Quick connect device and sub

1. A quick connect system for connecting a first downhole tool to a second downhole tool, the quick connect system comprising:

a quick connect device configured to be mechanically attached to the first downhole tool; and

a top sub configured to be mechanically attached to the quick connect device and also to the second downhole tool,

wherein the top sub has a first bulkhead element that prevents a high pressure gas from the second downhole tool to damage the quick connect device, and

wherein the quick connect device has a spring-loaded electrical contact at each end.

2. The quick connect system of claim 1 , wherein the quick connect device includes an electrical connections assembly that extends from one end to another end of the quick connect device.

3. The quick connect system of claim 2 , wherein the electrical connections assembly includes:

a plunger;

a spring attached to the plunger; and

a barrel that houses the spring and the plunger.

4. The quick connect system of claim 3 , wherein the electrical connections assembly further includes:

a fixed element fixedly attached to the barrel; and

a contact rod having a first end located inside the barrel.

5. The quick connect system of claim 4 , wherein the electrical connections assembly further includes:

a screw fixedly attached to another end of the contact rod;

another spring configured to electrically contact the screw; and

an electrical contact configured to electrically contact the another spring.

6. The quick connect system of claim 5 , wherein the plunger extends outside a body of the quick connect device and the electrical contact is located inside a chamber of the body.

7. The quick connect system of claim 6 , wherein the plunger enters inside the first downhole tool and the electrical contact electrically contacts the first bulkhead element of the top sub.

8. The quick connect system of claim 7 , wherein the first bulkhead element fully occupies a cross-section of a bore of the top sub and seals the quick connect device from the second downhole tool.

9. The quick connect system of claim 8 , further comprising:

a second bulkhead element provided inside the top sub and facing the second downhole tool.

10. The quick connect system of claim 1 , wherein the first downhole tool is a wireline and the second downhole tool is a gun assembly.

11. A quick connect device for connecting a first downhole tool to a second downhole tool in a well, the quick connect device comprising:

a mandrel extending along a longitudinal axis;

a collar attached to a downstream end of the mandrel;

an electrical connections assembly extending from one end to the other end of the mandrel; and

an electrical insulators assembly surrounding the electrical connections assembly to prevent an electrical contact between the electrical connections assembly and a body of the mandrel,

wherein both ends of the electrical connections assembly have spring-loaded electrical contacts.

12. The quick connect device of claim 11 , wherein the electrical connections assembly comprises:

a plunger;

a spring attached to the plunger; and

a barrel that houses the spring and the plunger and extends along the longitudinal axis.

13. The quick connect device of claim 12 , wherein the electrical connections assembly further includes:

a fixed element fixedly attached to the barrel; and

a contact rod having a first end located inside the barrel.

14. The quick connect device of claim 13 , wherein the electrical connections assembly further includes:

a screw fixedly attached to another end of the contact rod;

a spring attached to the screw; and

an electrical contact attached to the spring.

15. The quick connect device of claim 14 , wherein the electrical insulators assembly comprises:

a first tubular insulator located around the barrel;

a second tubular insulator located around the contact rod;

an insulator washer located adjacent the second tubular insulator; and

an insulator retainer that is adjacent to the insulator washer and also attached to the contact rod.

16. The quick connect device of claim 15 , wherein the insulator retainer attaches with threads to the contact rod.

17. The quick connect device of claim 14 , wherein there is a gap between the fixed element and the contact rod.

18. The quick connect device of claim 11 , wherein the collar rotates relative to the body.

19. The quick connect device of claim 18 , wherein the collar has a quick connection mechanism that connects to a sub without rotating the sub or the body.

20. A method for connecting a first downhole tool to a second downhole tool in a well, the method comprising:

providing the first downhole tool;

connecting a top sub to the first downhole tool;

attaching a quick connect device to the top sub; and

attaching the quick connect device to the second downhole tool,

wherein the quick connect device has a spring-loaded electrical contact at each end and the top sub includes at least one bulkhead element that prevents a high pressure gas from the first downhole tool to reach the quick connect device.

21. The method of claim 20 , wherein the first downhole tool is a gun assembly and the second downhole tool is a wireline.