WE Report

Lessons Learned

Lessons Learned865

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

PGNiG
366 – PGNiG

 		Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek		 Reservoir section 22/10/2019 FIT was performed as planned. Pumped approx. 2 m3 before 8 bar reference pressure was seen.


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PGNiG
367 – PGNiG

 		Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek		 Reservoir section 22/10/2019 Performed FIT to 1.58 sg.


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PGNiG
368 – PGNiG

 		Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek		 Reservoir section 22/10/2019 Drilled 8 1/2″ section with 1.30 sg MW. Based on LWD data from 12 ¼” the predicted PP in the 8 ½” . . .


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PGNiG
369 – PGNiG

 		Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek		 Reservoir section 22/10/2019 Difficult to decide on placement of centralizers for racking since the casing joints vary in lengths . . .


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PGNiG
370 – PGNiG

 		Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek		 Reservoir section 22/10/2019 Reduced torque when drilling out shoetrack resulting in less efficiency.


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PGNiG
371 – PGNiG

 		Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek		 Reservoir section 22/10/2019 StormGeo faultly predicted the upcoming weather, resulting in new decisions being made based on . . .


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PGNiG
372 – PGNiG

 		Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek		 Reservoir section 22/10/2019 Problems with gas readings from gas trap with flow less than 2000 lpm. Gas trap installed in flow . . .


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PGNiG
373 – PGNiG

 		Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek		 Reservoir section 22/10/2019
Odfjell changing out parts of Management (TSL, DSL, OIM) to attend 3 day leadership seminar onshore. . . .


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PGNiG
374 – PGNiG

 		Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek		 Reservoir section 22/10/2019 Getting OBM sent out lith a low O/W ratio (70/30).


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PGNiG
375 – PGNiG

 		Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek		 Reservoir section 22/10/2019 Cores were retrieved successfully.


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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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