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A hydraulically controlled packer for an oil or gas well is disclosed that is capable of being hydraulically unset. One embodiment of the invention is capable of being hydraulically unset prior to locking thus allowing fine tuning of packer location in relation to oil-bearing strata. Other embodimen...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: ROGER DALE LACY, JOHN HUGHES, BILLY RAY NEWMAN
Format: Patent
Sprache:por
Schlagworte:
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