| 摘要 |
<p>A non-flashing fluid sampler (10) for use in obtaining a well fluid sample. The sampler comprises a body (28) defining a first chamber (214), a second chamber (210), a third chamber (208) and a sampling port (154) therein. The sampling port (154) is in communication with the first chamber (214) and with an outside zone outside the body (28). The second and third chambers (210, 208) are initially isolated from one another by a control valve (128). Upon activating the control valve (128), fluid may flow from the second chamber (210) to the third chamber (208) through a flow restriction. An extendable floating piston (180) is disposed between the first and second chambers (214, 210), and the floating piston (180) defines a variable volume therein. An initial amount of well fluid flows into the variable volume, thus trapping dirty fluid, and subsequently, a well fluid sample is flowed into the first chamber (214). <IMAGE> <IMAGE></p> |
