Baker Hughes Corporation

David Chilcoat

Larry James Parmeter

Christopher Marvin Brunner

Jason Ives

Baojun Song

Scott C Strattan

Kevin R Bierig

Dan A Merrill

Lance Travis Robinson

Alan Lin Kao

A pump having an insert between an impeller and diffuser, where the insert includes an annulus that is in communication with fluid flow passages in the impeller and diffuser. The passages and annulus define a fluid flow path through the pump. Vanes are provided in the annulus that can pivot and vary the cross sectional area of the fluid flow path. Regulating the fluid flow path area alters the flow rate where the pump operates at its maximum efficiency. Thus by monitoring flow through the pump, the vanes can be adjusted so the flow rate of maximum efficiency corresponds to the actual flow rate.

Adjustable vane diffuser insert for electrical submersible pump

An impeller vane includes at least one groove on a high pressure or working surface of the impeller vane to increase pump efficiency and reduce pump power requirements. The impeller vane includes a groove or a plurality of grooves formed on the high pressure surface of the vane. The grooves extend from a leading end of the vane to a trailing end of the vane. The grooves define ridges on either side of each groove that extend the length of the groove.

High efficiency impeller

A centrifugal pump has a stationary diffuser with a bore. A thrust bearing is pressed into the diffuser bore and has a curved interior. A thrust runner having a curved exterior is correspondingly and closely received by the thrust bearing interior. The thrust runner is keyed to a shaft and transmits thrust from a rotating impeller to the diffuser via the thrust bearing. The curved surface of the thrust bearing allows for handling of both axial and radial thrust without the need for multiple thrust bearings. The increased surface area of the curved surface in the thrust bearing can also handle higher loads.

Reduced profile abrasion resistant pump thrust bearing

An electrical submersible pumping system having a pump, a motor, a shaft connecting the pump and motor. Coaxially stacked rotating impellers and stationary diffusers are coaxially housed within the pump. Radial ports are formed in a hub of the diffusers that direct fluid pressurized by an impeller to a cavity formed on the shroud of the impeller. Axial ports are formed in the shrouds of the impellers that direct fluid from the cavity to a fluid flow passage within the impeller. Strategic placement and sizing of the radial and axial ports balances thrust forces exerted onto the impeller.

Axial thrust balanced impeller for use with a downhole electrical submersible pump

A centrifugal pump has impellers that are not connected by a central shaft. More specifically, each of the impellers has a separate hub segment that interlocks with an adjacent hub segment from another impeller. The hub segments are rotated in unison with each other to rotate the impellers.

Shaftless centrifugal pump

An improved seal assembly for a downhole electrical submersible pump assembly.

Downhole electrical submersible pump seal

A rotary pump having thrust bearings includes a system for equalizing the loading on the thrust bearings. The thrust bearings are each supported on pistons that are in fluid communication with a hydraulic circuit. The hydraulic circuit has substantially the same pressure throughout, thereby floating each piston at the same pressure to provide an equal support force to each thrust bearing via each piston.

Growing community of inventors

Jenks, OK, United States of America

David Chilcoat