Sperry Drilling Services
Sperry Drill GeoForceTM Motor
Enhanced Performance and Reliability
The new Sperry Drill GeoForce PDM positive
displacement motor from Sperry Drilling Services delivers
a step change in motor design, performance and reliability.
Drilling Engineering Chapter 5: Drilling Bits
A drilling bit is the cutting or boring tool which is made up on the end of the drillstring (Figure 1).
The bit drills through the rock by scraping, chipping, gouging