Patents by Inventor Laurence J. Ayling

Laurence J. Ayling 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).

  • Continuous circulation drilling method
    Patent number: 7322418
    Abstract: A method for drilling wells in which the tubular can be added or removed from the drill string whilst mud and drilling fluids being circulated continuously and kept separated from the environment to reduce pollution. A connector is used with an inlet and outlet for the mud etc. and which incorporates rams to seal off and separate the flow of mud as a tubular is added or removed.
    Type: Grant
    Filed: February 18, 2004
    Date of Patent: January 29, 2008
    Assignee: Coupler Developments Limited
    Inventor: Laurence J. Ayling
  • Continuous circulation drilling method
    Publication number: 20040159467
    Abstract: A method for drilling wells in which the tubular can be added or removed from the drill string whilst mud and drilling fluids being circulated continuously and kept separated from the environment to reduce pollution. A connector is used with an inlet and outlet for the mud etc. and which incorporates rams to seal off and separate the flow of mud as a tubular is added or removed.
    Type: Application
    Filed: February 18, 2004
    Publication date: August 19, 2004
    Inventor: Laurence J. Ayling
  • Continuous circulation drilling method
    Patent number: 6739397
    Abstract: Methods and apparati are disclosed for continuous circulation of drilling fluids while adding or removing tubulars to and from a drill string, and also for continuing drilling during the addition or removal of tubulars to and from the drill string.
    Type: Grant
    Filed: November 13, 2001
    Date of Patent: May 25, 2004
    Assignee: Coupler Developments Limited
    Inventor: Laurence J. Ayling
  • Drilling methods and apparatus
    Patent number: 6688394
    Abstract: A method for drilling wells in which the tubular (5) can be added or removed from the drill string (17) whilst the drill is rotating with the mud and drilling fluids being circulated continuously and kept separated from the environment to reduce pollution. A connector is used with an inlet (15) and outlet (10) for the mud etc. and which incorporates rams (11) to seal off and separate the flow of mud as a tubular is added or removed.
    Type: Grant
    Filed: October 31, 2000
    Date of Patent: February 10, 2004
    Assignee: Coupler Developments Limited
    Inventor: Laurence J. Ayling
  • Continuous circulation drilling method
    Publication number: 20020157838
    Abstract: Methods and apparati are disclosed for continuous circulation of drilling fluids while adding or removing tubulars to and from a drill string, and also for continuing drilling during the addition or removal of tubulars to and from the drill string.
    Type: Application
    Filed: November 13, 2001
    Publication date: October 31, 2002
    Inventor: Laurence J. Ayling