Patents by Inventor Todor K. Sheiretov

Todor K. Sheiretov 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: 20220389784
    Abstract: An electric bonnet includes a housing; a guide piston disposed in the housing; an electric motor having a motor shaft; a rear housing connected to the housing; a gearbox assembly disposed in the rear housing, the gearbox assembly being coupled to the motor shaft of the electric motor; and a roller screw assembly disposed in the rear housing. A first end of the roller screw assembly is connected to the gearbox assembly, and a second end of the roller screw assembly is connected to the guide piston. Rotation of the motor shaft of the electric motor transmits rotary motion to the gearbox assembly, which transforms the rotary motion into linear motion using the roller screw assembly. The linear motion of the roller screw assembly actuates the guide piston.
    Type: Application
    Filed: June 2, 2022
    Publication date: December 8, 2022
    Inventors: Suman Katanguri, Todor K. Sheiretov, Bruce Boulanger
  • Patent number: 11021920
    Abstract: A downhole tool that has a plurality of arm assemblies. Each of the arm assemblies has an arm configured to expand and retract and an actuator. A hydraulic bus in fluid communication with the plurality of arm assemblies. A plurality of flow control devices. The flow control devices are configured to selectively isolate one or more arm assemblies of the plurality of arm assemblies from the hydraulic bus while maintaining the other arm assemblies of the plurality of arm assemblies in communication with the hydraulic bus.
    Type: Grant
    Filed: May 29, 2019
    Date of Patent: June 1, 2021
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Pierre-arnaud Foucher, Todor K. Sheiretov, Gregory J. Giem, Lucas Teurlay, Quentin Smith
  • Publication number: 20200256144
    Abstract: A technique facilitates intervention operations in many types of wells including horizontal, multi-zone wells. According to an embodiment, a completion is deployed in a borehole, e.g. a deviated wellbore. The completion comprises a side pocket mandrel having a docking station. In some embodiments, the completion may comprise a plurality of the side pocket mandrels A device, such as an electrically powered device, is removably deployed in the docking station. When the docking station receives the electrically powered device, an inductive coupler or other suitable electric coupler may be used to provide power to the electrically powered device while deployed in the docking station. The electrically powered device also is configured for engagement with a tool which enables an intervention operation by simply removing and replacing the device via the tool.
    Type: Application
    Filed: November 1, 2018
    Publication date: August 13, 2020
    Inventors: Benoit Deville, John Whitsitt, Todor K. Sheiretov, Stephen Dyer
  • Publication number: 20190277102
    Abstract: A downhole tool that has a plurality of arm assemblies. Each of the arm assemblies has an arm configured to expand and retract and an actuator. A hydraulic bus in fluid communication with the plurality of arm assemblies. A plurality of flow control devices. The flow control devices are configured to selectively isolate one or more arm assemblies of the plurality of arm assemblies from the hydraulic bus while maintaining the other arm assemblies of the plurality of arm assemblies in communication with the hydraulic bus.
    Type: Application
    Filed: May 29, 2019
    Publication date: September 12, 2019
    Inventors: Pierre-arnaud Foucher, Todor K. Sheiretov, Gregory J. Giem, Lucas Teurlay, Quentin Smith
  • Publication number: 20180100363
    Abstract: A downhole tool that has a plurality of arm assemblies. Each of the arm assemblies has an arm configured to expand and retract and an actuator. A hydraulic bus in fluid communication with the plurality of arm assemblies. A plurality of flow control devices. The flow control devices are configured to selectively isolate one or more arm assemblies of the plurality of arm assemblies from the hydraulic bus while maintaining the other arm assemblies of the plurality of arm assemblies in communication with the hydraulic bus.
    Type: Application
    Filed: December 13, 2017
    Publication date: April 12, 2018
    Inventors: Pierre-arnaud Foucher, Todor K. Sheiretov, Gregory J. Giem, Lucas Teurlay, Quentin Smith
  • Patent number: 9850724
    Abstract: A downhole tool that has a plurality of arm assemblies. Each of the arm assemblies has an arm configured to expand and retract and an actuator. A hydraulic bus in fluid communication with the plurality of arm assemblies. A plurality of flow control devices. The flow control devices are configured to selectively isolate one or more arm assemblies of the plurality of arm assemblies from the hydraulic bus while maintaining the other arm assemblies of the plurality of arm assemblies in communication with the hydraulic bus.
    Type: Grant
    Filed: April 2, 2015
    Date of Patent: December 26, 2017
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Pierre-Arnaud Foucher, Todor K. Sheiretov, Gregory J. Giem, Lucas Teurlay, Quentin Smith
  • Patent number: 9685891
    Abstract: Systems and methods for driving a plurality of permanent magnet synchronous motors are provided. An embodiment of the system can include a first permanent magnet synchronous motor coupled to a first slip coupling, a second permanent magnet synchronous motor coupled to a second slip coupling, and the first permanent magnet synchronous motor and the second permanent magnet synchronous motor can be electrically connected in parallel on a bus.
    Type: Grant
    Filed: March 17, 2015
    Date of Patent: June 20, 2017
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Rodrigo Feliu, Maxim Alekseevich Klyuzhev, Todor K. Sheiretov, Pierre-Arnaud Foucher, Xuedong Yang
  • Publication number: 20170145760
    Abstract: A method for conveying an interventional tool downhole in a substantially self-piloting fashion. The method includes moving the tool in the well while using a communicative conveyance line coupled to a winch at the oilfield surface. Thus, real-time readings regarding downhole tool speed, line tension, etc. may be analyzed at surface and utilized to adjust the moving of the tool in an ongoing feedback loop. As a result, the adjustments are made based on true circumstances downhole as opposed to surface-based readings which may otherwise be less accurate. Therefore, efficiency of the operations may be maximized, operator time freed and the likelihood of catastrophic line based failures reduced.
    Type: Application
    Filed: June 27, 2014
    Publication date: May 25, 2017
    Inventors: Jean-Pierre Poyet, Todor K. Sheiretov, Vincent Chatelet, Pierre-Arnaud Foucher, Fabio Cecconi, Amir Hermes
  • Publication number: 20160290047
    Abstract: A downhole tool that has a plurality of arm assemblies. Each of the arm assemblies has an arm configured to expand and retract and an actuator. A hydraulic bus in fluid communication with the plurality of arm assemblies. A plurality of flow control devices. The flow control devices are configured to selectively isolate one or more arm assemblies of the plurality of arm assemblies from the hydraulic bus while maintaining the other arm assemblies of the plurality of arm assemblies in communication with the hydraulic bus.
    Type: Application
    Filed: April 2, 2015
    Publication date: October 6, 2016
    Inventors: Pierre-Arnaud Foucher, Todor K. Sheiretov, Gregory J. Giem, Lucas Teurlay, Quentin Smith
  • Publication number: 20160237812
    Abstract: A system for delivering a fiber optic slickline through a deviated well with a battery powered tractor. The system includes a tractor having an efficiency rating of at least about 30% so as to adequately serve as a conveyance aid without the requirement of surface supplied power. For example, regulating of drive sections of the tractor may take place through a hydraulic section. Thus, arms of the tractor may be hydraulically locked in an open position without the requirement of continuous power to maintain the arms in an open position. At the same time, however, the hydraulic section may include accumulator capacity so as to allow for temporary responsive collapse of the arms for sake of navigating a restriction in the well.
    Type: Application
    Filed: September 30, 2013
    Publication date: August 18, 2016
    Inventors: Pierre-Arnaud Foucher, Matthew Billingham, Todor K. Sheiretov
  • Publication number: 20150270759
    Abstract: Systems and methods for driving a plurality of permanent magnet synchronous motors are provided. An embodiment of the system can include a first permanent magnet synchronous motor coupled to a first slip coupling, a second permanent magnet synchronous motor coupled to a second slip coupling, and the first permanent magnet synchronous motor and the second permanent magnet synchronous motor can be electrically connected in parallel on a bus.
    Type: Application
    Filed: March 17, 2015
    Publication date: September 24, 2015
    Inventors: Rodrigo Feliu, Maxim Alekseevich Klyuzhev, Todor K. Sheiretov, Pierre-Arnaud Foucher, Xuedong Yang
  • Publication number: 20140318867
    Abstract: A downhole tractor assembly that is configured for open-hole applications and of a self-aligning nature. The self-aligning nature of the assembly is effectuated through a tractor portion which is rotable about an axis of an elongated body of the assembly independent of a separate centralizing portion of the assembly. That is, the tractor portion, configured for interfacing an open-hole well wall of potentially irregular morphology, is independently rotable so as to maintain a position of substantially optimized driving friction at the interface during tractoring. Maintenance of optimized driving friction in this manner may occur irrespective of the orientation of the centralizing portion of the assembly.
    Type: Application
    Filed: July 7, 2014
    Publication date: October 30, 2014
    Inventors: Franz Aguirre, Todor K. Sheiretov, Keith R. Nelson
  • Patent number: 8770303
    Abstract: A downhole tractor assembly that is configured for open-hole applications and of a self-aligning nature. The self-aligning nature of the assembly is effectuated through a tractor portion which is rotable about an axis of an elongated body of the assembly independent of a separate centralizing portion of the assembly. That is, the tractor portion, configured for interfacing an open-hole well wall of potentially irregular morphology, is independently rotable so as to maintain a position of substantially optimized driving friction at the interface during tractoring. Maintenance of optimized driving friction in this manner may occur irrespective of the orientation of the centralizing portion of the assembly.
    Type: Grant
    Filed: November 7, 2007
    Date of Patent: July 8, 2014
    Assignee: Schlumberger Technology Corporation
    Inventors: Franz Aguirre, Todor K. Sheiretov, Keith R. Nelson
  • Patent number: 7905282
    Abstract: A pipe conveyed well logging assembly is provided that includes a pipe string; a carrier assembly connected to the pipe string; and a memory logging tool carried by the carrier assembly and movable from a removably latched retracted position, protected within the carrier assembly, to a removably latched extended position, at least partially protruding from a lower end of the carrier assembly.
    Type: Grant
    Filed: February 9, 2009
    Date of Patent: March 15, 2011
    Assignee: Schlumberger Technology Corporation
    Inventors: Harold Steven Bissonnette, Todor K Sheiretov, Christopher S Del Campo, Matthew McCoy
  • Patent number: 7896074
    Abstract: A pipe conveyed well logging assembly is provided that includes a pipe string; a carrier assembly connected to the pipe string and having an inner housing and an outer housing; and a memory logging tool carried by the carrier assembly and movable from a retracted position, protected within the inner housing; and an extended position, at least partially protruding from a lower end of the carrier assembly.
    Type: Grant
    Filed: February 9, 2009
    Date of Patent: March 1, 2011
    Assignee: Schlumberger Technology Corporation
    Inventors: Harold Steven Bissonnette, Todor K Sheiretov, Christopher S Del Campo, Matthew McCoy
  • Patent number: 7874359
    Abstract: A method of performing a pipe conveyed well logging operation is provided that includes providing a pipe conveyed well logging assembly having a pipe string, a memory logging tool and a memory module; deploying the assembly into a wellbore; operating the memory logging tool to perform a logging operation to obtain logging data from the wellbore; and retrieving the obtained logging data prior to withdrawing the pipe string from the wellbore.
    Type: Grant
    Filed: February 9, 2009
    Date of Patent: January 25, 2011
    Assignee: Schlumberger Technology Corporation
    Inventors: Harold Steven Bissonnette, Todor K Sheiretov, Christopher S Del Campo, Matthew McCoy
  • Patent number: 7854258
    Abstract: A downhole tool is provided that includes a grip assembly for contacting a well formation. The grip assembly includes a gripper body; and a centralizer that is attached to and radially expandable with respect to the gripper body and that has a geometry which is lockable by a locking device. The grip assembly also includes a force amplifier in force transmitting relation with the centralizer, wherein the force amplifier transfers a force in a first direction to a much larger force in a second direction when the centralizer is locked by the locking device.
    Type: Grant
    Filed: March 3, 2009
    Date of Patent: December 21, 2010
    Assignee: Schlumberger Technology Corporation
    Inventors: Todor K. Sheiretov, Dwight C. Chilcoat, Robin A. Ewan, Carl J Roy, Matthew Billingham, Franz Aguirre
  • Patent number: 7661475
    Abstract: A well logging instrument deployment device includes a housing configured to be coupled to a pipe string. A carrier sub is disposed inside the housing and configured to move longitudinally inside the housing. At least one well logging instrument is coupled to the carrier sub. A latch is configured to retain the well logging instrument and carrier sub in a first longitudinal position along the housing such that the well logging instrument is disposed entirely inside the housing. The latch is configured to retain the well logging instrument and carrier in a second position such that at least a portion of the well logging instrument extends outwardly from the housing.
    Type: Grant
    Filed: May 24, 2007
    Date of Patent: February 16, 2010
    Assignee: Schlumberger Technology Corporation
    Inventors: Todor K. Sheiretov, Matthew McCoy, Chris Del Campo
  • Patent number: 7661477
    Abstract: An unsticking assembly for releasing a tool that is stuck in a wellbore including a first anchor actuatable between an engaging position wherein the first anchor engages a wall of the wellbore and a retracted position wherein the first anchor does not engage the wall; a second anchor actuatable between an engaging position wherein the second anchor engages a wall of the wellbore and a retracted position wherein the second anchor does not engage the wall; and a control module in connection with the first and second anchor to selectively actuate each anchor between the engaged and retracted positions. The assembly is adapted for positioning in the wellbore and in connection with the tool when the tool is stuck in the wellbore. The assembly may be a stand-alone assembly that is connectable to the tool after the tool is stuck in the wellbore. The assembly may include the wellbore tool as an interconnected element.
    Type: Grant
    Filed: March 31, 2006
    Date of Patent: February 16, 2010
    Assignee: Schlumberger Technology Corporation
    Inventors: Todor K. Sheiretov, Matthew Billingham, Wayne Fulin
  • Publication number: 20090194270
    Abstract: A pipe conveyed well logging assembly is provided that includes a pipe string; a carrier assembly connected to the pipe string; and a memory logging tool carried by the carrier assembly and movable from a removably latched retracted position, protected within the carrier assembly, to a removably latched extended position, at least partially protruding from a lower end of the carrier assembly.
    Type: Application
    Filed: February 9, 2009
    Publication date: August 6, 2009
    Inventors: Harold Steven Bissonnette, Todor K. Sheiretov, Christopher S. Del Campo, Matthew McCoy