Sept 29 (Reuters) - Oil prices fell on Thursday after gaining more than $3 in the prior session, with a strong dollar capping oil demand and concerns over the faltering global economic outlook clouding market sentiment. Register now for FREE unlimited access to Reuters.com RegisterHowever, the dollar index trended upward again on Thursday, dampening investor risk appetite and stoking fears of a global recession. Goldman Sachs cut its 2023 oil price forecast on Tuesday, citing expectations of weaker demand and a stronger U.S. dollar, but said global supply disappointments reinforced its long-term bullish outlook. Citi economists have lowered their China GDP forecast from 5% year-on-year growth to 4.6% for the fourth quarter of 2022. "Stringent zero-COVID measures and a weak property sector continue to cloud growth prospects," Citi analysts wrote in a note on Wednesday.

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