2.25” (57mm) Workover PDC Bit Report - 18 Well Project 

A quantity of 2 steel body 2.25” (57mm) workover PDC bits were provided for testing to a Canadian Oilsands Energy Company for the purpose of drilling out pure cement plugs in steel tubing / casing in existing oil & gas wells with their production field.

It was decided by client to test the PDC bit on 1/3 of the project while drilling out the remaining wells conventionally with Bi-tone steel tooth bits.

The first and only PDC bit utilized, averaged 84 meters per hour with a total of 1630 meters of pure cement plugs drilled from 7 well bores. After the test was completed a visual inspection of the PDC bit indicated that the PDC still looked new with no noticeable wear on the bit.

The client also stated that in comparison with the standard Bi-Cone bits that they use, the PDC seemed to drill more consistent in R.O.P. and torque and that they were very pleased with the PDC workover bits overall performance.