Patents by Inventor Curtis W. Kofoed

Curtis W. Kofoed 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: 9581003
    Abstract: Methods and systems for completing a well including injecting stimulation fluid to stimulate a first interval in the reservoir. The stimulation fluid has a pressure sufficient to open a number of check valves in the first interval, allowing stimulation fluid to flow into the first interval. A number of ball sealers configured to block flow through the check valves are dropped into the well to stop the flow of stimulation fluid into the first interval and begin treatment of a second interval. The stimulation fluid is injected to stimulate a subsequent interval with pressure sufficient to open a number of check valves in the subsequent interval, allowing stimulation fluid to flow into the subsequent interval. The dropping of ball sealers is repeated until all intervals are treated. At least part of the check valves are configured to allow stimulation fluid to flow into a distribution chamber with multiple openings.
    Type: Grant
    Filed: December 11, 2012
    Date of Patent: February 28, 2017
    Assignee: ExxonMobil Upstream Research Company
    Inventors: Curtis W. Kofoed, Pavlin B. Entchev, Stuart R. Keller, Jeffrey D. Spitzenberger
  • Publication number: 20140318781
    Abstract: Methods and systems for completing a well including injecting stimulation fluid to stimulate a first interval in the reservoir. The stimulation fluid has a pressure sufficient to open a number of check valves in the first interval, allowing stimulation fluid to flow into the first interval. A number of ball sealers configured to block flow through the check valves are dropped into the well to stop the flow of stimulation fluid into the first interval and begin treatment of a second interval. The stimulation fluid is injected to stimulate a subsequent interval with pressure sufficient to open a number of check valves in the subsequent interval, allowing stimulation fluid to flow into the subsequent interval. The dropping of ball sealers is repeated until all intervals are treated. At least part of the check valves are configured to allow stimulation fluid to flow into a distribution chamber with multiple openings.
    Type: Application
    Filed: December 11, 2012
    Publication date: October 30, 2014
    Inventors: Curtis W. Kofoed, Pavlin B. Entchev, Stuart R. Keller, Jeffrey D. Spitzenberger
  • Patent number: 8490685
    Abstract: A method and apparatus associated with the production of hydrocarbons. In one embodiment, the method describes connecting multiple wells to a stimulation fluid pumping system via a pumping system manifold. The pumping system manifold is adjusted to provide a first well flow path from the stimulation fluid pumping system to a first well. Then, a first stimulation treatment is pumped into the first well. Concurrently with the pumping of the first stimulation treatment, a second well is prepared for a second stimulation treatment.
    Type: Grant
    Filed: July 24, 2006
    Date of Patent: July 23, 2013
    Assignee: ExxonMobil Upstream Research Company
    Inventors: Randy C. Tolman, William A. Sorem, Kris J. Nygaard, Jeff W. Simons, Curtis W. Kofoed
  • Publication number: 20090114392
    Abstract: A method and apparatus associated with the production of hydrocarbons. In one embodiment, the method describes connecting multiple wells to a stimulation fluid pumping system via a pumping system manifold. The pumping system manifold is adjusted to provide a first well flow path from the stimulation fluid pumping system to a first well. Then, a first stimulation treatment is pumped into the first well. Concurrently with the pumping of the first stimulation treatment, a second well is prepared for a second stimulation treatment.
    Type: Application
    Filed: July 24, 2006
    Publication date: May 7, 2009
    Inventors: Randy C. Tolman, William A. Sorem, Kris J. Nygaard, Jeff W. Simons, Curtis W. Kofoed