Magnetically Initiated Actuation Mechanism

Abstract

The present invention provides a mechanism to remotely initiate actuation of a device positioned in a borehole. The disclosure includes a magnetically initiated actuation mechanism.

1 . A magnetically initiated actuation mechanism, comprising:
 a first assembly comprising a plurality of electromagnetic sensors disposed within a tubular; and   a second assembly comprising a means for generating magnetic fields,   wherein said second assembly is configured such that it can be conveyed through said tubular;   wherein the means for generating magnetic fields are configured such that the means for generating magnetic fields align with the electromagnetic sensors when the second assembly is conveyed to a point within the tubular containing the electromagnetic sensors;   wherein the electromagnetic sensors are configured to detect at least one of presence and absence of said magnetic fields; and   wherein the electromagnetic sensors are further configured to initiate activation of an associated actuator.   
     
     
         2 . The magnetically initiated actuation mechanism of  claim 1 , wherein the actuator is configured to engage at least one of a hydrostatic valve, battery operated motor, explosive, and incendiary device. 
     
     
         3 . The magnetically initiated actuation mechanism of  claim 1 , further comprising, additional sensors capable of sensing at least one of pressure, temperature, vibration, and flow rates. 
     
     
         4 . The magnetically initiated actuation mechanism of  claim 1 , wherein the means for generating magnetic fields are a series of permanent magnets. 
     
     
         5 . A method of initiating down-hole actuation, comprising:
 incorporating electromagnetic sensors in tubing of a borehole;   incorporating a means of generating magnetic fields into a second device configured to be passed through the tubing of the borehole; and   initiating the down-hole actuation when the means of generating magnetic fields is aligned with the electromagnetic sensors;   wherein the electromagnetic sensors are configured to initiate activation of an associated actuator.