Method and system for performing well operations

1. A method for performing operations in a well, comprising:

sensing a condition at, adjacent, or within a wellhead arrangement located at an opening of the well when a tool is located at, adjacent to, or within the wellhead arrangement; and

performing a safety procedure in response to the sensed condition to improve the safety of the well operations,

wherein performing the safety procedure comprises:

transmitting a signal from a controller to the tool via a line attached to the tool to thereby communicate with the tool; and

controlling the operation of the tool in response to the signal received by the tool via the line.

2. A method according to claim 1 , comprising sensing the condition when at least one of:

during recovery of the tool from the well;

as the tool is recovered into the wellhead arrangement; and

when the tool is located within the wellhead arrangement.

3. A method according to claim 1 , wherein the sensed condition is associated with at least one of:

a status of the tool;

an emission, field or signal transmitted to and/or from the tool, extending to and/or from, and/or coupled from the tool;

radio-activity;

at least one of an electromagnetic field, an electric field, a magnetic field, an electromagnetic flux, an electric flux, a magnetic flux, a RF electromagnetic field, a RF electromagnetic signal, an optical field, an optical signal, and an acoustic signal;

an exterior temperature of the tool;

an interior temperature of the tool; and

an interior pressure of the tool.

4. A method according to claim 1 , wherein sensing the condition comprises reading or receiving information from the tool and wherein the information read or received from the tool comprises at least one of tool status information, tool identification information and tool sensor information.

5. A method according to claim 1 , comprising sensing the proximity of the tool to the opening of the well.

6. A method according to claim 1 , wherein performing the safety procedure comprises at least one of:

controlling the tool;

arresting movement of the tool; and

lowering the tool to a predetermined position within the well.

7. A method according to claim 1 , wherein performing the safety procedure comprises at least one of controlling a condition of the tool, controlling a status of the tool, switching off the tool, disabling the tool, isolating the tool, switching off or cutting an emission, field or signal transmitted to and/or from the tool, extending to and/or from the tool, and/or coupled to and/or from the tool.

8. A method according to claim 1 , wherein performing the safety procedure comprises providing, raising or issuing an alarm.

9. A method according to claim 1 , wherein performing the safety procedure comprises sealing the well.

10. A method according to claim 1 , comprising providing the tool with an RFID tag and storing at least one of tool status information, tool identification information and tool sensor information in the RFID tag, and locating an RFID reader at, adjacent to, or within, the wellhead arrangement and using the RFID reader to read the information store in the RFID tag.

11. A method according to claim 1 , wherein the sensed condition is associated with at least one of:

a composition and/or concentration of a fluid within the wellhead arrangement or of a fluid emitted from the wellhead arrangement;

a composition and/or a concentration of at least one of a fluid, a hydrocarbon fluid, a gas, a hydrocarbon gas, hydrogen sulphide and carbon dioxide; and

a pressure and/or a temperature of a fluid at, adjacent or within the wellhead arrangement.

12. A method according to claim 1 , wherein performing the safety procedure comprises controlling at least one of:

an environment at, adjacent or within the wellhead arrangement; and

a stuffing box pressure so as to contain fluid in the wellhead arrangement or so as to at least reduce leakage of fluid from the wellhead arrangement.

13. A method according to claim 1 , comprising:

providing the tool with an RFID tag;

storing tool information in the RFID tag; and

using an RFID tag reader provided at, adjacent to, or within the wellhead arrangement at the opening of the well to read the stored tool information from the RFID tag when the tool is located at, adjacent to, or within the wellhead arrangement; and

performing the safety procedure in response to the stored tool information read from the RFID tag.

14. A method according to claim 13 , wherein the tool information comprises at least one of a tool identifier code, a tool status and tool sensor data.

15. A method according to claim 13 , comprising at least one of:

reading the stored tool information from the RFID tag as the as the tool is recovered from the well past the RFID tag reader; and

reading the stored tool information from the RFID tag as the tool is deployed into the well past the RFID tag reader.

16. A method according to claim 13 , wherein performing the safety procedure comprises controlling at least one of:

a position or status of the tool; and

controlling an environment at, adjacent to, or within the wellhead arrangement.

17. A method according to claim 13 , comprising:

providing each tool of a plurality of tools with an RFID tag;

storing tool information in each RFID tag; and

using an RFID tag reader provided at, adjacent to, or within a wellhead arrangement at an opening of a well to read the stored tool information from each RFID tag.

18. A method according to claim 17 , comprising performing the safety procedure in response to the stored tool information read from one or more of the RFID tags.

19. A method according to claim 1 , wherein performing the safety procedure comprises paying out and/or hauling in the line so as to control the position of the tool in the well.

20. A method according to claim 1 , wherein performing the safety procedure comprises moving the tool through one or more predetermined movements.

21. A method according to claim 1 , wherein the line comprises at least one of a composite slickline, a coated slickline, and an insulated slickline.

22. A system for performing operations in a well, wherein the well comprises a wellhead arrangement located at an opening of the well and the system comprises:

a tool;

a line attached to the tool;

a sensor for sensing a condition at, adjacent, or within the wellhead arrangement when the tool is located at, adjacent to, or within the wellhead arrangement; and

a controller configured for communication with the sensor and the well equipment,

wherein the controller is configured to perform a safety procedure in response to the sensed condition to improve the safety of the well operations, and

wherein performing the safety procedure comprises:

transmitting a signal from the controller to the tool via the line to thereby communicate with the tool; and

controlling the operation of the tool in response to the signal received by the tool via the line.