NAM Mills 672-m Casing in One Run Using Schlumberger Casing Mill, Berkel Field
Published: 04/13/2017
NAM Mills 672-m Casing in One Run Using Schlumberger Casing Mill, Berkel Field
Published: 04/13/2017
NAM completed casing milling operations in a single run, with an average milling ROP of 2.1 m/h and almost 50 m/d [164 ft/d]. Upon recovery, the casing mill showed only 55% wear.
Location
Berkel Field, Netherlands, Europe
Details
Holland
Berkel Field
Operation
Nederlandse Aardolie Maatschappij (NAM)
Inclination
42.9°
Hole size
12¼ in
Casing size
10¾ in
TD
692 m [2,270.34 ft]
Average ROP
2.1 m/h [6.89 ft/h]
Background
Ready for plug-and-abandonment operations, NAM needed to mill casing in well BRK-11. In similar wells in the field, this operation had required between 4 and 10 milling runs for the same casing length. To reduce the number or runs, NAM decided to use a Schlumberger 12 1/4-in casing mill to mill 672 m [2,205 ft] of 10 3/4-in casing.
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