US STOCKS-Futures drop on China data, oil decline; data on tap
* China data disappoints
* Adobe up in premarket after results; to buy Fotolia
* PPI, UMich data on tap
* Futures off: Dow 85 pts, S&P 7.75 pts, Nasdaq 18 pts (Adds premarket actives)
By Chuck Mikolajczak
NEW YORK, Dec 12 (Reuters) - U.S. stock index futures fell on Friday, putting the benchmark S&P 500 on track to snap seven weeks of gains, after oil prices fell and Chinese data disappointed.
* The S&P index had snapped a three-day skid on Thursday, buoyed by upbeat retail sales figures and other data that pointed to a strengthening U.S. economy, but finished well off its session highs as oil prices slipped.
* Weak oil prices have added to worries about global demand and raised concerns about earnings for energy companies, with year-end tax selling putting more pressure on the group. The S&P energy sector has shed 14.7 percent this year and is the worst performing of the 10 major S&P sectors.
* Brent crude slipped to a low of $62.75, its lowest since July 2009, and was last down 0.6 percent at $63.30. WTI crude dropped below $60 a barrel and was last down 1 percent at $59.37 as worries persisted over a global supply glut and sluggish demand. The Select Sector Energy ETF was down 0.7 percent in premarket trade. Continuación...