Patents by Inventor Archibald M. Laurie

Archibald M. Laurie 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).

  • Gravel-packing tool assembly
    Patent number: 4192375
    Abstract: An improved gravel-packing tool assembly with a baffled stinger pipe for gravel-packing a perforate liner having substantially the same internal diameter as the casing string extending from the perforate liner to the earth surface. A perforate nipple and a swab cup are provided between the check valve and the baffled stinger pipe of the tool assembly to allow drainage of the annulus above the tool assembly through the stinger pipe to thereby avoid swabbing the well as the tool is retrieved from the well.
    Type: Grant
    Filed: December 11, 1978
    Date of Patent: March 11, 1980
    Assignee: Union Oil Company of California
    Inventors: George P. Maly, Archibald M. Laurie