Opening a casing with a hydraulic-powered setting tool

Abstract

A setting tool ( 400 ) for opening and closing a sleeve ( 210 ) inside a casing ( 200 ) includes a body ( 402 ) extending along a central longitudinal axis (X); a set of holding dogs ( 420 ) located around the body ( 402 ); and a set of sleeve dogs ( 430 ) located around the body ( 402 ). The set of sleeve dogs ( 430 ) are configured to move along the central longitudinal axis (X) relative to the set of holding dogs ( 420 ).

What is claimed is: 
     
         1 . A setting tool ( 400 ) for opening and closing a sleeve ( 210 ) inside a casing ( 200 ), the setting tool ( 400 ) comprising:
 a body ( 402 ) extending along a central longitudinal axis (X);   a set of holding dogs ( 420 ) located around the body ( 402 ); and   a set of sleeve dogs ( 430 ) located around the body ( 402 ),   wherein the set of sleeve dogs ( 430 ) are configured to move along the central longitudinal axis (X) relative to the set of holding dogs ( 420 ).   
     
     
         2 . The setting tool of  claim 1 , further comprising:
 a holding ram ( 422 ) configured to slid under the set of holding dogs ( 420 ) to move the holding dogs radially away from the central longitudinal axis.   
     
     
         3 . The setting tool of  claim 2 , further comprising:
 a holding piston ( 424 ) located inside the body and configured to move the holding ram along the central longitudinal axis.   
     
     
         4 . The setting tool of  claim 1 , further comprising:
 a sleeve ram ( 432 ) configured to slid under the set of sleeve dogs ( 430 ) to move the sleeve dogs radially away from the central longitudinal axis.   
     
     
         5 . The setting tool of  claim 4 , further comprising:
 a first sleeve piston ( 434 ) located inside the body and configured to move the sleeve ram along the central longitudinal axis relative to the set of sleeve dogs.   
     
     
         6 . The setting tool of  claim 5 , further comprising:
 a second sleeve piston ( 438 ) located inside the body and configured to move the sleeve ram together with the set of sleeve dogs along the central longitudinal axis to open or close the sleeve.   
     
     
         7 . The setting tool of  claim 1 , further comprising:
 a seal ( 440 ) located around the body ( 402 ) and configured to seal an inside of the casing so that a fracturing fluid reaches the set of sleeve dogs and the set of holding dogs but not an adjacent casing located downstream from the current casing.   
     
     
         8 . The setting tool of  claim 1 , further comprising:
 an accumulator ( 480 ) that stores fluid under pressure and is configured to actuate a holding piston, a first sleeve piston and a second sleeve piston for moving the set of holding dogs and the set of sleeve dogs.   
     
     
         9 . The setting tool of  claim 8 , wherein the holding piston, the first sleeve piston and the second sleeve piston are concentric to each other. 
     
     
         10 . The setting tool of  claim 1 , further comprising:
 a hydraulic valve block ( 406 ) that includes plural valves for controlling a movement of a holding piston, a first sleeve piston and a second sleeve piston.   
     
     
         11 . The setting tool of  claim 10 , wherein the hydraulic valve block includes solenoids. 
     
     
         12 . The setting tool of  claim 11 , wherein the hydraulic valve block includes batteries for actuating the solenoids and a controller for controlling the solenoids. 
     
     
         13 . The setting tool of  claim 12 , further comprising:
 an electronic module that includes a velocity sensor and a pressure transducer.   
     
     
         14 . The setting tool of  claim 13 , further comprising:
 a fishing neck so that a retrieving tool connects to the fishing neck for retrieving the setting tool from the well.   
     
     
         15 . A system ( 200 ,  400 ) for fracturing a well, the system comprising:
 a casing ( 200 ) having plural openings ( 212 ) that are covered by a sleeve ( 210 ) when the sleeve is in a close position; and   a setting tool ( 400 ) configured to open the sleeve ( 210 ) for fracturing operations,   wherein the setting tool ( 400 ) includes,   a body ( 402 ) extending along a central longitudinal axis (X),   a set of holding dogs ( 420 ) located around the body ( 402 ), and   a set of sleeve dogs ( 430 ) located around the body ( 402 ),   wherein the set of sleeve dogs ( 430 ) are configured to move along the central longitudinal axis (X) relative to the set of holding dogs ( 420 ).   
     
     
         16 . The system of  claim 15 , wherein the setting tool further comprises:
 a holding ram ( 422 ) configured to slid under the set of holding dogs ( 420 ) to move the holding dogs radially away from the central longitudinal axis.   
     
     
         17 . The system of  claim 16 , wherein the setting tool further comprises:
 a holding piston ( 424 ) located inside the body and configured to move the holding ram along the central longitudinal axis.   
     
     
         18 . The system of  claim 15 , wherein the setting tool further comprises:
 a sleeve ram ( 432 ) configured to slid under the set of sleeve dogs ( 430 ) to move the sleeve dogs radially away from the central longitudinal axis.   
     
     
         19 . The system of  claim 18 , wherein the setting tool further comprises:
 a first sleeve piston ( 434 ) located inside the body and configured to move the sleeve ram along the central longitudinal axis relative to the set of sleeve dogs.   
     
     
         20 . The system of  claim 19 , wherein the setting tool further comprises:
 a second sleeve piston ( 438 ) located inside the body and configured to move the sleeve ram together with the set of sleeve dogs along the central longitudinal axis to open or close the sleeve.