Patents Assigned to BP Exploration Operating Company, Ltd.
  • Patent number: 6835756
    Abstract: Process for the conversion of synthesis gas to liquid hydrocarbon products by contacting, in a slurry reactor, synthesis gas at an elevated temperature and pressure with a suspension of catalyst in a liquid medium, introducing a low boiling solvent into the slurry reactor, vaporising at least a portion of the low boiling solvent in the slurry reactor, withdrawing from the slurry reactor, a gaseous stream comprising unreacted synthesis gas and vaporised low boiling solvent, cooling at least a portion of the gaseous stream to a temperature at which liquid condenses out so as to form a two phase mixture of gas and condensed liquid, and recycling at least a portion of the gas and at least a portion of the condensed liquid to the slurry reactor.
    Type: Grant
    Filed: June 17, 2003
    Date of Patent: December 28, 2004
    Assignees: BP Exploration Operating Company Ltd., Davy Process Technology Limited
    Inventors: Josephus Johannes Helena Maria Font Freide, Stephen Fortune, Barry Nay, David Newton
  • Patent number: 6464859
    Abstract: This invention relates to a process for deacidifying a crude oil system, said process comprising the steps of: a) contacting the crude oil system with a polar solvent, such that at least part of the organic acid present in the oil is extracted into the solvent as an extract phase, and b) separating said extract phase from the treated crude oil system of step a).
    Type: Grant
    Filed: August 29, 2000
    Date of Patent: October 15, 2002
    Assignee: BP Exploration Operating Company, Ltd.
    Inventors: Simon Neil Duncum, Christopher George Osborne
  • Patent number: 5992527
    Abstract: A wellhead assembly in which an in-line tree (10) is landed within a wellhead housing (3). The in-line tree has a vertical production through bore (11), two hydraulically or electrically controllably in-line valves (13A, 13B) in the vertical production bore, and a lateral bore (16) leading from the vertical production through bore. A horizontal tree (20) having a vertical through bore (23) is landed on the wellhead housing (3) so that the in-line tree (20) is within the vertical bore. The horizontal tree has a lateral bore (24) which is aligned with the lateral bore (16) of the in-line tree. The in-line tree (10) can be run in and retrieved through the horizonal tree (20). Alternatively the horizontal tree (20) can be removed from the wellhead housing (3) without a BOP if the in-line valves (13A, 13B) are closed.
    Type: Grant
    Filed: October 15, 1997
    Date of Patent: November 30, 1999
    Assignees: Cooper Cameron Corporation, BP Exploration Operating Company, Ltd.
    Inventors: David Garnham, Brian Hart, Craig Duell