Patents by Inventor Gilbert R. Martinez

Gilbert R. Martinez 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: 7787525
    Abstract: A wireline telemetry system and method of transmitting data on multiple carrier frequencies. The system and method adjust power level and number of bits-per-carrier to optimally or near-optimally utilize the capacity of the wireline cable. Due to the nature of wireline telemetry the overall power level is restricted only by the output capability of the downhole telemetry cartridge and the input power restrictions of the uphole telemetry unit receiver. The optimal power level is determined during a training sequence and is a function of such factors as cable length, cable material, cable temperature and cable geometry. The uplink and downlink transmission are executed using different modulation techniques.
    Type: Grant
    Filed: December 24, 1999
    Date of Patent: August 31, 2010
    Assignee: Schlumberger Technology Corporation
    Inventors: Lloyd D. Clark, Jr., Joseph M. Steiner, Jr., Suzanne D. Richardson, Ramon Hernandez-Marti, Terry L. Mayhugh, Bart J. Bombay, John A. Booker, Gilbert R. Martinez
  • Patent number: 7009312
    Abstract: A method and system for providing power to a wireline logging system includes a rectifier section operable to receive an AC input signal and generate a first DC power signal as an output. A converter section cascadedly coupled to the rectifier section converts the first DC power signal to a second DC power signal. An inverter section cascadedly coupled to the converter section is operable to generate an output power signal providing power to a system in response to receiving the second DC power signal. A control section is coupled to the rectifier section, the converter section, the inverter section and a communications link. The communications link is operable to receive information describing waveforms for the output power signal. The control section is operable to receive the information and control a corresponding section to generate the waveforms in response to receiving the information.
    Type: Grant
    Filed: March 25, 2004
    Date of Patent: March 7, 2006
    Assignee: Schlumberger Technology Corporation
    Inventors: Ramon Hernandez-Marti, Gilbert R. Martinez, Terry L. Mayhugh