Patents by Inventor Chandra Gunawan

Chandra Gunawan 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).

  • Pressure isolation ring to isolate the setting chamber once hydraulic packer is set
    Patent number: 11859463
    Abstract: A hydraulic set packer system includes an outer sleeve and a mandrel extending through the outer sleeve. The mandrel has a setting port extending through a radial wall of the mandrel, and the setting port is configured to provide fluid communication from a central bore of the mandrel to a setting chamber formed between the outer sleeve and the mandrel. The system also includes a piston configured to move axially along the mandrel in response to a setting pressure in the setting chamber. The piston is configured to drive at least one radially actuatable component to actuate in a radial direction to engage a wellbore wall. Further, the system includes a pressure isolation assembly disposed in the setting chamber. The pressure isolation assembly is configured to move axially with respect to the mandrel from a first position to a second position to seal the setting port.
    Type: Grant
    Filed: December 8, 2021
    Date of Patent: January 2, 2024
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Ashishkumar M. Waghumbare, Abhay Raghunath Bodake, Mukesh Bhaskar Kshirsagar, Xian Zhi Lim, Chandra Gunawan
  • Pressure Isolation Ring To Isolate The Setting Chamber Once Hydraulic Packer Is Set
    Publication number: 20230175346
    Abstract: A hydraulic set packer system includes an outer sleeve and a mandrel extending through the outer sleeve. The mandrel has a setting port extending through a radial wall of the mandrel, and the setting port is configured to provide fluid communication from a central bore of the mandrel to a setting chamber formed between the outer sleeve and the mandrel. The system also includes a piston configured to move axially along the mandrel in response to a setting pressure in the setting chamber. The piston is configured to drive at least one radially actuatable component to actuate in a radial direction to engage a wellbore wall. Further, the system includes a pressure isolation assembly disposed in the setting chamber. The pressure isolation assembly is configured to move axially with respect to the mandrel from a first position to a second position to seal the setting port.
    Type: Application
    Filed: December 8, 2021
    Publication date: June 8, 2023
    Applicant: Halliburton Energy Services, Inc.
    Inventors: Ashishkumar M. Waghumbare, Abhay Raghunath Bodake, Mukesh Bhaskar Kshirsagar, Xian Zhi Lim, Chandra Gunawan
  • Nephrolepis Fern plant named ‘Tiger Fern’
    Patent number: PP15315
    Abstract: A new and distinct cultivar of Nephrolepis Fern plant named ‘Tiger Fern’, characterized by its upright and outwardly arching plant habit; vigorous growth habit; durable rachis; green and yellow green variegated pinnae; and closely-spaced pinnae; densely foliated.
    Type: Grant
    Filed: January 8, 2004
    Date of Patent: November 16, 2004
    Assignee: Exotic Foliage Nursery, Inc
    Inventor: Chandra Gunawan Hendarto