Patents Assigned to UMA Ltd.
  • Method of oil well productivity increase
    Patent number: 5337825
    Abstract: Oil wells productivity is increased by cyclically treating a shaft-adjacent zone of the well with a seam-forming liquid which contains additional activating components.
    Type: Grant
    Filed: June 7, 1993
    Date of Patent: August 16, 1994
    Assignee: UMA Ltd.
    Inventors: Leon M. Marmorstein, Ignaty M. Petuhov, Vladimir S. Sidorov, Piotr A. Aleksandrov, Valentin T. Grebennikov