WE Report

Lessons Learned

Lessons Learned865

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

Faroe
274 – Faroe

 		Transocean Arctic Drilling Operational 30/6-30
Rungne		 Intermediate section 30/09/2019 Tagged fill 30 m above casing hanger landing depth/ casing shoe 36 m off bottom. Washed heavy casing . . .


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Faroe
275 – Faroe

 		Transocean Arctic Drilling Operational 30/6-30
Rungne		 Intermediate section 30/09/2019 Unable to set 9 5/8″ seal assembly. Observed initial pressure increase but unable to pass 100-120 . . .


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Faroe
276 – Faroe

 		Transocean Arctic Drilling Operational 30/6-30
Rungne		 Intermediate section 30/09/2019 The overpull margin was down to only 26 mt at the end, while running the heavy and long 9 5/8″ . . .


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Faroe
270 – Faroe

 		Transocean Arctic Drilling Operational 30/6-30
Rungne		 Intermediate section 27/09/2019 Difficult to achieve data acqusition requirement of 10 m samples.


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Faroe
271 – Faroe

 		Transocean Arctic Drilling Operational 30/6-30
Rungne		 Intermediate section 27/09/2019 Observed stick-slip while drilling through sand intervals and after a limestone stringer.


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Faroe
272 – Faroe

 		Transocean Arctic Drilling Operational 30/6-30
Rungne		 Intermediate section 27/09/2019 Axebalde bit with v-shaped cutters drilled through most limestone stringers without any reduction in . . .


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PGNiG
1290 – PGNiG

 		Deepsea Nordkapp Operational 6507/5-9 S, 6507/5-9 A
Shrek		 26/09/2019 Ekspress shipment fra Kokstad – ble ikke ekspress. Estimert ekspress tid/kjøring 10-12 timer. . . .


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PGNiG
1291 – PGNiG

 		Deepsea Nordkapp Operational 6507/5-9 S, 6507/5-9 A
Shrek		 26/09/2019 Ved Ekspress shipment fra WL ville ikke Bring dele ut mobilnummer til sjåfør, men kun et generelt . . .


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PGNiG
1287 – PGNiG

 		Deepsea Nordkapp Operational 6507/5-9 S, 6507/5-9 A
Shrek		 25/09/2019 NOV Wired Pipe – Måtte hastemobilisere ny og NOV kunne ikke pakke denne i basket (lengde 4 mtr) da . . .


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PGNiG
1292 – PGNiG

 		Deepsea Nordkapp Operational 6507/5-9 S, 6507/5-9 A
Shrek		 20/09/2019 Ved utlasting av 12-1/4″ BHA til sidesteg ble flere CCU’er stoppet i teknisk kontroll på Vestbase. . . .


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PGNiG
1286 – PGNiG

 		Deepsea Nordkapp Operational 6507/5-9 S, 6507/5-9 A
Shrek		 18/09/2019 mulig Ikke behov for å mobilisere WL disco pakke før funn. Ved funn blir det tidkrevende coring. Kun . . .


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PGNiG
334 – PGNiG

 		Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek		 Rig move 16/09/2019 Fiberglass innerstring joints for conductor (Halliburton Coring) not delivered for spudboat . . .


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PGNiG
333 – PGNiG

 		Deepsea Nordkapp Drilling Operational 6507/5-9 S, 6507/5-9 A
Shrek		 Rig move 12/09/2019
* B/U 9 7/8” BHA not delivered on time, but 3.5 days later than requested
* 8” backup contingency . . .


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PGNiG
1281 – PGNiG

 		Deepsea Nordkapp Operational 6507/5-9 S, 6507/5-9 A
Shrek		 05/09/2019 Problemer med å løfte Riser joints fra Normand Skude – Melon montert feil – kan ikke stables . . .


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PGNiG
1282 – PGNiG

 		Deepsea Nordkapp Operational 6507/5-9 S, 6507/5-9 A
Shrek		 05/09/2019 Problemer med riser joints – OD og underlevrandør feilmontert sling. Utfordring å heise til rigg. . . .


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PGNiG
1283 – PGNiG

 		Deepsea Nordkapp Operational 6507/5-9 S, 6507/5-9 A
Shrek		 04/09/2019 Manglende 13-3/8″ BX bushings til OWS casing kjøring. Ekspress til KSU og stnadby på basen.


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PGNiG
1284 – PGNiG

 		Deepsea Nordkapp Operational 6507/5-9 S, 6507/5-9 A
Shrek		 04/09/2019 Endringer i mudvekt – logistikk utfordringer – medfører just-in-time logistikk.


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Wellesley
206 – Wellesley

 		Transocean Arctic Drilling Operational 35/12-6 S
Kallåsen		 Production section 07/02/2019 Unable to release CRTi tool after using it for the first time (above). Spent 30 min. And called . . .


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Wellesley
207 – Wellesley

 		Transocean Arctic Drilling Operational 35/12-6 S
Kallåsen		 Production section 07/02/2019 AxeBlade Bit performed well, did not create stick-slip.


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Wellesley
208 – Wellesley

 		Transocean Arctic Drilling Operational 35/12-6 S
Kallåsen		 Production section 07/02/2019 The Halliburton BSS “skip & ship” system worked very well. There was no problem handling60 m/hr . . .


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