They're designed to allow the wellbore to be cleaned and cleared either by back reaming on rigs that have top-drive, or for rigs without top-drive by pulling out of the top of the curve, then rotating forward until reaching total depth. Wiper trips plus the time and money for them are eliminated, it's declared.
Ghost Reamers address "getting out of the hole when drilling with a motor in horizontal shale wells," reports the manufacturer. They are declared "a solution for doglegs, ledges, and cutting beds."
Complete information on Ghost Reamers - used in more than 100 shale applications with positive results in recent months - is free.
Stabil Drill, A Superior Energy Services company
110 Consolidated Drive
Lafayette, LA 70508
For FREE Information: click here.
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