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Forage manuel a la percussion PRACTICA - Practica Foundation

Forage manuel a la percussion PRACTICA - Practica Foundation

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LA PERCUSSION - Module 2 - Utilisation de <strong>la</strong> technique a <strong>la</strong> <strong>percussion</strong><br />

Demandez aux manœuvres encore un peu plus de mou sur<br />

<strong>la</strong> corde et faites pivoter le haut de <strong>la</strong> tarière par dessus<br />

<strong>la</strong> roche.<br />

Laissez le haut de <strong>la</strong> tarière se poser sur le sol et<br />

ouvrez <strong>la</strong> valve de fond pour garantir <strong>la</strong> bonne<br />

évacuation des cuttings (ce<strong>la</strong> permet aussi de<br />

vérifier que <strong>la</strong> valve n’est pas bloquée).<br />

36<br />

Fondation <strong>PRACTICA</strong> - Série forage <strong>manuel</strong>

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