| 摘要 |
<p>Parameters of hydrocarbon-bearing well fluid sample are measured while the sample is still in place in a well (10) and at downhole pressure and temperature conditions, by lowering a tool (18) into the well (10) to a downhole location. A well fluid sample is trapped in the tool (18) at the downhole location. While the tool (18) remains within the well, the volume of the well fluid sample is expanded while repeatedly measuring the pressure of the trapped well fluid sample at different volumes and thereby generating pressure versus volume data for the trapped well fluid sample. From this data, various parameters such as bubble-point pressure and compressibility of the sample can be readily obtained. After each sample is tested, it is expelled from the tool so that another sample can be taken. The data can be stored for subsequent analysis at the surface or it can be transmitted to the surface for real time analysis. <IMAGE></p> |
