Oil futures prices extended their losing streak on Friday, falling in tandem with equity markets, as a key refinery outage in the U.S. was expected to weigh on commercial crude-oil demand. Light, sweet crude for September delivery fell 29 cents, or 0.3%, in price to $97.88 a barrel on the New York Mercantile Exchange, the lowest closing price since Feb. 6. The global Brent crude-oil contract fell $1.18, or 1.1%, to settle at $104.84 a barrel on the ICE Futures Europe exchange. It was the fifth-consecutive losing session for Nymex crude and the fourth in a row for Brent. Friday’s losses prolonged a six-week slump for crude-oil prices, which fell 6.8% on the Nymex and 5.6% on ICE in July. Analysts and traders said a host of factors were at work in pressuring down prices, from logistical hiccups in the pipeline and refinery system that would […]