Patent ID: 9683419
Date: 2017-06-20
CPC Classifications: E21B

Claim:
1. An actuation dart for actuating a target tool in a tubing string, the actuation dart comprising: a body conveyable through the tubing string to reach the target tool; a control module configured to locate the target tool, the control module further comprising: an actuation mechanism for actuating the target tool when the target tool is located, the actuation mechanism comprising annular protrusions adapted to be depressed as the actuation dart passes through one or more seats in the tubing string, wherein at least one of the annular protrusions is adapted to be depressed to cause the proximity sensor to generate the one or more output signals, wherein the actuation dart is configurable in an inactive configuration in which the annular protrusions are depressible and an active configuration in which the annular protrusions are prevented from being depressed such that the annular protrusions form a no-go shoulder adapted to engage the target tool.