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Current published drilling records

Category 1: Longest Well (MD)

# Operator Country Field/Concession Rig Name Well Name Total Measured Depth* Year
1 ADNOC Offshore UAE Upper Zakum AD68 UZ706 53,000 ftMD (16,163.6 mMD) 2024
2 ADNOC Offshore UAE Upper Zakum AD68 UZ696 52,000 ftMD (15,848.8 mMD) 2024
3 ADNOC Offshore UAE Upper Zakum AD68 UZ685 51,000 ftMD (15,544.0 mMD) 2023

*) Measured from Rotary Table wells final TD

Category 2: Deepest Well (TVD)

# Operator Country Field/Concession Rig Name Well Name Total True Vertical Depth* Year
1 BP USA Keathley Canyon block 102 Deepwater Horizon Tiber 35,055 ftTVD (10,658 mTVD) 2009
2 Lone Star Producing Co. USA Burns Flat Loffland Brothers #32 Bertha Rogers 31,440 ftTVD (9,583 mTVD) 1974
3

*) Measured from Rotary Table to wells final TVD

Category 3: Highest ERD Ratio (MD/TVD)

# Operator Country Field/Concession Rig Name Well Name ERD Ratio* Year
1 Maersk Oil Qatar Qatar Al-Shaheen GSF Rig 127 BD-04A 10.485 2008
2
3

*) Measured from Rotary Table to wells final MD/TVD

Category 4: Longest Casing

# Operator Country Field/Concession Rig Name Well Name Total Length* Year
1
2
3

*) Measured from Casing Shoe to Wellhead

Category 5: Longest Liner

# Operator Country Field/Concession Rig Name Well Name Total Length* Year
1
2
3

*) Measured from Liner Shoe to Liner Running Tool

Category 6: Deepest Water

# Operator Country Field/Concession Rig Name Well Name Water Depth* Year
1 Total Angola Block 48 Maersk Voyager Ondjaba-1 11,903 ft (3,628 m) 2021
2 Total Uruguay Block 14 Maersk Venturer Raya-1 11,155 ft (3,400 m) 2016
3 ONGC India Block KG-DWN-2004/1 DDKG1 NA7-1 10,385 ft (3,165 m) 2013

*) Measured from Mean Sea Level to Seabed

Category 7: Longest Bit Run

# Operator Country Field/Concession Rig Name Well Name Bit Manufacturer Hole Size Footage* Year
1
2
3

*) Re-runs not included

Category 8: Footage per 24hrs

# Operator Country Field/Concession Rig Name Well Name Bit Manufacturer Hole Size Footage Year
1
2
3

Category 9: Highest Recorded Temperature

# Operator Country Field/Concession Rig Name Well Name Bottom Hole Temperature Year
1
2
3

Category 10: Highest Recorded Formation Pressure

# Operator Country Field/Concession Rig Name Well Name Formation Pressure Year
1
2
3

Category 11: Heaviest Casing

# Operator Country Field/Concession Rig Name Well Name Casing Weight* Year
1
2
3

*) Last recorded neutral weight before landing

Category 12: Longest Open Hole Section

# Operator Country Field/Concession Rig Name Well Name Total Length* Year
1
2
3

*) Measured from Last casing shoe to TD

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