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drilling or converting a well in Canada for the injection of water, gas or any other substance to assist in the recovery of petroleum or natural gas from another well,
drilling or converting a well in Canada for the injection of water, gas or any other substance to assist in the recovery of petroleum or natural gas from another well,
drilling or converting a well in Canada for the injection of water, gas or any other substance to assist in the recovery of petroleum or natural gas from another well,