Patents Assigned to Ufimsky Neftyanoi Institut
  • Method for isolation of intake beds in drill holes and a device for carrying same into effect
    Patent number: 4842066
    Abstract: There is claimed a method for isolating intake beds in drill holes (wells), wherein a cement slurry is pumped into a drill pipe string from a well mouth and flash setting and thickening of the cement slurry is ensured once it has left the drill pipe string and a separated phase of lower density is directed to the well mouth via an annular space of the well above a lost circulation zone. A device for carrying same into effect is also claimed.
    Type: Grant
    Filed: May 5, 1987
    Date of Patent: June 27, 1989
    Assignee: Ufimsky Neftyanoi Institut
    Inventors: Vil F. Galiakbarov, Rashit K. Sannikov, Midkhat R. Mavljutov, Alexandr S. Fomin, Vladimir D. Baranovsky, Radil A. Galiev, Rinat G. Sedakov, deceased