Patents by Inventor Paul Lincoln SMITH

Paul Lincoln SMITH 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).

  • Method and apparatus for actuating downhole tools
    Patent number: 10753177
    Abstract: A method of actuating at least one of a plurality of downhole tools connected to at least one hydraulic fluid line is disclosed. The method includes the steps of:— a) providing each of the downhole tools with a control unit comprising a timer which permits fluid communication between the at least one hydraulic fluid line and the downhole tool during a window of time; and b) controlling the pressure in the at least one hydraulic fluid line for at least a sufficient period of time required to at least actuate the said downhole tool, wherein the said sufficient period of time coincides at least partially with the said window of time.
    Type: Grant
    Filed: February 19, 2018
    Date of Patent: August 25, 2020
    Assignee: Weatherford Technology Holdings, LLC
    Inventors: Daniel George Purkis, Paul Lincoln Smith, Simon John Harrall
  • Method and apparatus for actuating downhole tools
    Patent number: 10287852
    Abstract: A method of actuating at least one of a plurality of downhole tools (10) connected to at least one hydraulic fluid line (L1, L2) is disclosed. The method includes the steps of: a) providing each of the downhole tools with a control unit (20) comprising a timer which permits fluid communication between the at least one hydraulic fluid line and the downhole tool during a window of time; and b) controlling the pressure in the at least one hydraulic fluid line for at least a sufficient period of time required to at least actuate the said downhole tool, wherein the said sufficient period of time coincides at least partially with the said window of time.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: May 14, 2019
    Assignee: Weatherford Technology Holdings, LLC
    Inventors: Daniel George Purkis, Paul Lincoln Smith, Simon John Harrall
  • METHOD AND APPARATUS FOR ACTUATING DOWNHOLE TOOLS
    Publication number: 20180171753
    Abstract: A method of actuating at least one of a plurality of downhole tools connected to at least one hydraulic fluid line is disclosed. The method includes the steps of:— a) providing each of the downhole tools with a control unit comprising a timer which permits fluid communication between the at least one hydraulic fluid line and the downhole tool during a window of time; and b) controlling the pressure in the at least one hydraulic fluid line for at least a sufficient period of time required to at least actuate the said downhole tool, wherein the said sufficient period of time coincides at least partially with the said window of time.
    Type: Application
    Filed: February 19, 2018
    Publication date: June 21, 2018
    Inventors: Daniel George PURKIS, Paul Lincoln SMITH, Simon John HARRALL
  • METHOD AND APPARATUS FOR ACTUATING DOWNHOLE TOOLS
    Publication number: 20150369006
    Abstract: A method of actuating at least one of a plurality of downhole tools (10) connected to at least one hydraulic fluid line (L1, L2) is disclosed. The method includes the steps of: a) providing each of the downhole tools with a control unit (20) comprising a timer which permits fluid communication between the at least one hydraulic fluid line and the downhole tool during a window of time; and b) controlling the pressure in the at least one hydraulic fluid line for at least a sufficient period of time required to at least actuate the said downhole tool, wherein the said sufficient period of time coincides at least partially with the said window of time.
    Type: Application
    Filed: March 13, 2014
    Publication date: December 24, 2015
    Applicant: Petrowell Limited
    Inventors: Daniel George PURKIS, Paul Lincoln SMITH, Simon John HARRALL