Patents by Inventor Alan Craigon

Alan Craigon 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).

  • Flow restrictor
    Patent number: 11180971
    Abstract: A flow restrictor for restricting flow in an annulus, the flow restrictor comprising a body and a restrictor assembly mounted on the body, wherein the restrictor assembly is actuatable between a run-in configuration and a set configuration in which at least a portion of the restrictor assembly is radially splayed to thereby substantially restrict flow in the annulus, and wherein the flow restrictor is actuatable by fluid flow over the restrictor assembly above a threshold flow rate to actuate the restrictor assembly from the run-in configuration to the set configuration.
    Type: Grant
    Filed: July 25, 2012
    Date of Patent: November 23, 2021
    Assignee: Weatherford Technology Holdings, LLC
    Inventors: Alan Craigon, Philip C G Egleton, Stephen Reid, Andrew John Elrick, Santiago Galvez Porta
  • Downhole apparatus and method
    Patent number: 10077627
    Abstract: An activation apparatus (10) for activating a downhole tool comprising a top sub (12), a bottom sub (14), an outer sleeve (16) having a port (18) and an inner sleeve (20) having a port (22). The apparatus (10) is configurable between a run-in configuration in which the ports (18, 22) are not aligned and an activated configuration in which the ports (18, 22) are aligned and permit lateral passage of fluid through the apparatus (10), the activation apparatus (10) being configured such that application of at least two forces to the activation apparatus (10) transitions the activation apparatus (10) from the run-in configuration to the activated configuration.
    Type: Grant
    Filed: November 7, 2013
    Date of Patent: September 18, 2018
    Assignee: PETROWELL LIMITED
    Inventors: Alan Craigon, Stephen Reid, Philip C G Egleton
  • Flow Restrictor
    Publication number: 20150330174
    Abstract: A flow restrictor for restricting flow in an annulus, the flow restrictor comprising a body and a restrictor assembly mounted on the body, wherein the restrictor assembly is actuatable between a run-in configuration and a set configuration in which at least a portion of the restrictor assembly is radially splayed to thereby substantially restrict flow in the annulus, and wherein the flow restrictor is actuatable by fluid flow over the restrictor assembly above a threshold flow rate to actuate the restrictor assembly from the run-in configuration to the set configuration.
    Type: Application
    Filed: July 25, 2012
    Publication date: November 19, 2015
    Inventors: Alan Craigon, Philip CG Egleton, Stephen Reid, Andrew John Elrich, Santiago Galvez Porta
  • DOWNHOLE APPARATUS AND METHOD
    Publication number: 20150285028
    Abstract: An activation apparatus (10) for activating a downhole tool comprising a top sub (12), a bottom sub (14), an outer sleeve (16) having a port (18) and an inner sleeve (20) having a port (22). The apparatus (10) is configurable between a run-in configuration in which the ports (18, 22) are not aligned and an activated configuration in which the ports (18, 22) are aligned and permit lateral passage of fluid through the apparatus (10), the activation apparatus (10) being configured such that application of at least two forces to the activation apparatus (10) transitions the activation apparatus (10) from the run-in configuration to the activated configuration.
    Type: Application
    Filed: November 7, 2013
    Publication date: October 8, 2015
    Inventors: Alan Craigon, Stephen Reid, Philip CG Egleton