Patents by Inventor Ratnam SATHANANTHAN

Ratnam SATHANANTHAN 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).

  • Subsea processing of crude oil
    Patent number: 11577180
    Abstract: A subsea multiphase fluid separation system has a gas separator for separating gas from a well stream containing oil. A water separation stage downstream of the gas separator has at least one dual pipe separator for separating water from the oil of the wellstream. A water treatment system for cleaning oil from water is produced by the water separation stage. On an oil outlet path, downstream of the or each dual pipe separator, there is an electrocoalescer and at least one second separator in series.
    Type: Grant
    Filed: April 18, 2018
    Date of Patent: February 14, 2023
    Assignee: Subsea 7 Norway AS
    Inventors: Sigbjorn Daasvatn, Ratnam Sathananthan
  • Subsea processing of well fluids
    Patent number: 11091995
    Abstract: A wax control element for subsea processing of well fluids in a wellstream comprises a bundle of flowlines within an elongate tensile structure. That structure defines inlet and outlet ends and has cooling and heating provisions that act on the flowlines, in use, to promote deposition of wax in the flowlines and subsequent entrainment of wax in the wellstream.
    Type: Grant
    Filed: August 29, 2018
    Date of Patent: August 17, 2021
    Assignee: Subsea 7 Norway AS
    Inventors: Ratnam Sathananthan, James Arkley Pollock, Sigbjorn Daasvatn
  • Subsea Processing of Crude Oil
    Publication number: 20200139266
    Abstract: A subsea multiphase fluid separation system has a gas separator for separating gas from a well stream containing oil. A water separation stage downstream of the gas separator has at least one dual pipe separator for separating water from the oil of the wellstream. A water treatment system for cleaning oil from water is produced by the water separation stage. On an oil outlet path, downstream of the or each dual pipe separator, there is an electrocoalescer and at least one second separator in series.
    Type: Application
    Filed: April 18, 2018
    Publication date: May 7, 2020
    Inventors: Sigbjorn Daasvatn, Ratnam Sathananthan
  • Subsea Processing of Well Fluids
    Publication number: 20180371888
    Abstract: A wax control element for subsea processing of well fluids in a wellstream comprises a bundle of flowlines within an elongate tensile structure. That structure defines inlet and outlet ends and has cooling and heating provisions that act on the flowlines, in use, to promote deposition of wax in the flowlines and subsequent entrainment of wax in the wellstream.
    Type: Application
    Filed: August 29, 2018
    Publication date: December 27, 2018
    Inventors: Ratnam Sathananthan, James Arkley Pollock, Sigbjorn Daasvatn
  • Subsea processing of well fluids
    Patent number: 10066472
    Abstract: A wax control element for subsea processing of well fluids in a wellstream comprises a bundle of flowlines within an elongate tensile structure. That structure defines inlet and outlet ends and has cooling and heating provisions that act on the flowlines, in use, to promote deposition of wax in the flowlines and subsequent entrainment of wax in the wellstream.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: September 4, 2018
    Assignee: Subsea 7 Norway AS
    Inventors: Ratnam Sathananthan, James Arkley Pollock, Sigbjorn Daasvatn
  • Subsea processing of well fluids
    Patent number: 9644457
    Abstract: A towable unit for subsea processing of well fluids comprises a pipeline bundle extending between, and capable of acting in tension between, a first towhead at an upstream end of the bundle and a second towhead at a downstream end of the bundle. At least one of the towheads has an on-board processing facility for processing the well fluids, which facility effects at least separation of water phases that are present in the well fluids.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: May 9, 2017
    Assignee: Subsea 7 Norway AS
    Inventors: Ratnam Sathananthan, Sigbjorn Daasvatn
  • Subsea Processing of Well Fluids
    Publication number: 20150345275
    Abstract: A wax control element for subsea processing of well fluids in a wellstream comprises a bundle of flowlines within an elongate tensile structure. That structure defines inlet and outlet ends and has cooling and heating provisions that act on the flowlines, in use, to promote deposition of wax in the flowlines and subsequent entrainment of wax in the wellstream.
    Type: Application
    Filed: December 17, 2013
    Publication date: December 3, 2015
    Inventors: Ratnam Sathananthan, James Arkley Pollock, Sigbjorn Daasvatn
  • Subsea Processing of Well Fluids
    Publication number: 20150345274
    Abstract: A towable unit for subsea processing of well fluids comprises a pipeline bundle extending between, and capable of acting in tension between, a first towhead at an upstream end of the bundle and a second towhead at a downstream end of the bundle. At least one of the towheads has an on-board processing facility for processing the well fluids, which facility effects at least separation of water phases that are present in the well fluids.
    Type: Application
    Filed: December 17, 2013
    Publication date: December 3, 2015
    Inventors: Ratnam SATHANANTHAN, Sigbjorn DAASVATN