WE Report

Lessons Learned

Lessons Learned865

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Operator Rig Discipline / Origin Project Phase Well Section Date What Happened

PGNiG
376 – PGNiG

 		Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek		 Reservoir section 22/10/2019 Coal was discovered in reservoar, resulting in stuck core barrels on annulus.


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PGNiG
377 – PGNiG

 		Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek		 Reservoir section 22/10/2019 Waited for 30 minutes for annular relaxation after a P/T.


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PGNiG
378 – PGNiG

 		Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek		 Production section 22/10/2019 Issues recovering the OH 9-5/8” csg (in preparation for ST). Swabbing in annulus and back flow up . . .


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PGNiG
379 – PGNiG

 		Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek		 Production section 22/10/2019 Cut of 9-5/8” casing close to/above uncemented weak sand interval (w/ minor 5% gas). Resulted in . . .


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PGNiG
380 – PGNiG

 		Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek		 Reservoir section 22/10/2019 Circulating after releasing 9-5/8” hgr.


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PGNiG
381 – PGNiG

 		Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek		 Reservoir section 22/10/2019 Circulating beneath annular for potential gas (ie on pulling seal assy)


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PGNiG
382 – PGNiG

 		Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek		 Production section 22/10/2019 12-/4” drilling – parameters went well.


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PGNiG
383 – PGNiG

 		Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek		 Production section 22/10/2019 Had to stop operations to fix a leak in TDX s-pipe connection – 2x o-rings.


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PGNiG
384 – PGNiG

 		Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek		 Production section 22/10/2019 NOV software did not include the PGNiG well so PGNiG personnel unable to see it – only seen in . . .


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PGNiG
385 – PGNiG

 		Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek		 Production section 22/10/2019 Excellent mud performance throughout operations. Issues with O/W ratio due to topside issues.


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PGNiG
386 – PGNiG

 		Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek		 Production section 22/10/2019 Excellent cement performances throughout operations (except the first KOP due to losses, weak . . .


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PGNiG
335 – PGNiG

 		Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek		 Rig move 21/10/2019 The c-plate was onshore and put on spud boat just in time.


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PGNiG
336 – PGNiG

 		Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek		 Rig move 21/10/2019 Due to AHV cost we moored prior to spudding due to vessels been on contract due to market situation


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PGNiG
337 – PGNiG

 		Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek		 Top hole 21/10/2019
When running conductor 0.5 m higher stick-up was observed.
Base plan was to hold the conductor . . .


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PGNiG
338 – PGNiG

 		Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek		 Top hole 21/10/2019
Slow ROP with 36″ x 42″ BHA, due to keeping neutral point below seabed, it limited the drilling . . .


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PGNiG
339 – PGNiG

 		Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek		 Top hole 21/10/2019 Rigged up for conductor running, extra 20 ft mobilized for the operation.


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PGNiG
340 – PGNiG

 		Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek		 Pilot hole section 21/10/2019 BHAs racked offline; very tight tolerances with racking boards and stabilizers etc. Same crew that . . .


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PGNiG
341 – PGNiG

 		Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek		 Pilot hole section 21/10/2019 Debris and cuttings could congregate around the subsea WHIM as cuttings would not go to surface . . .


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PGNiG
1295 – PGNiG

 		Deepsea Nordkapp Operational 6507/5-9 S, 6507/5-9 A
Shrek		 15/10/2019 Fuel rapportering må gjøres på månedbasis.


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PGNiG
1298 – PGNiG

 		Deepsea Nordkapp Operational 6507/5-9 S, 6507/5-9 A
Shrek		 15/10/2019 Benytte nye slings til pulled casing?


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