Randy D Roberts

US Patent:

20210332688, Oct 28, 2021

Filed:

Oct 5, 2018

Appl. No.:

16/476816

Inventors:

- Houston TX, US
Randy S. ROBERTS - Tulsa OK, US
Larry J. PARMETER - Broken Arrow OK, US

International Classification:

E21B 43/38
E21B 43/12

Abstract:

A gas separator operationally coupled between a submersible pump and a motor for use in downhole reservoirs includes an intake housing and an inner intake assembly. The intake housing includes at least two sets of intake ports along an upper section adjacent to the pump with ports in a set vertically offset and sets horizontally offset. The inner intake assembly includes a separation chamber, a self-orienting intake rotatable around a central axis and having at least one communication port, and a port controller. The port controller functions to position the communications port toward the bottom of the gas separator when the gas separator is positioned horizontally in a downhole wellbore. The intake housing allows reservoir fluid traveling downstream to pass through intake ports and into the separation chamber through the communication ports.

US Patent:

20190309768, Oct 10, 2019

Filed:

Jan 11, 2018

Appl. No.:

16/462913

Inventors:

- Houston TX, US
Michael A. MURRAY - Claremore OK, US
Wesley John NOWITZKI - Tulsa OK, US
Randy S. ROBERTS - Tulsa OK, US
David Linn SELF - Laurel MS, US

International Classification:

F04D 29/70
F04D 13/10
F04D 29/42
E21B 43/38

Abstract:

An electric submersible pump (ESP) dual gas and sand separator is described. An ESP system includes a dual gas and sand separator having a fluid flow pathway including an upward turn and a downward turn, the upward turn separating solids from a fluid flowing through the pathway and the downward turn separating gas from the fluid, the dual separator including a sand sump below the fluid flow pathway. The separator includes tubing that extends below the ESP assembly, at least a portion of the tubing including two concentric pipes. A dual gas and sand separating method includes causing pumped fluid to turn from upwards to downwards and then upwards again in a tortious pathway below the ESP assembly before the fluid travels into a centrifugal pump intake, and collecting solids that separate out of the multiphase fluid in a solid sump coupled below the tortious pathway.

US Patent:

20190285071, Sep 19, 2019

Filed:

Feb 8, 2018

Appl. No.:

16/345154

Inventors:

- Houston TX, US
Wesley John NOWITZKI - Tulsa OK, US
Randy S. ROBERTS - Tulsa OK, US

Assignee:

Halliburton Energy Services, Inc. - Houston TX

International Classification:

F04D 13/10
F04D 29/62

Abstract:

A diffuser anti-rotation system and apparatus is described. A diffuser anti-rotation system includes a circumferential coupling ring interlocked between a top of a first diffuser and a bottom of an adjacent diffuser. One end of the first diffuser includes at least one male register tab, the opposing end of the adjacent diffuser has at least one female register slot, and the coupling ring interlocks with the male register tab and the female register slot. One of the male register tabs and one of the female register slots are aligned axially and a single projection from the coupling ring interlocks with both the male register tab and the axially aligned female register slot. Impellers are mated with and rotating within each of the first diffuser and the adjacent diffuser, and the interlocked coupling ring prevents rotation of the first diffuser with respect to the adjacent diffuser.

US Patent:

20190162063, May 30, 2019

Filed:

Mar 13, 2018

Appl. No.:

16/091947

Inventors:

- Houston TX, US
Randy S. ROBERTS - Tulsa OK, US
Thomas John GOTTSCHALK - Houston TX, US

International Classification:

E21B 43/38
F04D 7/04
F04D 13/08
E21B 43/12

Abstract:

An electric submersible pump (ESP) gas separator is described. An ESP gas separator includes a propeller upstream of a fluid entrance to a crossover, the crossover including a production pathway and a vent pathway, and the propeller including a plurality of blades comprising washout twist, wherein gas rich fluid of multi-phase fluid traveling through the gas separator flows through the propeller and into the vent pathway, and gas poor fluid of the multi-phase fluid flows around the propeller and then through the production pathway. An ESP assembly includes a gas separator between a centrifugal pump and an induction motor, the gas separator serving as an intake for fluid into the centrifugal pump and including a propeller in a separation chamber, the propeller comprising a plurality of blades, each blade having a pitch that increases in coarseness from a hub towards a shroud of the propeller.

US Patent:

20180017066, Jan 18, 2018

Filed:

Jul 17, 2017

Appl. No.:

15/651907

Inventors:

- Tulsa OK, US
Joshua Wayne Webster - Owasso OK, US
Randy S. Roberts - Tulsa OK, US
Joseph Dean Butler - Tulsa OK, US
John Vanderstaay Kenner - Houston TX, US
Thomas John Gottschalk - Houston TX, US

International Classification:

F04D 29/04
F04D 13/08
F04D 29/22
F16C 35/02
F04D 13/10

Abstract:

A bushing anti-rotation system and apparatus. A bushing anti-rotation system includes an impeller and diffuser stage including a rotatable shaft extending longitudinally through the stage, the diffuser having an inner diameter defining a bore, a bearing set including a bushing pressed into the inner diameter, and a rotatable sleeve inward of the bushing, and means for wedging the bushing against the inner diameter of the diffuser, wherein the means for wedging provides a mechanical lock against rotation of the bushing. The means for wedging the bushing against the diffuser includes one of a key wedged between an eccentric cavity in the diffuser and a notch in the bushing, a pin protruding from the diffuser against a flattened portion of the bushing, a square-shaped bushing secured into a square-shaped bore, a bent retaining ring having a bent end that wedges against a diffuser groove wall, or a combination thereof.

US Patent:

20170159668, Jun 8, 2017

Filed:

Dec 1, 2016

Appl. No.:

15/367042

Inventors:

- Tulsa OK, US
Randy S. Roberts - Tulsa OK, US

International Classification:

F04D 29/046
F04D 13/08
F16C 35/02

Abstract:

A press-fit bearing locking system, apparatus and method is described. A press-fit bearing locking system includes a diffuser having a diffuser groove on an inner diameter (ID), a bushing comprising an outer diameter (OD) press-fit into the grooved ID of the diffuser, the OD of the bushing having a bushing groove tracing a path of the diffuser groove, and a high thermal expansion material (HTEM) key seated within the bushing groove. A press-fit bearing locking method includes seating a HTEM key inside a groove on an OD of a bushing, press-fitting the bushing with HTEM key into a diffuser such that the bushing groove is opposite a groove on an ID of the diffuser, operating an electric submersible pump assembly including the diffuser during a temperature rise, and allowing the HTEM key to expand into the diffuser groove during the temperature rise to lock the bushing against the diffuser.

US Patent:

20160190893, Jun 30, 2016

Filed:

Mar 9, 2016

Appl. No.:

15/065420

Inventors:

- Tulsa OK, US
Brett D. Leamy - Claremore OK, US
Randy S. Roberts - Tulsa OK, US
Gregory Austin Davis - Broken Arrow OK, US
John Vanderstaay Kenner - Houston TX, US

International Classification:

H02K 5/167
H02K 5/132

Abstract:

A motor bearing for an electric submersible motor is described. An electric submersible motor includes a rotatable motor shaft extending longitudinally through a submersible motor, a bearing sleeve secured to the rotatable motor shaft in between two adjacent rotor sections, a motor bearing radially outward from the bearing sleeve and pressed against a stator bore, wherein the motor bearing comprises a series of magnets dispersed around an outer diameter of the motor bearing, and an insulation layer covering a surface of each magnet of the series of magnets, wherein the insulation layer faces the stator bore. A motor bearing includes a series of recessions dispersed around an outer axial surface of a motor bearing, a magnet inset in each recession of the series of recessions, and an insulation layer coating a surface of each of the magnets.

US Patent:

20150349603, Dec 3, 2015

Filed:

May 27, 2015

Appl. No.:

14/722852

Inventors:

- Tulsa OK, US
Brett D. Leamy - Claremore OK, US
Randy S. Roberts - Tulsa OK, US
Gregory Austin Davis - Broken Arrow OK, US
John Vanderstaay Kenner - Houston TX, US

International Classification:

H02K 5/167
H02K 5/132

Abstract:

A motor bearing for an electric submersible motor is described. An electric submersible motor includes a rotatable motor shaft extending longitudinally through a submersible motor, a bearing sleeve secured to the rotatable motor shaft in between two adjacent rotor sections, a motor bearing radially outward from the bearing sleeve and pressed against a stator bore, wherein the motor bearing comprises a series of magnets dispersed around an outer diameter of the motor bearing, and an insulation layer covering a surface of each magnet of the series of magnets, wherein the insulation layer faces the stator bore. A motor bearing includes a series of recessions dispersed around an outer axial surface of a motor bearing, a magnet inset in each recession of the series of recessions, and an insulation layer coating a surface of each of the magnets.