Patents by Inventor Steven K. Tetzlaff

Steven K. Tetzlaff 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).

  • Patent number: 9885353
    Abstract: A reciprocating well pump assembly has a barrel and a piston reciprocally carried within the barrel between up stroke and down stroke positions. A travelling valve moves with the piston and has a closed position during the up stroke an open position during the down stroke. A relief port extends from a bore of the piston below the travelling valve into the barrel. A valve sleeve mounted around the body of the travelling valve is axially movable between a closed position, closing the tubular body relief port, and an open position, communicating well fluid in the barrel with the well fluid in the bore of the piston. When nearing the top of the stroke, the valve sleeve abuts a stop in the barrel. Continued upward movement of the piston causes the valve sleeve to open the relief port.
    Type: Grant
    Filed: July 7, 2015
    Date of Patent: February 6, 2018
    Assignee: Baker Hughes, a GE Company, LLC
    Inventors: Steven K. Tetzlaff, Lance T. Robinson, Gary L. James
  • Patent number: 9777560
    Abstract: A well fluid submersible pump assembly includes a pump operatively coupled to a motor and a seal section located between the motor and the pump. The seal section has a single piece tubular housing with adapters secured to opposite ends of the housing. A shaft extends axially through the housing for driving the pump. An auxiliary seal carrier located in the housing has a central bore through which the shaft extends and has an outer diameter portion that seals to the bore of the housing. Opposed check valves in the seal carrier allow lubricant to flow from one side of the auxiliary carrier to an opposite side of the seal carrier in response to a selected pressure differential. A mechanical face seal mounts to the auxiliary seal carrier and seals around the shaft.
    Type: Grant
    Filed: November 20, 2014
    Date of Patent: October 3, 2017
    Assignee: Baker Hughes Incorporated
    Inventors: Steven K. Tetzlaff, Lance T. Robinson, Kevin R. Bierig, Daniel A. Shaffer
  • Patent number: 9726166
    Abstract: A well pump includes a plunger reciprocally carried within a barrel between up stroke and down stroke positions. A tubular linear actuator housing located below the barrel has a rotatable rotor. An array of rotor magnets is mounted to the rotor, directing rotor magnetic fields in an outward direction. A cage is fixed against rotation relative to the housing and carried within the housing for axial movement relative to the rotor and the housing. The cage has a cylindrical inner sidewall surrounding the outer sidewall of the rotor. An array of cage magnets is mounted to the inner sidewall of the cage. The cage magnets direct cage magnetic fields in an inward direction relative to the axis. The cage and rotor magnetic fields interact such rotation of the rotor causes axial movement of the cage. A motor rotates the rotor.
    Type: Grant
    Filed: December 10, 2014
    Date of Patent: August 8, 2017
    Assignee: Baker Hughes Incorporated
    Inventors: Steven K. Tetzlaff, Peter F. Lawson, Kevin R. Bierig, Lance T. Robinson, Sean A. Cain
  • Publication number: 20160169215
    Abstract: A well pump includes a plunger reciprocally carried within a barrel between up stroke and down stroke positions. A tubular linear actuator housing located below the barrel has a rotatable rotor. An array of rotor magnets is mounted to the rotor, directing rotor magnetic fields in an outward direction. A cage is fixed against rotation relative to the housing and carried within the housing for axial movement relative to the rotor and the housing. The cage has a cylindrical inner sidewall surrounding the outer sidewall of the rotor. An array of cage magnets is mounted to the inner sidewall of the cage. The cage magnets direct cage magnetic fields in an inward direction relative to the axis. The cage and rotor magnetic fields interact such rotation of the rotor causes axial movement of the cage. A motor rotates the rotor.
    Type: Application
    Filed: December 10, 2014
    Publication date: June 16, 2016
    Inventors: Steven K. Tetzlaff, Peter F. Lawson, Kevin R. Bierig, Lance T. Robinson, Sean A. Cain
  • Patent number: 9353752
    Abstract: An electrical submersible pump assembly includes a centrifugal pump having impellers and diffusers. A thrust runner is coupled to a motor shaft for rotation along with the impellers. The runner receives thrust from at least one of the impellers and transfers the thrust to a bushing non rotatably mounted in one of the diffusers. The bushing has a thrust transferring end adjacent a thrust receiving shoulder in the diffuser. The bushing is axially movable in the receptacle. An annular spring located between the thrust receiving shoulder in the receptacle and the thrust transferring end of the bushing urges the bushing away from the thrust receiving shoulder.
    Type: Grant
    Filed: July 19, 2013
    Date of Patent: May 31, 2016
    Assignee: Baker Hughes Incorporated
    Inventors: Steven K. Tetzlaff, Dan L. Adams, Dewayne May
  • Publication number: 20160145984
    Abstract: A well fluid submersible pump assembly includes a pump operatively coupled to a motor and a seal section located between the motor and the pump. The seal section has a single piece tubular housing with adapters secured to opposite ends of the housing. A shaft extends axially through the housing for driving the pump. An auxiliary seal carrier located in the housing has a central bore through which the shaft extends and has an outer diameter portion that seals to the bore of the housing. Opposed check valves in the seal carrier allow lubricant to flow from one side of the auxiliary carrier to an opposite side of the seal carrier in response to a selected pressure differential. A mechanical face seal mounts to the auxiliary seal carrier and seals around the shaft.
    Type: Application
    Filed: November 20, 2014
    Publication date: May 26, 2016
    Inventors: Steven K. Tetzlaff, Lance T. Robinson, Kevin R. Bierig, Daniel A. Shaffer
  • Publication number: 20160010640
    Abstract: A reciprocating well pump assembly has a barrel and a piston reciprocally carried within the barrel between up stroke and down stroke positions. A travelling valve moves with the piston and has a closed position during the up stroke an open position during the down stroke. A relief port extends from a bore of the piston below the travelling valve into the barrel. A valve sleeve mounted around the body of the travelling valve is axially movable between a closed position, closing the tubular body relief port, and an open position, communicating well fluid in the barrel with the well fluid in the bore of the piston. When nearing the top of the stroke, the valve sleeve abuts a stop in the barrel. Continued upward movement of the piston causes the valve sleeve to open the relief port.
    Type: Application
    Filed: July 7, 2015
    Publication date: January 14, 2016
    Inventors: Steven K. Tetzlaff, Lance T. Robinson, Gary L. James
  • Patent number: 9080436
    Abstract: An electrical submersible pumping (ESP) system for use in a wellbore that can be assembled in the wellbore. Upper and lower pump tandems are fitted with connectors that align the tandems when coupled in the wellbore. The connectors on the lower tandems have bores with enlarged openings on upward facing surfaces. Downward pointing pins are on lower facing surfaces of the connectors on the upper tandems. The cross sectional area of each bore decreases with distance away from the openings, so that as the pins insert into the bores the pins move along a helical path that in turn rotates the upper tandem into a designated azimuth and into alignment with the lower tandem. Properly aligning the upper and lower tandems couples respective drive and driven shafts in the tandems as the upper tandem lands on the lower tandem.
    Type: Grant
    Filed: November 16, 2011
    Date of Patent: July 14, 2015
    Assignee: Baker Hughes Incorporated
    Inventors: Steven K. Tetzlaff, Lance Robinson
  • Patent number: 8985972
    Abstract: An electric motor of an electric submersible pump is electrically isolated from a power conduit for diagnostic testing of the power conduit and wet connection components in place within a wellbore. The electric motor is electrically connected to the power conduit through a wet connection assembly having motor leads in electrical connection with a transfer contact and a receptacle assembly disposed on a tubing string having a supply contact electrically connected to the power conduit. Electric power flows through the power conduit, through the supply contact, through the transfer contact, and through the motor leads to the motor. The supply contact and the transfer contact are separated by a sliding sleeve that hydraulically inserts between the contacts, insulating the transfer contact and grounding the supply contact for testing. The contacts may also be separated by a relative rotation of the assemblies that grounds the supply contact for testing.
    Type: Grant
    Filed: November 7, 2011
    Date of Patent: March 24, 2015
    Assignee: Baker Hughes Incorporated
    Inventors: Steven K. Tetzlaff, John Bearden, Ken Bebak, William H. Milne
  • Publication number: 20150027728
    Abstract: An ESP assembly is broken into subassemblies to fit through a lubricator for live well deployment. A lifting device has a shaft transmission feature and associated housing rotational lock for use at the top of the first subassembly and to be left in position for engagement of the next assembly. The subassemblies can be delivered on wireline or slickline. A wet connect can be at the lower end of the initial subassembly to connect to a cable run alongside the production tubing. The ESP subassemblies all are interconnected in the live well and function as they would if assembled at the surface. The ability to break down the assembly and run it in segments lets the components fit through a length limited lubricator for live well deployment.
    Type: Application
    Filed: July 26, 2013
    Publication date: January 29, 2015
    Applicant: Baker Hughes Incorporated
    Inventors: Steven K. Tetzlaff, Dan L. Adams, Dewayne May, Walter R. Dinkins, Steven W. Pyron
  • Publication number: 20150023815
    Abstract: An electrical submersible pump assembly includes a centrifugal pump having impellers and diffusers. A thrust runner is coupled to a motor shaft for rotation along with the impellers. The runner receives thrust from at least one of the impellers and transfers the thrust to a bushing non rotatably mounted in one of the diffusers. The bushing has a thrust transferring end adjacent a thrust receiving shoulder in the diffuser. The bushing is axially movable in the receptacle. An annular spring located between the thrust receiving shoulder in the receptacle and the thrust transferring end of the bushing urges the bushing away from the thrust receiving shoulder.
    Type: Application
    Filed: July 19, 2013
    Publication date: January 22, 2015
    Inventors: Steven K. Tetzlaff, Dan L. Adams, Dewayne May
  • Patent number: 8844636
    Abstract: A well conveyance system couples to an uphole end of an artificial lift system and operates to push the artificial lift system through a tubing string for deployment in a wellbore. The well conveyance system includes a wellbore tractor adapted to push the artificial lift system through the tubing string and a swab cup assembly having a swab cup and a perforated nipple extending therethrough. The perforated nipple includes a nipple passage allowing for fluid flow from an area downhole from the swab cup to an area uphole from the swab cup when the wellbore tractor operates. A valve selectively blocks the perforated nipple to permit a hydraulic pressure to be applied to the tubing string uphole of the swab cup, exerting a downhole force on the swab cup to aid in deployment of the artificial lift system.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: September 30, 2014
    Assignee: Baker Hughes Incorporated
    Inventors: Kenneth T. Bebak, Steven K. Tetzlaff
  • Patent number: 8845308
    Abstract: A thrust module and a seal module for use in an electric submersible pump assembly is provided. The thrust module provides increased lubrication and heat dissipation while increasing sealing redundancies within the module. The thrust module includes a thrust bearing that absorbs thrust from the primary pump. A circulation pump assembly is coupled to the thrust bearing to circulate fluid through the thrust bearing and dissipate heat generated in the thrust bearing through a plurality of fins formed on an exterior surface of the circulation pump assembly. The seal module has labyrinth discs positioned within the seal module that inhibit fluid flow through the seal module. The seal module also includes check valves that release fluid from and allow fluid into the seal module at predetermined pressures. The sealing assembly is interposed between the thrust bearing and a primary pump of the electric submersible pump.
    Type: Grant
    Filed: April 14, 2011
    Date of Patent: September 30, 2014
    Assignee: Baker Hughes Incorporated
    Inventors: Steven K. Tetzlaff, Chad A. Craig
  • Patent number: 8830471
    Abstract: A seal section for use in a wellbore electrical submersible pump and includes an optic fiber detection arrangement wherein one or more optic fiber sensors is used to detect an operational parameter associated with the seal section. The operational parameters can include temperature, vibration and pressure.
    Type: Grant
    Filed: August 20, 2013
    Date of Patent: September 9, 2014
    Assignee: Baker Hughes Incorporated
    Inventors: Brown Lyle Wilson, Earl Bruce Brookbank, Ketankumar K. Sheth, Suresha R. O'Bryan, Steven K. Tetzlaff, Risa Rutter
  • Patent number: 8821137
    Abstract: Systems and methods for employing gauge packages for use with a wet-connect ESPs. In one embodiment, a modular gauge package includes a body, a gauge electronics assembly housed within the body, and a pair of electrical connectors at the upper and lower ends of the body, where power is passed through the body from one connector to the other. The electrical connector at the top of the body engages a complementary electrical connector on the bottom of a pump motor. The electrical connector at the bottom of the body engages a complementary electrical connector at the end of a production conduit. The connector at the bottom of the body may be identically configured with the connector at the bottom of the pump motor, and the connector at the top of the body may be identically configured with the connector at the end of the production conduit.
    Type: Grant
    Filed: June 22, 2011
    Date of Patent: September 2, 2014
    Assignee: Baker Hughes Incorporated
    Inventors: Steven K. Tetzlaff, Ken Bebak, Robert H. McCoy, Lance T. Robinson
  • Publication number: 20140168638
    Abstract: A seal section for use in a wellbore electrical submersible pump and includes an optic fiber detection arrangement wherein one or more optic fiber sensors is used to detect an operational parameter associated with the seal section. The operational parameters can include temperature, vibration and pressure.
    Type: Application
    Filed: August 20, 2013
    Publication date: June 19, 2014
    Inventors: Brown Lyle Wilson, Earl Bruce Brookbank, Ketankumar K. Sheth, Suresha R. O'Bryan, Steven K. Tetzlaff, Risa Rutter
  • Patent number: 8708675
    Abstract: Systems and methods of cooling a motor of an electrical submersible pump (ESP) assembly employed in an electrical submersible subsea booster pumping system, are provided. A supporting frame structure such as an ESP mounting skid or top end assembly of a caisson having structural members exposed to environmental seawater, is modified or designed to include fluid conduits within the structural members to establish lubricant pathways for lubricant to flow. A heated/hot lubricant line connects between a supporting structure lubricant inlet port and an ESP motor lubricant outlet port. A cooled lubricant line connects between a supporting structure lubricant outlet port and an ESP motor lubricant inlet port. A pump or other fluid moving device circulates lubricant from the ESP motor to the lubricant pathways within the supporting frame structure, whereby the seawater cools the lubricant contained therein, which is then circulated back into the motor to assisting cooling the motor.
    Type: Grant
    Filed: June 17, 2011
    Date of Patent: April 29, 2014
    Assignee: Baker Hughes Incorporated
    Inventors: Ignacio Martinez, Donn J. Brown, John J. Mack, Steven K. Tetzlaff, Dan A. Merrill
  • Patent number: 8651837
    Abstract: An electrical submersible pumping (ESP) system for use in a wellbore having a pressure equalization system that employs modules with a bellows. The bellows axially expands and contracts in response to pressure fluctuations encountered in the wellbore. The modules are attachable in series on a lower end of a motor of the ESP to form the string, where the string can range from a single module to a multiplicity of modules, depending on the application. The bellows has a conduit axially inserted through the bellows that includes an umbilical and has an end in pressure communication with the motor.
    Type: Grant
    Filed: May 3, 2011
    Date of Patent: February 18, 2014
    Assignee: Baker Hughes Incorporated
    Inventor: Steven K. Tetzlaff
  • Publication number: 20130180730
    Abstract: A well conveyance system couples to an uphole end of an artificial lift system and operates to push the artificial lift system through a tubing string for deployment in a wellbore. The well conveyance system includes a wellbore tractor adapted to push the artificial lift system through the tubing string and a swab cup assembly having a swab cup and a perforated nipple extending therethrough. The perforated nipple includes a nipple passage allowing for fluid flow from an area downhole from the swab cup to an area uphole from the swab cup when the wellbore tractor operates. A valve selectively blocks the perforated nipple to permit a hydraulic pressure to be applied to the tubing string uphole of the swab cup, exerting a downhole force on the swab cup to aid in deployment of the artificial lift system.
    Type: Application
    Filed: January 18, 2012
    Publication date: July 18, 2013
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Kenneth T. Bebak, Steven K. Tetzlaff
  • Patent number: 8439119
    Abstract: A latching mechanism for selectively disengaging an upper pump from a motor in an ESP. The latching mechanism comprises barbs formed on an upper end of an upper shaft that are engaged by a tool to lift the upper shaft until a lower end of the upper shaft disengages from an upper end of a motor shaft. When the upper pump is disengaged from the motor shaft, only a lower pump is driven by the motor and flow of well fluid is circulated past the disengaged upper pump via a bypass line. The upper pump shaft may reengage the motor shaft if additional lift is required.
    Type: Grant
    Filed: August 6, 2010
    Date of Patent: May 14, 2013
    Assignee: Baker Hughes Incorporated
    Inventors: Ketankumar K. Sheth, Steven K. Tetzlaff