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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Faroe
277 – Faroe

 		Transocean Arctic Drilling Operational 30/6-30
Rungne		 Reservoir section 01/01/2019 Made first connection on core BHA #3. This 64 m core BHA would require 2 connections on bottom. . . .


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Faroe
278 – Faroe

 		Transocean Arctic Drilling Operational 30/6-30
Rungne		 Reservoir section 01/01/2019 During POOH with coring assembly #3, took 70 mt overpull at 3250 m. After pulling further 9 m, got a . . .


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Faroe
1103 – Faroe

 		Transocean Arctic HSEQ
PSA Q&A		 Planning 31/7-3 A, 31/7-3 S
Brasse		 N/A 03/09/2018

4. Petroleumstilsynet sendte et likelydende brev til rederne datert 30. september 2016, med . . .

Karina Helle / Morten Laget


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Faroe
1104 – Faroe

 		Transocean Arctic HSEQ
PSA Q&A		 Planning 31/7-3 A, 31/7-3 S
Brasse		 N/A 03/09/2018

Med referanse til kapittel 9.6, beskrives det at Faroe vil overvåke helse og arbeidsmiljø gjennom . . .

Karina Helle / Morten Laget


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Faroe
1105 – Faroe

 		Transocean Arctic HSEQ
PSA Q&A		 Planning 31/7-3 A, 31/7-3 S
Brasse		 N/A 03/09/2018

Hvordan vil Faroe påse at boreentreprenøren følger opp eventuelle utestående aksjoner på . . .

Karina Helle / Morten Laget


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Faroe
1102 – Faroe

 		Transocean Arctic HSEQ
PSA Q&A		 Planning 30/6-30
Rungne		 N/A 13/07/2018

Hvem ivaretar MOB-beredskapen under operasjonen? TOA eller berredskapsfartøy?

Karina Helle / Morten Laget


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Faroe
157 – Faroe

 		Deepsea Bergen Drilling Operational 31/7-2 S
Brasse Appraisal		 P&A 28/09/2017 Drilled 36″ hole with 36″ bit at 21 m/hr on bottom ROP without problems maintaining verticality.


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Faroe
158 – Faroe

 		Deepsea Bergen Drilling Operational 31/7-2 S
Brasse Appraisal		 Top hole 28/09/2017 Problems to close the 30″ side door elevator due to shackles. Removed shackles and connected the 500 . . .


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Faroe
159 – Faroe

 		Deepsea Bergen Drilling Operational 31/7-2 S
Brasse Appraisal		 Surface section 28/09/2017 Painted lengths on 13 3/8″ casing from town was actual lengths, not M/U lengths. This might cause . . .


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Faroe
160 – Faroe

 		Deepsea Bergen Drilling Operational 31/7-2 S
Brasse Appraisal		 Surface section 28/09/2017 During M/U 18 3/4″ WHH, threads got cross threaded from side to side when moving the 18 3/4″ WHH. . . .


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Faroe
161 – Faroe

 		Deepsea Bergen Drilling Operational 31/7-2 S
Brasse Appraisal		 Intermediate section 28/09/2017 Remote on Cement head did not work. Had to operate manually by man in riding belt. The tool worked . . .


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Faroe
162 – Faroe

 		Deepsea Bergen Drilling Operational 31/7-2 S
Brasse Appraisal		 Reservoir section 28/09/2017
WL logs showed that the core point was in the Hardråde fm in the Shetland Gp and not in the Draupne . . .


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Faroe
163 – Faroe

 		Deepsea Bergen Drilling Operational 31/7-2 S
Brasse Appraisal		 Reservoir section 28/09/2017 Stick clay was observed in the lower Fensfjord fm. Up to 22mt overpull was observed POOH, and a . . .


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Faroe
164 – Faroe

 		Deepsea Bergen Drilling Operational 31/7-2 S
Brasse Appraisal		 Reservoir section 28/09/2017 Core jammed off after cutting 57m, not long after making a connection. Coring was started in the . . .


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