WE Report

Lessons Learned

Lessons Learned865


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

Wellesley
1139 – Wellesley

Transocean Arctic Marine
PSA Q&A
Planning 25/1-13
Balcom
N/A 10/02/2021

AFC side 32 i søknaden står det «Earliest handover date for the rig is 22nd January 2018.». På side . . .

Karina Helle / Morten Laget



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Wellesley
1141 – Wellesley

Transocean Arctic Marine
PSA Q&A
Planning 25/1-13
Balcom
N/A 10/02/2021

Vi ber også om en beskrivelse av hvilke kommunikasjonsløsninger som blir brukt til å kommunisere . . .

Karina Helle / Morten Laget



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Faroe
1101 – Faroe

Transocean Arctic HSEQ
PSA Q&A
Planning 30/6-30
Rungne
N/A 08/02/2021

Er det representanter for Oceaneering på både arbeidstaker- og arbeidsgiversiden i felles stedlig . . .

Karina Helle / Morten Laget



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Wellesley
232 – Wellesley

Transocean Arctic Logistics Operational 35/11-21 S
Grosbeak West
Top hole 16/06/2020 Crane operator was unable to lift from supply vessel as basket was too heavy at one end due to 36″ . . .


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Wellesley
233 – Wellesley

Transocean Arctic Drilling Operational 35/11-21 S
Grosbeak West
Surface section 16/06/2020 Several joints had to be broken out and made up again due to difficulties with centralizing joints . . .


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Wellesley
234 – Wellesley

Transocean Arctic Drilling Operational 35/11-21 S
Grosbeak West
Production section 16/06/2020 Good experience M/U 9 5/8″ VAM21 CWD2 joint with drilling bails rather than longer casing bails. . . .


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Wellesley
235 – Wellesley

Transocean Arctic Drilling Operational 35/11-21 S
Grosbeak West
Reservoir section 16/06/2020 Dropped 2 15/16″ drift to check 5 1/2″ DP/HWDP prior to coring (coring ball 1 1/4″). The drift was . . .


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Wellesley
236 – Wellesley

Transocean Arctic Drilling Operational 35/11-21 S
Grosbeak West
Reservoir section 16/06/2020 720 litres of crude oil was left in bottom of well after MDT sampling on wireline. The MDT run was 2 . . .


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Wellesley
237 – Wellesley

Transocean Arctic Well test Operational 35/11-21 S
Grosbeak West
Reservoir section 16/06/2020 Had to break and re-M/U several joints on Vallourec 7″ 32# P-110 Vam 21 liner due to coating on 7″ . . .


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Wellesley
238 – Wellesley

Transocean Arctic Well test Operational 35/11-21 S
Grosbeak West
Reservoir section 16/06/2020 It took a lot of force to stab 2 x wiper plugs and 2 x cup testers into the 7″ liner. These items . . .


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Wellesley
239 – Wellesley

Transocean Arctic Well test Operational 35/11-21 S
Grosbeak West
Reservoir section 16/06/2020 Only able to pump with 2500 lpm while cleaning up 9 5/8″ casing and displacing from OBM to brine.


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Wellesley
240 – Wellesley

Transocean Arctic Well test Operational 35/11-21 S
Grosbeak West
Reservoir section 16/06/2020 During RIH of the DST string the sample carrier was over-torque to 14000 ftp instead of 4000 ftp. . . .


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Wellesley
241 – Wellesley

Transocean Arctic Well test Operational 35/11-21 S
Grosbeak West
Reservoir section 16/06/2020 While running the Surface Test Tree (STT) and attempting to make up the Upper stiff joint connection . . .


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Wellesley
242 – Wellesley

Transocean Arctic Well test Operational 35/11-21 S
Grosbeak West
Reservoir section 16/06/2020 During P/U weak link bails, the electric remote control was switched off on the shute. Due to the . . .


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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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