Patents by Inventor Edgar A. ESTRADA

Edgar A. ESTRADA 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).

  • Downhole drilling motor
    Patent number: 10174556
    Abstract: A downhole drilling motor comprises a housing located in a drill string. A power sleeve is located inside the housing and is operatively coupled to a drill bit. The power sleeve has a spiral lobed, elastomer covered internal surface. The power sleeve is rotatable with respect to the outer housing. A lobed shaft is located within the power sleeve. The lobed shaft has a spiral lobed outer surface. An anchoring assembly is engaged between the lobed shaft and the outer housing to limit rotation of the lobed shaft with respect to the housing such that a fluid flow through the downhole drilling motor causes the power sleeve to rotate with respect, to the outer housing and the lobed shaft.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: January 8, 2019
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Alben D'Silva, Edgar A. Estrada
  • DOWNHOLE DRILLING MOTOR
    Publication number: 20160194916
    Abstract: A downhole drilling motor comprises a housing located in a drill string. A power sleeve is located inside the housing and is operatively coupled to a drill bit. The power sleeve has a spiral lobed, elastomer covered internal surface. The power sleeve is rotatable with respect to the outer housing. A lobed shaft is located within the power sleeve. The lobed shaft has a spiral lobed outer surface. An anchoring assembly is engaged between the lobed shaft and the outer housing to limit rotation of the lobed shaft with respect to the housing such that a fluid flow through the downhole drilling motor causes the power sleeve to rotate with respect, to the outer housing and the lobed shaft.
    Type: Application
    Filed: August 29, 2013
    Publication date: July 7, 2016
    Inventors: Alben D'SILVA, Edgar A. ESTRADA