WE Report

Lessons Learned

Lessons Learned865


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

Wellesley
243 – Wellesley

Transocean Arctic Drilling Operational 35/11-21 A
Grosbeak
Intermediate section 16/06/2020 The remote operated lo-torq valve was installed with an elbow between side inlet and lo-torq, while . . .


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Wellesley
244 – Wellesley

Transocean Arctic Drilling Operational 35/11-21 A
Grosbeak
Intermediate section 16/06/2020 Making up cmt. Stand into landing string prior to landing 9 5/8″ casing was done by use of chain . . .


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Wellesley
245 – Wellesley

Transocean Arctic Drilling Operational 35/11-21 A
Grosbeak
Reservoir section 16/06/2020 There were 5 wireline drums on the rig during wireline logging and logging on DP. The operations . . .


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Wellesley
246 – Wellesley

Transocean Arctic Drilling Operational 35/11-21 A
Grosbeak
Reservoir section 16/06/2020 Inner bushing with cut-out for wireline was not mobilized for this wireline conveyed logging job. A . . .


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Wellesley
247 – Wellesley

Transocean Arctic Drilling Operational 35/11-21 A
Grosbeak
Reservoir section 16/06/2020 During sampling it was found out that the exit point was not consistent to be on top of the FTWT . . .


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Wellesley
248 – Wellesley

Transocean Arctic Drilling Operational 35/11-21 A
Grosbeak
Reservoir section 16/06/2020 Max flowrate for extracting formation fluid with the FTWT tool was said to be 6-7 lpm. During this . . .


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Wellesley
249 – Wellesley

Transocean Arctic Drilling Operational 35/11-21 A
Grosbeak
Reservoir section 16/06/2020 N/A


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Wellesley
250 – Wellesley

Transocean Arctic Drilling Operational 35/11-21 A
Grosbeak
P&A 16/06/2020 N/A


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Wellesley
251 – Wellesley

Transocean Arctic Drilling Operational 35/11-21 A
Grosbeak
P&A 16/06/2020 N/A


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