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Drilling Engineering

Max Drill Pipe Length with a BHA

BHA length for desired WOB Max Drill Pipe Length with a BHA Stuck Pipe Computation Critical RPM to avoid Vibration Min Flow Rate for PDC bit Control Drilling Empirical Drill Collar Weight (Spiral and Regular) Surge and Swap Pressure Ton Mile calculation

Weight of drill pipe Wdp

lb/ft

BHA weight in air BHAWT

klbs

BHA length

ft

Marginof Overpull MOP

klbs

Mud Weight In

ppg

Safety factor f

%

Tensile strength of DP(T)

klbs