1. Present Procedure for cutting stuck casing on Drilling PLATFORM
In the event, that we are unable to land off, the14”casing string on its Mandrel Casing hanger, the following steps will need to be performed.

2. Present Procedure for cutting stuck casing
1. Run 14” casing.
2. Cement the 14” casing string in place.
3. Wait on Cement.
4. Remove any excess casing that may be sticking up above the rig floor. (cut # ?)
5. Ensure that the appropriate scaffolding is erected to allow work to be conducted safely. e.g. Breaking the connection under the BOP
6. Break the connection between the bottom of the BOP stack and the top of the 18 ¾” 10K riser assembly.
7. Lift the BOP assembly 2-3ft off the top of the riser. using the BOP crane/Hoist system.

3. Present Procedure for cutting stuck casing
8. Install the external casing cutting machine under the B.O.P to perform an external cut on the 14” or 10 ¾” casing string, Note the cut is to be made above the top of the upper Cameron 18 ¾” 10K hub top adaptor (cut # 1)
Associated Risk
Failure of BOP lifting devices
Personnel will need to work under suspended load
9. Drilling holes in to the casing to remove SBM. .
Associated Risk
Failure of BOP lifting devices
Personnel will need to work under suspended load

4. Present Procedure for cutting stuck casing
10. Remove the cutting tools. Lower the BOP assy on to the top of the Cameron 18 ¾” adaptor and secure same.
11. Lay out the 14” or 10 ¾” casing stub.
12. Remove the BOP stack and place it, on to the BOP test stump.
13. Drill adequate holes in 14” casing and attach individual lifting slings. One set on to the top of the 18 ¾” riser assembly and another set to the 14” casing string (simultaneously).
14. Calculate the length of 14” casing from the top of the wellhead to the rig Floor an support its weight
15. Break the connection between the bottom of the riser and the top of the Wellhead assembly.

5. Present Procedure for cutting stuck casing
16. Lift the riser assembly 2-3ft, off the top of MB wellhead assembly and install the18 ¾” x 14” Emergency slips.
17. Install the external casing cutting machine under the riser and cut the 14” or 10 ¾” casing string above the top of the wellhead NT2 connection (cut # 2)
18. Remove the external casing cutting tools and lower the 18 ¾” riser assy on to the top of the MB wellhead.
19. Lay out the 14” or 10 ¾” casing stub.
20. Lift the 18 ¾” riser assembly and lay out.
Install the wellhead NT2 adaptor and ICC machine.
22. Cut the 14” or 10 ¾” casing string below the top of the MB wellhead assy as per procedure (cut #3)

6. Eg: Cameron fast loc Connector @ BTM of B.O.P
Present Procedure for cutting stuck casing
1. Run 14” casing string.
2. Cement 14” casing string in place
3. Waiting on Cement
4. Ensure that the appropriate scaffolding is erected to allow work to be conducted safely. e.g.
5. Break Connection under BOP
Associated Risk
6. Left BOP ASSY to perform the first cut
Failure of BOP lifting devices
Eg: Cameron fast loc BTM of B.O.P
7. Install External casing cutter to perform the first cut
Personnel will need to work under suspended load
8. Lift Casing stub and lay out
9. Place BOP on test stump.
10. Remove the casing cutter and secure.
11. Drill Holes in casing OD to Install lifting devise

7. 12. Lower lifting slings and connect to 14” casing.
13. Lower lifting slings and connect to 18 ¾” Riser assy.
14. Break NT2 connector Wellhead MB Assy
15. lifting the 18 ¾” Riser assy to access the 14 casing.

8. 17. Install 14” casing cutter to perform 2nd cut on 14”.
16. Install 18 ¾” x 14” Emergency Slips
17. Install 14” casing cutter to perform 2nd cut on 14”.
18. Remove casing cutter form OD of casing and secure.
19. Lift second 14” casing stub and lay out.
20. Lift 18 ¾” Riser assy and remove.
Risk of personnel working under load.
Ie: Top of Vetco Gray wellhead

9. 21. Install NT2 Adaptor Plate required to perform Internal cut on 14”.
22. Install ICC machine on to pin adaptor
23. Perform all necessary check and perform the internal cut on the 14” .
24. Remove 14” casing stub together with ICC and Lay out. .
Top of Vetco Gray wellhead
25. Remove NT2 Adaptor Plate and Lay out. .

10. Why use an Alternative Internal Casing Cutting Machine (ICC) for Cutting Stuck Casing ?
This will eliminate the risk of personnel having to work under suspended loads.
This option will also eliminate the need to perform a second external cut on the casing string.
Steps
1. Run and cement the 14” casing string in place
2. Remove any excess casing, that may be sticking up, above the rig floor (cut # ?)
3. Rig up ICC contingency cutting tools.
RIH with ICC Machine and perform an Internal cut, ±12in above the top of the MB wellhead assembly. Cut # 1
Retrieve the ICC and lay out the14” casing stub.
6. Remove the BOP stack and place it on to the test stump.
7. Attach appropriate lift slings to the riser assembly, break the connection between the bottom of the riser and the top MB Wellhead assembly.

11. Alternative ICC for cutting stuck casing on
8. Lift the riser assembly off the top of MB wellhead assembly and Lay out.
Eliminate the risk of personnel working under suspended Riser to cut casing
9. Install the internal casing cutting machine and cut the 14” casing string below the top of the MB wellhead assy as per procedure (Final cut, # 2)

12. 10. Run 14” casing string.
11. Cement 14” casing string in place
12. Run ICC while Waiting on Cement
13. Ensure that the appropriate scaffolding is erected to allow work to be conducted safely.

13. 14. Install 14” casing cutter to perform first cut on 14”.
15. Remove casing cutter form ID of casing and secure.
16. Lift the14” casing stub and lay out.
No risk of personnel working under load.

14. N/D The Down The BOP Stack
17. Ensure that the appropriate scaffolding is erected to allow work to be conducted safely.
18. Break Connection under BOP
19. Lift BOP stack assy and place on stump.
Risk of personnel working under load mitigated
Personnel will not need to work under suspended load

15. N/D The Down The Riser Assy
20. Lower lifting slings and connect to 18 ¾” Riser assy.
21. Break NT2 connector the top of the MB Assy
22. lifting the 18 ¾” Riser assy to access the 14 casing.

16. No risk of personnel having to working under load. To cut casing

17. 23. Install NT2 Adaptor Plate required to perform Internal cut on 14”.
24. Install ICC machine on to pin of adaptor
25. Perform all necessary check and perform the internal cut on the 14” .
26. Remove ICC and casing stub.
Top of Vetco Gray wellhead
27. Remove the NT2 X Flange Adaptor

18. Concerns or Questions Slips Installed 18 ¾” Riser assy
1. Will the casing string need to be held in Tension BEFORE performing the cut ?
18 ¾” Riser
assy
. YES.
2. Will the Blades cut in to the ID of the Riser assy, while performing the cut on the casing string. ?
Top of Vetco Gray wellhead

19. Position of the Cutting Blades before Modifying
Center Line of Bolt Hole
Casing OD
ID of Riser
Distance between casing OD & Riser ID
Original Blade length
Reduce blade the length
Drill new holes

20. Position of the Cutting Blades before & After Modifying
Center Line of Bolt Hole
Casing OD
Blade Position Beyond Casing OD
Cut Blade Shorter
Drill new Hole to Modified Blades
Position of Blades after ¾”

21. Center Line of Bolt Hole
Position of the Cutting Blades After Modifying
Center Line of Bolt Hole
Casing OD
Install mod. Blade
secure blade
Bolt hole for blades

22. Position of the cutting blades prior to RIH

23. Blade Exceeding casing OD @ .75”
Position of the Cutting Blades before Modifying
Casing OD
Max ¾”
Set with ¼” Spacing
Cutting Blades at Full length
Blade Exceeding casing .75”

24. Blade Exceeding casing OD after Mod.
Position of the Cutting Blades after Modifying
Max ¾”
Set with ¼” Spacing
Casing OD
Blade Exceeding casing OD after Mod.

25. How to Center the ICC within the ID of the Casing
Casing OD
Cutting Blades
Hydraulically operated legs

26. Performing the Internal cut after Modifying the Blades.1 7 1 5 2
Rig Floor
The number of Rotation will be Monitored at the Rig Floor

27. ICC casing range design

28. ICC design data
MACHINING FUNCTION: Internally mounted pipe/ casing cut-off with dual tool post and remote control panel. MOUNTING SYSTEM: 3-jaw, hydraulic actuated universal chuck. TOOLING: Carbide Insert & Holder TOOL POST SYSTEM: Twin, continuous feed 60 degree, Hardened and Ground Dovetail type with dual parting blades. FEED RATE: Continuous worm drive .002” (.1016mm) per revolution. DRIVE SYSTEM: Gear Drive POWER: Hydraulic, psi CONTROLS: Remote control panel (with pedistal mount with independent clamp & spindle controls, pressure controls and tool position meter. DIMENSIONS: 8-1/2” (215.9 mm) O.D. x 13-1/2” (342.9 mm) long WEIGHT: 50 lbs. (23 kgs.)