Patents Assigned to Environmental Technology AS
  • Apparatus and a method of fragmenting hard particles
    Patent number: 7798218
    Abstract: A method of treating particulate hard materials driven to the surface of a well in a returning well flow in connection with a producing well or well stimulation operations in the petroleum production industry, the method including fragmentation of the hard particles by means of a crushing device, whereupon the fragmented hard particles are turned into a slurry which is then re-injected into an injection well.
    Type: Grant
    Filed: August 24, 2006
    Date of Patent: September 21, 2010
    Assignee: Environmental Technology AS
    Inventors: Johannes B. Garstad, Helge Stridsklev, Sven Egil Tjørhom
  • Apparatus and a Method of Fragmenting Hard Particles
    Publication number: 20080230222
    Abstract: A method of treating particulate hard materials driven to the surface of a well in a returning well flow in connection with a producing well or well stimulation operations in the petroleum production industry, the method including fragmentation of the hard particles by means of a crushing device, whereupon the fragmented hard particles are turned into a slurry which is then re-injected into an injection well.
    Type: Application
    Filed: August 24, 2006
    Publication date: September 25, 2008
    Applicant: ENVIRONMENTAL TECHNOLOGY AS
    Inventors: Johannes B. Garstad, Helge Stridsklev, Sven Egil Tjorhom