Saturday, 4 November 2017

DRILL COLLARS WEIGHT CALCULATIONS - PRESSURE AREA METHOD

Drill Collars Weight Calculations 

Pressure Area Method

The Pressure Area Method drawing drill collars weight calculations
The-Pressure-Area-Method
The Pressure-Area Method takes into account all the forces acting on the Drilling Bottom Hole Assembly BHA including the hydraulic forces. Consider the free body diagram in above Figure. A force balance yields,
The Pressure Area Method equation 1


The length of Drill Collar required to provide Weight On Drilling Bit WOB is,

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