Actuation assembly for an isolation valve

Abstract

An actuation assembly. The actuation assembly may include a housing, a mandrel disposed within the housing and shiftable within the housing to open and close an isolation valve, and a piston assembly disposed between the housing and the mandrel. The piston assembly may include a first hydraulic chamber fluidly couplable to a first trigger, a second hydraulic chamber fluidly couplable to the first trigger and a second trigger, a third hydraulic chamber fluidly couplable to the second trigger, a close collet piston positioned between the first hydraulic chamber and the second hydraulic chamber and close collet piston operable to shift the mandrel to close the isolation valve when the first trigger is activated, and an open collet piston positioned between the second hydraulic chamber and the third hydraulic chamber and open collet piston operable to shift the mandrel to open the isolation valve when the second trigger is activated.

What is claimed is: 
     
         1 . An actuation assembly for use with an isolation valve, the isolation valve comprising:
 an actuation housing;   a mandrel disposed within the actuation housing and shiftable within the housing to open and close the isolation valve; and   a piston assembly disposed between the housing and the mandrel, the piston assembly comprising;
 a first hydraulic chamber fluidly couplable to a first trigger; 
 a second hydraulic chamber fluidly couplable to the first trigger and a second trigger; 
 a third hydraulic chamber fluidly couplable to the second trigger; 
 a close collet piston positioned between the first hydraulic chamber and the second hydraulic chamber, the close collet piston operable to shift the mandrel to close the isolation valve when the first trigger is activated; and 
 an open collet piston positioned between the second hydraulic chamber and the third hydraulic chamber, the open collet piston operable to shift the mandrel to open the isolation valve when the second trigger is activated. 
   
     
     
         2 . The actuation assembly of  claim 1 , wherein the mandrel is coupled to the isolation valve via a mechanical linkage and the mandrel is shiftable to actuate the isolation valve. 
     
     
         3 . The actuation assembly of  claim 1 , wherein the actuation housing, the mandrel, and the close collet piston form the first hydraulic chamber;
 the actuation housing, the mandrel, the close collet piston, and the open collet piston form the second hydraulic chamber; and   the actuation housing, the mandrel, and the open collet piston form the third hydraulic chamber.   
     
     
         4 . The actuation assembly of  claim 1 , wherein the first hydraulic chamber and the second hydraulic chamber are in fluid communication via the first trigger; and wherein the second hydraulic chamber and the third hydraulic chamber are in fluid communication via the second trigger. 
     
     
         5 . The actuation assembly of  claim 1 , wherein the first trigger and second trigger may be electronic, mechanical, hydraulic, or any combination thereof. 
     
     
         6 . The actuation assembly of  claim 1 , wherein the actuation assembly shifts the isolation valve via the controlled signal applied from the surface or other suitable location. 
     
     
         7 . The actuation assembly of  claim 1 , wherein prior to after actuation, the mandrel can shift within the actuation housing to actuate the isolation valve by pulling up on and pushing down a well string coupled to the mandrel. 
     
     
         8 . The actuation assembly of  claim 1 , wherein the isolation valve is a ball valve element rotatably mounted in a ball section housing. 
     
     
         9 . A completion system comprising:
 a well string;   an isolation valve operatively coupled to the well string; and   an actuation assembly operatively coupled to the isolation valve, the actuation assembly comprising:
 a first trigger; 
 a second trigger 
 an actuation housing; 
 a mandrel disposed within the actuation housing and shiftable within the housing to open and close the isolation valve; and 
 a piston assembly disposed between the housing and the mandrel, the piston assembly comprising; 
 a first hydraulic chamber fluidly coupled to the first trigger; 
 a second hydraulic chamber fluidly coupled to the first trigger and the second trigger; 
 a third hydraulic chamber fluidly coupled to the second trigger; 
 a close collet piston positioned between the first hydraulic chamber and the second hydraulic chamber, the close collet piston operable to shift the mandrel and close the isolation valve when the first trigger is activated; and 
 an open collet piston positioned between the second hydraulic chamber and the third hydraulic chamber, the open collet piston operable to shift the mandrel and open the isolation valve when the second trigger is activated. 
   
     
     
         10 . The completion system of  claim 9 , wherein the mandrel is coupled to the isolation valve via a mechanical linkage and the mandrel is shiftable to actuate the isolation valve. 
     
     
         11 . The completion system of  claim 9 , wherein the actuation housing, the mandrel, and the close collet piston form the first hydraulic chamber;
 the actuation housing, the mandrel, the close collet piston, and the open collet piston form the second hydraulic chamber; and   the actuation housing, the mandrel, and the open collet piston form the third hydraulic chamber.   
     
     
         12 . The completion system of  claim 9 , wherein the first hydraulic chamber and the second hydraulic chamber are in fluid communication via the first trigger; and wherein the second hydraulic chamber and the third hydraulic chamber are in fluid communication via the second trigger. 
     
     
         13 . The completion system of  claim 9 , wherein the first trigger and second trigger may be electronic, mechanical, hydraulic, or any combination thereof. 
     
     
         14 . The completion system of  claim 9 , wherein the actuation assembly shifts the isolation valve via the controlled signal applied from the surface or other suitable location. 
     
     
         15 . The completion system of  claim 9 , wherein prior to after actuation, the mandrel can shift within the actuation housing to actuate the isolation valve by pulling up on and pushing down a well string coupled to the mandrel. 
     
     
         16 . The completion system of  claim 9 , wherein the isolation valve is a ball valve element rotatably mounted in a ball section housing. 
     
     
         17 . A method of producing a well comprising:
 running a well string comprising an isolation valve and an actuation assembly into the well;   activating a first trigger of the actuation assembly to shift a mandrel of the actuation assembly via a close collet piston of the actuation assembly positioned between a first hydraulic chamber of the actuation assembly and a second hydraulic chamber of the actuation assembly to close the isolation valve; and   activating a second trigger of the actuation assembly to shift the mandrel via an open collet piston of the actuation assembly positioned between the second hydraulic chamber and a third hydraulic chamber of the actuation assembly to open the isolation valve.   
     
     
         18 . The method of  claim 17 , wherein activating the first trigger of the actuation assembly comprising decoupling the first hydraulic chamber from the second hydraulic chamber;
 lowering the pressure within the first hydraulic chamber via the first trigger creating a differential pressure between the first hydraulic chamber and the second hydraulic chamber causing the close collet piston to shift the mandrel and close the isolation valve; and   wherein the close collet piston disengages from the mandrel after the mandrel has shifted and the isolation valve is closed.   
     
     
         19 . The method of  claim 17 , wherein activating the second trigger of the actuation assembly comprising decoupling the second hydraulic chamber from the third hydraulic chamber;
 lowering the pressure within the third hydraulic chamber via the second trigger creating a differential pressure between the second hydraulic chamber and the third hydraulic chamber causing the open collet piston to shift the mandrel and open the isolation valve; and   wherein the open collet piston disengages from the mandrel after the mandrel has shifted and the isolation valve is opened.   
     
     
         20 . The method of  claim 17 , wherein the first trigger and second trigger may be electronic, mechanical, hydraulic, or any combination thereof.