Thanks guys,
Yes, underreaming has been industry practice for years. Today, underreaming is going through a renaissance as it is used more and other purposes than before. That results in requirements that are way beyond what was seen in the past. We are trying to construct underreamers that...
Hi BobM3, that is right. The net result is 3 beams seeing both bending and twist. The reamer parts should not contribute to the strength as they would jam mid way through the opening (they are milling their own space in an undersized wellbore, so they must be free to move)
I thought it might...
Hi everyone,
I am trying to figure out how to determine the torsionsal strength of a hollow body/tube with slots milled in it. The tube is a downhole drilling device and the slots contains expandable reamer elements that stick out sideways into the borehole wall (underreamer). When drilling, a...
