RIYADH, Dec 7 (Reuters) - Saudi Arabia expects to post a second consecutive budget surplus in 2023, though down 84% from this year as an uncertain global economic outlook and lower crude prices look set to weigh on the top oil exporter's revenues. Spending is slightly lower than 1.132 trillion riyals this year. Revenues are expected at 1.13 trillion riyals, down from 1.234 trillion riyals in 2022 as oil prices are seen falling from this year's high levels. Public debt is seen falling 3.5% to 951 billion riyals next year, or 24.6% of GDP. Government reserves at the Saudi Central Bank are estimated to reach 399 billion riyals at the end of next year, the finance ministry said.

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