Patents by Inventor R. Lemanczyk

R. Lemanczyk 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).

  • Process for selectively treating a subterranean formation using coiled tubing without affecting or being affected by the two adjacent zones
    Patent number: 4842068
    Abstract: The invention consists of a new process for selectively treating a subterranean formation without affecting or being effected by the two adjacent zones (above and below).Using the invented process, the treatment fluid is injected into the formation to be treated F, at the same time as two protection fluids, whether the same or different, are injected into the two adjacent zones (above [ZS] and below [ZI]).The process can be applied even in the presence of fractures, gravel-pack and their zones.
    Type: Grant
    Filed: December 21, 1987
    Date of Patent: June 27, 1989
    Assignee: Dowell Schlumberger Incorporated
    Inventors: Claude Vercaemer, R. Lemanczyk, Bernard Piot