Hydraulic Setting Chamber Isolation Mechanism From Tubing Pressure During Production And Stimulation Of The Well

Abstract

Systems and methods of the present disclosure relate to isolating a setting chamber of an actuating assembly from tubing pressure. The actuating assembly comprises a cylinder; a mandrel disposed within the cylinder, the cylinder operable to move along the mandrel; a piston disposed between the cylinder and the mandrel, the piston operable to move along the mandrel in a direction opposite to that of the cylinder; a chamber disposed adjacent the piston, wherein the mandrel includes a port operable to allow fluid to pass into the chamber from the mandrel; and a spring disposed adjacent to the piston, the spring operable to expand, upon release of pressure from the chamber, to move the piston to seal the port and isolate the cylinder from pressure within the mandrel.

What is claimed is: 
     
         1 . An actuating assembly comprising:
 a cylinder;   a mandrel disposed within the cylinder, the cylinder operable to move along the mandrel;   a piston disposed between the cylinder and the mandrel, the piston operable to move along the mandrel in a direction opposite to that of the cylinder;   a chamber disposed adjacent to the piston, wherein the mandrel is operable to allow fluid to pass into the chamber from the mandrel; and   a spring disposed adjacent to the piston, the spring operable to expand, upon release of pressure from the chamber, to move the piston to seal the port and isolate the cylinder from pressure within the mandrel.   
     
     
         2 . The actuating assembly of  claim 1 , wherein the piston includes a seal. 
     
     
         3 . The actuating assembly of  claim 2 , further comprising a snap ring. 
     
     
         4 . The actuating assembly of  claim 3 , wherein the piston further comprises two additional seals adjacent to the snap ring. 
     
     
         5 . The actuating assembly of  claim 4 , wherein the mandrel includes a recess. 
     
     
         6 . The actuating assembly of  claim 5 , wherein the port is disposed in the recess. 
     
     
         7 . The actuating assembly of  claim 6 , wherein the snap ring is operable for disposal within the recess. 
     
     
         8 . The actuating assembly of  claim 1 , further comprising a shear member that secures the piston in place. 
     
     
         9 . The actuating assembly of  claim 8 , wherein the piston is operable to receive fluid pressure from the chamber to shear the shear member. 
     
     
         10 . The actuating assembly of  claim 1 , further comprising a stopper, wherein the spring is compressed between the piston and the stopper. 
     
     
         11 . The actuating assembly of  claim 10 , wherein the spring is operable to expand upon a reduction of pressure within the chamber. 
     
     
         12 . The actuating assembly of  claim 1 , wherein boundaries of the chamber are defined by at least the piston, the cylinder, and the mandrel. 
     
     
         13 . A method for actuating an actuating assembly, comprising:
 passing fluid into a chamber from a mandrel via a port;   moving a piston in a first axial direction to compress a spring while simultaneously moving a cylinder in an opposite direction;   compressing a spring disposed adjacent to the piston;   releasing pressure from the chamber to expand the spring to move the piston to close the port; and   isolating the cylinder from pressure within the mandrel.   
     
     
         14 . The method of  claim 13 , wherein releasing pressure from the chamber comprises releasing the fluid from the chamber. 
     
     
         15 . The method of  claim 13 , further comprising disposing a seal into the port. 
     
     
         16 . The method of  claim 15 , wherein disposing a seal into the port comprises disposing a snap ring into the port. 
     
     
         17 . The method of  claim 16 , further comprising shearing a shear member to release the piston. 
     
     
         18 . The method of  claim 17 , further comprising shearing the shear member due to pressure within the chamber. 
     
     
         19 . The method of  claim 13 , further comprising securing a snap ring into the port. 
     
     
         20 . The method of  claim 13 , further comprising moving the piston and the cylinder along the mandrel in axial directions.