WE Report

Lessons Learned

Lessons Learned865


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

Faroe
282 – Faroe

Transocean Arctic Drilling Operational 30/6-30
Rungne
P&A 01/10/2019 Thread on tension mandrel was damaged in town (used for connecting Weatherford MOST tool to rotary . . .


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Faroe
283 – Faroe

Transocean Arctic Drilling Operational 30/6-30
Rungne
P&A 01/10/2019 Used smaller “Sea Owl” for subsea observation while cutting surface casing strings. This allowed . . .


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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
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
166 – Faroe

Deepsea Bergen Well test Operational 31/7-2 S
Brasse Appraisal
N/A 28/09/2017 Running cable through cut out in master bushing


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Faroe
168 – Faroe

Deepsea Bergen Well test Operational 31/7-2 S
Brasse Appraisal
N/A 28/09/2017 Changing out subsea test tree, from 10 to 15 k


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Faroe
175 – Faroe

Deepsea Bergen Drilling Operational 31/7-2 S
Brasse Appraisal
P&A 28/09/2017 8 hrs were used cutting the extension joints. During the cutting a high stick-slip was observed by . . .


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