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Drilling EngineeringWell ControlCalculation record

Bullheading Initial Average Fluid Density Calculator

ρinit=Ph,init0.052TVDperf\rho_{init}=\frac{P_{h,init}}{0.052TVD_{perf}}

Enter the declared drilling engineering inputs below to solve rho_init. Variable definitions, units, the default calculation, and the available source trail are included on this page.

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Inputs

Defaults provide a quick field-unit example for the equation.

2 variables

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Extended guidance in preparation

What is available in this record

This record provides the functioning calculator, formula, declared variables and units, a reproducible default result, and the available citation metadata. A separately written engineering interpretation has not yet been published for this calculation.

Formula reference

Formula, variables, and default calculation

ρinit=Ph,init0.052TVDperf\rho_{init}=\frac{P_{h,init}}{0.052TVD_{perf}}

Reproducible default result

With the default values shown below, the calculation returns rho_init = 9.134615 ppg. Defaults demonstrate the implementation; they are not recommended field values.

P_h_initpsi

3800

TVD_perfft

8000

Input definitions

P_h_init

psi

Initial Hydrostatic Pressure

TVD_perf

ft

Top Perforations True Vertical Depth

Output definitions

rho_init

ppg

Initial Average Fluid Density

P_h_init

psi

Initial Hydrostatic Pressure

TVD_perf

ft

Top Perforations True Vertical Depth

Source and record status

Source metadata identifies the relationship implemented by the calculator. Check the cited edition, unit basis, and scope against the engineering case before operational use.

reviewed

IADC WellSharp Formula Sheet, field units, well completion/workover bullheading formulae.

Open source reference