E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 21/01 (2006.01)
Patent
CA 2589580
A cuttings bed removal tool for use on a drill string in a well bore includes: a sub having a region of enlarged outer diameter over the string diameters indicated by its upper end connection and an indicator disposed downhole of the region of enlarged outer diameter and having at least one bypass port extending through the indicator to permit passage of fluid in an upward direction through the indicator.
Bbj Tools Inc.
Bennett Jones Llp
LandOfFree
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