Interventionless pinpoint completion and treatment

Abstract

A method of treating a subterranean formation is provided utilizing a system for setting downhole control pressure to select and operate hydraulically activated sleeve valves which are disposed on a casing which is cemented into a well bore, and flowing a first treatment fluid which is capable of dissolving cement through the hydraulically activated sleeve valves.

1 . A system for treating a subterranean formation, comprising:
 a well bore;   a casing within a portion of the well bore;   a cement in a portion of an annulus between the casing and the portion of the well bore;   a plurality of hydraulically activated sleeve valves connected to the casing;   a system for setting downhole control pressure for the plurality of hydraulically activated sleeve valves; and   a first treatment fluid which is capable of dissolving the cement.   
   
   
       2 . The system of  claim 1 , further comprising a second treatment fluid. 
   
   
       3 . The system of  claim 1 , wherein at least one of the plurality of hydraulically activated sleeve valves comprises a position indicator. 
   
   
       4 . The system of  claim 3 , wherein the position indicator comprises a pressure bypass conduit. 
   
   
       5 . The system of  claim 1 , wherein at least one of the plurality of hydraulically activated sleeve valves comprises a port alignment system. 
   
   
       6 . The system of  claim 1 , wherein the system for setting downhole control pressure comprises:
 a control module;   one or more control lines; and   a pressure control system.   
   
   
       7 . The system of  claim 6 , wherein:
 at least one of the one or more control lines is at least partially disposed in the annulus; and   the pressure control system is disposed external to the well bore.   
   
   
       8 . The system of  claim 1 , wherein the portion of the well bore is substantially horizontal. 
   
   
       9 . The system of  claim 1 , wherein:
 the first treatment fluid comprises an acid; and   the cement is acid-soluble.   
   
   
       10 . A system for treating a subterranean formation, comprising:
 a well bore, wherein:
 the well bore comprises:
 a substantially vertical portion; 
 a first substantially horizontal portion; and 
 a second substantially horizontal portion; 
 
 the substantially vertical portion forms a juncture with each of the first substantially horizontal portion and the second substantially horizontal portion; and 
 the juncture of the substantially vertical portion and the first substantially horizontal portion is physically distinct from the juncture of the vertical portion and the second substantially horizontal portion; 
   a first casing within a portion of the first substantially horizontal portion of the well bore;   a second casing within a portion of the second substantially horizontal portion of the well bore;   a first cement in a portion of an annulus between the first casing and the portion of the first substantially horizontal portion of the well bore;   a second cement in a portion of an annulus between the second casing and the portion of the second substantially horizontal portion of the well bore;   a first plurality of hydraulically activated sleeve valves connected to the first casing;   a second plurality of hydraulically activated sleeve valves connected to the second casing;   a system for setting downhole control pressure for each of the first plurality of hydraulically activated sleeve valves and second plurality of hydraulically activated sleeve valves; and   a first treatment fluid which is capable of dissolving the cement.   
   
   
       11 . A method for treating a subterranean formation, comprising:
 providing a casing in a well bore, wherein the casing comprises a plurality of hydraulically activated sleeve valves, at least one of which is connected to a system for setting downhole control pressure;   introducing cement into a portion of an annulus between the casing and the well bore;   utilizing the system for setting downhole control pressure to open at least one of the hydraulically activated sleeve valves; and   flowing a first treatment fluid which is capable of dissolving the cement through the at least one of the hydraulically activated sleeve valves.   
   
   
       12 . The method of  claim 10 , further comprising:
 utilizing the system for setting downhole pressure to selectively open or close two or more units of the plurality of hydraulically activated sleeve valves;   flowing a first treatment fluid which is capable of dissolving the cement through at least one of the selectively opened hydraulically activated sleeve valves; and   flowing a second treatment fluid through the at least one of the selectively opened hydraulically activated sleeve valves.   
   
   
       13 . The method of  claim 10 , wherein the system for setting downhole control pressure comprises:
 a control module;   one or more control lines; and   a pressure control system.   
   
   
       14 . The method of  claim 13 , wherein:
 at least one of the one or more control lines is at least partially disposed in the annulus; and   the pressure control system is disposed external to the well bore.   
   
   
       15 . The method of  claim 10 , wherein at least a portion of the well bore is substantially horizontal. 
   
   
       16 . The method of  claim 10 , wherein:
 the first treatment fluid comprises an acid; and   the cement is acid-soluble.   
   
   
       17 . The method of  claim 10 , wherein:
 at least one of the plurality of hydraulically activated sleeve valves comprises a position indicator;   the position indicator comprises a pressure bypass conduit; and   at least one of the plurality of hydraulically activated sleeve valves comprises a port alignment system.   
   
   
       18 . The method of  claim 10 , wherein the cement is introduced through at least a portion of an interior of the casing prior to being introduced into the annulus. 
   
   
       19 . The method of  claim 10 , wherein the cement is introduced into at least a portion of the annulus prior to being introduced into the interior of the casing. 
   
   
       20 . A method for treating a subterranean formation, comprising:
 providing a well bore, wherein:
 the well bore comprises:
 a substantially vertical portion; 
 a first substantially horizontal portion; and 
 a second substantially horizontal portion; 
 
 the substantially vertical portion forms a juncture with each of the first substantially horizontal portion and the second substantially horizontal portion; and 
 the juncture of the substantially vertical portion and the first substantially horizontal portion is physically distinct from the juncture of the vertical portion and the second substantially horizontal portion; 
   providing a first casing in the first substantially horizontal portion of the well bore, wherein the first casing comprises a first plurality of hydraulically activated sleeve valves, at least one of which is connected to a system for setting downhole control pressure;   providing a second casing in the second substantially horizontal portion of the well bore, wherein the second casing comprises a second plurality of hydraulically activated sleeve valves, at least one of which is connected to the system for setting downhole control pressure;   introducing cement into a portion of an annulus between the first casing and the first substantially horizontal section of the well bore;   introducing cement into a portion of an annulus between the second casing and the second substantially horizontal section of the well bore;   utilizing the system for setting downhole control pressure to selectively open or close at least one hydraulically activated sleeve valve in each of the first plurality of hydraulically activated sleeve valves and second plurality of hydraulically activated sleeve valves;   flowing a first treatment fluid which is capable of dissolving the cement through the at least one hydraulically activated sleeve valve in the first plurality of hydraulically activated sleeve valves; and   flowing the first treatment fluid through the at least one hydraulically activated sleeve valve in the second plurality of hydraulically activated sleeve valves.