Methods and systems for creating an interventionless conduit to formation in wells with cased hole

1. A casing disconnecting tool comprising:

an upper body;

a lower body;

a temporary coupling mechanism configured to selectively couple the upper body and the lower body, wherein when the temporary coupling mechanism is coupling the upper body and the lower body the lower body is partially encompassed by the upper body;

a chamber positioned between the upper body and the lower body configured to aid in creating a force to eject portions of the lower body from the upper body responsive to shearing the temporary coupling mechanism, wherein the chamber is an atmospheric chamber before the shearing of the temporary coupling mechanism.

2. The tool of claim 1 , wherein the entirety of the lower body is ejected from the upper body responsive to shearing the temporary coupling mechanism.

3. The tool of claim 1 , wherein a proximal end of the lower body is encompassed by the upper body after the chamber creates the aided force to eject portions of the lower body from the upper body.

4. The tool of claim 1 , wherein a lower body distal end projects away from an upper body distal end when the temporary coupling mechanism is coupling the upper body from the lower body.

5. The tool of claim 1 , further comprising:

ports positioned through the lower body, the ports being configured to create dynamic openings allowing communication into the geological formation based on a change to a relative positioning of the lower body and the upper body caused by the aided force created by the chamber.

6. The tool of claim 5 , wherein the ports are completely exposed to the geological formation after the portions of the lower body are ejected from the upper body.

7. The tool of claim 1 , wherein cement is configured to be pumped through the lower body before the chamber creates the aided force.

8. The tool of claim 1 , further comprising:

a rupture disc configured to seal the chamber, wherein the chamber is configured to increase a piston area acting upon the lower body responsive to the rupture disc being removed, wherein when the rupture disc is intact the rupture disc is positioned between a proximal end of the lower body and the temporary coupling mechanism.

9. A method for a casing disconnecting tool comprising:

temporarily coupling an upper body and a lower body at a first location, wherein when the upper body is coupled to the lower body then the lower body is partially encompassed by the upper body;

creating a force within a chamber to decouple the upper body and the lower body at the first location, the chamber being positioned between the upper body and the lower body, wherein the chamber is an atmospheric chamber before the shearing of the temporary coupling mechanism;

ejecting portions of the lower body from the upper body responsive to decoupling the upper body from the lower body at the first location.

10. The method of claim 9 , further comprising:

ejecting the entirety of the lower body from the upper body responsive to decoupling the upper body and the lower body at the first location.

11. The method of claim 9 , wherein a proximal end of the lower body is encompassed by the upper body after the chamber creates the force to eject portions of the lower body from the upper body.

12. The method of claim 9 , wherein a lower body distal end projects away from an upper body distal end when the temporary coupling mechanism is coupling the upper body from the lower body.

13. The method of claim 9 , further comprising:

creating dynamic openings, via ports positioned through the lower body, to allow communication into the geological formation based on a change to a relative positioning of the lower body and the upper body caused by the force created by the chamber.

14. The method of claim 13 , wherein the ports are completely exposed to the geological formation after the portions of the lower body are ejected from the upper body.

15. The method of claim 9 , further comprising:

pumping cement through the lower body before the chamber creates the force.

16. The method of claim 9 , further comprising:

sealing the chamber via a rupture disc, wherein the chamber is configured to increase a piston area acting upon the lower body responsive to the rupture disc being removed, wherein when the rupture disc is intact the rupture disc is positioned between a proximal end of the lower body and the first location.