Patents by Inventor Alexander Angus Grant

Alexander Angus Grant 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).

  • Downhole gas/water separation and re-injection
    Patent number: 6691781
    Abstract: It is common in oil extraction operations to reinject produced gas and\or water back into hydrocarbon bearing formations in order to maintain formation pressure. Conventional production facilities normally flow all formation fluids to the surface and subsequently reinject the required fluids back into the formation, which can be extremely inefficient due to the high power input required to overcome the large pressure differential between the surface and formation level. A production fluid handling method and apparatus for separating downhole at least gaseous and liquid components (16, 18, 20) of fluid produced from a hydrocarbon bearing formation (12), and reinjecting at least a portion of the gaseous and liquid components (16, 18, 20), as required, back into the formation (12). Re-injection also occurs downhole.
    Type: Grant
    Filed: September 13, 2001
    Date of Patent: February 17, 2004
    Assignees: Weir Pumps Limited, Norsk Hydro ASA
    Inventors: Alexander Angus Grant, Per Almdahl, Per Eivind Gramme, Sven Arne Kjolberg, Bjarne Olsen, Terje Sondtvedt
  • Downhole gas/water separation and re-injection
    Publication number: 20020059866
    Abstract: It is common in oil extraction operations to reinject produced gas and\or water back into hydrocarbon bearing formations in order to maintain formation pressure. Conventional production facilities normally flow all formation fluids to the surface and subsequently reinject the required fluids back into the formation, which can be extremely inefficient due to the high power input required to overcome the large pressure differential between the surface and formation level.
    Type: Application
    Filed: September 13, 2001
    Publication date: May 23, 2002
    Inventors: Alexander Angus Grant, Per Almdahl, Per Eivind Gramme, Sven Arne Kjolberg, Bjarne Olsen, Terje Sondtvedt