Patents by Inventor David Milton Eslinger

David Milton Eslinger has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20210140290
    Abstract: A system includes a reception interface that receives sensor data of an artificial lift system disposed at least in part in a well; an analysis engine that, based at least in part on a portion of the sensor data, outputs values of state variables of the artificial lift system; and a transmitter interface that transmits information, based at least in part on a portion of the values of state variables, to a surface controller operatively coupled to the artificial lift system.
    Type: Application
    Filed: March 8, 2018
    Publication date: May 13, 2021
    Inventors: David Milton Eslinger, Emmanuel Coste, Jeffery P. Anderson
  • Patent number: 10968918
    Abstract: 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.
    Type: Grant
    Filed: September 10, 2014
    Date of Patent: April 6, 2021
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Arthur I. Watson, David Milton Eslinger
  • Patent number: 10890189
    Abstract: A technique facilitates operation of a pump, such as a submersible pump in an electric submersible pumping system. The pump has a sequential diffuser and impeller which are operationally engaged via a thrust device. In some embodiments, the diffuser and impeller also are operationally engaged via a front seal. A bypass channel is used to route a flow of fluid from a tip region of the impeller to an inlet region of the impeller without passing through the thrust device during operation of the pump.
    Type: Grant
    Filed: June 1, 2016
    Date of Patent: January 12, 2021
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventor: David Milton Eslinger
  • Patent number: 10883506
    Abstract: 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.
    Type: Grant
    Filed: May 10, 2017
    Date of Patent: January 5, 2021
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: David Milton Eslinger, Spyridon Joseph Kotsonis, David Hoyle, Alejandro Camacho Cardenas, Arthur Watson
  • Publication number: 20200386091
    Abstract: A method for evaluating operation of an electric submersible pumping (ESP) system is shown. The method includes receiving first sensor data from sensors monitoring operation of the ESP system. The method further includes using a physical model of the electric submersible pumping system to determine second sensor data. The method further includes processing the first sensor data and the second sensor data to determine an first system state as a function of operating time. The method further includes generating a degradation model and applying the degradation model to the first sensor data and the second sensor data to generate a time prediction. The method further includes adjusting operation of the electric submersible pumping system in response to the predictor of the time to failure of the components.
    Type: Application
    Filed: August 24, 2020
    Publication date: December 10, 2020
    Applicant: Sensia LLC
    Inventor: David Milton Eslinger
  • Patent number: 10753192
    Abstract: A technique facilitates formulation of predictions regarding the run life of a pumping system. Based on the predicted run life, and factors affecting that predicted run life, corrective actions may be selected and implemented. The corrective actions may involve adjustment of operational parameters regarding the pumping system so as to prolong the actual run life of the pumping system. The technique utilizes an algorithm which combines various models, e.g. physical models and degradation models, to provide various failure/run life predictions. The various models may utilize a variety of sensor data, such as actual sensor data and virtual sensor data, to both evaluate the state of the pumping system and the predicted run life of the pumping system.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: August 25, 2020
    Assignee: Sensia LLC
    Inventor: David Milton Eslinger
  • Patent number: 10738794
    Abstract: A technique employs a system and methodology for improving sand control in pumps. The technique may be used in centrifugal pumps by providing uniquely constructed rib feature to facilitate sand control and thus reduction of erosion due to sand in the pumped fluid. The improved sand control is useful in centrifugal pumps employed in a variety of oilfield applications, such as in electric submersible pumping systems positioned downhole in a wellbore to pump oil or other fluids. The rib feature may be used in combination with a shield and arranged along diffuser bowl walls or other diffuser walls within sequential pump stages.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: August 11, 2020
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Abhisek Robert Rao, Jerome Ang Sze Jiunn, David Milton Eslinger, Tony R. Morrison
  • Publication number: 20200208639
    Abstract: A method for controlling an ESP-lifted well in an optimal fashion using the ESP speed and choke opening as actuators subject to operational constraints.
    Type: Application
    Filed: April 18, 2018
    Publication date: July 2, 2020
    Inventors: David Milton Eslinger, Yves-Marie Clet Robert Subervie, Emmanuel Coste, Anna Danuta Sadowska, Leo Vincent Steenson
  • Publication number: 20200116164
    Abstract: 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.
    Type: Application
    Filed: August 19, 2019
    Publication date: April 16, 2020
    Inventors: Hao Lam, Arthur I. Watson, Jacques Orban, Lauro De Camargo, David Milton Eslinger
  • Patent number: 10451079
    Abstract: An electric submersible pump (ESP) can include a shaft; an electric motor configured to rotatably drive the shaft; a housing; a stack of diffusers disposed in the housing; and impellers operatively coupled to the shaft. Various other apparatuses, systems, methods, etc., are also disclosed.
    Type: Grant
    Filed: February 11, 2015
    Date of Patent: October 22, 2019
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Lye Heng Chang, Jerome Ang Sze Jiunn, Kean Wee Cheah, David Milton Eslinger, Ruslan Alexandrovich Bobkov
  • Patent number: 10385875
    Abstract: 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.
    Type: Grant
    Filed: September 15, 2014
    Date of Patent: August 20, 2019
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Hao Lam, Arthur I. Watson, Jacques Orban, Lauro De Camargo, David Milton Eslinger
  • Publication number: 20180328365
    Abstract: 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.
    Type: Application
    Filed: May 10, 2017
    Publication date: November 15, 2018
    Inventors: David Milton Eslinger, Spyridon Joseph Kotsonis, David Hoyle, Alejandro Camacho Cardenas, Arthur Watson
  • Publication number: 20180195514
    Abstract: A mixed-flow impeller for an electric submersible pump can include a lower end and an upper end; a hub that includes a through bore that defines an axis; blades that extend at least in part radially outward from the hub where each of the blades includes a leading edge and a trailing edge; an upper balance ring that includes a radially inward facing balance chamber surface and a radially outward facing diffuser clearance surface; and an upper guard ring disposed radially outwardly from the upper balance ring where the upper guard ring includes an axially facing diffuser clearance surface that is disposed axially between the trailing edges of the blades and the upper end.
    Type: Application
    Filed: June 30, 2015
    Publication date: July 12, 2018
    Inventors: Kean Wee CHEAH, David Milton ESLINGER
  • Publication number: 20170350399
    Abstract: A technique facilitates operation of a pump, such as a submersible pump in an electric submersible pumping system. The pump has a sequential diffuser and impeller which are operationally engaged via a thrust device. In some embodiments, the diffuser and impeller also are operationally engaged via a front seal. A bypass channel is used to route a flow of fluid from a tip region of the impeller to an inlet region of the impeller without passing through the thrust device during operation of the pump.
    Type: Application
    Filed: June 1, 2016
    Publication date: December 7, 2017
    Inventor: David Milton Eslinger
  • Patent number: 9810033
    Abstract: Apparatus and methods for performing subsea drilling operations. An example method may include receiving drilling fluid from a drilling fluid source at a first pressure by a pressure exchanger located within a subsea environment and receiving seawater from the subsea environment at a second pressure by the pressure exchanger to increase pressure of the drilling fluid within the pressure exchanger to a third pressure. The second and third pressures are substantially greater than the first pressure. The method may further include discharging the drilling fluid from the pressure exchanger into piping to communicate the drilling fluid to a drill forming a wellbore in a seabed and discharging the seawater from the pressure exchanger into the subsea environment.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: November 7, 2017
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Rod William Shampine, David Milton Eslinger
  • Publication number: 20170248159
    Abstract: A technique employs a system and methodology for improving sand control in pumps. The technique may be used in centrifugal pumps by providing uniquely constructed rib feature to facilitate sand control and thus reduction of erosion due to sand in the pumped fluid. The improved sand control is useful in centrifugal pumps employed in a variety of oilfield applications, such as in electric submersible pumping systems positioned downhole in a wellbore to pump oil or other fluids. The rib feature may be used in combination with a shield and arranged along diffuser bowl walls or other diffuser walls within sequential pump stages.
    Type: Application
    Filed: July 31, 2015
    Publication date: August 31, 2017
    Inventors: Abhisek Robert RAO, Jerome ANG SZE JIUNN, David Milton ESLINGER, Tony R. MORRISON
  • Publication number: 20170175516
    Abstract: A technique facilitates formulation of predictions regarding the run life of a pumping system. Based on the predicted run life, and factors affecting that predicted run life, corrective actions may be selected and implemented. The corrective actions may involve adjustment of operational parameters regarding the pumping system so as to prolong the actual run life of the pumping system. The technique utilizes an algorithm which combines various models, e.g. physical models and degradation models, to provide various failure/run life predictions. The various models may utilize a variety of sensor data, such as actual sensor data and virtual sensor data, to both evaluate the state of the pumping system and the predicted nm life of the pumping system.
    Type: Application
    Filed: March 31, 2015
    Publication date: June 22, 2017
    Inventor: David Milton ESLINGER
  • Patent number: 9683571
    Abstract: A centrifugal pump stage with increased compressive load capacity is provided. In an implementation, a centrifugal pump stage includes a diffuser with outside wall capable of supporting increased axial forces. A mating surface of the outer wall can support axial forces generated by a stack of subsequent pump stages across the entire thickness of the outer wall. The diffuser can be a two-piece assembly including a load bearing module and a flow diffusing module. The load bearing module may be a cylinder of strong tubular alloy while the flow diffusing module can be separately cast in a manner that improves hydraulic efficiency. Various means for radially positioning the pump stages relieve the load bearing module from the task of aligning additional pump stages. A single rigid tube may also be used as the load bearing module for multiple pump stages. The tube may be made with a thin wall to increase pump volume.
    Type: Grant
    Filed: February 3, 2014
    Date of Patent: June 20, 2017
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Tony R. Morrison, David Milton Eslinger, Kean Wee Cheah, Lye Heng Chang, Raju Ekambaram, Narayanan Lakshmanan
  • Publication number: 20170167498
    Abstract: An electric submersible pump (ESP) can include a shaft; an electric motor configured to rotatably drive the shaft; a housing; a stack of diffusers disposed in the housing; and impellers operatively coupled to the shaft. Various other apparatuses, systems, methods, etc., are also disclosed.
    Type: Application
    Filed: February 11, 2015
    Publication date: June 15, 2017
    Inventors: Lye Heng Chang, Jerome Ang Sze Jiunn, Kean Wee Cheah, David Milton Eslinger, Ruslan Alexandrovich Bobkov
  • Publication number: 20160222976
    Abstract: 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.
    Type: Application
    Filed: September 10, 2014
    Publication date: August 4, 2016
    Inventors: Arthur I. Watson, David Milton Eslinger