Patents by Inventor Thomas J. Murray, Jr.

Thomas J. Murray, Jr. 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).

  • Multishot downhole explosive device as a seismic source
    Patent number: 4895218
    Abstract: A downhole seismic acoustical signal source capable of selectively firing numerous, prewired explosive charges. The downhole seismic source uses a self-contained firing circuit that is capable of receiving select and fire signals from a seismic crew at the ground surface through a standard seven conductor wireline cable to detonate the explosive charges. The downhole seismic source is capable of generating numerous signals in a given downhole trip through the firing of many individual explosive charges.
    Type: Grant
    Filed: October 24, 1988
    Date of Patent: January 23, 1990
    Assignee: Exxon Production Research Company
    Inventors: Sen-Tsuen Chen, Erik A. Eriksen, Mark A. Miller, Thomas J. Murray, Jr.