TREA

Lance Nigel Portman

Follow

Person

  • Singapore, SG
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Method for cleaning gravel packs
    • Patent number 6,832,655
    • Issue date Dec 21, 2004
    • BJ Services Company
    • John Ravensbergen
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

  • Information Patent Application

    Method for cleaning gravel packs
    • Publication number 20050061503
    • Publication date Mar 24, 2005
    • John Gordon Misselbrook
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    Method for cleaning gravel packs
    • Publication number 20040060698
    • Publication date Apr 1, 2004
    • BJ Services Company
    • John Ravensbergen
    • E21 - EARTH DRILLING MINING