* OPEC faces challenge from lack of appetite for supply curbs
* Q3 EBIT adjusted for one-offs 1.84 bln euros vs f'cast 1.74 bln
BEIJING, Oct 24 - China's top diplomat will visit Vietnam next week, China said on Friday, five months after he last visited during a period of tension over a Chinese oil drilling rig working in part of the South China Sea both countries claim.
MOSCOW, Oct 24 - Russia's biggest oil producer Rosneft will continue drilling in the Arctic Kara Sea on its own after the departure of its partner, U.S. oil major ExxonMobil, due to sanctions, the company's head Igor Sechin said on Friday.
SINGAPORE, Oct 24 - Singapore, the world's biggest bunkering port, plans to end the so-called "cappucino effect" in ship fuelling through new meters designed to stop suppliers from short-changing customers, although the industry is warning of a short-term sales dip.
No related earnings announcements are currently scheduled within the next 7 days.