Friends, here is the simple Workover Kill fluid Density calculation, hope would be helpful to all:

Kill Fluid Density : {(SBHP + 35 or 75) x 624.25 } / TVD , lbs/cft


where, SBHP = Static bottom Hole pressure , kg/cm2
TVD = Total Vertical Depth = (Total Depth - Deviation Correction ) , m
35 is the conversion factor for Oil Wells
75 is the conversion factor for Gas Wells