Patents by Inventor Dennis J. HAGGERTY

Dennis J. HAGGERTY 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).

  • PERFORATING GUN WITH VARIABLE FREE GUN VOLUME
    Publication number: 20120181026
    Abstract: A method of adjusting a pressure reduction to occur in a wellbore following firing of at least one perforating gun can include determining a desired free gun volume which corresponds to a desired pressure reduction in the wellbore resulting from firing of the perforating gun, and varying a free gun volume of the perforating gun until the free gun volume is substantially the same as the desired free gun volume. A well system can include at least one perforating gun positioned in a wellbore, the perforating gun comprising multiple perforating charges and a free gun volume, and the free gun volume being reduced by presence of a flowable material about the multiple perforating charges.
    Type: Application
    Filed: January 6, 2012
    Publication date: July 19, 2012
    Applicant: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: Cam LE, Dennis J. HAGGERTY