Competitive pressure introduces disparate bicenter design

05/15/2000
BICENTER DRILL BITS-Conclusion Without recent developments in machine drill-bit technologies, the ability to produce irregular-shaped junk slots would not have been possible. This bit includes a partial gauge ring drilled into the body of the reamer section and a separate, full-contact pilot gauge ring drilled into the pilot (Fig. 1). (Photo courtesy of Reed-Hycalog)Click here to enlarge imageIn response to competitive pressures introduced by recent shoe drill-out achievements, major bit manufacturers have begun using disparate bit features to drill reliably through plugs, packers, and formations in one run, while retaining toolface control throughout complex build and tangent sections. ...
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