WE Report

Lessons Learned

Lessons Learned865

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

Wellesley
2323 – Wellesley

 		Borgland Dolphin Drilling Operational 36/1-4
Hemispheres		 Top hole 24/12/2021 Tool used successfully but Schlumberger should be told what our requirements are at the planning . . .

Drilling Supervisor / Morten Laget


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INEOS
2316 – INEOS

 		Borgland Dolphin Drilling
Own Experience		 Operational 6306/3-1 S
Fat Canyon		 Production section 09/12/2021 Extremeley slow drilling. At worst it was down to 1-2m/hr. At best it was 9-12m/hr.

Steinar Aarnes / Morten Laget


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INEOS
2319 – INEOS

 		Borgland Dolphin Drilling
Own Experience		 Planning 6306/3-1 S
Fat Canyon		 Top hole 09/12/2021
Encountered several shallow gas zones. The decision to use and mobilize foam cement took some . . .

Steinar Aarnes / Morten Laget


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INEOS
2300 – INEOS

 		Borgland Dolphin Drilling
Own Experience		 Planning 6306/3-1 S
Fat Canyon		 Intermediate section 09/11/2021
Initial planned centralizer program of using 1 centralizer every other joint above shoetrack to top . . .

Drilling Supervisor / Morten Laget


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INEOS
2275 – INEOS

 		Borgland Dolphin Drilling
Own Experience		 Operational 6306/3-1 S
Fat Canyon		 Intermediate section 06/11/2021 Had two bit trips with very low, down to 1 m/hr ROP

Drilling Supervisor / Morten Laget


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INEOS
2205 – INEOS

 		Borgland Dolphin Drilling
Own Experience		 Operational 6306/3-1 S
Fat Canyon		 Pre-Lay 06/10/2021 Spud BHA was loaded at Gomez location but not the conductor. Result was that conductor could not be . . .

Drilling Supervisor / Morten Laget


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INEOS
2206 – INEOS

 		Borgland Dolphin Drilling
Own Experience		 Operational 6306/3-1 S
Fat Canyon		 Top hole 06/10/2021 9 7/8″ pilot hole BHA received before spud but 17 1/2″ followed later. Had spudded well before 17 . . .

Drilling Supervisor / Morten Laget


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INEOS
2207 – INEOS

 		Borgland Dolphin Drilling
Own Experience		 Planning 6306/3-1 S
Fat Canyon		 Top hole 06/10/2021 We found shallow gas, and suddenly had to rely on surface equipment (iBOPs on the DDM) as a second . . .

Drilling Supervisor / Morten Laget


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INEOS
2208 – INEOS

 		Borgland Dolphin Drilling
Own Experience		 Planning 6306/3-1 S
Fat Canyon		 Top hole 06/10/2021 Hit shallow gas on drilling pilot hole.

Drilling Supervisor / Morten Laget


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DNO
2188 – DNO

 		Borgland Dolphin Subsea
Own Experience		 Planning A-1 H, A-2 H, A-3 HT2
Oselvar		 P&A 01/10/2021 As planned

Lars Solvang / Stig Seland



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DNO
2190 – DNO

 		Borgland Dolphin Subsea
Own Experience		 Planning A-1 H, A-2 H, A-3 HT2
Oselvar		 P&A 01/10/2021 As planned

Lars Solvang / Stig Seland



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INEOS
3406 – INEOS

 		Borgland Dolphin Logistics
Own Experience		 Operational PL937
Fat Canyon		 Rig move 01/10/2021 Realised that a crossover for the Hole Opener on the 36″x 42″ BHA was missing.

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INEOS
2164 – INEOS

 		Borgland Dolphin Logistics
Own Experience		 Operational PL937
Fat Canyon		 Top hole 25/09/2021 Equipment was not loaded onto rig when rig was moored at Gomez well location. Offloading supply . . .

Drilling Supervisor / Morten Laget


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DNO
2096 – DNO

 		Borgland Dolphin Drilling
Own Experience		 Operational 2/5-15
Gomez		 Surface section 22/08/2021 DrilQuip MPT and BOP test tool was sent out without pup joints.

Drilling Supervisor / Morten Laget


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DNO
2010 – DNO

 		Borgland Dolphin Drilling
Own Experience		 Operational 2/5-15
Gomez		 Top hole 12/08/2021 We could not store enough Tuned Light cement on two cmt silos on the rig to get the required volume . . .

Drilling Supervisor / Morten Laget


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DNO
2011 – DNO

 		Borgland Dolphin Drilling
Own Experience		 Operational 2/5-15
Gomez		 Rig move 12/08/2021 Scope of work was not sent to OIM or DSV before job. Two men from Schlumberger arrived at rig to . . .

Drilling Supervisor / Morten Laget


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DNO
1992 – DNO

 		Borgland Dolphin C&P
Own Experience
INTERNAL		 Operational A-1 H, A-2 H, A-3 HT2
Oselvar		 N/A 14/07/2021 Sometimes invoice dates does not match with actual backload dates

Drilling Engineer / Stig Seland



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DNO
1446 – DNO

 		Borgland Dolphin Drilling
Own Experience		 Operational A-3 HT2
Oselvar		 P&A 26/04/2021 A week’s work trying to pull completion, high overpulls throughout, over 200 plastic clamps lost . . .

Drilling Supervisor / Stig Seland



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DNO
1432 – DNO

 		Borgland Dolphin External Environment
NEA Q&A		 Planning 2/5-15
Gomez		 23/04/2021

Lack of justification why BO rates are lower in ST than MB, as the ST is 500 m deeper and length of . . .

Christina Sæland Rødne / Morten Laget



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DNO
1433 – DNO

 		Borgland Dolphin External Environment
NEA Q&A		 Planning 2/5-15
Gomez		 23/04/2021

Change in regulation §66 – contingency chemicals does not include chemicals used for lost . . .

Christina Sæland Rødne / Christina Sæland Rødne



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