximum angle. Between straight and maximum bend, any angle can be achieved by control of the amount of the relative rotation between the opposite ends of the sub.

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Lafayette, LA, United States of America

Chad Daigle