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Drilling EngineeringWell ControlCalculation record

Bullhead Pump Speed to Exceed Gas Migration Calculator

SPMbh=(RGM/60)CtbgPOSPM_{bh}=\frac{(RGM/60)C_{tbg}}{PO}

Enter the declared drilling engineering inputs below to solve SPM_bh. 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.

3 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

SPMbh=(RGM/60)CtbgPOSPM_{bh}=\frac{(RGM/60)C_{tbg}}{PO}

Reproducible default result

With the default values shown below, the calculation returns SPM_bh = 0.58 strokes/min. Defaults demonstrate the implementation; they are not recommended field values.

RGMft/hr

600

C_tbgbbl/ft

0.0058

PObbl/stk

0.1

Input definitions

RGM

ft/hr

Gas Migration Rate

C_tbg

bbl/ft

Tubing Capacity

PO

bbl/stk

Pump Output per Stroke

Output definitions

SPM_bh

strokes/min

Bullhead Pump Speed to Exceed Gas Migration

RGM

ft/hr

Gas Migration Rate

C_tbg

bbl/ft

Tubing Capacity

PO

bbl/stk

Pump Output per Stroke

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