Cap for a hydrocarbon production well and method of use

1. A sealing cap for sealing a hydrocarbon production well, the sealing cap comprising:

a body comprising a top and a bottom;

wherein the bottom comprises a first connecting flange comprising a first seal face prepared for sealing against a packing seal, wherein the first connecting flange comprises a structure to connect to an end flange of a wellhead component;

wherein the top comprises a second connecting flange comprising a second seal face prepared for sealing against a packing seal;

a recess extending from the first connecting flange into the body;

a channel extending between an outside of the sealing cap and the recess; and

a sensor device arranged in fluid communication with the channel.

2. The sealing cap according to claim 1 , the body forming a fluid-tight structure between a first area (A) enclosed by the first seal face and a second area (B) enclosed by the second seal face.

3. The sealing cap according to claim 1 , further comprising a packing seal arranged on the first connecting flange.

4. The sealing cap according to claim 1 , further comprising a cover arranged on the second connecting flange, the cover arranged to cover the second seal face.

5. The sealing cap according to claim 4 , wherein the cover comprises at least one packing seal arranged in sealing engagement with the second connecting flange.

6. The sealing cap according to claim 1 , wherein the first connecting flange, the second connecting flange, and the body are machined from a single piece of metal material.

7. A wellhead system comprising:

a wellhead component comprising a valve tree or a wellhead; and

a sealing cap connected to the wellhead component and structured to prevent a fluid escaping from the wellhead component, wherein the sealing cap comprises:

a body comprising a top and a bottom;

wherein the bottom comprises a first connecting flange comprising a first seal face prepared for sealing against a packing seal, wherein the first connecting flange comprises a structure to connect to an end flange of the wellhead component;

wherein the top comprises a second connecting flange comprising a second seal face prepared for sealing against a packing seal;

a recess extending from the first connecting flange into the body;

a channel extending between an outside of the sealing cap and the recess; and

a sensor device arranged in fluid communication with the channel.

8. A method for entering a hydrocarbon production well, comprising:

providing a wellhead component comprising a valve tree or a wellhead, wherein a sealing cap is connected to the wellhead component wherein the sealing cap comprises:

a body comprising a top and a bottom;

wherein the bottom comprises a first connecting flange comprising a first seal face, wherein the first connecting flange comprises a structure to connect to an end flange of the wellhead component;

wherein the top comprises a second connecting flange comprising a second seal face;

the method further comprising:

connecting a riser to the second connecting flange of the sealing cap in sealing engagement with the second seal face;

lowering a machining tool into the riser and machining a through-going opening through the body of the sealing cap.

9. The method according to claim 8 , wherein the hydrocarbon production well comprises a downhole plug, wherein the method further comprises removing or replacing the downhole plug.

10. The method according to claim 8 , further comprising placing a downhole plug in the hydrocarbon production well.

11. The method according to claim 8 , wherein the wellhead component is the valve tree, wherein the method further comprises machining through at least one valve in the valve tree.

12. The method according to claim 8 , wherein the machining an opening through the body comprises: milling an opening through the body and/or drilling an opening through the body.

13. The method according to claim 8 , comprising machining through a sensor device.

14. The method according to claim 8 , comprising machining through a component for a sensor device connected to the body.

15. A method for enabling re-entry into a hydrocarbon production well, comprising:

providing a sealing cap, wherein the sealing cap comprises:

a body comprising a top and a bottom;

wherein the bottom comprises a first connecting flange comprising a first seal face prepared for sealing against a packing seal, wherein the first connecting flange comprises a structure to connect to an end flange of a wellhead component;

wherein the top comprises a second connecting flange comprising a second seal face prepared for sealing against a packing seal;

a recess extending from the first connecting flange into the body;

a channel extending between an outside of the sealing cap and the recess; and

a sensor device arranged in fluid communication with the channel; and

arranging the sealing cap on a wellhead component of the hydrocarbon production well.

16. The method according to claim 15 , further comprising plugging the hydrocarbon production well by setting at least one plug in the hydrocarbon production well.

17. The method according to claim 16 , wherein the wellhead component is a valve tree, or the wellhead component is a wellhead.

18. The method according to claim 15 , wherein the wellhead component is a valve tree, or the wellhead component is a wellhead.