STANDARD OPERATING PRACTICEWEATHERFORD RIG 829

SOP # 829-015Revision 1

NIPPLE DOWN BOPS

Date: 28 October 2010People: Driller, AD, floor men, TP, crane and forklift operatorsEquipment: BOP handlers, hammer, hammer wrenches, forklift, air hoist, slinging, crane, snorkelift, safety harness.Location: Cellar and front of the sub.Practice:

1. Lay down the mousehole.2. TP supervises shutting down the accumulator. Bleed all pressure off for the rig

move, and then close all valves to the bottles. Leave the bleed off valve on the manifold open.

3. Remove all the hoses from the BOP end and fold the hoses back onto the suitcase. Disconnect all the hoses from the accumulator end and fold them back onto that suitcase. Secure these lines prior to the move.

4. Disconnect and remove the emergency lines to the catwalk. Use the forklift to assist.

5. Remove the turnbuckles.6. Remove the bell nipple. Use the air hoist to lower it and a long sling to the

forklift to pull it away from the BOP. Lay it down, remove the slings and take it away with the forklift.

7. Disconnect the choke line at the valve end.8. Disconnect the kill line to the standpipe between the valves and the sub. Use the

air hoist to lower them.9. Sling the BOP handler to the lifting eyes on the top set of rams.10. Break and remove all the studs and nuts between the bottom of the double gate

and the drilling spool. 11. Set a matting board near the end of the BOP handler rails.12. Lift the double gate with the hydril and drive it over to the matting and set it

down. Disconnect the handlers from the double gate.13. Remove the hydril / double gate with the crane.14. Sling the BOP handler to the single gate.15. Break and remove the bottom of the single gate if the adapter flange needs to be

changed for next nipple up otherwise break the studs at the bottom of the adapter flange.

16. Pick up the single gate rams with drilling spool and drive it over to the mat. Set it on the mat.

17. Remove the bottom section with the crane.18. Remove the adapter from the well head if it was left on.19. NOTE: If the BOPs need to be completely disassembled, leave the adapter on the

wellhead, move the BOPs over the mat, set down. Break off the single gate, pick up the BOP and back into the sub. Remove the single gate with the crane or

1

STANDARD OPERATING PRACTICEWEATHERFORD RIG 829

SOP # 829-015Revision 1

forklift. Repeat this process until all sections are apart. Never use the eyes on the hydril for anything but lifting the hydril. Do connect the hydril to the crane or the BOP handler unless it is by itself.

2