| 摘要 |
<p>The present invention is related in general to equipment for servicing subterranean wells. Particularly, the invention relates to a bottom cementing plug (10) that is equipped to activate autofill float equipment (1), and a method by which the plug is employed to activate autofill equipment. The bottom cementing plug contains an activation device (12) that is released when the plug lands on the autofill equipment, then enters the autofill equipment, triggering the activation of check valves (8,9). The activation device may also contain a chemical substance that is released into the well when the activation device exits the bottom cementing plug.</p> |
