Schlumberger Technology Corporation

Arthur Ignatius Watson

Michael H Du

David Milton Eslinger

John David Rowatt

Jacques J Orban

Gregory Howard Manke

Grant T Harris

Kevin T Scarsdale

Arunkumar Arumugam

Raju Ekambaram

Obinna Ilochonwu

Diego A Narvaez

Pradeep Mahadevan

Wayne L Costa

Hao Lam

Adunola Ige

Steven Dornak

Lauro De Camargo

You Cheng Jee

Christopher Featherby

Ramez Guindi

Kenneth Armstrong

Chris E Featherby

Jose Angel Caridad Urena

Ian Roberge

Murat Ocalan

David C Hoyle

Alain P Dorel

Alejandro Camacho Cardenas

John Fremont Benton

Jason Michael Kamphaus

Tyson R Messick

Michael A Dowling

Mark McCorry

David Garrett

Patrick Zhiyuan Ma

John A Booker

Harryson Sukianto

Dwight C Chilcoat

Michael W Miller

Patrick M McCartney

Narayanan Lakshmanan

Allan D Ross

Brigitte Finkiewicz

John Booker

Jaiprakash Natarajan

Shivam Kumar Singh

Mark E Allen

David Rowatt

Chad Bremner

Sergey Pisetskiy

Donald Jamieson

Adrian Carr

Jeffrey Miller

Arukumar Arumugam

Peter Julstrom

Parveen Sayela

Josh Brady

Spyridon Joseph Kotsonis

Cody Casey

Stanislav Ivanov

An electric submersible pump (ESP) system. The ESP system may comprise a motor, a pothead coupled to the motor, and a cable coupled to the pothead via a motor lead extension (MLE) to provide power to the motor.

High pressure resistant and partial discharge reduced MLE

A protector for an electric submersible pump includes a plurality of chambers, with adjacent or consecutive pairs of chambers coupled, e.g., fluidly coupled, via a series or parallel body. The body defines two separate hydraulic circuits, which allows for the inclusion of a shaft seal, even when the body couples consecutive chambers in a parallel configuration or couples to a thrust bearing chamber. The shaft tube circuit can include a compensator and/or a relief valve.

Electric submersible pump systems

A technique facilitates the reduction of vibration in a variety of devices which have rotating components. According to an embodiment, a system may combine a shaft, a rotor mounted along the shaft for rotation with the shaft, and a vibration reduction system. The vibration reduction system incorporates the use of a key and keyway in a manner which helps balance the rotor, thus reducing vibration during operation. In some applications, the vibration reduction system is able to reduce eccentric positioning of the rotor on the shaft due to, for example, assembly clearances.

System and method for vibration control

Rotor bearings are provided. The motor bearing can be used in an electric submersible pump motor. The bearing can include a body and one or more anti-rotation pins disposed partially in a groove in an outer surface of the body and configured to be received in a corresponding keyway in an inner diameter of a stator. The anti-rotation pin prevents or inhibits rotation of the bearing relative to the stator.

Rotor bearing design for downhole motors

A system and methodology are provided for enhancing the life and usefulness of a thrust bearing assembly in a submersible pumping system component. The technique utilizes a thrust runner positioned adjacent a thrust bearing in the submersible pumping system component. The thrust runner is rotated relative to the thrust bearing via a shaft. Gas that may accumulate in a lower region beneath the thrust runner is vented through a passageway from the lower region to an upper region above the thrust runner. The gas is vented to help maintain a hydrodynamic fluid film between the thrust runner and the thrust bearing.

Submersible pumping system thrust bearing gas venting

An electric submersible pump (ESP) with reduced vibration is provided. In an implementation, an ESP section has radial bearings placed at shaft locations of reduced vibration to reduce wear. The locations of reduced vibration are selected to avoid areas of high vibration and vibrational waves that reinforce each other due to structure resonance and natural excitation frequencies. In an implementation, a radial bearing is positioned at a node of reduced vibration of a standing vibrational wave. In an implementation, a succession of multiple radial bearings are spaced at different intervals from each other to avoid conventional even spacing of the bearings that causes standing waves, resonance waves, and vibrational waves at natural excitation frequencies. In an implementation, a span between adjacent radial bearings is selected to spare other adjacent bearings at different spans the effects of vibrations that may extend over a range of excitation frequencies in the ESP section.

Electric submersible pump with reduced vibration

Submersible pumping system with a motor protector having a thrust runner, retention system, and passageway allowing gas flow from a lower region into an upper region

A technique facilitates removal of gas from a gas-sensitive region in an electric submersible pumping system. A gas purging system is integrated into the electric submersible pumping system. During operation of the electric submersible pumping system, the gas purging system also is operated to move gas away from the gas-sensitive region, e.g. a thrust bearing region, and to a collection region or other suitable region. In some embodiments, the gas which accumulates in a collection region may be discharged to a region external of the electric submersible pumping system.

Gas purging for electric submersible pumping system

Wear rings for electric submersible pump (ESP) stages are provided. An example ESP has one or more running clearance seals reinforced with high-hardness wear rings. Ceramics and carbides may provide the high hardness for the wear rings, but such substances are more brittle than metals and have different coefficients of thermal expansion than metals. For protection, each high-hardness wear ring may be mounted with an elastic cushioning scheme. The elastic mounting preserves each wear ring from shock, stress, and breakage from thermal expansion and contraction of an adjacent pump part. Each high-hardness wear ring may also have a low-stress driving mechanism that cushions the rotational force imparted to the wear ring when the ESP pump is being powered. In some implementations, the elastic mounting scheme may also serve as the low-stress driving mechanism for the high-hardness wear ring.

Wear rings for electric submersible pump stages

An electric submersible pump system can include a shaft; at least one impeller operatively coupled to the shaft; and a bearing assembly that rotatably supports the shaft, where at least one component of the electric submersible pump includes a volumetric composite material that includes polycrystalline diamond material and at least one metallic material.

Unitary thick diamond composite downhole tool components

A system can include an interface to receive sensed data and economic data; a production control framework that includes a module for modeling motor efficiency of an electric submersible pump, a module for modeling gas composition of a fluid being pumped by an electric submersible pump, a module for modeling solid dynamics in a fluid being pumped by an electric submersible pump, a module to update one or more of the modules for modeling in response to receipt of data via the interface; and an interface to output control commands to a controller for an electric submersible pump based at least in part on data received by the interface and analyzed by the production control framework. Various other apparatuses, systems, methods, etc., are also disclosed.

Submersible pump control

An electric submersible pump device has a pump and a motor. The motor can be adjacent to the pump. A support member supports the sensor and has a length so that the sensor is located a first distance downhole from a downhole distal end of the motor.

Electric submersible pumping sensor device and method

A collet coupling for electric submersible pump shafts is provided. An example coupling for joining two shafts includes a tubular coupling member, and collet for fixing the coupling to a shaft via expandable fingers with ribs for latching into a groove on each shaft. Shoulders in the groove transmit axial load forces between the two shafts through the ribs, fingers, and collet. An example method includes attaching one end of the coupling to a shaft of an ESP unit already installed in a well, adjusting an axial reach of a threaded collet for attachment to a second shaft of an upper ESP unit, and engaging ribs of the collet into a groove of the second shaft to couple the two shafts. A sliding retainer allows quick release. An axial deviation distance may be factory-stamped on the ESP units for quick length adjustment and installation of collet couplings in the field.

Collet coupling for electric submersible pump shafts

Growing community of inventors

Sugar Land, TX, United States of America

Arthur Ignatius Watson