Patents by Inventor Francisco Kazuo Kobata

Francisco Kazuo Kobata 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: 9091604
    Abstract: A dynamometer measures applied weight and torque at a running tool location and transmits the measured information to a drilling rig operator. The system includes a dynamometer stem having a bidirectional torque and weight sensor coupled inline to the drill string, and further coupled to the running tool, so that the dynamometer stem will measure an applied torque and weight at the running tool and produce a signal in response. The dynamometer stem communicatively couples to a receptor stem, so that the receptor stem may receive the signal from the dynamometer stem. The receptor stem couples inline to the drill string at a rotary table of the drilling rig, and further communicatively couples to a display located proximate to an operator of the drilling rig, so that the receptor stem may transmit the signal to the display. The display presents the signal in real time to the operator.
    Type: Grant
    Filed: March 3, 2011
    Date of Patent: July 28, 2015
    Assignee: Vetco Gray Inc.
    Inventors: Francisco Kazuo Kobata, Lucas Antonio Perrucci, Rafael Romeiro Aymone, Pedro Paulo Alfano
  • Patent number: 8672040
    Abstract: A running tool generates signals in response to setting of a subsea wellhead device that correspond to actual rotation and displacement of the running tool in the subsea wellhead. The running tool includes an encoder that generates a signal corresponding to the number of rotations of a stem of the running tool relative to a body of the running tool. The running tool also includes an axial displacement sensor that generates a signal corresponding to the axial displacement of a piston of the running tool relative to the body. The signals are communicated to the surface using an acoustic transmitter located on the running tool and an acoustic receptor located proximate to a drilling platform at the surface. The signals are communicated to an operator interface device from the receptor for further communication in a manner understood by an operator.
    Type: Grant
    Filed: October 27, 2011
    Date of Patent: March 18, 2014
    Assignee: Vetco Gray Inc.
    Inventors: Francisco Kazuo Kobata, Lucas Antonio Perrucci, Rafael Romeiro Aymone, Pedro Paulo Alfano, Saulo Labaki Agostinho
  • Patent number: 8640777
    Abstract: A bridging hanger with an expandable anchoring mechanism lands on a casing hanger in a subsea wellhead and actuates to anchor to the casing hanger. The anchoring mechanism includes a tubular main body, and a tubular sealing sleeve. The tubular sealing sleeve is coaxial with and mounted on an exterior diameter portion of the tubular main body. The body is moveable from an upper run-in position to a lower set position relative to the sealing sleeve. The anchoring mechanism also includes a first and second locking ring, both carried by the sealing sleeve. The first locking ring engages a profile within an interior of the casing hanger in response to movement of the main body from the run-in to the set position. The second locking ring locks the tubular main body in the set position in response to movement of the main body from the run-in to the set position.
    Type: Grant
    Filed: May 17, 2011
    Date of Patent: February 4, 2014
    Assignee: Vetco Gray Inc.
    Inventors: Francisco Kazuo Kobata, Lucas Antonio Perrucci, Deivis Alves Verdan
  • Publication number: 20130105170
    Abstract: A running tool generates signals in response to setting of a subsea wellhead device that correspond to actual rotation and displacement of the running tool in the subsea wellhead. The running tool includes an encoder that generates a signal corresponding to the number of rotations of a stem of the running tool relative to a body of the running tool. The running tool also includes an axial displacement sensor that generates a signal corresponding to the axial displacement of a piston of the running tool relative to the body. The signals are communicated to the surface using an acoustic transmitter located on the running tool and an acoustic receptor located proximate to a drilling platform at the surface. The signals are communicated to an operator interface device from the receptor for further communication in a manner understood by an operator.
    Type: Application
    Filed: October 27, 2011
    Publication date: May 2, 2013
    Applicant: Vetco Gray Inc.
    Inventors: Francisco Kazuo Kobata, Lucas Antonio Perrucci, Rafael Romeiro Aymone, Pedro Paulo Alfano, Saulo Labaki Agostinho
  • Publication number: 20120223839
    Abstract: A dynamometer measures applied weight and torque at a running tool location and transmits the measured information to a drilling rig operator. The system includes a dynamometer stem having a bidirectional torque and weight sensor coupled inline to the drill string, and further coupled to the running tool, so that the dynamometer stem will measure an applied torque and weight at the running tool and produce a signal in response. The dynamometer stem communicatively couples to a receptor stem, so that the receptor stem may receive the signal from the dynamometer stem. The receptor stem couples inline to the drill string at a rotary table of the drilling rig, and further communicatively couples to a display located proximate to an operator of the drilling rig, so that the receptor stem may transmit the signal to the display. The display presents the signal in real time to the operator.
    Type: Application
    Filed: March 3, 2011
    Publication date: September 6, 2012
    Applicant: Vetco Gray Inc.
    Inventors: Francisco Kazuo Kobata, Lucas Antonio Perrucci, Rafael Romeiro Aymone, Pedro Paulo Alfano
  • Publication number: 20120097399
    Abstract: A bridging hanger with an expandable anchoring mechanism lands on a casing hanger in a subsea wellhead and actuates to anchor to the casing hanger. The anchoring mechanism includes a tubular main body, and a tubular sealing sleeve. The tubular sealing sleeve is coaxial with and mounted on an exterior diameter portion of the tubular main body. The body is moveable from an upper run-in position to a lower set position relative to the sealing sleeve. The anchoring mechanism also includes a first and second locking ring, both carried by the sealing sleeve. The first locking ring engages a profile within an interior of the casing hanger in response to movement of the main body from the run-in to the set position. The second locking ring locks the tubular main body in the set position in response to movement of the main body from the run-in to the set position.
    Type: Application
    Filed: May 17, 2011
    Publication date: April 26, 2012
    Applicant: VETCO GRAY INC.
    Inventors: Francisco Kazuo Kobata, Lucas Antonio Perrucci, Deivis Alves Verdan