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drilling or converting a well for the injection of water or gas to assist in the recovery of petroleum or natural gas from another well; (frais d’exploration ou de forage)
drilling or converting a well for the injection of water or gas to assist in the recovery of petroleum or natural gas from another well; (frais d’exploration ou de forage)
drilling or converting a well for the injection of water or gas to assist in the recovery of petroleum or natural gas from another well;