| 摘要 |
<p>The invention relates to a method of testing a well, comprising the steps of: - providing a pipe string with a tester valve assembly adapted to allow or prevent fluid flow from an isolated lower interval of the well into the pipe string, said tester valve assembly comprising a valve element movable between a closing and an opening position, said valve element being in a predetermined initial position ; - suspending from a cable inside the pipe string a measurement assembly including sensor means, and lowering said measurement assembly into engagement with valve actuating means of the tester valve assembly, the arrangement being such that said sensor means is exposed to the fluid of said interval as a result of said engagement, irrespective of the position of the valve element; - exerting a succession of tensions and releases on the cable to operate said valve actuating means, said succession effecting successive changes in the position of the valve element, while measuring by said sensor means the modifications of fluid condition in said interval resulting from the operation of the valve element; and - releasing the measurement assembly from said valve actuat ing means upon completion of a predetermined cycle of tensions and releases exerted on said cable, the tensions within said cycle being lower than the tension to be exerted for actuating the valve element.</p> |
