| 摘要 |
<p>The present invention relates to a method and an apparatus to investigate and quantify a leakage rate for a fluid (FG, FL) between a first pipe (5) and a second pipe (7), the first pipe (5) being surrounded by at least a portion of the second pipe (7), where the pipes (5, 7) are arranged in a well (1) in a ground and where a measuring arrangement (20) including a flow meter (24) and a pressure meter (26) is put into fluid communication with an annulus (B) defined by the first pipe (5) and the second pipe (7), where fluid (FG) in the gaseous phase is conveyed through the measuring arrangement, as the annulus (B) is used as a separation chamber for gas (FG) and liquid (FL).</p> |
