Patents by Inventor Emmitt D. Hall, Jr.

Emmitt D. Hall, 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).

  • Patent number: 4291767
    Abstract: Surface casing stabilizer and hanger means includes a downwardly tapered and inwardly inclined annular outer surface and a concentric, contoured inner annular surface. The surface casing hanger and stabilizer engages and supports surface casing in a conductor pipe and connects the surface casing to the conductor pipe. In practicing the method, the conductor pipe is first positioned in the earth's surface and a well bore drilled therethrough to the desired depth for receiving the surface casing, which surface casing is then lowered into the well bore. Cement is then discharged through the surface casing to fill the annulus between the surface casing and the conductor pipe. While the cement is soft and before it hardens, the conductor pipe's upper end is cut off at the desired elevation and the surface casing then elevated to enable the surface casing stabilizer and hanger means to be engaged therearound.
    Type: Grant
    Filed: February 6, 1980
    Date of Patent: September 29, 1981
    Inventor: Emmitt D. Hall, Jr.