TREA

Petroline Wireline Services Limited

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  • GB
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Patents Grantslast 30 patents

  • Information Patent Grant

    Self-piloting check valve
    • Patent number 5,636,661
    • Issue date Jun 10, 1997
    • Petroline Wireline Services Limited
    • Peter B. Moyes
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Lock mandrel for downhole assemblies
    • Patent number 5,409,059
    • Issue date Apr 25, 1995
    • Petroline Wireline Services Limited
    • Colin McHardy
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Upstroke jar
    • Patent number 5,267,613
    • Issue date Dec 7, 1993
    • Petroline Wireline Services Limited
    • Klaas J. Zwart
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Anti blow-out control apparatus
    • Patent number 5,156,209
    • Issue date Oct 20, 1992
    • Petroline Wireline Services Ltd.
    • Colin McHardy
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Quick-locking connector
    • Patent number 5,052,849
    • Issue date Oct 1, 1991
    • Petroline Wireline Services, Ltd.
    • Klaas Zwart
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Downhole lock assembly
    • Patent number 4,883,121
    • Issue date Nov 28, 1989
    • Petroline Wireline Services Limited
    • Klaas Zwart
    • E21 - EARTH DRILLING MINING