WE Report

Lessons Learned

Lessons Learned865


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

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
2317 – INEOS

Borgland Dolphin Drilling
Own Experience
Operational 6306/3-1 S
Fat Canyon
Production section 09/12/2021
Extremely slow progress ranging from 1-10m/hr.
Likely due to sweeling/stickyness of clay due to use . . .

Steinar Aarnes / Morten Laget


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INEOS
2318 – INEOS

Borgland Dolphin Drilling
Own Experience
Operational 6306/3-1 S
Fat Canyon
Production section 09/12/2021
The used 9 5/8″ casing was run quite smoothly. Not a single joint rejected, and Frank’s tongs . . .

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
2320 – INEOS

Borgland Dolphin Drilling
Own Experience
Operational 6306/3-1 S
Fat Canyon
Production section 09/12/2021
Managed to barely land the casing in very sticky clay.

Since the mainbore 9 5/8″ casing became . . .

Steinar Aarnes / Morten Laget


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INEOS
2302 – INEOS

Borgland Dolphin Drilling
Own Experience
Operational 6306/3-1 S
Fat Canyon
Production section 10/11/2021 Went down with 9 5/8″ cutters and cut the casing, observed 75 bar pressure drop and torque drop to . . .

Drilling Engineer / 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
2276 – INEOS

Borgland Dolphin Drilling
Own Experience
Operational 6306/3-1 S
Fat Canyon
Intermediate section 07/11/2021 Decided to use the Franks casing circulating tool FA-1

Drilling Supervisor / Morten Laget


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INEOS
2277 – INEOS

Borgland Dolphin Drilling
Own Experience
Operational 6306/3-1 S
Fat Canyon
Intermediate section 07/11/2021 It took 4,25 hrs to rig it up on Borgland Dolphin. The rigging up of casing tong and FMS slips . . .

Drilling Supervisor / Morten Laget


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INEOS
2278 – INEOS

Borgland Dolphin Drilling
Own Experience
Operational 6306/3-1 S
Fat Canyon
Intermediate section 07/11/2021 We had several faults on the Franks equipment. This led to troubleshooting, phone calls to town, . . .

Drilling Supervisor / Morten Laget


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INEOS
2279 – INEOS

Borgland Dolphin Drilling
Own Experience
Planning 6306/3-1 S
Fat Canyon
Intermediate section 07/11/2021 9 5/8″ float shoe filled up with mud.

Drilling Supervisor / Morten Laget


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INEOS
2280 – INEOS

Borgland Dolphin Drilling
Own Experience
Operational 6306/3-1 S
Fat Canyon
Intermediate section 07/11/2021 Had initially many problems with Franks equipment that did not work, and cold windy weather outside . . .

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
3407 – INEOS

Borgland Dolphin Drilling
Own Experience
Operational PL937
Fat Canyon
Intermediate section 04/11/2021
ROP in 12 1/4″ section dropped to almost nothing at +/- 1900 m. Drilling parameters were varied, and . . .

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INEOS
2269 – INEOS

Borgland Dolphin Drilling
Own Experience
Operational 6306/3-1 S
Fat Canyon
Intermediate section 31/10/2021 ROP dropped from 50 m/hr to 1 m/hr

Drilling Supervisor / Morten Laget


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INEOS
2214 – INEOS

Borgland Dolphin Drilling
Own Experience
Operational 6306/3-1 S
Fat Canyon
Top hole 10/10/2021 It happened as planned. However, a suggestion of improvement was proposed.

Drilling Engineer / Morten Laget


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INEOS
2210 – INEOS

Borgland Dolphin Drilling
Own Experience
Planning 6306/3-1 S
Fat Canyon
Top hole 07/10/2021 The MWD/LWD SLB engineer started working and programming the BHA but sturggled to program it. It was . . .

Drilling Engineer / 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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