实际流转的物质
Arab Light flows on its own, boils into useful products without cracking, and can be run by an ordinary refinery on any continent. Put next to the Venezuelan route, it shows how much of a supply chain is decided by chemistry rather than by policy.
- 材料
- Crude Oil
- 品种
- Light sour crude, roughly 33° API, moderate sulfur
- 起点
- Saudi Arabia — Ghawar and the eastern Saudi fields
逐步追踪，逐境跨越
Saudi Arabia · Eastern Province 持有方 Saudi Aramco (国有生产商)
Out of the reservoir under its own pressure
Conventional wells, with water injected to maintain reservoir pressure. The crude flows without heating or dilution.
为何选择此地: Same as anywhere: the oil is where the oil is.
Saudi Arabia · Abqaiq 持有方 Saudi Aramco (国有生产商)
Stabilisation, and nothing else
Gas and hydrogen sulfide are separated out and the crude is stabilised for shipping. No diluent, no upgrader, no coker.
其余部分的去向: The associated gas is not waste — it feeds the petrochemical industry and the power that runs the whole operation.
为何选择此地: Stabilisation always happens close to the field. That it is ALL that happens is the point of this journey.
Saudi Arabia · Ras Tanura 持有方 Shipowners and buyers (贸易商)
Straight onto a VLCC
Loaded and sailed. Most cargoes are sold on term contracts to refiners who have taken the same grade for decades.
为何选择此地: Ras Tanura is the outlet. The vulnerability of this journey is not the refinery — it is the 40 km-wide strait the tanker sails through.
South Korea · Ulsan, Rotterdam, Houston — the buyer's choice 持有方 Refiner (精炼商)
Any competent refinery will take it
Atmospheric distillation splits the barrel; a hydrotreater removes sulfur; a reformer raises the octane of the naphtha. No deep conversion is required.
其余部分的去向: Volume comes out slightly HIGHER than it went in — cracking and reforming produce lighter, less dense molecules. Refiners call it processing gain.
为何选择此地: Nowhere in particular, and that is the whole lesson: because the crude is easy, the buyer can be anyone.
South Korea · Refinery gate 持有方 Fuel and petrochemical buyers (制造商)
Fuel, and the feedstock for plastics
Petrol, diesel and jet fuel, plus naphtha that goes to a steam cracker to become ethylene and the plastics that follow from it.
为何选择此地: Refineries are built next to the demand, or next to a port that reaches it.
本文为示例演算，以公开的典型产率和回收率对既定起始量逐步推算，各比例可供核验；这不是某批具体货物的记录。路线事实——途经哪些国家、经历哪些工序，以及为何该材料不能在其他地方简单处理——均来源于公开报道。