Kalsi Engineering, Inc.

Masx Energy Services Group, Inc.

Patricio Daniel Alvarez

Manmohan Singh Kalsi

Lannie Laroy Dietle

John Erick Schroeder

Jaw-Kuang Wang

Thomas Floyd Bailey

Larry F Moeller

A rotary shaft sealing assembly in which a first fluid is partitioned from a second fluid in a housing assembly having a rotary shaft located at least partially within. In one embodiment a lip seal is lubricated and flushed with a pressure-generating seal ring preferably having an angled diverting feature. The pressure-generating seal ring and a hydrodynamic seal may be used to define a lubricant-filled region with each of the seals having hydrodynamic inlets facing the lubricant-filled region. Another aspect of the sealing assembly is having a seal to contain pressurized lubricant while withstanding high rotary speeds. Another rotary shaft sealing assembly embodiment includes a lubricant supply providing a lubricant at an elevated pressure to a region between a lip seal and a hydrodynamic seal with a flow control regulating the flow of lubricant past the lip seal. The hydrodynamic seal may include an energizer element having a modulus of elasticity greater than the modulus of elasticity of a sealing lip of the hydrodynamic seal.

Rotary shaft sealing assembly

A wedge gate valve having a valve body defining a valve chamber and flow passages and upwardly diverging circular seat surfaces of circular, flat configuration and defining seat planes. A valve disk or wedge having downwardly converging sealing surfaces is movable within said valve chamber between open and closed positions for controlling flow through the valve. Pressure boundary plates connected by hubs to the valve disk define the sealing surfaces of the disk and have bottom corners that establish line contact with the downstream seat surface and prevent any portion of said sealing surfaces of said valve disk from crossing the sealing plane of the downstream seat in the event of flow responsive downstream movement of the valve disk during its opening and closing movement. Guide ears of the disk are provided with flexible upper and lower extremities and rounded or chamfered inner end surfaces to minimize localized peak contact stress with disk guide rails of the valve body. The center section of the disk is rendered flexible by the provision of an internal transverse cavity that extends completely through the center section or is located centrally of the center section to define flexible walls between the hubs to thus provide for disk flexibility for overcoming the tendency for disk binding. A valve actuator for opening and closing the valve disk is provided with an adjustable downstop to prevent overtravel of the disk during seating.

Flexible wedge gate valve

A drilling head for the controlled operation of the drill string while diverting well fluids from the well. The drilling head incorporates a kelly drive and at least one stripper rubber which rotate with the drill string extending through the drilling head. Rotation of the drive bushing and stripper rubber are controlled by bearings disposed in a bearing chamber of the drilling head through which lubricant is circulated to reduce friction and cool the bearings. A turbine ring attached to the lock nut ring of the kelly drive circulates lubricant through the bearing chamber as it rotates in association with the drive assembly of the drilling head. The turbine pump ring forces circulation of lubricant as the drive assembly rotates in addition to the circulation by the remove lubricant pump or in the event the remote pump fails to operate. The turbine ring includes a plurality of angular slots to force circulation of the lubricant as the drive assembly rotates.

Turbine pump ring for drilling heads

Growing community of inventors

Richmond, TX, United States of America

Patricio Daniel Alvarez