The following factors have been mathematically modelled by Multiple Linear Regression and shown how they affect the overall drilling rate: Formation strength, Depth, Formation compaction, Pressure differential, Bit diameter and Weight on bit (WOB), Bit rotation (RPM), and Bit hydraulics.
Í þessu verkefni hefur verið sett fram borhraðalíkan sem inniheldur breytistærðir eins og styrk bergs, dýpi, bergþjöppun, þrýstifall og vökvaflæði borholuvökva, þvermál borkrónu, snúningshraða (RPM) og þyngd á krónu (WOB).