It’s so long ago.
Venezuela's oil is also of poorer quality than its Saudi equivalent. Its sour, heavy crude is difficult to extract and refine, while its high sulphur content makes it corrosive to pipelines. A resurgence of Venezuela's industry could pose problems for Canada, which produces similarly viscous oil and exports much of it to the US, but analysts reckon the risk is minor.
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非经国务院交通运输主管部门依法批准，外国籍船舶不得经营中华人民共和国港口之间的海上运输和拖航。