The expression from Text II upstream, midstream and downs...

A oil transportation by boat against water flow / oil storing in the middle of the river journey / oil transportation by boat following water flow. B oil transportation by boat following water flow / oil storing in the middle of the river journey / oil transportation by boat against water flow. C oil exploration and production / oil processing, storing, transporting and marketing / oil operations after the production phase through to the point of sale. D oil exploration and production / oil operations after the production phase through to the point of sale / oil processing, storing, transporting and marketing. E oil processing, storing, transporting and marketing / oil exploration and production / oil operations after the production phase through to the point of sale.