TREA

Robert D. Buchanan

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  • Belhelvie, GB
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Patents Grantslast 30 patents

  • Information Patent Grant

    Drill stem test tools
    • Patent number 5,259,456
    • Issue date Nov 9, 1993
    • Exploration and Production Services (North Sea) Ltd.
    • Jeffrey C. Edwards
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Valves
    • Patent number 5,222,559
    • Issue date Jun 29, 1993
    • Exploration and Production Services (North Sea) Ltd.
    • Jeffrey C. Edwards
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Well control apparatus
    • Patent number 5,193,619
    • Issue date Mar 16, 1993
    • Exploration and Production Services (North Sea) Ltd.
    • Jeffrey C. Edwards
    • E21 - EARTH DRILLING MINING