A method for determining drill collar whirl in a bottom hole...

Details A method for determining drill collar whirl in a bottom hole... A method for determining drill collar whirl in a bottom hole...

E - Fixed Constructions

21

B

E21B 47/00 (2006.01) E21B 44/00 (2006.01) E21B 45/00 (2006.01)

Patent

CA 2270637

A method for determining drill collar whirl includes manipulating a plurality of variables in mathematical equations to solve for various values. The values are plotable overtime and provide graphic representations of conditions of forward or backward whirl with and without slip.

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