Patent Yard Sign in
Expired Canadian patentCanada

Method for detecting and controlling the formation of hydrates at any point in a line in which polyphasic petroleum fluids circulate

CA 2374089 C · Owner: Institut Francais Du Petrole · Inventors: Lachet, Veronique; Henriot, Veronique; Heintze, Eric

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Abstract From the Canadian patent

Method intended for continuous detection and control of hydrate formation at any point of a pipe carrying multiphase petroleum fluids. The method uses a compositional code allowing to simulate the circulation modes and conditions at any point of the pipe considering that the fluid mixture is substantially continuously at equilibrium that the composition of the multiphase mixture is variable all along the pipe and that the mass of each constituent of the mixture is globally defined by a mass conservation equation regardless of its phase state. The thermodynamic hydrate formation conditions are detected after a particular stage of grouping the petroleum fluids into pseudo-components so as to …

Read the whole patent

Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Filed February 26, 2002 and granted January 11, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 26, 2022.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 26, 2024.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 26, 2002
GrantedJanuary 11, 2011
Term endedFebruary 26, 2022
Patent numberCA 2374089 C
Classification (IPC)E21B49/00 +1 more

Timeline

Timeline From CIPO dates

2003200520072009201120132015201720192021Application filedFeb 26, 2002Patent grantedJan 11, 2011Term endedFeb 26, 2022

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.