High pressure environment pressure actuation system

Abstract

An actuation system for a downhole tool includes a first pressure compensated chamber receptive of a first chemical therein. A second pressure compensated chamber receptive of a second chemical therein. A pressure actuated trigger having a first position wherein the first and second chambers are segregated from each other and a second position wherein the first and second chemicals are no longer segregated from one another.

What is claimed is: 
     
         1 . An actuation system for a downhole tool comprising:
 a first pressure compensated chamber receptive of a first chemical therein;   a second pressure compensated chamber receptive of a second chemical therein;   a pressure actuated trigger having a first position wherein the first and second chambers are segregated from each other and a second position wherein the first and second chemicals are no longer segregated from one another.   
     
     
         2 . An actuation system for a downhole tool as claimed in  claim 1  wherein the first and second pressure compensated chambers are volume changeable in response to ambient pressure, thereby changing pressure within the pressure compensated chambers. 
     
     
         3 . An actuation system for a downhole tool as claimed in  claim 1  wherein the first and second pressure compensated chambers are at atmospheric pressure prior to running of the system into a borehole. 
     
     
         4 . An actuation system for a downhole tool as claimed in  claim 1  wherein the first and second pressure compensated chambers are segregated by an isolator and a prong in sealed connection therewith. 
     
     
         5 . An actuation system for a downhole tool as claimed in  claim 4  further including a trigger body in operable communication with the prong. 
     
     
         6 . An actuation system for a downhole tool as claimed in  claim 5  further including a setting piston in operable communication with the prong. 
     
     
         7 . An actuation system for a downhole tool as claimed in  claim 6  wherein all claimed components are disposed within an annular space between a body and an outer housing of the system. 
     
     
         8 . An actuation system comprising:
 a body;   an outer housing connected to the body and creating an annular space between the body and the outer housing;   a trigger body disposed within the space and exposed to ambient pressure at one end thereof;   an isolator spaced from the trigger body within the annular space to create a pressure compensated chamber;   a setting piston spaced from the isolator within the annular space to create a pressure compensated chamber;   a prong extending from the setting piston through the isolator to the trigger body, the prong being in sealed relationship with each in a first position.   
     
     
         9 . An actuation system as claimed in  claim 8  wherein the trigger body further includes a defeatable member. 
     
     
         10 . An actuation system as claimed in  claim 9  wherein the defeatable member is pressure defeatable. 
     
     
         11 . An actuation system as claimed in  claim 8  wherein the trigger body, the isolator and the setting piston are movable within the annular space to change a volume of the pressure compensated chambers based upon ambient pressure on the system. 
     
     
         12 . An actuation system comprising:
 a chemical based force generator;   a pressure based trigger for the chemical based generator in operable communication with the chemical based generator.   
     
     
         13 . An actuation system as claimed in  claim 12  wherein the chemical based generator includes a plurality of pressure compensated chambers that are segregated until the pressure based trigger is triggered. 
     
     
         14 . An actuation system as claimed in  claim 13  wherein the pressure based trigger upon being triggered communicates the plurality of chambers allowing a chemical reaction that results in the generation of an actuation force. 
     
     
         15 . An actuation system as claimed in  claim 12  wherein the chemical based generator includes hydrogen peroxide and a catalyst such as iron chloride or potassium iodide.