Patents Assigned to HWC Energy Services, Inc.
  • Adapters for double-locking casing mandrel and method of using same
    Patent number: 7040410
    Abstract: Adapters for connecting to a double-locking casing mandrel of an independent screwed wellhead include a lockdown flange with an adapter pin, and a retainer flange that may be used with or without the adapter pin. The retainer flange has a top surface with circumferentially-spaced threaded bores that permit well stimulation equipment to be mounted thereto. The retainer flange threadedly connects to a pin thread at a top of the casing mandrel, and therefore provides a low profile mounting flange for well stimulation equipment.
    Type: Grant
    Filed: July 10, 2003
    Date of Patent: May 9, 2006
    Assignee: HWC Energy Services, Inc.
    Inventors: Bob McGuire, L. Murray Dallas