| 摘要 |
<p>A temporary no-go assembly (500) for use in locating a downhole tool at a predetermined target depth in a casing (104) having a landing nipple, comprises a key (560) for engaging the nipple, and a key retractor (558) for retracting the key from the nipple. An independent claim is also included for locating a downhole tool at a predetermined target depth in a well, comprising forming a landing nipple in a casing; coupling a downhole tool, an anchoring system, and a temporary no-go assembly to a work string; and running the work string into the casing until the key engages the nipple.</p> |
