Patents by Inventor Charles T. Kirkpatrick

Charles T. Kirkpatrick 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).

  • Patent number: 9739116
    Abstract: A system involving a lower tubing mounted safety valve having one or two control lines further contains a landing nipple above for a wireline insert valve. One line that serves the lower safety valve is tied to a connection on the landing nipple for the insert valve. When the lower safety valve malfunctions the landing nipple wall is penetrated to get communication to the line coming from the lower safety valve so that such line can serve as a balance line for the insert valve. The other line from the surface to the other connection on the landing nipple serves as the operating line for the insert valve. Making one line serve a dual purpose eliminates one control line from the surface.
    Type: Grant
    Filed: June 6, 2014
    Date of Patent: August 22, 2017
    Assignee: Baker Hughes Incorporated
    Inventor: Charles T. Kirkpatrick
  • Patent number: 9567829
    Abstract: A method of completing a subsea borehole including connecting a first vessel to a subsea wellhead assembly via a riser. A borehole is drilled with a drill string communicated to the subsea wellhead assembly through the riser. A lower completion assembly is run on a service string into the borehole through the riser. At least two barrier valves of the lower completion assembly are set with the service string in order to form a mechanical barrier to fluid flow with each of the at least two barrier valves. The riser is disconnected from the subsea wellhead assembly. An upper completion string is run through open water to the borehole and connected to the lower completion assembly. An lower completion assembly for a subsea borehole is also included.
    Type: Grant
    Filed: May 9, 2013
    Date of Patent: February 14, 2017
    Assignee: BAKER HUGHES INCORPORATED
    Inventors: Eguaoje J. Pogoson, Charles T. Kirkpatrick, Nicholas J. Clem, Ian M. LeBlanc, Jonathan N. Croy, Andres Garcia, Kenneth J. Chauvin
  • Publication number: 20150354316
    Abstract: A system involving a lower tubing mounted safety valve having one or two control lines further contains a landing nipple above for a wireline insert valve. One line that serves the lower safety valve is tied to a connection on the landing nipple for the insert valve. When the lower safety valve malfunctions the landing nipple wall is penetrated to get communication to the line coming from the lower safety valve so that such line can serve as a balance line for the insert valve. The other line from the surface to the other connection on the landing nipple serves as the operating line for the insert valve. Making one line serve a dual purpose eliminates one control line from the surface.
    Type: Application
    Filed: June 6, 2014
    Publication date: December 10, 2015
    Applicant: BAKER HUGHES INCORPORATED
    Inventor: Charles T. Kirkpatrick
  • Publication number: 20140332224
    Abstract: A method of completing a subsea borehole including connecting a first vessel to a subsea wellhead assembly via a riser. A borehole is drilled with a drill string communicated to the subsea wellhead assembly through the riser. A lower completion assembly is run on a service string into the borehole through the riser. At least two barrier valves of the lower completion assembly are set with the service string in order to form a mechanical barrier to fluid flow with each of the at least two barrier valves. The riser is disconnected from the subsea wellhead assembly. An upper completion string is run through open water to the borehole and connected to the lower completion assembly. An lower completion assembly for a subsea borehole is also included.
    Type: Application
    Filed: May 9, 2013
    Publication date: November 13, 2014
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Eguaoje J. Pogoson, Charles T. Kirkpatrick, Nicholas J. Clem, Ian M. LeBlanc, Jonathan N. Croy, Andres Garcia, Kenneth J. Chauvin
  • Patent number: 8555960
    Abstract: A tubing pressure operated sliding sleeve is used in cementing a tubular string. The sleeve is configured to hold closed as pressure builds to a predetermined value. When pressure is further raised a rupture disc blows and provides access to an integral piston disposed outside the sleeve. The back side of the piston is exposed to a low pressure or atmospheric chamber located between upper and lower seals. The sleeve thickness near the chamber can be made relatively thick to avoid flexing or bending under differential pressure because the net force to shift the sleeve is from differential pressure on the piston rather than the piston areas created by the upper and lower seals.
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: October 15, 2013
    Assignee: Baker Hughes Incorporated
    Inventors: Jason C. Mailand, Justin C. Kellner, Charles C. Jonhson, Charles T. Kirkpatrick, Marcus A. Avant
  • Publication number: 20130025872
    Abstract: A tubing pressure operated sliding sleeve is used in cementing a tubular string. The sleeve is configured to hold closed as pressure builds to a predetermined value. When pressure is further raised a rupture disc blows and provides access to an integral piston disposed outside the sleeve. The back side of the piston is exposed to a low pressure or atmospheric chamber located between upper and lower seals. The sleeve thickness near the chamber can be made relatively thick to avoid flexing or bending under differential pressure because the net force to shift the sleeve is from differential pressure on the piston rather than the piston areas created by the upper and lower seals.
    Type: Application
    Filed: July 29, 2011
    Publication date: January 31, 2013
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Jason C. Mailand, Justin C. Kellner, Charles C. Jonhson, Charles T. Kirkpatrick, Marcus A. Avant
  • Patent number: RE46137
    Abstract: A tubing pressure operated sliding sleeve is used in cementing a tubular string. The sleeve is configured to hold closed as pressure builds to a predetermined value. When pressure is further raised a rupture disc blows and provides access to an integral piston disposed outside the sleeve. The back side of the piston is exposed to a low pressure or atmospheric chamber located between upper and lower seals. The sleeve thickness near the chamber can be made relatively thick to avoid flexing or bending under differential pressure because the net force to shift the sleeve is from differential pressure on the piston rather than the piston areas created by the upper and lower seals.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: September 6, 2016
    Assignee: Baker Hughes Incorporated
    Inventors: Mailand C. Jason, Justin C. Kellner, Charles C. Johnson, Charles T. Kirkpatrick, Marcus A. Avant