Schlumberger Ltd, the world's largest oilfield services company, said oil and gas spending would increase in 2015 as global oil demand is poised to rise, downplaying fears of an investment slowdown due to weak crude prices.

The Brent-WTI spread, the difference between the front month futures price of North Sea Brent crude oil and that of West Texas Intermediate (WTI) crude oil, narrowed to $2.00 per barrel (bbl) as of October 15, after reaching a 2014 high of $14.95/bbl in January

Oil prices posted their biggest one-day drop in nearly two years Tuesday as a U.S.-led wave of crude has crashed into weak global demand, threatening the stability of some countries and providing an economic lifeline to others.

Bank of America Corp. and BNP Paribas SA predict prices will hold above $80 a barrel. Commerzbank AG also sees that level as a possible low for Brent crude. They’re in part counting on OPEC cutting output -- some say as soon as next month -- to compensate for recent declines in demand.

OPEC is resisting pressure to cut oil production while demand slumps as it tests how low prices must go to make U.S. shale oil unprofitable. As producers become more efficient, that floor is sinking.

Saudi Arabia effectively started a global oil price war this month aimed at quickly denting U.S. oil output. Slowing a U.S. drilling boom, however, could take more than a year.

The IEA Oil Market Report (OMR) for October reduced its forecast of global oil demand for 2014 by 0.2 million barrels per day (mb/d) from the previous month, to 92.4 mb/d, on lower expectations of economic growth and the weak recent trend. Annual demand growth for 2014 is now projected at 0.7 mb/d, rising tentatively to 1.1 mb/d in 2015 as the macroeconomic backdrop improves.

Two of OPEC’s biggest members say they won’t immediately reduce oil production to offset tumbling prices, a signal the group is unlikely to heed Venezuelan calls for an emergency meeting.

OAO Gazprom said profit for the first half of the year fell by almost one-quarter as Ukraine's Naftogaz didn't pay for gas supplied by the Russian state-controlled gas group.

The OPEC Reference Basket fell $4.77 to stand at $95.98/b in September, as sluggish demand and ample supply continue to weight on the oil market.