Kick Tolerance Maximum formation balance gradient that may be encounte with the present mud weight, and the well shut in, with KT = (LOT EMW - MW) * (LOT TVD / TD TVD) + M KT = Kick tolerance, ppg LOT EMW = Leak Off Test Equivalent Mud Weight, pp MW = Mud weight, ppg LOT TVD = Leak Off Test True Vertical Depth, ft T TD TVD = Point Of Interest True Vertical Depth, Kick Tolerance
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Kick ToleranceMaximum formation balance gradient that may be encountered when a kick is taken at the present depth,with the present mud weight, and the well shut in, without downhole fracturing occurring.
KT = (LOT EMW - MW) * (LOT TVD / TD TVD) + MW
KT = Kick tolerance, ppgLOT EMW = Leak Off Test Equivalent Mud Weight, ppg
MW = Mud weight, ppgLOT TVD = Leak Off Test True Vertical Depth, ft TVDTD TVD = Point Of Interest True Vertical Depth, ft TVD
Kick Tolerance 20.27
Kick ToleranceMaximum formation balance gradient that may be encountered when a kick is taken at the present depth,with the present mud weight, and the well shut in, without downhole fracturing occurring.
0.0000891 x MW^0.8 x GPM^1.8 x PV^0.2 x Length Turbulent Flow Use same equation as Bingham Plastic(Dh-Dp)^3 x (Dh+Dp)^1.8
Laminar = 2.4 x V 2n+1
Flow Dh-Dp 3n
Length 2449 feet653701.73 psi MW 10.5 ppg
Hole Diameter 8.5 inches Laminar Flow Drillpipe OD 5 inches
Velocity 300.74074 ft/minLength x YP
200 x (Dh-Dp)
89.027845 psi
Power Law Model
Fann 600 )Fann 300
1.6 3n+1 n/(2-n)D 4n
Critical Velocity 226.18961 ft/min
Use same equation as Bingham Plastic
n K L300 x D
Laminar Flow 36.259873 psi
2.4 2n+1 n/(2-n)Dh-Dp 3n
Critical Velocity 222.51475 ft/min
Use same equation as Bingham Plastic
n K L
300 x (Dh-Dp)
Laminar Flow 37.289524 psi
Mud Hydrostatic Pressure
This is the pressure exerted by a column of fluid at a given depth.
Hp psi = 0.0519 x MW ppg x TVD ft
MW 18 ppgTVD 11423 ft
Hp 10671.367 psi
Slug Gain CalculationCalculates the expected pit gain after pumping a weighted slug.The gain may not occur immediately but will take place slowly as the slug falls.
Expected Gain = ((Slug MW ppg / MW ppg) - 1) x Slug Amount bbls
Slug MW 13.6 ppgMW 9.6 ppg
Slug Amount 30 bbls
Expected Gain 12.5 bbls
The gain may not occur immediately but will take place slowly as the slug falls.