| 摘要 |
A gas-liquid separator (19) is disclosed, in particular for separating free water at a downhole position of a gas well. The separator (19) comprises a centrifugal separator (37) within a tubular portion (23) defining a gas inlet (27) and a gas outlet (29). Upstream of the centrifugal separator (37), the tubular portion (23) is provided with a plurality of drain holes (47) through which free water which was centrifugated to the tubular portion (23) enters an annular duct (33) allowing the collected water to flow off due to gravity. Upstream of the drain holes (47), a jet pump (51) is arranged. The jet pump (51) is driven by the gas stream to create underpressure in the duct (33) and to suck back gas which has entered the annular duct (33) through the drain holes (47). The gas-liquid separator (19) has no moving parts and avoids monitoring or controlling of the separating process. |
