Quote from rubibond007:
the contract is not physical. It is cash settled as delivery can not be made for the standard contract volume in what is a cargo and not a pipeline market. In the USA, the futures market has supplanted the informal forward market. For Brent, the two markets are complementary, in that the futures market relies on the forward market to provide a physical grounding through the construction of the IPE index. In general terms, the futures markets set the level of prices, and the physical markets set the differentials.
In the USA, the near month NYMEX contract is as close as one can practically get to spot pipeline crude oil, given the logistics of pipeline scheduling. In that sense, there is no such thing as dated WTI. In Brent of course there is the problem of dated Brent. The Platt's quote for dated Brent directly or indirectly prices about two-thirds of all oil moving in international trade. Yet dated Brent is prone to chronic distortions: there is little reported trade, no trade in absolute prices as opposed to a differential, and the quote is leveraged by CFD market activity. One can not get away from the fact that the quote is often manipulated.
The logic of using dated Brent as an index is that with delayed pricing from time of loading, it guarantees competitiveness of long haul crude oil with short haul at the time of delivery to Europe. Moving away from this reduces that competitiveness, as the basis risk between futures and spot can be significant. On the other hand, if dated Brent is prone to wander off on its own due to distortions, then its use does not exactly pick up true spot values, and leaves both producers and refiners prone to frequent annoyance and discontent.
I am always perplexed when significant emergin markets sovereign funds distort the physical Brent market through a deliberate trading strategy. Perhaps the idea of trading as an independent and separate profit centre has just gone too far in some modern state owned corporations.