Device for use in a fluid exploitation well, exploitation...

Details Device for use in a fluid exploitation well, exploitation... Device for use in a fluid exploitation well, exploitation...

E - Fixed Constructions

21

B

E21B 19/08 (2006.01) B66D 1/44 (2006.01) E21B 23/14 (2006.01)

Patent

CA 2757389

The invention relates to a device including a cable working line having a turnaround and a drawworks for the line. The hydraulic system (46) for the drawworks comprises a tank (50) for storing hydraulic control fluid, a pump (52) for driving the hydraulic fluid and connected to the tank (50) by an upstream pipe (54), and at least one hydraulic motor (56) for driving the drum (42) connected to the pump (52) by an intermediate pipe and connected to the tank (50) by a downstream pipe. The hydraulic system includes a flow regulator (62) for the hydraulic fluid at the outlet of the pump (52). The regulator (62) is controlled on the basis of at least one pressure of the hydraulic fluid depending on the load exerted on the motor (56) by the rotary drum (42), the pressure(s) being taken directly from one of said pipes.

Ce dispositif comprend une ligne de travail au câble portant une navette et un treuil de manoeuvre de la ligne. La centrale hydraulique (46) du treuil comporte une bâche (50) de stockage d'un fluide hydraulique de commande, une pompe (52) d'entraînement du fluide hydraulique, raccordée à la bâche (50) par une conduite amont (54), et au moins un moteur hydraulique (56) d'entraînement du tambour (42) raccordé à la pompe (52) par une conduite intermédiaire et raccordé à la bâche (50) par une conduite aval. La centrale hydraulique comprend un régulateur (62) du débit de fluide hydraulique en sortie de la pompe (52). Le régulateur (62) est piloté en fonction d'au moins une pression de fluide hydraulique dépendant de la charge exercée sur le moteur (56) par le tambour (42) rotatif, la ou chaque pression étant prise directement sur l'une desdites conduites.

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