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: 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
  • Patent number: 9394909
    Abstract: A submersible pump housing with seal bleed ports is provided. In an implementation, a pump housing for electric submersible pumps (ESPs), such as a centrifugal ESP, has end seals that are located inside or further inboard toward the high thrust pressure generated by the pump, than the threaded ends of the pump housing. The inboard seals contain and seal off the pump pressure and spare the threaded regions that are more pressure-vulnerable from the pump's high pressure interior, thereby increasing the pressure rating of the entire housing. Leak ports or bleed ports are provided further outboard of the end seals to relieve fluid seeping from inside the submersible pump housing past each end seal. A plate may be added to direct small amounts of fluid escaping from the end seals away from the wellbore casing in which an ESP is situated.
    Type: Grant
    Filed: September 6, 2012
    Date of Patent: July 19, 2016
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventor: David Milton Eslinger
  • Patent number: 8894069
    Abstract: Inflatable packers are provided with one or more components to improve longevity and/or functionality. One or more of the packer components utilizes reinforced materials incorporated in a manner that enables the improved longevity and/or functionality.
    Type: Grant
    Filed: November 28, 2006
    Date of Patent: November 25, 2014
    Assignee: Schlumberger Technology Corporation
    Inventors: Zheng Rong Xu, Frank Espinosa, John R. Lovell, Pierre-Yves Corre, David Milton Eslinger
  • Publication number: 20140294575
    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: Application
    Filed: February 3, 2014
    Publication date: October 2, 2014
    Applicant: Schlumberger Technology Corporation
    Inventors: Tony R. Morrison, David Milton Eslinger, Kean Wee Cheah, Lye Heng Chang, Raju Ekambaram, Narayanan Lakshmanan
  • Publication number: 20140209291
    Abstract: A submersible pump can include a male part that includes an outer diameter; a female part that includes an inner diameter; an elastomeric seal element disposed between the male part and the female part; and a non-elastomeric seal element disposed between the male part and the female part. Various other apparatuses, systems, methods, etc., are also disclosed.
    Type: Application
    Filed: January 26, 2014
    Publication date: July 31, 2014
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Arthur I. Watson, Boyle Suwono, Bernard Kee, Christopher E. Featherby, David Milton Eslinger
  • Publication number: 20140037434
    Abstract: A submersible pump housing with seal bleed ports is provided. In an implementation, a pump housing for electric submersible pumps (ESPs), such as a centrifugal ESP, has end seals that are located inside or further inboard toward the high thrust pressure generated by the pump, than the threaded ends of the pump housing. The inboard seals contain and seal off the pump pressure and spare the threaded regions that are more pressure-vulnerable from the pump's high pressure interior, thereby increasing the pressure rating of the entire housing. Leak ports or bleed ports are provided further outboard of the end seals to relieve fluid seeping from inside the submersible pump housing past each end seal. A plate may be added to direct small amounts of fluid escaping from the end seals away from the wellbore casing in which an ESP is situated.
    Type: Application
    Filed: September 6, 2012
    Publication date: February 6, 2014
    Inventor: David Milton Eslinger
  • Patent number: 8622124
    Abstract: A technique provides an electric submersible pumping system to facilitate a well treatment, such as a hydraulic fracturing well treatment. The electric submersible pumping system is positioned downhole and oriented to intake a fluid delivered downhole for use in the well treatment. Once the fluid is delivered downhole, the electric submersible pumping system pumps, pressurizes and discharges this fluid to perform the well treatment, e.g. the hydraulic fracturing treatment. The pumping system reduces the pressure at which the treatment fluid must be delivered downhole.
    Type: Grant
    Filed: August 20, 2012
    Date of Patent: January 7, 2014
    Assignee: Schlumberger Technology Corporation
    Inventor: David Milton Eslinger
  • Publication number: 20130340245
    Abstract: A system and methodology facilitate connection between components of an electric submersible pumping system. The technique utilizes at least one connector designed to connect a first component to a second component of an electric submersible pumping system. The connector is designed as a flangeless connector which secures engagement of the two components without relative rotation between the first component and the second component. Additional flangeless connectors may be positioned between other pairs of components to provide the enhanced connection throughout the electric submersible pumping system.
    Type: Application
    Filed: May 13, 2013
    Publication date: December 26, 2013
    Applicant: Schlumberger Technology Corporation
    Inventors: Arthur I. Watson, Alejandro Camacho Cardenas, David Milton Eslinger, Christopher E. Featherby, Jason Kobersky
  • Publication number: 20120312531
    Abstract: A technique provides an electric submersible pumping system to facilitate a well treatment, such as a hydraulic fracturing well treatment. The electric submersible pumping system is positioned downhole and oriented to intake a fluid delivered downhole for use in the well treatment. Once the fluid is delivered downhole, the electric submersible pumping system pumps, pressurizes and discharges this fluid to perform the well treatment, e.g. the hydraulic fracturing treatment. The pumping system reduces the pressure at which the treatment fluid must be delivered downhole.
    Type: Application
    Filed: August 20, 2012
    Publication date: December 13, 2012
    Inventor: David Milton Eslinger
  • Patent number: 8261834
    Abstract: A technique provides an electric submersible pumping system to facilitate a well treatment, such as a hydraulic fracturing well treatment. The electric submersible pumping system is positioned downhole and oriented to intake a fluid delivered downhole for use in the well treatment. Once the fluid is delivered downhole, the electric submersible pumping system pumps, pressurizes and discharges this fluid to perform the well treatment, e.g. the hydraulic fracturing treatment. The pumping system reduces the pressure at which the treatment fluid must be delivered downhole.
    Type: Grant
    Filed: April 30, 2007
    Date of Patent: September 11, 2012
    Assignee: Schlumberger Technology Corporation
    Inventor: David Milton Eslinger
  • Patent number: 7874366
    Abstract: To perform a cleanout operation in a wellbore, a cleaning tool having a coiled tubing and an electrical pump assembly is run into the wellbore. The electrical pump assembly that is located in the wellbore is activated. In response to fluid flow generated by the electrical pump assembly, removal of debris from the wellbore is caused by directing fluid containing the debris into the coiled tubing for delivery to an earth surface.
    Type: Grant
    Filed: June 28, 2007
    Date of Patent: January 25, 2011
    Assignee: Schlumberger Technology Corporation
    Inventors: Marc Allcorn, Jing Hayes Chow, David Milton Eslinger, Matthew R. Hackworth, John David Rowatt, Thomas Allan
  • Publication number: 20080264640
    Abstract: A technique provides an electric submersible pumping system to facilitate a well treatment, such as a hydraulic fracturing well treatment. The electric submersible pumping system is positioned downhole and oriented to intake a fluid delivered downhole for use in the well treatment. Once the fluid is delivered downhole, the electric submersible pumping system pumps, pressurizes and discharges this fluid to perform the well treatment, e.g. the hydraulic fracturing treatment. The pumping system reduces the pressure at which the treatment fluid must be delivered downhole.
    Type: Application
    Filed: April 30, 2007
    Publication date: October 30, 2008
    Inventor: David Milton Eslinger
  • Publication number: 20080066920
    Abstract: To perform a cleanout operation in a wellbore, a cleaning tool having a coiled tubing and an electrical pump assembly is run into the wellbore. The electrical pump assembly that is located in the wellbore is activated. In response to fluid flow generated by the electrical pump assembly, removal of debris from the wellbore is caused by directing fluid containing the debris into the coiled tubing for delivery to an earth surface.
    Type: Application
    Filed: June 28, 2007
    Publication date: March 20, 2008
    Inventors: Marc Allcorn, Jing Hayes Chow, David Milton Eslinger, Matthew R. Hackworth, John David Rowatt, Thomas Allan