Patents by Inventor Darin Grassmann

Darin Grassmann 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: 20230148442
    Abstract: A flow diverter comprises a surface to divert fluid flow within oil and gas wellbore equipment exposed to flows of abrasive, corrosive, or otherwise deleterious fluids, such as those used in hydraulic fracturing. The diverter may comprise a concave surface used to limit damage to surfaces within components used to connect a frac manifold to a frac tree or to prevent the flow of fracturing fluid from a frac manifold to a frac tree.
    Type: Application
    Filed: May 3, 2022
    Publication date: May 11, 2023
    Applicant: OIL STATES ENERGY SERVICES, L.L.C.
    Inventors: Richard Brian Sizemore, Bob McGuire, Darin Grassmann, Mickey Claxton
  • Publication number: 20220307362
    Abstract: A frac manifold isolation tool configured to connect to a zipper spool, and comprising a mandrel that is axially movable and a hydraulic setting tool configured to move the mandrel from an open position, in which fracturing fluid is allowed to flow from a zipper spool to a connected frac tree, to a closed position, in which the mandrel and its associated cup tool direct flow.
    Type: Application
    Filed: June 14, 2022
    Publication date: September 29, 2022
    Applicant: OIL STATES ENERGY SERVICES, L.L.C.
    Inventors: Jimmy Livingston, Haifang Zhao, Bob McGuire, Mickey Claxton, Danny Artherholt, Darin Grassmann
  • Publication number: 20220259963
    Abstract: A flow diverter comprises a surface to divert fluid flow within oil and gas wellbore equipment exposed to flows of abrasive, corrosive, or otherwise deleterious fluids, such as those used in hydraulic fracturing. The diverter may comprise a concave surface used to limit damage to surfaces within components used to connect a frac manifold to a frac tree or to prevent the flow of fracturing fluid from a frac manifold to a frac tree.
    Type: Application
    Filed: May 3, 2022
    Publication date: August 18, 2022
    Applicant: OIL STATES ENERGY SERVICES, L.L.C.
    Inventors: Richard Brian Sizemore, Bob McGuire, Darin Grassmann, Mickey Claxton
  • Patent number: 11214455
    Abstract: An extendable spool is disclosed. The length of the extendable spool is able to continuously varied. The extendable spool accounts for length variances in flow lines by extending the flow line rather than redirecting the flow. Because the flow direction does not make any turns, erosion is minimized on both the extendable spool and downstream parts. The extendable spool is readily scalable from small diameters to large diameters. Because of this, it requires fewer lines and therefore less setup time to account for length differences between large diameter lines.
    Type: Grant
    Filed: March 4, 2019
    Date of Patent: January 4, 2022
    Assignee: Oil States Energy Services, L.L.C.
    Inventors: Bob McGuire, Danny L. Artherholt, Mickey Claxton, Blake Mullins, Darin Grassmann
  • Patent number: 11168528
    Abstract: A universal atmospheric deployment device (“UADD”) for use in oil and gas production or similar applications is provided. In one embodiment, the UADD includes a number of storage carriers disposed around a pathway that can be deployed into a well bore. The figures and art described herein show that this novel feature can increase the speed and usefulness of dispatching tools down a well bore, and also decrease down time to install or retrieve these devices. This UADD also removes personnel from the hazardous area, allowing for remote deployment of tools and devices.
    Type: Grant
    Filed: February 24, 2020
    Date of Patent: November 9, 2021
    Assignee: OIL STATES ENERGY SERVICES, L.L.C.
    Inventors: Bob McGuire, Danny L Artherholt, Mickey Claxton, Blake Mullins, Darin Grassmann, Jimmy Livingston
  • Publication number: 20200277832
    Abstract: A universal atmospheric deployment device (“UADD”) for use in oil and gas production or similar applications is provided. In one embodiment, the UADD includes a number of storage carriers disposed around a pathway that can be deployed into a well bore. The figures and art described herein show that this novel feature can increase the speed and usefulness of dispatching tools down a well bore, and also decrease down time to install or retrieve these devices. This UADD also removes personnel from the hazardous area, allowing for remote deployment of tools and devices.
    Type: Application
    Filed: February 24, 2020
    Publication date: September 3, 2020
    Applicant: OIL STATES ENERGY SERVICES, L.L.C.
    Inventors: Bob McGuire, Danny L Artherholt, Mickey Claxton, Blake Mullins, Darin Grassmann, Jimmy Livingston
  • Publication number: 20200148493
    Abstract: An extendable spool is disclosed. The length of the extendable spool is able to continuously varied. The extendable spool accounts for length variances in flow lines by extending the flow line rather than redirecting the flow. Because the flow direction does not make any turns, erosion is minimized on both the extendable spool and downstream parts. The extendable spool is readily scalable from small diameters to large diameters. Because of this, it requires fewer lines and therefore less setup time to account for length differences between large diameter lines.
    Type: Application
    Filed: March 4, 2019
    Publication date: May 14, 2020
    Applicant: OIL STATES ENERGY SERVICES, L.L.C.
    Inventors: Bob McGuire, Danny L. Artherholt, Mickey Claxton, Blake Mullins, Darin Grassmann
  • Patent number: 10309564
    Abstract: An extendable spool is disclosed. The length of the extendable spool is able to continuously varied. The extendable spool accounts for length variances in flow lines by extending the flow line rather than redirecting the flow. Because the flow direction does not make any turns, erosion is minimized on both the extendable spool and downstream parts. The extendable spool is readily scalable from small diameters to large diameters. Because of this, it requires fewer lines and therefore less setup time to account for length differences between large diameter lines.
    Type: Grant
    Filed: November 8, 2018
    Date of Patent: June 4, 2019
    Assignee: OIL STATES ENERGY SERVICES, L.L.C.
    Inventors: Bob McGuire, Danny L. Artherholt, Mickey Claxton, Blake Mullins, Darin Grassmann