Methods and systems for a fishing tool

1. A fishing tool for oil or gas operations comprising:

a catching tool with catching fingers, wherein an inner diameter associated with the catching fingers is configured to transition from a first inner diameter to a second inner diameter, the first inner diameter being larger than the second inner diameter;

a housing with a body and a distal end;

rails extending between the body and the distal end, wherein the catching fingers are positioned between the rails, wherein an outer surface of the fishing tool includes outer surfaces of the rails and outer surfaces of the catching fingers: and

a slot configured to receive a first end of the rails when the catching fingers have the second inner diameter.

2. The fishing tool of claim 1 , further comprising:

a moving running tool coupled to the catching tool, wherein the moving running tool is configured to receive a hydraulic force and transfer a shifting force to the catching tool, wherein responsive to the catching tool receiving the shifting force the catching fingers move axially towards an opening in the housing, while the housing remains in a static position.

3. The fishing tool of claim 1 , wherein the housing is configured to remain in place while the catching tool moves towards a distal end of the fishing tool, wherein the inner diameter associated with the catching fingers transition from the first inner diameter to the second inner diameter responsive to moving the catching tool, wherein distal ends of the catching fingers are positioned between a proximal end of the fishing tool and an opening of the housing.

4. The fishing tool of claim 1 , further comprising:

internal tapered sidewalls positioned on the distal end of the housing;

external tapered sidewalls positioned on an end of the catching fingers.

5. The fishing tool of claim 4 , wherein the external tapered sidewalls are exposed when running the fishing tool in hole.

6. The fishing tool of claim 5 , wherein the external tapered sidewalls are encompassed by the internal tapered sidewalls when the fishing tool is pulled out of the hole.

7. The fishing tool of claim 1 , wherein the internal tapered sidewalls and the external tapered sidewalls are configured to be positioned adjacent to each other when the catching fingers have the second inner diameter.

8. The fishing tool of claim 1 , wherein the slot has a first length when the catching fingers have the first inner diameter and a second length when the catching fingers have the second inner diameter.

9. The fishing tool of claim 1 , wherein a length associated with the rails is shorter than a length associated with the catching fingers.

10. A method associated with a fishing tool for oil or gas operations comprising:

transitioning an inner diameter associated with catching fingers on a catching tool from a first inner diameter to a second inner diameter, the first inner diameter being larger than the second inner diameter;

positioning the catching fingers between rails on a housing, the housing including a body and a distal end, wherein the rails extending between the body and the distal end, wherein an outer surface of the fishing tool includes outer surfaces of the rails and outer surfaces of the catching fingers;

positioning a first end of the rails within a slot when the catching fingers have the second inner diameter.

11. The method of claim 10 , further comprising:

coupling the catching tool to a moving running tool;

applying a hydraulic force to the moving running tool;

transferring a shifting force to the catching tool responsive to the hydraulic force being applied to the moving running tool;

axially moving the catching fingers towards an opening in the housing while the housing remains in a static positions based on the shifting force.

12. The method of claim 10 , further comprising:

moving the catching tool towards a distal end of the fishing tool while the housing remains in place;

transitioning the inner diameter associated with the catching fingers from the first inner diameter to the second inner diameter responsive to moving the catching tool, wherein distal ends of the catching fingers are positioned between a proximal end of the fishing tool and an opening of the catching tool.

13. The method of claim 10 , wherein the housing includes internal tapered sidewalls positioned on the distal end of the housing, and the catching fingers include external tapered sidewalls positioned on an end of the catching fingers.

14. The method of claim 13 , further comprising:

exposing the external tapered sidewalls when running the fishing tool in hole.

15. The method of claim 14 , further comprising:

encompassing the external tapered sidewalls by the internal tapered sidewalls when the fishing tool is pulled out of the hole.

16. The method of claim 10 , further comprising:

positioning the internal tapered sidewalls and the external tapered sidewalls adjacent to each other when the catching fingers have the second inner diameter.

17. The method of claim 10 , wherein the slot has a first length when the catching fingers have the first inner diameter and a second length when the catching fingers have the second inner diameter.

18. The method of claim 10 , wherein a length associated with the rails is shorter than a length associated with the catching fingers.