Abstract: A gas-liquid separator separates free water at a downhole position of a gas well. The separator includes a centrifugal separator within a tubular portion defining a gas inlet and a gas outlet. Upstream of the centrifugal separator, the tubular portion is provided with a plurality of drain holes through which free water which was centrifugated to the tubular portion enters an annular duct allowing the collected water to flow off due to gravity. Upstream of the drain holes, a jet pump is arranged. The jet pump is driven by the gas stream to create underpressure in the duct and to suck back gas which has entered the annular duct through the drain holes. The gas-liquid separator has no moving parts and avoids monitoring or controlling of the separating process.