Patents Assigned to BACKOFF, LLC
  • Blowout preventer test joint assembly for testing variable bore rams, shear rams and annulars
    Patent number: 9771771
    Abstract: The invention discloses a test joint assembly for testing subsea BOP stack valves and annulars in one trip. The test joint assembly has an outer mandrel and a telescopically extendable inner mandrel. The inner mandrel seals against a bottom sub member using a bullnose sealing member.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: September 26, 2017
    Assignee: BACKOFF, LLC
    Inventors: Brian Williams, Gregory LaFleur
  • Blowout preventer test joint assembly, for testing variable bore rams, shear rams, and annulars
    Patent number: 9506312
    Abstract: The invention discloses a test joint assembly for testing subsea BOP stack valves and annulars in one trip. The test joint assembly has an outer mandrel and a telescopically extendable inner mandrel. The inner mandrel seals against a bottom sub member using a bullnose sealing member.
    Type: Grant
    Filed: February 3, 2015
    Date of Patent: November 29, 2016
    Assignee: BACKOFF, LLC
    Inventors: Brian Williams, Gregory LaFleur
  • Blowout-preventer-stack one-trip test tool and method
    Patent number: 9470082
    Abstract: A blowout-preventer-stack one-trip test tool and method providing a solid test pin for sealing the test plug in the wellhead, a running tool for securely placing, separating from, reattaching, and removing the solid test pin, testing all fixed and variable rams and annulars and testing all blind and shear rams without damage to pipe, in one trip, and a fail-safe secondary provision for removing the solid test plug on a second trip with an emergency retrieval tool if necessary.
    Type: Grant
    Filed: May 5, 2015
    Date of Patent: October 18, 2016
    Assignee: BACKOFF, LLC
    Inventors: Brian Williams, Gregory LaFleur