Supply of the five North Sea crude oil grades underpinning the dated Brent benchmark will average about 542,000 barrels per day in October, compared to 536,000 bpd in September, loading programmes showed.

Brent, Forties, Oseberg, Ekofisk and Troll are the five North Sea grades underpinning the dated Brent benchmark. U.S. WTI Midland crude, which is also part of the benchmark, does not have a loading programme.
Source: Reuters