Short Bit & Tool Co.

225 Gold St.

Garland, TX 75042

Our work with eccentric reamers started in 2006-2007 when thru-tubing clients needed to expand past what a common "BiCenter" mill would do. Over the next 3 years we designed and fabricated several iterations that used a concentric stabilizer as a guide that was extended below an eccentric reamer so that they would drift through the no-go restriction individually and then ream out to near full drift diameter. This was done in cement and in scales.

These were called BCS (BiCenter Subs)

In July of 2009 we were asked by Questar - NLA to help them with their dedicated reamer runs. They were running concetric reamers that caused considerable problems as bad as loss of valuable drilled hole from sticking.

They had us attach the top eccentric of an NOV Bicenter Eccentric bit to adapt to two concentric reamers that too did not work.

In August, 2009 Questar had us design and build a single eccentric BCSR that was run with an undersize concentric stabilizer in a dedicated reamer run that easily passed through the undersize drift and side reamed out to a size where the completion string went easily to bottom.

Our BCS Reamers were run for Questar through 2009-2010 and are not patented.

In November, 2010 while refitting six BCSR the three partners at SBT, Richard Beggs, Brad Beggs, and Bill Short worked through the calculations that defined the cutter geometry of our single eccentric reamers and created a new TRICENTER design that combined two existing BCSR eccentrics about 4 feet apart and spaced axially 180 degrees apart. This would eliminate the torque and drag problems caused by the concentric stabilizer component but would cause the two opposing eccentrics to act as guides to each other to side ream the near center undersized portion of the hole drift. The first run while drilling was in January, 2010 which was a compete success and eliminated the need for a dedicated reamer run.

Our provisional patent was filed in April, 2011 and our patent  8,851,205 was granted in 2014

We sold rights to that patent in 2013 which is owned by SDPI now.

In Feb, 2018 SBT designed and invented a new type of single eccentric reamer using a unique cutter geometry that could be run by itself (no stab), with a concentric stabilizer, or with an eccentric stabilizer(s). The initial 35 test runs were successful and confirmed our calculations that we would have less torque while drilling than the dual eccentric reamer geometry.

We have assigned 50% patent rights and 100% manufacturing and operational rights to Stabildrill  who is having continued success with a growing client base.

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