Patents by Inventor Clarence R. Dale

Clarence R. Dale 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: 3957117
    Abstract: Method and apparatus for bottom hole testing in producing or injection wells under pressure employing a tool adapted to be lowered on a flexible line to sampling depth in a well, the tool including a first section containing a closed sample chamber detachably connected to a second section containing time delay fluid escapement means operable to maintain the closed condition of the chamber until the sampling depth is reached and to then cause entry of a well fluid sample to the chamber followed by its closure to retain the sample and preserve the well pressure at the sampling location, the method including withdrawing the tool from the well, disconnecting the sections to recover the sample chamber independently of the second section, and transferring and opening the chamber for testing of its well fluid content.
    Type: Grant
    Filed: August 5, 1974
    Date of Patent: May 18, 1976
    Inventor: Clarence R. Dale