Fracturing isolation sleeve

1. An apparatus adapted to be operatively coupled to a well having a production casing positioned therein, the apparatus comprising:

a first device having an internal bore;

a second device having an internal bore; and

a fracture isolation sleeve disposed at least partially within said internal bores of said first and second devices, said fracture isolation sleeve having an internal diameter that is greater than or equal to an internal diameter of said production casing, wherein said fracture isolation sleeve is adapted to be retrievable through at least one device positioned above said first device, wherein said at least one device is a fracturing system positioned above said well that comprises a valve that is adapted to control a flow of a fracturing fluid through said fracture isolation sleeve, said fracture isolation sleeve being adapted to be retrieved through said valve.

2. The apparatus of claim 1 , wherein said first device comprises at least one of an adapter and a Christmas tree.

3. The apparatus of claim 1 , wherein said second device comprises a tubing head.

4. The apparatus of claim 1 , wherein said second device is a tubing head.

5. A fracture isolation sleeve adapted to be positioned in a well having a production casing positioned therein, comprising:

a body adapted to be positioned at least partially within an internal bore of each of two well components, said body having an internal diameter that is greater than or equal to an internal diameter of said production casing in said well, a profile formed in an outer surface of said body, wherein said profile is adapted to be engaged to secure said body in an operational position and wherein said body is adapted to be retrievable through a valve of a fracturing system positioned above said well while said fracturing system is exposed to an existing pressure in said well, wherein said valve is adapted to control a flow of a fracturing fluid through said body during fracturing operations.

6. The fracture isolation sleeve of claim 5 , further comprising a profile formed in an interior surface of said body for securing a pressure barrier device to be positioned within said body against downhole pressure within said well.

7. The fracture isolation sleeve of claim 6 , wherein said pressure barrier device comprises at least one of a check valve, a back pressure valve and a test plug.

8. The fracture isolation sleeve of claim 5 , wherein said fracture isolation sleeve is further adapted to be installed through said fracturing system.

9. An apparatus adapted to be operatively coupled to a well having a production casing positioned therein, the apparatus comprising:

an adapter having an internal bore;

a fracturing system positioned above said adapter;

a tubing head having an internal bore; and

a fracture isolation sleeve disposed at least partially within said internal bores of said adapter and said tubing head, said fracture isolation sleeve having an internal diameter that is greater than or equal to an internal diameter of said production casing, wherein said fracturing system comprises a valve that is adapted to control a flow of a fracturing fluid through said fracture isolation sleeve and wherein said fracture isolation sleeve is adapted to be retrievable through said valve in said fracturing system while said fracturing system is exposed to an existing pressure in said well.

10. The apparatus of claim 9 , wherein said fracture isolation sleeve is further adapted to be installed through said valve in said fracturing system.

11. An apparatus adapted to be operatively coupled to a well having a production casing positioned therein, the apparatus comprising:

an adapter having an internal bore;

a fracturing system positioned above said adapter;

a tubing head having an internal bore;

a fracture isolation sleeve disposed at least partially within said internal bores of said adapter and said tubing head, said fracture isolation sleeve having an internal diameter that is greater than or equal to an internal diameter of said production casing, wherein said fracturing system comprises a valve that is adapted to control a flow of a fracturing fluid through said fracture isolation sleeve and wherein said fracture isolation sleeve is adapted to be retrievable through said valve in said fracturing system while said fracturing system is exposed to an existing pressure in said well; and

a profile formed in an interior surface of said body for securing a pressure barrier device to be positioned within said body against downhole pressure within said well.

12. The apparatus of claim 11 , wherein said pressure barrier device comprises at least one of a check valve, a back pressure valve and a test plug.

13. An apparatus adapted to be operatively coupled to a well having a production casing positioned therein, the apparatus comprising:

a first device having an internal bore;

a second device having an internal bore, wherein said first device is a fracturing master valve and said second device is a tubing head; and

a fracture isolation sleeve disposed at least partially within said internal bores of said first and second devices, said fracture isolation sleeve having an internal diameter that is greater than or equal to an internal diameter of said production casing, wherein said fracture isolation sleeve is adapted to be retrievable through said fracturing master valve.

14. The apparatus of claim 13 , wherein said fracture isolation sleeve is further adapted to be installed through said fracturing system and said fracturing master valve.

15. An apparatus adapted to be operatively coupled to a well having a production casing positioned therein, the apparatus comprising:

a first device having an internal bore;

a second device having an internal bore, wherein said first device is a fracturing master valve and said second device is a tubing head;

a fracture isolation sleeve disposed at least partially within said internal bores of said first and second devices, said fracture isolation sleeve having an internal diameter that is greater than or equal to an internal diameter of said production casing, wherein said fracture isolation sleeve is adapted to be retrievable through at least one device positioned above said first device; and

a profile formed in an interior surface of said body for engaging a pressure barrier device to be positioned within said fracture isolation sleeve against downhole pressure within said well.

16. The apparatus of claim 15 , wherein said pressure barrier device comprises at least one of a check valve, a back pressure valve and a test plug.

17. An apparatus adapted to be operatively coupled to a well having a production casing positioned therein, the apparatus comprising:

a first device having an internal bore;

a second device having an internal bore;

a fracture isolation sleeve disposed at least partially within said internal bores of said first and second devices, said fracture isolation sleeve having an internal diameter that is greater than or equal to an internal diameter of said production casing, wherein said fracture isolation sleeve is adapted to be retrievable through at least one device positioned above said first device, wherein said at least one device is a fracturing system positioned above said well; and

a profile formed in an interior surface of said body for securing a pressure barrier device to be positioned within said body against downhole pressure within said well.

18. The apparatus of claim 17 , wherein said pressure barrier device comprises at least one of a check valve, a back pressure valve and a test plug.